./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability 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/AutomizerReach.xml', '-i', '../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'ac50e78a0e7740f8f8502d719fb62ad334aab86379189891d467b39f2a3c9d3d'] 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/AutomizerReach.xml -i ../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac50e78a0e7740f8f8502d719fb62ad334aab86379189891d467b39f2a3c9d3d --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 22:36:17,447 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 22:36:17,522 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 22:36:17,527 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 22:36:17,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 22:36:17,556 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 22:36:17,557 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 22:36:17,557 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 22:36:17,557 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 22:36:17,558 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 22:36:17,558 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 22:36:17,558 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 22:36:17,558 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 22:36:17,559 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 22:36:17,559 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 22:36:17,559 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 22:36:17,559 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 22:36:17,559 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 22:36:17,559 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 22:36:17,559 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 22:36:17,559 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 22:36:17,559 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 22:36:17,559 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 22:36:17,559 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 22:36:17,559 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 22:36:17,559 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 22:36:17,560 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 22:36:17,560 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 22:36:17,560 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 22:36:17,560 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 22:36:17,560 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 22:36:17,560 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 22:36:17,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:36:17,562 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 22:36:17,562 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 22:36:17,562 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 22:36:17,562 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 22:36:17,563 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 22:36:17,563 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 22:36:17,563 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 22:36:17,563 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 22:36:17,563 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 22:36:17,563 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 ! call(reach_error())) ) 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 -> ac50e78a0e7740f8f8502d719fb62ad334aab86379189891d467b39f2a3c9d3d [2024-11-06 22:36:17,844 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 22:36:17,855 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 22:36:17,857 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 22:36:17,858 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 22:36:17,858 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 22:36:17,859 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2024-11-06 22:36:19,084 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 22:36:19,291 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 22:36:19,292 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c [2024-11-06 22:36:19,297 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/42c317a59/03f31828bee84b27b5834ac0cfd15612/FLAG67e1b4f73 [2024-11-06 22:36:19,314 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/42c317a59/03f31828bee84b27b5834ac0cfd15612 [2024-11-06 22:36:19,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 22:36:19,317 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 22:36:19,318 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 22:36:19,318 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 22:36:19,322 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 22:36:19,323 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:19" (1/1) ... [2024-11-06 22:36:19,325 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1bdf6cf5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:19, skipping insertion in model container [2024-11-06 22:36:19,325 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:36:19" (1/1) ... [2024-11-06 22:36:19,338 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 22:36:19,462 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1215,1228] [2024-11-06 22:36:19,469 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1969,1982] [2024-11-06 22:36:19,473 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2504,2517] [2024-11-06 22:36:19,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:36:19,485 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 22:36:19,500 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1215,1228] [2024-11-06 22:36:19,505 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[1969,1982] [2024-11-06 22:36:19,508 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/loop-crafted/simple_array_index_value_4.i.v+nlh-reducer.c[2504,2517] [2024-11-06 22:36:19,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 22:36:19,526 INFO L204 MainTranslator]: Completed translation [2024-11-06 22:36:19,526 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:19 WrapperNode [2024-11-06 22:36:19,526 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 22:36:19,527 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 22:36:19,527 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 22:36:19,529 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 22:36:19,534 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:19" (1/1) ... [2024-11-06 22:36:19,540 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:19" (1/1) ... [2024-11-06 22:36:19,560 INFO L138 Inliner]: procedures = 15, calls = 21, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 144 [2024-11-06 22:36:19,564 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 22:36:19,565 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 22:36:19,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 22:36:19,565 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 22:36:19,572 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:19" (1/1) ... [2024-11-06 22:36:19,572 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:19" (1/1) ... [2024-11-06 22:36:19,577 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:19" (1/1) ... [2024-11-06 22:36:19,596 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-06 22:36:19,599 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:19" (1/1) ... [2024-11-06 22:36:19,599 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:19" (1/1) ... [2024-11-06 22:36:19,604 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:19" (1/1) ... [2024-11-06 22:36:19,612 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:19" (1/1) ... [2024-11-06 22:36:19,613 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:19" (1/1) ... [2024-11-06 22:36:19,618 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:19" (1/1) ... [2024-11-06 22:36:19,619 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 22:36:19,620 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 22:36:19,620 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 22:36:19,620 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 22:36:19,621 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:19" (1/1) ... [2024-11-06 22:36:19,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 22:36:19,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:36:19,653 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) [2024-11-06 22:36:19,657 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 [2024-11-06 22:36:19,679 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 22:36:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 22:36:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-06 22:36:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-06 22:36:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-06 22:36:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-06 22:36:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 22:36:19,680 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 22:36:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-06 22:36:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-06 22:36:19,680 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-06 22:36:19,761 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 22:36:19,762 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 22:36:19,954 INFO L? ?]: Removed 25 outVars from TransFormulas that were not future-live. [2024-11-06 22:36:19,955 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 22:36:19,962 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 22:36:19,963 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-06 22:36:19,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:19 BoogieIcfgContainer [2024-11-06 22:36:19,963 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 22:36:19,965 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 22:36:19,965 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 22:36:19,969 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 22:36:19,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:36:19" (1/3) ... [2024-11-06 22:36:19,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12147e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:19, skipping insertion in model container [2024-11-06 22:36:19,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:36:19" (2/3) ... [2024-11-06 22:36:19,970 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12147e1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:36:19, skipping insertion in model container [2024-11-06 22:36:19,970 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:19" (3/3) ... [2024-11-06 22:36:19,971 INFO L112 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_4.i.v+nlh-reducer.c [2024-11-06 22:36:19,984 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 22:36:19,984 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-06 22:36:20,040 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 22:36:20,051 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=LoopHeads, 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;@32264594, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 22:36:20,051 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-06 22:36:20,055 INFO L276 IsEmpty]: Start isEmpty. Operand has 34 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:20,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-06 22:36:20,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:36:20,059 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:36:20,059 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:36:20,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:36:20,064 INFO L85 PathProgramCache]: Analyzing trace with hash 685537565, now seen corresponding path program 1 times [2024-11-06 22:36:20,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:36:20,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835751404] [2024-11-06 22:36:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:36:20,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:36:20,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:36:20,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:36:20,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:36:20,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835751404] [2024-11-06 22:36:20,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835751404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:36:20,363 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:36:20,363 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 22:36:20,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673399915] [2024-11-06 22:36:20,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:36:20,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 22:36:20,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:36:20,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 22:36:20,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 22:36:20,386 INFO L87 Difference]: Start difference. First operand has 34 states, 30 states have (on average 1.6333333333333333) internal successors, (49), 33 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:20,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:36:20,414 INFO L93 Difference]: Finished difference Result 66 states and 96 transitions. [2024-11-06 22:36:20,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 22:36:20,417 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-06 22:36:20,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:36:20,422 INFO L225 Difference]: With dead ends: 66 [2024-11-06 22:36:20,422 INFO L226 Difference]: Without dead ends: 32 [2024-11-06 22:36:20,424 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 22:36:20,428 INFO L432 NwaCegarLoop]: 43 mSDtfsCounter, 1 mSDsluCounter, 39 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:36:20,429 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 82 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:36:20,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-06 22:36:20,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2024-11-06 22:36:20,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.3571428571428572) internal successors, (38), 30 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:20,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 38 transitions. [2024-11-06 22:36:20,460 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 38 transitions. Word has length 11 [2024-11-06 22:36:20,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:36:20,460 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 38 transitions. [2024-11-06 22:36:20,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:20,460 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 38 transitions. [2024-11-06 22:36:20,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-06 22:36:20,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:36:20,461 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:36:20,461 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 22:36:20,461 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:36:20,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:36:20,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1849249499, now seen corresponding path program 1 times [2024-11-06 22:36:20,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:36:20,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824585188] [2024-11-06 22:36:20,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:36:20,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:36:20,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:36:20,656 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:36:20,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:36:20,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824585188] [2024-11-06 22:36:20,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824585188] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:36:20,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [740792418] [2024-11-06 22:36:20,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:36:20,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:36:20,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:36:20,660 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) [2024-11-06 22:36:20,662 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 [2024-11-06 22:36:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:36:20,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 22:36:20,739 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:36:20,783 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:36:20,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:36:20,850 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:36:20,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [740792418] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-06 22:36:20,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-06 22:36:20,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-06 22:36:20,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337061156] [2024-11-06 22:36:20,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:36:20,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 22:36:20,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:36:20,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 22:36:20,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:36:20,854 INFO L87 Difference]: Start difference. First operand 31 states and 38 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:20,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:36:20,868 INFO L93 Difference]: Finished difference Result 38 states and 45 transitions. [2024-11-06 22:36:20,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 22:36:20,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-06 22:36:20,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:36:20,869 INFO L225 Difference]: With dead ends: 38 [2024-11-06 22:36:20,869 INFO L226 Difference]: Without dead ends: 33 [2024-11-06 22:36:20,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:36:20,870 INFO L432 NwaCegarLoop]: 37 mSDtfsCounter, 22 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:36:20,870 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 54 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:36:20,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-06 22:36:20,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2024-11-06 22:36:20,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.3214285714285714) internal successors, (37), 30 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:20,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 37 transitions. [2024-11-06 22:36:20,874 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 37 transitions. Word has length 13 [2024-11-06 22:36:20,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:36:20,874 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 37 transitions. [2024-11-06 22:36:20,874 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:20,874 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 37 transitions. [2024-11-06 22:36:20,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-06 22:36:20,875 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:36:20,875 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:36:20,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-06 22:36:21,078 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:36:21,078 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:36:21,079 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:36:21,079 INFO L85 PathProgramCache]: Analyzing trace with hash -688679461, now seen corresponding path program 1 times [2024-11-06 22:36:21,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:36:21,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379789934] [2024-11-06 22:36:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:36:21,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:36:21,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:36:21,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:36:21,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:36:21,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379789934] [2024-11-06 22:36:21,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379789934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:36:21,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:36:21,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 22:36:21,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490363502] [2024-11-06 22:36:21,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:36:21,130 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 22:36:21,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:36:21,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 22:36:21,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 22:36:21,131 INFO L87 Difference]: Start difference. First operand 31 states and 37 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:21,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:36:21,164 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2024-11-06 22:36:21,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 22:36:21,165 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-06 22:36:21,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:36:21,165 INFO L225 Difference]: With dead ends: 58 [2024-11-06 22:36:21,166 INFO L226 Difference]: Without dead ends: 38 [2024-11-06 22:36:21,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 22:36:21,166 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 16 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:36:21,167 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 44 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:36:21,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-06 22:36:21,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2024-11-06 22:36:21,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 30 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:21,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2024-11-06 22:36:21,172 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 14 [2024-11-06 22:36:21,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:36:21,172 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2024-11-06 22:36:21,173 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:21,173 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2024-11-06 22:36:21,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-06 22:36:21,173 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:36:21,173 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:36:21,173 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-06 22:36:21,173 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:36:21,174 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:36:21,174 INFO L85 PathProgramCache]: Analyzing trace with hash -757168970, now seen corresponding path program 1 times [2024-11-06 22:36:21,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:36:21,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957280445] [2024-11-06 22:36:21,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:36:21,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:36:21,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:36:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:36:21,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:36:21,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957280445] [2024-11-06 22:36:21,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957280445] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:36:21,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:36:21,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-06 22:36:21,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307587099] [2024-11-06 22:36:21,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:36:21,253 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-06 22:36:21,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:36:21,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-06 22:36:21,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-06 22:36:21,254 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:21,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:36:21,278 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2024-11-06 22:36:21,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-06 22:36:21,280 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2024-11-06 22:36:21,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:36:21,281 INFO L225 Difference]: With dead ends: 35 [2024-11-06 22:36:21,281 INFO L226 Difference]: Without dead ends: 33 [2024-11-06 22:36:21,281 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-06 22:36:21,282 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 1 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:36:21,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 93 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:36:21,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-06 22:36:21,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2024-11-06 22:36:21,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 32 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:21,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 38 transitions. [2024-11-06 22:36:21,289 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 38 transitions. Word has length 14 [2024-11-06 22:36:21,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:36:21,289 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 38 transitions. [2024-11-06 22:36:21,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:21,289 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 38 transitions. [2024-11-06 22:36:21,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-06 22:36:21,290 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:36:21,290 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:36:21,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-06 22:36:21,290 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:36:21,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:36:21,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1935439187, now seen corresponding path program 1 times [2024-11-06 22:36:21,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:36:21,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431812328] [2024-11-06 22:36:21,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:36:21,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:36:21,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:36:21,351 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-06 22:36:21,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:36:21,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431812328] [2024-11-06 22:36:21,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431812328] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:36:21,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:36:21,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 22:36:21,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646124891] [2024-11-06 22:36:21,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:36:21,352 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 22:36:21,352 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:36:21,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 22:36:21,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 22:36:21,353 INFO L87 Difference]: Start difference. First operand 33 states and 38 transitions. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:21,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:36:21,382 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2024-11-06 22:36:21,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 22:36:21,382 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-06 22:36:21,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:36:21,382 INFO L225 Difference]: With dead ends: 54 [2024-11-06 22:36:21,382 INFO L226 Difference]: Without dead ends: 34 [2024-11-06 22:36:21,383 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 22:36:21,383 INFO L432 NwaCegarLoop]: 27 mSDtfsCounter, 8 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:36:21,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 42 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:36:21,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-06 22:36:21,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 28. [2024-11-06 22:36:21,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 26 states have (on average 1.2307692307692308) internal successors, (32), 27 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:21,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2024-11-06 22:36:21,389 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 15 [2024-11-06 22:36:21,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:36:21,389 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2024-11-06 22:36:21,389 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:21,389 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2024-11-06 22:36:21,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-06 22:36:21,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:36:21,391 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:36:21,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-06 22:36:21,391 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:36:21,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:36:21,391 INFO L85 PathProgramCache]: Analyzing trace with hash -9215146, now seen corresponding path program 1 times [2024-11-06 22:36:21,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:36:21,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389229566] [2024-11-06 22:36:21,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:36:21,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:36:21,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:36:21,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:36:21,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:36:21,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389229566] [2024-11-06 22:36:21,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389229566] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:36:21,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224943814] [2024-11-06 22:36:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:36:21,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:36:21,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:36:21,524 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) [2024-11-06 22:36:21,526 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 [2024-11-06 22:36:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:36:21,597 INFO L255 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-06 22:36:21,598 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:36:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:36:21,614 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 22:36:21,649 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:36:21,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224943814] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 22:36:21,650 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 22:36:21,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-06 22:36:21,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929826747] [2024-11-06 22:36:21,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 22:36:21,651 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 22:36:21,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:36:21,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 22:36:21,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2024-11-06 22:36:21,653 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:21,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:36:21,704 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2024-11-06 22:36:21,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 22:36:21,704 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-11-06 22:36:21,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:36:21,705 INFO L225 Difference]: With dead ends: 57 [2024-11-06 22:36:21,705 INFO L226 Difference]: Without dead ends: 34 [2024-11-06 22:36:21,705 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=30, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:36:21,706 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 3 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:36:21,706 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 81 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:36:21,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-06 22:36:21,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-06 22:36:21,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 32 states have (on average 1.1875) internal successors, (38), 33 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:21,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2024-11-06 22:36:21,712 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 20 [2024-11-06 22:36:21,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:36:21,712 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2024-11-06 22:36:21,712 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:21,713 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2024-11-06 22:36:21,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-06 22:36:21,714 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:36:21,714 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:36:21,730 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-06 22:36:21,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:36:21,915 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:36:21,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:36:21,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1951259100, now seen corresponding path program 2 times [2024-11-06 22:36:21,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:36:21,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240136897] [2024-11-06 22:36:21,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:36:21,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:36:21,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:36:22,132 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-06 22:36:22,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:36:22,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240136897] [2024-11-06 22:36:22,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240136897] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 22:36:22,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4221507] [2024-11-06 22:36:22,134 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 22:36:22,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:36:22,134 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 22:36:22,136 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) [2024-11-06 22:36:22,138 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 [2024-11-06 22:36:22,295 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-06 22:36:22,296 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 22:36:22,297 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-06 22:36:22,300 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 22:36:23,314 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:36:23,315 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:36:23,317 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:36:23,318 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:36:23,319 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-06 22:36:23,320 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:36:23,321 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-06 22:36:23,323 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-06 22:36:23,337 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-06 22:36:23,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 6 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 306 treesize of output 153 [2024-11-06 22:36:23,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 22:36:23,505 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-06 22:36:23,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4221507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:36:23,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-06 22:36:23,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2024-11-06 22:36:23,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170576175] [2024-11-06 22:36:23,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:36:23,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-06 22:36:23,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:36:23,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-06 22:36:23,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-11-06 22:36:23,507 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:23,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:36:23,707 INFO L93 Difference]: Finished difference Result 49 states and 57 transitions. [2024-11-06 22:36:23,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-06 22:36:23,708 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-06 22:36:23,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:36:23,708 INFO L225 Difference]: With dead ends: 49 [2024-11-06 22:36:23,708 INFO L226 Difference]: Without dead ends: 30 [2024-11-06 22:36:23,708 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2024-11-06 22:36:23,709 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 24 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 22:36:23,709 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 40 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 22:36:23,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-06 22:36:23,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2024-11-06 22:36:23,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.0740740740740742) internal successors, (29), 27 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:23,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2024-11-06 22:36:23,712 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 26 [2024-11-06 22:36:23,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:36:23,712 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2024-11-06 22:36:23,713 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 9 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:23,713 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2024-11-06 22:36:23,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-06 22:36:23,713 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 22:36:23,716 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 22:36:23,734 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-06 22:36:23,920 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 22:36:23,921 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 22:36:23,921 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 22:36:23,922 INFO L85 PathProgramCache]: Analyzing trace with hash -321915466, now seen corresponding path program 1 times [2024-11-06 22:36:23,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 22:36:23,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968629624] [2024-11-06 22:36:23,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 22:36:23,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 22:36:23,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 22:36:24,029 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-06 22:36:24,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 22:36:24,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968629624] [2024-11-06 22:36:24,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968629624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 22:36:24,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 22:36:24,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-06 22:36:24,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804623104] [2024-11-06 22:36:24,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 22:36:24,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-06 22:36:24,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 22:36:24,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-06 22:36:24,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-06 22:36:24,032 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:24,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 22:36:24,068 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2024-11-06 22:36:24,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 22:36:24,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2024-11-06 22:36:24,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 22:36:24,069 INFO L225 Difference]: With dead ends: 28 [2024-11-06 22:36:24,069 INFO L226 Difference]: Without dead ends: 0 [2024-11-06 22:36:24,069 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-06 22:36:24,070 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 2 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 22:36:24,070 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 72 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 22:36:24,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-06 22:36:24,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-06 22:36:24,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:24,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-06 22:36:24,071 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2024-11-06 22:36:24,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 22:36:24,071 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-06 22:36:24,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 22:36:24,071 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-06 22:36:24,072 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-06 22:36:24,074 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2024-11-06 22:36:24,075 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-06 22:36:24,075 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-11-06 22:36:24,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-06 22:36:24,077 INFO L407 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2024-11-06 22:36:24,080 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-06 22:36:24,115 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-06 22:36:24,122 WARN L976 BoogieBacktranslator]: Unfinished Backtranslation: Unknown variable: ~#main__array~0!offset [2024-11-06 22:36:24,128 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:36:24 BoogieIcfgContainer [2024-11-06 22:36:24,128 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-06 22:36:24,128 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-06 22:36:24,128 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-06 22:36:24,129 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-06 22:36:24,129 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:36:19" (3/4) ... [2024-11-06 22:36:24,131 INFO L142 WitnessPrinter]: Generating witness for correct program [2024-11-06 22:36:24,139 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2024-11-06 22:36:24,139 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-06 22:36:24,140 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-06 22:36:24,140 INFO L925 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-06 22:36:24,207 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-11-06 22:36:24,207 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/witness.yml [2024-11-06 22:36:24,207 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-06 22:36:24,208 INFO L158 Benchmark]: Toolchain (without parser) took 4891.44ms. Allocated memory was 117.4MB in the beginning and 167.8MB in the end (delta: 50.3MB). Free memory was 91.3MB in the beginning and 92.9MB in the end (delta: -1.6MB). Peak memory consumption was 47.1MB. Max. memory is 16.1GB. [2024-11-06 22:36:24,208 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 81.0MB in the end (delta: 104.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:36:24,209 INFO L158 Benchmark]: CACSL2BoogieTranslator took 208.73ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 79.2MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:36:24,209 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.26ms. Allocated memory is still 117.4MB. Free memory was 79.2MB in the beginning and 77.7MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:36:24,210 INFO L158 Benchmark]: Boogie Preprocessor took 54.47ms. Allocated memory is still 117.4MB. Free memory was 77.7MB in the beginning and 76.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:36:24,210 INFO L158 Benchmark]: RCFGBuilder took 343.47ms. Allocated memory is still 117.4MB. Free memory was 76.1MB in the beginning and 62.3MB in the end (delta: 13.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-06 22:36:24,211 INFO L158 Benchmark]: TraceAbstraction took 4162.61ms. Allocated memory was 117.4MB in the beginning and 167.8MB in the end (delta: 50.3MB). Free memory was 61.8MB in the beginning and 96.5MB in the end (delta: -34.7MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. [2024-11-06 22:36:24,211 INFO L158 Benchmark]: Witness Printer took 79.17ms. Allocated memory is still 167.8MB. Free memory was 96.5MB in the beginning and 92.9MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-06 22:36:24,213 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 117.4MB. Free memory was 81.1MB in the beginning and 81.0MB in the end (delta: 104.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 208.73ms. Allocated memory is still 117.4MB. Free memory was 91.1MB in the beginning and 79.2MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 37.26ms. Allocated memory is still 117.4MB. Free memory was 79.2MB in the beginning and 77.7MB in the end (delta: 1.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 54.47ms. Allocated memory is still 117.4MB. Free memory was 77.7MB in the beginning and 76.1MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 343.47ms. Allocated memory is still 117.4MB. Free memory was 76.1MB in the beginning and 62.3MB in the end (delta: 13.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 4162.61ms. Allocated memory was 117.4MB in the beginning and 167.8MB in the end (delta: 50.3MB). Free memory was 61.8MB in the beginning and 96.5MB in the end (delta: -34.7MB). Peak memory consumption was 21.9MB. Max. memory is 16.1GB. * Witness Printer took 79.17ms. Allocated memory is still 167.8MB. Free memory was 96.5MB in the beginning and 92.9MB in the end (delta: 3.6MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation Unfinished Backtranslation: Unknown variable: ~#main__array~0!offset * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 46]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 77]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 114]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 4.1s, OverallIterations: 8, TraceHistogramMax: 4, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 77 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 77 mSDsluCounter, 508 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 277 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 137 IncrementalHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 231 mSDtfsCounter, 137 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 129 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, InterpolantAutomatonStates: 39, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.3s InterpolantComputationTime, 199 NumberOfCodeBlocks, 191 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 219 ConstructedInterpolants, 0 QuantifiedInterpolants, 706 SizeOfPredicates, 6 NumberOfNonLiveVariables, 245 ConjunctsInSsa, 30 ConjunctsInUnsatCore, 13 InterpolantComputations, 7 PerfectInterpolantSequences, 36/57 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (main__loop_entered == 0) RESULT: Ultimate proved your program to be correct! [2024-11-06 22:36:24,238 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE