./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-examples/standard_init7_ground-1.i --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/array-examples/standard_init7_ground-1.i', '-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', 'b5676c3d6dc03d9d7c01548ab66d69c2eb88a4e88b4b03557196f7f055f86c4c'] 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/array-examples/standard_init7_ground-1.i -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 b5676c3d6dc03d9d7c01548ab66d69c2eb88a4e88b4b03557196f7f055f86c4c --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-06 18:11:20,541 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-06 18:11:20,645 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-06 18:11:20,654 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-06 18:11:20,654 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-06 18:11:20,684 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-06 18:11:20,685 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-06 18:11:20,685 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-06 18:11:20,685 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-06 18:11:20,686 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-06 18:11:20,686 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-06 18:11:20,686 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-06 18:11:20,686 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-06 18:11:20,686 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-06 18:11:20,686 INFO L153 SettingsManager]: * Use SBE=true [2024-11-06 18:11:20,687 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-06 18:11:20,687 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-06 18:11:20,687 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-06 18:11:20,687 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-06 18:11:20,687 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-06 18:11:20,687 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-06 18:11:20,687 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-06 18:11:20,687 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-06 18:11:20,688 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-06 18:11:20,688 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-06 18:11:20,688 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-06 18:11:20,688 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-06 18:11:20,688 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-06 18:11:20,689 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-06 18:11:20,689 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-06 18:11:20,689 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-06 18:11:20,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-06 18:11:20,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:11:20,689 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-06 18:11:20,689 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-06 18:11:20,689 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-06 18:11:20,689 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-06 18:11:20,689 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-06 18:11:20,689 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-06 18:11:20,690 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-06 18:11:20,690 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-06 18:11:20,690 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-06 18:11:20,690 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 -> b5676c3d6dc03d9d7c01548ab66d69c2eb88a4e88b4b03557196f7f055f86c4c [2024-11-06 18:11:20,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-06 18:11:20,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-06 18:11:20,999 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-06 18:11:21,000 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-06 18:11:21,000 INFO L274 PluginConnector]: CDTParser initialized [2024-11-06 18:11:21,001 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-examples/standard_init7_ground-1.i [2024-11-06 18:11:22,317 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-06 18:11:22,542 INFO L384 CDTParser]: Found 1 translation units. [2024-11-06 18:11:22,543 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/array-examples/standard_init7_ground-1.i [2024-11-06 18:11:22,552 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/335266650/56baffab1e4b40a5b274bcfb6e1b3318/FLAGc75083319 [2024-11-06 18:11:22,572 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/335266650/56baffab1e4b40a5b274bcfb6e1b3318 [2024-11-06 18:11:22,575 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-06 18:11:22,577 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-06 18:11:22,578 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-06 18:11:22,579 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-06 18:11:22,584 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-06 18:11:22,584 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:11:22" (1/1) ... [2024-11-06 18:11:22,586 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69a80393 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:22, skipping insertion in model container [2024-11-06 18:11:22,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 06:11:22" (1/1) ... [2024-11-06 18:11:22,600 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-06 18:11:22,727 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/array-examples/standard_init7_ground-1.i[816,829] [2024-11-06 18:11:22,750 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:11:22,759 INFO L200 MainTranslator]: Completed pre-run [2024-11-06 18:11:22,769 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/array-examples/standard_init7_ground-1.i[816,829] [2024-11-06 18:11:22,782 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-06 18:11:22,799 INFO L204 MainTranslator]: Completed translation [2024-11-06 18:11:22,800 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:22 WrapperNode [2024-11-06 18:11:22,801 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-06 18:11:22,802 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-06 18:11:22,802 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-06 18:11:22,802 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-06 18:11:22,808 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:22" (1/1) ... [2024-11-06 18:11:22,817 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:22" (1/1) ... [2024-11-06 18:11:22,836 INFO L138 Inliner]: procedures = 15, calls = 18, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 81 [2024-11-06 18:11:22,836 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-06 18:11:22,837 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-06 18:11:22,837 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-06 18:11:22,838 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-06 18:11:22,845 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:22" (1/1) ... [2024-11-06 18:11:22,845 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:22" (1/1) ... [2024-11-06 18:11:22,847 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:22" (1/1) ... [2024-11-06 18:11:22,859 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 7 writes are split as follows [0, 7]. [2024-11-06 18:11:22,860 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:22" (1/1) ... [2024-11-06 18:11:22,860 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:22" (1/1) ... [2024-11-06 18:11:22,866 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:22" (1/1) ... [2024-11-06 18:11:22,872 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:22" (1/1) ... [2024-11-06 18:11:22,875 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:22" (1/1) ... [2024-11-06 18:11:22,876 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:22" (1/1) ... [2024-11-06 18:11:22,881 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-06 18:11:22,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-06 18:11:22,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-06 18:11:22,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-06 18:11:22,885 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:22" (1/1) ... [2024-11-06 18:11:22,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-06 18:11:22,906 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:11:22,919 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 18:11:22,922 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 18:11:22,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-06 18:11:22,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-06 18:11:22,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-06 18:11:22,941 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-06 18:11:22,941 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-06 18:11:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-06 18:11:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-06 18:11:22,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-06 18:11:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-06 18:11:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-06 18:11:22,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-06 18:11:23,015 INFO L238 CfgBuilder]: Building ICFG [2024-11-06 18:11:23,017 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-06 18:11:23,161 INFO L? ?]: Removed 14 outVars from TransFormulas that were not future-live. [2024-11-06 18:11:23,161 INFO L287 CfgBuilder]: Performing block encoding [2024-11-06 18:11:23,170 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-06 18:11:23,170 INFO L316 CfgBuilder]: Removed 8 assume(true) statements. [2024-11-06 18:11:23,170 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:11:23 BoogieIcfgContainer [2024-11-06 18:11:23,170 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-06 18:11:23,172 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-06 18:11:23,172 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-06 18:11:23,177 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-06 18:11:23,177 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 06:11:22" (1/3) ... [2024-11-06 18:11:23,178 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192763ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:11:23, skipping insertion in model container [2024-11-06 18:11:23,178 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 06:11:22" (2/3) ... [2024-11-06 18:11:23,179 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@192763ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 06:11:23, skipping insertion in model container [2024-11-06 18:11:23,180 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 06:11:23" (3/3) ... [2024-11-06 18:11:23,181 INFO L112 eAbstractionObserver]: Analyzing ICFG standard_init7_ground-1.i [2024-11-06 18:11:23,195 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-06 18:11:23,196 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-06 18:11:23,251 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-06 18:11:23,264 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;@3377ef23, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-06 18:11:23,264 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-06 18:11:23,268 INFO L276 IsEmpty]: Start isEmpty. Operand has 26 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 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 18:11:23,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-06 18:11:23,274 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:11:23,275 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:11:23,275 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:11:23,280 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:11:23,281 INFO L85 PathProgramCache]: Analyzing trace with hash -495328290, now seen corresponding path program 1 times [2024-11-06 18:11:23,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:11:23,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154798429] [2024-11-06 18:11:23,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:11:23,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:11:23,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:11:23,442 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 18:11:23,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:11:23,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154798429] [2024-11-06 18:11:23,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154798429] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-06 18:11:23,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-06 18:11:23,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-06 18:11:23,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522054673] [2024-11-06 18:11:23,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-06 18:11:23,450 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-06 18:11:23,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:11:23,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-06 18:11:23,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-06 18:11:23,469 INFO L87 Difference]: Start difference. First operand has 26 states, 24 states have (on average 1.75) internal successors, (42), 25 states have internal predecessors, (42), 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 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 18:11:23,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:11:23,536 INFO L93 Difference]: Finished difference Result 56 states and 100 transitions. [2024-11-06 18:11:23,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-06 18:11:23,540 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 19 [2024-11-06 18:11:23,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:11:23,549 INFO L225 Difference]: With dead ends: 56 [2024-11-06 18:11:23,550 INFO L226 Difference]: Without dead ends: 29 [2024-11-06 18:11:23,553 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 18:11:23,557 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-06 18:11:23,559 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 37 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-06 18:11:23,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-11-06 18:11:23,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-11-06 18:11:23,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 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 18:11:23,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 36 transitions. [2024-11-06 18:11:23,602 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 36 transitions. Word has length 19 [2024-11-06 18:11:23,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:11:23,602 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 36 transitions. [2024-11-06 18:11:23,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 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 18:11:23,602 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 36 transitions. [2024-11-06 18:11:23,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-06 18:11:23,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:11:23,603 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:11:23,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-06 18:11:23,603 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:11:23,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:11:23,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1838625458, now seen corresponding path program 1 times [2024-11-06 18:11:23,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:11:23,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898621280] [2024-11-06 18:11:23,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:11:23,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:11:23,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:11:23,780 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:11:23,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:11:23,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898621280] [2024-11-06 18:11:23,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898621280] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:11:23,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1745547793] [2024-11-06 18:11:23,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:11:23,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:11:23,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:11:23,785 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 18:11:23,789 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 18:11:23,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:11:23,866 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-06 18:11:23,870 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:11:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:11:23,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:11:23,947 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-06 18:11:23,949 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1745547793] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:11:23,949 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:11:23,949 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-06 18:11:23,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [108554904] [2024-11-06 18:11:23,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:11:23,951 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-06 18:11:23,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:11:23,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-06 18:11:23,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:11:23,954 INFO L87 Difference]: Start difference. First operand 29 states and 36 transitions. Second operand has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 18:11:24,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:11:24,098 INFO L93 Difference]: Finished difference Result 75 states and 109 transitions. [2024-11-06 18:11:24,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-06 18:11:24,100 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 18:11:24,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:11:24,100 INFO L225 Difference]: With dead ends: 75 [2024-11-06 18:11:24,101 INFO L226 Difference]: Without dead ends: 50 [2024-11-06 18:11:24,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-06 18:11:24,102 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-06 18:11:24,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-06 18:11:24,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-06 18:11:24,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-06 18:11:24,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 49 states have (on average 1.163265306122449) internal successors, (57), 49 states have internal predecessors, (57), 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 18:11:24,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2024-11-06 18:11:24,114 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 26 [2024-11-06 18:11:24,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:11:24,116 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2024-11-06 18:11:24,116 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.428571428571429) internal successors, (31), 7 states have internal predecessors, (31), 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 18:11:24,116 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2024-11-06 18:11:24,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2024-11-06 18:11:24,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:11:24,117 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:11:24,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-06 18:11:24,318 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 18:11:24,318 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:11:24,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:11:24,319 INFO L85 PathProgramCache]: Analyzing trace with hash 1915847130, now seen corresponding path program 2 times [2024-11-06 18:11:24,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:11:24,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215802773] [2024-11-06 18:11:24,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:11:24,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:11:24,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:11:24,678 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-06 18:11:24,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:11:24,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215802773] [2024-11-06 18:11:24,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215802773] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:11:24,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452509620] [2024-11-06 18:11:24,680 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-06 18:11:24,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:11:24,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:11:24,683 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 18:11:24,685 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 18:11:24,800 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-06 18:11:24,800 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:11:24,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 258 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-06 18:11:24,804 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:11:24,835 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-06 18:11:24,837 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:11:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2024-11-06 18:11:24,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452509620] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:11:24,925 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:11:24,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-06 18:11:24,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079677330] [2024-11-06 18:11:24,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:11:24,926 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-06 18:11:24,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:11:24,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-06 18:11:24,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-06 18:11:24,927 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 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 18:11:25,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:11:25,188 INFO L93 Difference]: Finished difference Result 135 states and 190 transitions. [2024-11-06 18:11:25,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-06 18:11:25,189 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 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) Word has length 47 [2024-11-06 18:11:25,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:11:25,189 INFO L225 Difference]: With dead ends: 135 [2024-11-06 18:11:25,189 INFO L226 Difference]: Without dead ends: 92 [2024-11-06 18:11:25,190 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-06 18:11:25,190 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-06 18:11:25,191 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-06 18:11:25,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-11-06 18:11:25,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-11-06 18:11:25,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.0879120879120878) internal successors, (99), 91 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-06 18:11:25,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2024-11-06 18:11:25,212 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 47 [2024-11-06 18:11:25,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:11:25,212 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2024-11-06 18:11:25,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 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 18:11:25,213 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2024-11-06 18:11:25,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-11-06 18:11:25,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:11:25,215 INFO L215 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:11:25,233 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 18:11:25,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:11:25,418 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:11:25,418 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:11:25,419 INFO L85 PathProgramCache]: Analyzing trace with hash -1268791078, now seen corresponding path program 3 times [2024-11-06 18:11:25,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:11:25,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120902975] [2024-11-06 18:11:25,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:11:25,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:11:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:11:26,029 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2024-11-06 18:11:26,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:11:26,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120902975] [2024-11-06 18:11:26,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120902975] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:11:26,032 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [162001835] [2024-11-06 18:11:26,032 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-06 18:11:26,032 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:11:26,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:11:26,035 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 18:11:26,037 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 18:11:30,597 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2024-11-06 18:11:30,597 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:11:30,610 INFO L255 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-11-06 18:11:30,614 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:11:30,678 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 10 proven. 55 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2024-11-06 18:11:30,678 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:11:30,966 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 0 proven. 74 refuted. 0 times theorem prover too weak. 311 trivial. 0 not checked. [2024-11-06 18:11:30,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [162001835] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:11:30,969 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:11:30,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 14] total 27 [2024-11-06 18:11:30,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441464011] [2024-11-06 18:11:30,969 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:11:30,970 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-06 18:11:30,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:11:30,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-06 18:11:30,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=349, Invalid=353, Unknown=0, NotChecked=0, Total=702 [2024-11-06 18:11:30,971 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 27 states have internal predecessors, (79), 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 18:11:31,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:11:31,445 INFO L93 Difference]: Finished difference Result 255 states and 352 transitions. [2024-11-06 18:11:31,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-06 18:11:31,446 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 27 states have internal predecessors, (79), 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 89 [2024-11-06 18:11:31,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:11:31,447 INFO L225 Difference]: With dead ends: 255 [2024-11-06 18:11:31,447 INFO L226 Difference]: Without dead ends: 176 [2024-11-06 18:11:31,448 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 189 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=349, Invalid=353, Unknown=0, NotChecked=0, Total=702 [2024-11-06 18:11:31,449 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-06 18:11:31,449 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-06 18:11:31,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2024-11-06 18:11:31,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2024-11-06 18:11:31,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 175 states have (on average 1.0457142857142858) internal successors, (183), 175 states have internal predecessors, (183), 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 18:11:31,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 183 transitions. [2024-11-06 18:11:31,484 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 183 transitions. Word has length 89 [2024-11-06 18:11:31,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:11:31,485 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 183 transitions. [2024-11-06 18:11:31,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.925925925925926) internal successors, (79), 27 states have internal predecessors, (79), 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 18:11:31,485 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 183 transitions. [2024-11-06 18:11:31,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-06 18:11:31,492 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:11:31,492 INFO L215 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:11:31,520 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-06 18:11:31,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:11:31,693 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:11:31,693 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:11:31,693 INFO L85 PathProgramCache]: Analyzing trace with hash 126801626, now seen corresponding path program 4 times [2024-11-06 18:11:31,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:11:31,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005712927] [2024-11-06 18:11:31,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:11:31,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:11:31,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:11:33,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2024-11-06 18:11:33,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:11:33,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005712927] [2024-11-06 18:11:33,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005712927] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:11:33,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264408629] [2024-11-06 18:11:33,145 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-06 18:11:33,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:11:33,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:11:33,148 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:11:33,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-06 18:11:33,442 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-06 18:11:33,442 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-06 18:11:33,448 INFO L255 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-06 18:11:33,453 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-06 18:11:33,546 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2024-11-06 18:11:33,546 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-06 18:11:34,334 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 1518 trivial. 0 not checked. [2024-11-06 18:11:34,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1264408629] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-06 18:11:34,335 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-06 18:11:34,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-06 18:11:34,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906972080] [2024-11-06 18:11:34,335 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-06 18:11:34,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-06 18:11:34,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-06 18:11:34,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-06 18:11:34,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-06 18:11:34,339 INFO L87 Difference]: Start difference. First operand 176 states and 183 transitions. Second operand has 49 states, 49 states have (on average 1.489795918367347) internal successors, (73), 49 states have internal predecessors, (73), 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 18:11:35,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-06 18:11:35,407 INFO L93 Difference]: Finished difference Result 495 states and 676 transitions. [2024-11-06 18:11:35,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-06 18:11:35,407 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.489795918367347) internal successors, (73), 49 states have internal predecessors, (73), 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 173 [2024-11-06 18:11:35,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-06 18:11:35,409 INFO L225 Difference]: With dead ends: 495 [2024-11-06 18:11:35,410 INFO L226 Difference]: Without dead ends: 344 [2024-11-06 18:11:35,411 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 322 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-06 18:11:35,412 INFO L432 NwaCegarLoop]: 22 mSDtfsCounter, 0 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 1237 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 1594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1237 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-06 18:11:35,413 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 46 Invalid, 1594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1237 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-06 18:11:35,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 344 states. [2024-11-06 18:11:35,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 344 to 344. [2024-11-06 18:11:35,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 344 states, 343 states have (on average 1.0233236151603498) internal successors, (351), 343 states have internal predecessors, (351), 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 18:11:35,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 344 states to 344 states and 351 transitions. [2024-11-06 18:11:35,458 INFO L78 Accepts]: Start accepts. Automaton has 344 states and 351 transitions. Word has length 173 [2024-11-06 18:11:35,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-06 18:11:35,458 INFO L471 AbstractCegarLoop]: Abstraction has 344 states and 351 transitions. [2024-11-06 18:11:35,458 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.489795918367347) internal successors, (73), 49 states have internal predecessors, (73), 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 18:11:35,458 INFO L276 IsEmpty]: Start isEmpty. Operand 344 states and 351 transitions. [2024-11-06 18:11:35,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 342 [2024-11-06 18:11:35,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-06 18:11:35,462 INFO L215 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-06 18:11:35,484 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-06 18:11:35,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:11:35,667 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-06 18:11:35,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-06 18:11:35,668 INFO L85 PathProgramCache]: Analyzing trace with hash -866716966, now seen corresponding path program 5 times [2024-11-06 18:11:35,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-06 18:11:35,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960998205] [2024-11-06 18:11:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-06 18:11:35,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-06 18:11:35,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-06 18:11:39,334 INFO L134 CoverageAnalysis]: Checked inductivity of 7567 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 6486 trivial. 0 not checked. [2024-11-06 18:11:39,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-06 18:11:39,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960998205] [2024-11-06 18:11:39,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960998205] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-06 18:11:39,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [301120011] [2024-11-06 18:11:39,335 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-06 18:11:39,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-06 18:11:39,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-06 18:11:39,338 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-06 18:11:39,339 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process