./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.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/uthash-2.0.2/uthash_BER_test10-2.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', 'e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195'] 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/uthash-2.0.2/uthash_BER_test10-2.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 e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 14:52:19,331 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 14:52:19,433 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 14:52:19,438 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 14:52:19,439 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 14:52:19,463 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 14:52:19,465 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 14:52:19,465 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 14:52:19,466 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 14:52:19,466 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 14:52:19,466 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 14:52:19,467 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 14:52:19,467 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 14:52:19,467 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 14:52:19,467 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 14:52:19,467 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 14:52:19,467 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 14:52:19,467 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 14:52:19,467 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 14:52:19,468 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 14:52:19,468 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 14:52:19,468 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 14:52:19,468 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 14:52:19,468 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 14:52:19,468 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 14:52:19,468 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 14:52:19,468 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 14:52:19,469 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 14:52:19,469 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 14:52:19,469 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 14:52:19,469 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 14:52:19,469 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 14:52:19,469 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 14:52:19,469 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 14:52:19,469 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 14:52:19,470 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 14:52:19,470 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 14:52:19,470 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 14:52:19,470 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 14:52:19,470 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 14:52:19,470 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 14:52:19,470 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 14:52:19,471 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 -> e2d96ac7da90505ebe789a14ca36a5b916234d7d0d8ab11cf581076a8deb0195 [2024-11-07 14:52:19,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 14:52:19,706 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 14:52:19,708 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 14:52:19,709 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 14:52:19,709 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 14:52:19,711 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2024-11-07 14:52:21,050 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 14:52:21,346 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 14:52:21,351 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/uthash-2.0.2/uthash_BER_test10-2.i [2024-11-07 14:52:21,374 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/50707cd8e/28680ec8447c43ec9587ed1a5cd1e4bb/FLAG33e0f55be [2024-11-07 14:52:21,628 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/50707cd8e/28680ec8447c43ec9587ed1a5cd1e4bb [2024-11-07 14:52:21,631 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 14:52:21,632 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 14:52:21,637 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 14:52:21,637 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 14:52:21,643 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 14:52:21,646 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:52:21" (1/1) ... [2024-11-07 14:52:21,647 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34a32935 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:21, skipping insertion in model container [2024-11-07 14:52:21,647 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 02:52:21" (1/1) ... [2024-11-07 14:52:21,705 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 14:52:21,989 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/uthash-2.0.2/uthash_BER_test10-2.i[33022,33035] [2024-11-07 14:52:22,159 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 14:52:22,171 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 14:52:22,207 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/uthash-2.0.2/uthash_BER_test10-2.i[33022,33035] [2024-11-07 14:52:22,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 14:52:22,342 INFO L204 MainTranslator]: Completed translation [2024-11-07 14:52:22,343 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:22 WrapperNode [2024-11-07 14:52:22,343 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 14:52:22,344 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 14:52:22,345 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 14:52:22,345 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 14:52:22,350 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:22" (1/1) ... [2024-11-07 14:52:22,393 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:22" (1/1) ... [2024-11-07 14:52:22,510 INFO L138 Inliner]: procedures = 177, calls = 557, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 3576 [2024-11-07 14:52:22,510 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 14:52:22,511 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 14:52:22,511 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 14:52:22,512 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 14:52:22,518 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:22" (1/1) ... [2024-11-07 14:52:22,518 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:22" (1/1) ... [2024-11-07 14:52:22,580 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:22" (1/1) ... [2024-11-07 14:52:22,702 INFO L175 MemorySlicer]: Split 528 memory accesses to 3 slices as follows [2, 420, 106]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 94 writes are split as follows [0, 90, 4]. [2024-11-07 14:52:22,703 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:22" (1/1) ... [2024-11-07 14:52:22,703 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:22" (1/1) ... [2024-11-07 14:52:22,771 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:22" (1/1) ... [2024-11-07 14:52:22,803 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:22" (1/1) ... [2024-11-07 14:52:22,812 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:22" (1/1) ... [2024-11-07 14:52:22,825 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:22" (1/1) ... [2024-11-07 14:52:22,846 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 14:52:22,848 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 14:52:22,848 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 14:52:22,848 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 14:52:22,849 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:22" (1/1) ... [2024-11-07 14:52:22,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 14:52:22,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 14:52:22,877 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-07 14:52:22,879 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-07 14:52:22,903 INFO L130 BoogieDeclarations]: Found specification of procedure test_int_int [2024-11-07 14:52:22,903 INFO L138 BoogieDeclarations]: Found implementation of procedure test_int_int [2024-11-07 14:52:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-07 14:52:22,904 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-07 14:52:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-07 14:52:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-07 14:52:22,905 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-07 14:52:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-07 14:52:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-07 14:52:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-07 14:52:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-11-07 14:52:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-11-07 14:52:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#2 [2024-11-07 14:52:22,905 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-11-07 14:52:22,905 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-11-07 14:52:22,905 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#2 [2024-11-07 14:52:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-07 14:52:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 14:52:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-07 14:52:22,905 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-07 14:52:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-07 14:52:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-07 14:52:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-07 14:52:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-07 14:52:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-07 14:52:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-07 14:52:22,906 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 14:52:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-07 14:52:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-07 14:52:22,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 14:52:22,907 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 14:52:23,259 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 14:52:23,265 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 14:52:25,513 INFO L? ?]: Removed 807 outVars from TransFormulas that were not future-live. [2024-11-07 14:52:25,514 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 14:52:25,534 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 14:52:25,534 INFO L316 CfgBuilder]: Removed 160 assume(true) statements. [2024-11-07 14:52:25,534 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:52:25 BoogieIcfgContainer [2024-11-07 14:52:25,534 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 14:52:25,536 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 14:52:25,536 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 14:52:25,539 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 14:52:25,539 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 02:52:21" (1/3) ... [2024-11-07 14:52:25,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fe43e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:52:25, skipping insertion in model container [2024-11-07 14:52:25,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 02:52:22" (2/3) ... [2024-11-07 14:52:25,540 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27fe43e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 02:52:25, skipping insertion in model container [2024-11-07 14:52:25,540 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 02:52:25" (3/3) ... [2024-11-07 14:52:25,544 INFO L112 eAbstractionObserver]: Analyzing ICFG uthash_BER_test10-2.i [2024-11-07 14:52:25,555 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 14:52:25,555 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-07 14:52:25,636 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 14:52:25,644 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;@663f60e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 14:52:25,644 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-07 14:52:25,650 INFO L276 IsEmpty]: Start isEmpty. Operand has 1065 states, 1046 states have (on average 1.6281070745697896) internal successors, (1703), 1051 states have internal predecessors, (1703), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-07 14:52:25,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-11-07 14:52:25,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:25,656 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:25,656 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:25,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:25,659 INFO L85 PathProgramCache]: Analyzing trace with hash -617200611, now seen corresponding path program 1 times [2024-11-07 14:52:25,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:25,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632302078] [2024-11-07 14:52:25,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:25,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:25,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:25,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 14:52:25,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:25,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632302078] [2024-11-07 14:52:25,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632302078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:25,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:25,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-07 14:52:25,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107461823] [2024-11-07 14:52:25,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:25,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-07 14:52:25,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:25,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-07 14:52:25,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 14:52:25,792 INFO L87 Difference]: Start difference. First operand has 1065 states, 1046 states have (on average 1.6281070745697896) internal successors, (1703), 1051 states have internal predecessors, (1703), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 11 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:25,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:25,855 INFO L93 Difference]: Finished difference Result 2128 states and 3468 transitions. [2024-11-07 14:52:25,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-07 14:52:25,856 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-11-07 14:52:25,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:25,867 INFO L225 Difference]: With dead ends: 2128 [2024-11-07 14:52:25,867 INFO L226 Difference]: Without dead ends: 1026 [2024-11-07 14:52:25,872 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-07 14:52:25,874 INFO L432 NwaCegarLoop]: 1563 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:25,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1563 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 14:52:25,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2024-11-07 14:52:25,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 1026. [2024-11-07 14:52:25,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 1008 states have (on average 1.4722222222222223) internal successors, (1484), 1013 states have internal predecessors, (1484), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 14:52:25,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1511 transitions. [2024-11-07 14:52:25,934 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1511 transitions. Word has length 13 [2024-11-07 14:52:25,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:25,935 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1511 transitions. [2024-11-07 14:52:25,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:25,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1511 transitions. [2024-11-07 14:52:25,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-07 14:52:25,938 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:25,939 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:25,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 14:52:25,939 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:25,939 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:25,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1935262989, now seen corresponding path program 1 times [2024-11-07 14:52:25,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:25,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265308989] [2024-11-07 14:52:25,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:25,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 14:52:26,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:26,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265308989] [2024-11-07 14:52:26,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265308989] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:26,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:26,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 14:52:26,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971092331] [2024-11-07 14:52:26,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:26,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 14:52:26,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:26,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 14:52:26,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:26,259 INFO L87 Difference]: Start difference. First operand 1026 states and 1511 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:26,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:26,425 INFO L93 Difference]: Finished difference Result 2046 states and 3016 transitions. [2024-11-07 14:52:26,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 14:52:26,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2024-11-07 14:52:26,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:26,431 INFO L225 Difference]: With dead ends: 2046 [2024-11-07 14:52:26,432 INFO L226 Difference]: Without dead ends: 1412 [2024-11-07 14:52:26,433 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 [2024-11-07 14:52:26,434 INFO L432 NwaCegarLoop]: 1550 mSDtfsCounter, 548 mSDsluCounter, 2991 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 554 SdHoareTripleChecker+Valid, 4541 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:26,434 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [554 Valid, 4541 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 14:52:26,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-07 14:52:26,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1028. [2024-11-07 14:52:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1028 states, 1010 states have (on average 1.4712871287128713) internal successors, (1486), 1015 states have internal predecessors, (1486), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 14:52:26,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1028 states to 1028 states and 1513 transitions. [2024-11-07 14:52:26,468 INFO L78 Accepts]: Start accepts. Automaton has 1028 states and 1513 transitions. Word has length 68 [2024-11-07 14:52:26,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:26,469 INFO L471 AbstractCegarLoop]: Abstraction has 1028 states and 1513 transitions. [2024-11-07 14:52:26,469 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:26,469 INFO L276 IsEmpty]: Start isEmpty. Operand 1028 states and 1513 transitions. [2024-11-07 14:52:26,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2024-11-07 14:52:26,473 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:26,473 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:26,474 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 14:52:26,474 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:26,474 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:26,474 INFO L85 PathProgramCache]: Analyzing trace with hash -159013728, now seen corresponding path program 1 times [2024-11-07 14:52:26,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:26,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [891352041] [2024-11-07 14:52:26,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:26,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:26,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:26,979 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 14:52:26,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:26,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [891352041] [2024-11-07 14:52:26,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [891352041] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:26,980 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:26,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 14:52:26,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591063812] [2024-11-07 14:52:26,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:26,980 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 14:52:26,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:26,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 14:52:26,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-07 14:52:26,981 INFO L87 Difference]: Start difference. First operand 1028 states and 1513 transitions. Second operand has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:27,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:27,137 INFO L93 Difference]: Finished difference Result 2436 states and 3581 transitions. [2024-11-07 14:52:27,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 14:52:27,138 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 145 [2024-11-07 14:52:27,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:27,144 INFO L225 Difference]: With dead ends: 2436 [2024-11-07 14:52:27,144 INFO L226 Difference]: Without dead ends: 1412 [2024-11-07 14:52:27,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-07 14:52:27,146 INFO L432 NwaCegarLoop]: 1557 mSDtfsCounter, 1090 mSDsluCounter, 3542 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 5099 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:27,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 5099 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 14:52:27,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1412 states. [2024-11-07 14:52:27,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1412 to 1031. [2024-11-07 14:52:27,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 1013 states have (on average 1.4698914116485686) internal successors, (1489), 1018 states have internal predecessors, (1489), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 14:52:27,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1516 transitions. [2024-11-07 14:52:27,178 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1516 transitions. Word has length 145 [2024-11-07 14:52:27,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:27,178 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1516 transitions. [2024-11-07 14:52:27,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.833333333333332) internal successors, (143), 6 states have internal predecessors, (143), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:27,178 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1516 transitions. [2024-11-07 14:52:27,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-07 14:52:27,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:27,180 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:27,180 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 14:52:27,181 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:27,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:27,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1127309136, now seen corresponding path program 1 times [2024-11-07 14:52:27,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:27,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540848613] [2024-11-07 14:52:27,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:27,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:27,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:27,543 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 14:52:27,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:27,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540848613] [2024-11-07 14:52:27,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540848613] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:27,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:27,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 14:52:27,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135854580] [2024-11-07 14:52:27,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:27,544 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 14:52:27,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:27,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 14:52:27,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:27,545 INFO L87 Difference]: Start difference. First operand 1031 states and 1516 transitions. Second operand has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:27,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:27,624 INFO L93 Difference]: Finished difference Result 2013 states and 2959 transitions. [2024-11-07 14:52:27,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 14:52:27,624 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-07 14:52:27,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:27,628 INFO L225 Difference]: With dead ends: 2013 [2024-11-07 14:52:27,628 INFO L226 Difference]: Without dead ends: 989 [2024-11-07 14:52:27,630 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-07 14:52:27,632 INFO L432 NwaCegarLoop]: 1409 mSDtfsCounter, 30 mSDsluCounter, 2799 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 4208 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:27,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 4208 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 14:52:27,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 989 states. [2024-11-07 14:52:27,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 989 to 989. [2024-11-07 14:52:27,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 989 states, 971 states have (on average 1.454170957775489) internal successors, (1412), 976 states have internal predecessors, (1412), 14 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 10 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-07 14:52:27,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 989 states to 989 states and 1439 transitions. [2024-11-07 14:52:27,660 INFO L78 Accepts]: Start accepts. Automaton has 989 states and 1439 transitions. Word has length 216 [2024-11-07 14:52:27,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:27,661 INFO L471 AbstractCegarLoop]: Abstraction has 989 states and 1439 transitions. [2024-11-07 14:52:27,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 53.5) internal successors, (214), 4 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:27,661 INFO L276 IsEmpty]: Start isEmpty. Operand 989 states and 1439 transitions. [2024-11-07 14:52:27,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2024-11-07 14:52:27,664 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:27,664 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:27,664 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 14:52:27,664 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:27,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:27,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1916424380, now seen corresponding path program 1 times [2024-11-07 14:52:27,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:27,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012932384] [2024-11-07 14:52:27,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:27,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:27,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:27,879 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 14:52:27,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:27,880 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012932384] [2024-11-07 14:52:27,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012932384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:27,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:27,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-07 14:52:27,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523838852] [2024-11-07 14:52:27,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:27,881 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 14:52:27,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:27,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 14:52:27,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 14:52:27,881 INFO L87 Difference]: Start difference. First operand 989 states and 1439 transitions. Second operand has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:27,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:27,954 INFO L93 Difference]: Finished difference Result 2502 states and 3654 transitions. [2024-11-07 14:52:27,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 14:52:27,955 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 216 [2024-11-07 14:52:27,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:27,960 INFO L225 Difference]: With dead ends: 2502 [2024-11-07 14:52:27,960 INFO L226 Difference]: Without dead ends: 1520 [2024-11-07 14:52:27,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-07 14:52:27,962 INFO L432 NwaCegarLoop]: 1426 mSDtfsCounter, 716 mSDsluCounter, 1408 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 719 SdHoareTripleChecker+Valid, 2834 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:27,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [719 Valid, 2834 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 14:52:27,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1520 states. [2024-11-07 14:52:27,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1520 to 1361. [2024-11-07 14:52:27,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1361 states, 1341 states have (on average 1.4571215510812827) internal successors, (1954), 1346 states have internal predecessors, (1954), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-07 14:52:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1361 states to 1361 states and 1985 transitions. [2024-11-07 14:52:27,993 INFO L78 Accepts]: Start accepts. Automaton has 1361 states and 1985 transitions. Word has length 216 [2024-11-07 14:52:27,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:27,993 INFO L471 AbstractCegarLoop]: Abstraction has 1361 states and 1985 transitions. [2024-11-07 14:52:27,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.33333333333333) internal successors, (214), 3 states have internal predecessors, (214), 1 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-07 14:52:27,994 INFO L276 IsEmpty]: Start isEmpty. Operand 1361 states and 1985 transitions. [2024-11-07 14:52:27,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-07 14:52:27,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:27,998 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:27,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 14:52:27,998 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:27,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:27,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1484683831, now seen corresponding path program 1 times [2024-11-07 14:52:27,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:27,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441164438] [2024-11-07 14:52:27,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:27,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:28,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:28,344 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:28,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:28,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:28,350 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 14:52:28,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:28,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441164438] [2024-11-07 14:52:28,350 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441164438] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:28,350 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:28,351 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 14:52:28,351 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609653085] [2024-11-07 14:52:28,351 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:28,351 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 14:52:28,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:28,352 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 14:52:28,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 14:52:28,352 INFO L87 Difference]: Start difference. First operand 1361 states and 1985 transitions. Second operand has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 14:52:28,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:28,755 INFO L93 Difference]: Finished difference Result 2591 states and 3790 transitions. [2024-11-07 14:52:28,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 14:52:28,756 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-07 14:52:28,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:28,761 INFO L225 Difference]: With dead ends: 2591 [2024-11-07 14:52:28,761 INFO L226 Difference]: Without dead ends: 1322 [2024-11-07 14:52:28,762 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 14:52:28,763 INFO L432 NwaCegarLoop]: 1301 mSDtfsCounter, 53 mSDsluCounter, 3751 mSDsCounter, 0 mSdLazyCounter, 266 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 5052 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:28,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 5052 Invalid, 296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 266 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 14:52:28,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2024-11-07 14:52:28,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1319. [2024-11-07 14:52:28,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1299 states have (on average 1.4449576597382603) internal successors, (1877), 1304 states have internal predecessors, (1877), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-07 14:52:28,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1908 transitions. [2024-11-07 14:52:28,789 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1908 transitions. Word has length 231 [2024-11-07 14:52:28,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:28,790 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1908 transitions. [2024-11-07 14:52:28,790 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 44.4) internal successors, (222), 4 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 14:52:28,790 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1908 transitions. [2024-11-07 14:52:28,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-07 14:52:28,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:28,792 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:28,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-07 14:52:28,793 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:28,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:28,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1108876867, now seen corresponding path program 1 times [2024-11-07 14:52:28,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:28,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007056407] [2024-11-07 14:52:28,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:28,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:28,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:29,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:29,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:29,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:29,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:29,069 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 14:52:29,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:29,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007056407] [2024-11-07 14:52:29,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007056407] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:29,070 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:29,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 14:52:29,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637730857] [2024-11-07 14:52:29,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:29,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 14:52:29,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:29,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 14:52:29,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:29,071 INFO L87 Difference]: Start difference. First operand 1319 states and 1908 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 14:52:29,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:29,490 INFO L93 Difference]: Finished difference Result 2549 states and 3702 transitions. [2024-11-07 14:52:29,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 14:52:29,491 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-07 14:52:29,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:29,496 INFO L225 Difference]: With dead ends: 2549 [2024-11-07 14:52:29,497 INFO L226 Difference]: Without dead ends: 1322 [2024-11-07 14:52:29,499 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:29,499 INFO L432 NwaCegarLoop]: 1314 mSDtfsCounter, 24 mSDsluCounter, 2479 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:29,500 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3793 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 14:52:29,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1322 states. [2024-11-07 14:52:29,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1322 to 1319. [2024-11-07 14:52:29,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1319 states, 1299 states have (on average 1.4426481909160893) internal successors, (1874), 1304 states have internal predecessors, (1874), 16 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 12 states have call predecessors, (15), 15 states have call successors, (15) [2024-11-07 14:52:29,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1319 states to 1319 states and 1905 transitions. [2024-11-07 14:52:29,530 INFO L78 Accepts]: Start accepts. Automaton has 1319 states and 1905 transitions. Word has length 231 [2024-11-07 14:52:29,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:29,530 INFO L471 AbstractCegarLoop]: Abstraction has 1319 states and 1905 transitions. [2024-11-07 14:52:29,531 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 14:52:29,531 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states and 1905 transitions. [2024-11-07 14:52:29,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-07 14:52:29,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:29,533 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:29,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-07 14:52:29,533 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:29,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash -618268095, now seen corresponding path program 1 times [2024-11-07 14:52:29,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:29,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191582827] [2024-11-07 14:52:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:29,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:29,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:29,851 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:29,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:29,856 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:29,863 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 14:52:29,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:29,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191582827] [2024-11-07 14:52:29,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191582827] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:29,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:29,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 14:52:29,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1167906560] [2024-11-07 14:52:29,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:29,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 14:52:29,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:29,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 14:52:29,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:29,866 INFO L87 Difference]: Start difference. First operand 1319 states and 1905 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 14:52:30,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:30,226 INFO L93 Difference]: Finished difference Result 3120 states and 4530 transitions. [2024-11-07 14:52:30,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 14:52:30,226 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 231 [2024-11-07 14:52:30,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:30,233 INFO L225 Difference]: With dead ends: 3120 [2024-11-07 14:52:30,233 INFO L226 Difference]: Without dead ends: 1893 [2024-11-07 14:52:30,236 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:30,236 INFO L432 NwaCegarLoop]: 1513 mSDtfsCounter, 619 mSDsluCounter, 2683 mSDsCounter, 0 mSdLazyCounter, 191 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 4196 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:30,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 4196 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 191 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 14:52:30,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1893 states. [2024-11-07 14:52:30,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1893 to 1885. [2024-11-07 14:52:30,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1885 states, 1859 states have (on average 1.444862829478214) internal successors, (2686), 1864 states have internal predecessors, (2686), 22 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 18 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-07 14:52:30,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1885 states to 1885 states and 2729 transitions. [2024-11-07 14:52:30,282 INFO L78 Accepts]: Start accepts. Automaton has 1885 states and 2729 transitions. Word has length 231 [2024-11-07 14:52:30,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:30,282 INFO L471 AbstractCegarLoop]: Abstraction has 1885 states and 2729 transitions. [2024-11-07 14:52:30,283 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 3 states have internal predecessors, (222), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-07 14:52:30,283 INFO L276 IsEmpty]: Start isEmpty. Operand 1885 states and 2729 transitions. [2024-11-07 14:52:30,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2024-11-07 14:52:30,285 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:30,285 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:30,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-07 14:52:30,285 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:30,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:30,286 INFO L85 PathProgramCache]: Analyzing trace with hash 7827179, now seen corresponding path program 1 times [2024-11-07 14:52:30,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:30,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921895475] [2024-11-07 14:52:30,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:30,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:30,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:30,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:30,665 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:30,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:30,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:52:30,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:30,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:52:30,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:30,680 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:52:30,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:30,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921895475] [2024-11-07 14:52:30,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921895475] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:30,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:30,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 14:52:30,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288197613] [2024-11-07 14:52:30,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:30,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 14:52:30,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:30,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 14:52:30,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 14:52:30,686 INFO L87 Difference]: Start difference. First operand 1885 states and 2729 transitions. Second operand has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-07 14:52:32,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:32,576 INFO L93 Difference]: Finished difference Result 4073 states and 5947 transitions. [2024-11-07 14:52:32,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 14:52:32,576 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 246 [2024-11-07 14:52:32,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:32,585 INFO L225 Difference]: With dead ends: 4073 [2024-11-07 14:52:32,585 INFO L226 Difference]: Without dead ends: 2426 [2024-11-07 14:52:32,588 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-07 14:52:32,588 INFO L432 NwaCegarLoop]: 1389 mSDtfsCounter, 5576 mSDsluCounter, 2679 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5587 SdHoareTripleChecker+Valid, 4068 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:32,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5587 Valid, 4068 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-07 14:52:32,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2426 states. [2024-11-07 14:52:32,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2426 to 1456. [2024-11-07 14:52:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1456 states, 1435 states have (on average 1.4292682926829268) internal successors, (2051), 1440 states have internal predecessors, (2051), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 14:52:32,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1456 states to 1456 states and 2084 transitions. [2024-11-07 14:52:32,634 INFO L78 Accepts]: Start accepts. Automaton has 1456 states and 2084 transitions. Word has length 246 [2024-11-07 14:52:32,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:32,635 INFO L471 AbstractCegarLoop]: Abstraction has 1456 states and 2084 transitions. [2024-11-07 14:52:32,635 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 37.833333333333336) internal successors, (227), 5 states have internal predecessors, (227), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-07 14:52:32,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1456 states and 2084 transitions. [2024-11-07 14:52:32,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-07 14:52:32,637 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:32,638 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:32,638 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-07 14:52:32,638 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:32,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:32,638 INFO L85 PathProgramCache]: Analyzing trace with hash -2128471489, now seen corresponding path program 1 times [2024-11-07 14:52:32,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:32,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390777128] [2024-11-07 14:52:32,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:32,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:32,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:33,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:33,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:33,044 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:33,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:33,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:52:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:33,057 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:52:33,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:33,063 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-07 14:52:33,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:33,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390777128] [2024-11-07 14:52:33,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390777128] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:33,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:33,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 14:52:33,063 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866358432] [2024-11-07 14:52:33,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:33,064 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 14:52:33,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:33,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 14:52:33,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 14:52:33,068 INFO L87 Difference]: Start difference. First operand 1456 states and 2084 transitions. Second operand has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:52:33,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:33,473 INFO L93 Difference]: Finished difference Result 2334 states and 3394 transitions. [2024-11-07 14:52:33,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 14:52:33,473 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 256 [2024-11-07 14:52:33,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:33,478 INFO L225 Difference]: With dead ends: 2334 [2024-11-07 14:52:33,478 INFO L226 Difference]: Without dead ends: 1417 [2024-11-07 14:52:33,479 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 14:52:33,480 INFO L432 NwaCegarLoop]: 1215 mSDtfsCounter, 53 mSDsluCounter, 3494 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 4709 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:33,480 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 4709 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 14:52:33,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2024-11-07 14:52:33,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1414. [2024-11-07 14:52:33,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1393 states have (on average 1.4170854271356783) internal successors, (1974), 1398 states have internal predecessors, (1974), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 14:52:33,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2007 transitions. [2024-11-07 14:52:33,512 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2007 transitions. Word has length 256 [2024-11-07 14:52:33,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:33,512 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 2007 transitions. [2024-11-07 14:52:33,512 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 47.2) internal successors, (236), 4 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:52:33,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2007 transitions. [2024-11-07 14:52:33,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-07 14:52:33,514 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:33,514 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:33,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 14:52:33,515 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:33,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:33,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1388163313, now seen corresponding path program 1 times [2024-11-07 14:52:33,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:33,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461395493] [2024-11-07 14:52:33,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:33,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:33,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:33,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:33,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:33,777 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:52:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:33,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:52:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-07 14:52:33,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:33,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461395493] [2024-11-07 14:52:33,783 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461395493] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:52:33,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:52:33,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 14:52:33,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381931574] [2024-11-07 14:52:33,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:52:33,784 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 14:52:33,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:33,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 14:52:33,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:33,785 INFO L87 Difference]: Start difference. First operand 1414 states and 2007 transitions. Second operand has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:52:34,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:34,133 INFO L93 Difference]: Finished difference Result 2267 states and 3277 transitions. [2024-11-07 14:52:34,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 14:52:34,133 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 256 [2024-11-07 14:52:34,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:34,139 INFO L225 Difference]: With dead ends: 2267 [2024-11-07 14:52:34,139 INFO L226 Difference]: Without dead ends: 1417 [2024-11-07 14:52:34,141 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 14:52:34,141 INFO L432 NwaCegarLoop]: 1229 mSDtfsCounter, 24 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 3535 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:34,142 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 3535 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 207 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 14:52:34,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1417 states. [2024-11-07 14:52:34,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1417 to 1414. [2024-11-07 14:52:34,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1393 states have (on average 1.4149318018664752) internal successors, (1971), 1398 states have internal predecessors, (1971), 17 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 13 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-07 14:52:34,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2004 transitions. [2024-11-07 14:52:34,179 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2004 transitions. Word has length 256 [2024-11-07 14:52:34,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:34,179 INFO L471 AbstractCegarLoop]: Abstraction has 1414 states and 2004 transitions. [2024-11-07 14:52:34,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 59.0) internal successors, (236), 3 states have internal predecessors, (236), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:52:34,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2004 transitions. [2024-11-07 14:52:34,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2024-11-07 14:52:34,182 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:34,182 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:34,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 14:52:34,182 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:34,182 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:34,182 INFO L85 PathProgramCache]: Analyzing trace with hash -69918475, now seen corresponding path program 1 times [2024-11-07 14:52:34,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:34,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086428364] [2024-11-07 14:52:34,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:34,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:34,941 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:34,949 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:34,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:34,953 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:52:34,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:34,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:52:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:34,962 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:52:34,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:34,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086428364] [2024-11-07 14:52:34,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086428364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 14:52:34,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [17682907] [2024-11-07 14:52:34,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:34,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:52:34,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 14:52:34,967 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 14:52:34,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-07 14:52:35,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:35,474 INFO L255 TraceCheckSpWp]: Trace formula consists of 1263 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 14:52:35,487 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 14:52:35,511 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 14:52:35,840 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:35,857 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:52:35,857 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 14:52:36,116 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:52:36,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [17682907] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 14:52:36,116 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 14:52:36,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 5] total 13 [2024-11-07 14:52:36,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124056796] [2024-11-07 14:52:36,117 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 14:52:36,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-07 14:52:36,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:36,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-07 14:52:36,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-07 14:52:36,119 INFO L87 Difference]: Start difference. First operand 1414 states and 2004 transitions. Second operand has 13 states, 13 states have (on average 43.15384615384615) internal successors, (561), 12 states have internal predecessors, (561), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:52:37,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:37,186 INFO L93 Difference]: Finished difference Result 3244 states and 4587 transitions. [2024-11-07 14:52:37,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-07 14:52:37,187 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 43.15384615384615) internal successors, (561), 12 states have internal predecessors, (561), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 256 [2024-11-07 14:52:37,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:37,195 INFO L225 Difference]: With dead ends: 3244 [2024-11-07 14:52:37,195 INFO L226 Difference]: Without dead ends: 2365 [2024-11-07 14:52:37,197 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 530 GetRequests, 508 SyntacticMatches, 7 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2024-11-07 14:52:37,197 INFO L432 NwaCegarLoop]: 1548 mSDtfsCounter, 2481 mSDsluCounter, 8531 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2512 SdHoareTripleChecker+Valid, 10079 SdHoareTripleChecker+Invalid, 907 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:37,197 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2512 Valid, 10079 Invalid, 907 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-07 14:52:37,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2024-11-07 14:52:37,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2068. [2024-11-07 14:52:37,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2068 states, 2035 states have (on average 1.3862407862407862) internal successors, (2821), 2040 states have internal predecessors, (2821), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-07 14:52:37,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2068 states to 2068 states and 2876 transitions. [2024-11-07 14:52:37,266 INFO L78 Accepts]: Start accepts. Automaton has 2068 states and 2876 transitions. Word has length 256 [2024-11-07 14:52:37,266 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:37,267 INFO L471 AbstractCegarLoop]: Abstraction has 2068 states and 2876 transitions. [2024-11-07 14:52:37,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 43.15384615384615) internal successors, (561), 12 states have internal predecessors, (561), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:52:37,268 INFO L276 IsEmpty]: Start isEmpty. Operand 2068 states and 2876 transitions. [2024-11-07 14:52:37,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 488 [2024-11-07 14:52:37,275 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:37,275 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:37,292 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 [2024-11-07 14:52:37,480 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-07 14:52:37,480 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:37,480 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:37,481 INFO L85 PathProgramCache]: Analyzing trace with hash 352700828, now seen corresponding path program 1 times [2024-11-07 14:52:37,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:37,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122501872] [2024-11-07 14:52:37,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:37,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:38,938 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:38,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:38,942 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:38,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:38,945 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:52:38,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:38,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:52:38,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:38,953 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-07 14:52:38,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:38,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122501872] [2024-11-07 14:52:38,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122501872] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 14:52:38,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1720132538] [2024-11-07 14:52:38,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:38,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:52:38,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 14:52:38,956 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 14:52:38,957 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-07 14:52:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:39,677 INFO L255 TraceCheckSpWp]: Trace formula consists of 2403 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-07 14:52:39,689 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 14:52:39,698 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 14:52:40,018 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:40,047 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-07 14:52:40,047 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 14:52:40,281 INFO L134 CoverageAnalysis]: Checked inductivity of 488 backedges. 234 proven. 5 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2024-11-07 14:52:40,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1720132538] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 14:52:40,281 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 14:52:40,281 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 5] total 14 [2024-11-07 14:52:40,281 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289996377] [2024-11-07 14:52:40,281 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 14:52:40,282 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-07 14:52:40,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:40,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-07 14:52:40,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2024-11-07 14:52:40,283 INFO L87 Difference]: Start difference. First operand 2068 states and 2876 transitions. Second operand has 14 states, 14 states have (on average 46.285714285714285) internal successors, (648), 13 states have internal predecessors, (648), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:52:41,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:41,951 INFO L93 Difference]: Finished difference Result 3985 states and 5573 transitions. [2024-11-07 14:52:41,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 14:52:41,952 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 46.285714285714285) internal successors, (648), 13 states have internal predecessors, (648), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 487 [2024-11-07 14:52:41,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:41,959 INFO L225 Difference]: With dead ends: 3985 [2024-11-07 14:52:41,959 INFO L226 Difference]: Without dead ends: 2365 [2024-11-07 14:52:41,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 996 GetRequests, 971 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=287, Unknown=0, NotChecked=0, Total=380 [2024-11-07 14:52:41,961 INFO L432 NwaCegarLoop]: 1574 mSDtfsCounter, 1981 mSDsluCounter, 10794 mSDsCounter, 0 mSdLazyCounter, 757 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2011 SdHoareTripleChecker+Valid, 12368 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 757 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:41,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2011 Valid, 12368 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 757 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-07 14:52:41,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2024-11-07 14:52:41,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2071. [2024-11-07 14:52:42,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2071 states, 2038 states have (on average 1.3846908734052994) internal successors, (2822), 2043 states have internal predecessors, (2822), 28 states have call successors, (28), 4 states have call predecessors, (28), 4 states have return successors, (27), 24 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-07 14:52:42,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2071 states to 2071 states and 2877 transitions. [2024-11-07 14:52:42,004 INFO L78 Accepts]: Start accepts. Automaton has 2071 states and 2877 transitions. Word has length 487 [2024-11-07 14:52:42,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:42,004 INFO L471 AbstractCegarLoop]: Abstraction has 2071 states and 2877 transitions. [2024-11-07 14:52:42,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 46.285714285714285) internal successors, (648), 13 states have internal predecessors, (648), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:52:42,005 INFO L276 IsEmpty]: Start isEmpty. Operand 2071 states and 2877 transitions. [2024-11-07 14:52:42,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 701 [2024-11-07 14:52:42,013 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:42,013 INFO L215 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:42,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-07 14:52:42,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:52:42,218 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:42,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:42,218 INFO L85 PathProgramCache]: Analyzing trace with hash -156977594, now seen corresponding path program 1 times [2024-11-07 14:52:42,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:42,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270833076] [2024-11-07 14:52:42,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:42,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:42,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:45,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:45,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:45,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:45,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:45,631 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:52:45,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:45,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:52:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:45,638 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:52:45,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:45,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270833076] [2024-11-07 14:52:45,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270833076] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 14:52:45,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646547276] [2024-11-07 14:52:45,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:45,638 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:52:45,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 14:52:45,643 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 14:52:45,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-07 14:52:46,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:46,565 INFO L255 TraceCheckSpWp]: Trace formula consists of 3384 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 14:52:46,575 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 14:52:46,580 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 14:52:46,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:47,192 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:47,440 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:47,608 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:47,628 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:52:47,628 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 14:52:48,325 INFO L134 CoverageAnalysis]: Checked inductivity of 908 backedges. 0 proven. 884 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:52:48,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646547276] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 14:52:48,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 14:52:48,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 25 [2024-11-07 14:52:48,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [325797931] [2024-11-07 14:52:48,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 14:52:48,327 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-07 14:52:48,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:48,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-07 14:52:48,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=184, Invalid=416, Unknown=0, NotChecked=0, Total=600 [2024-11-07 14:52:48,329 INFO L87 Difference]: Start difference. First operand 2071 states and 2877 transitions. Second operand has 25 states, 25 states have (on average 75.72) internal successors, (1893), 24 states have internal predecessors, (1893), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:52:50,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:52:50,305 INFO L93 Difference]: Finished difference Result 5002 states and 6963 transitions. [2024-11-07 14:52:50,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-07 14:52:50,306 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 75.72) internal successors, (1893), 24 states have internal predecessors, (1893), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 700 [2024-11-07 14:52:50,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:52:50,326 INFO L225 Difference]: With dead ends: 5002 [2024-11-07 14:52:50,327 INFO L226 Difference]: Without dead ends: 4123 [2024-11-07 14:52:50,331 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1433 GetRequests, 1393 SyntacticMatches, 7 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=324, Invalid=866, Unknown=0, NotChecked=0, Total=1190 [2024-11-07 14:52:50,332 INFO L432 NwaCegarLoop]: 2682 mSDtfsCounter, 6787 mSDsluCounter, 22474 mSDsCounter, 0 mSdLazyCounter, 1453 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6866 SdHoareTripleChecker+Valid, 25156 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-07 14:52:50,332 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6866 Valid, 25156 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1453 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-07 14:52:50,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2024-11-07 14:52:50,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 3826. [2024-11-07 14:52:50,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3826 states, 3769 states have (on average 1.358981162111966) internal successors, (5122), 3774 states have internal predecessors, (5122), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-07 14:52:50,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3826 states to 3826 states and 5225 transitions. [2024-11-07 14:52:50,450 INFO L78 Accepts]: Start accepts. Automaton has 3826 states and 5225 transitions. Word has length 700 [2024-11-07 14:52:50,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:52:50,451 INFO L471 AbstractCegarLoop]: Abstraction has 3826 states and 5225 transitions. [2024-11-07 14:52:50,451 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 75.72) internal successors, (1893), 24 states have internal predecessors, (1893), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:52:50,451 INFO L276 IsEmpty]: Start isEmpty. Operand 3826 states and 5225 transitions. [2024-11-07 14:52:50,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1163 [2024-11-07 14:52:50,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:52:50,484 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:52:50,507 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 [2024-11-07 14:52:50,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:52:50,688 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:52:50,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:52:50,689 INFO L85 PathProgramCache]: Analyzing trace with hash -664295770, now seen corresponding path program 1 times [2024-11-07 14:52:50,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:52:50,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398769472] [2024-11-07 14:52:50,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:50,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:52:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:56,761 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:52:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:56,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:52:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:56,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:52:56,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:56,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:52:56,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:56,784 INFO L134 CoverageAnalysis]: Checked inductivity of 3911 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2024-11-07 14:52:56,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:52:56,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398769472] [2024-11-07 14:52:56,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398769472] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 14:52:56,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [654374664] [2024-11-07 14:52:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:52:56,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:52:56,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 14:52:56,791 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 14:52:56,792 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-07 14:52:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:52:58,343 INFO L255 TraceCheckSpWp]: Trace formula consists of 5664 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-07 14:52:58,361 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 14:52:58,369 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 14:52:58,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:58,772 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:58,920 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:59,075 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:52:59,104 INFO L134 CoverageAnalysis]: Checked inductivity of 3911 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2024-11-07 14:52:59,104 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 14:52:59,833 INFO L134 CoverageAnalysis]: Checked inductivity of 3911 backedges. 1851 proven. 896 refuted. 0 times theorem prover too weak. 1164 trivial. 0 not checked. [2024-11-07 14:52:59,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [654374664] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 14:52:59,833 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 14:52:59,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9, 8] total 26 [2024-11-07 14:52:59,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206819408] [2024-11-07 14:52:59,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 14:52:59,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-07 14:52:59,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:52:59,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-07 14:52:59,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=188, Invalid=462, Unknown=0, NotChecked=0, Total=650 [2024-11-07 14:52:59,837 INFO L87 Difference]: Start difference. First operand 3826 states and 5225 transitions. Second operand has 26 states, 26 states have (on average 76.15384615384616) internal successors, (1980), 25 states have internal predecessors, (1980), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:53:01,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:53:01,740 INFO L93 Difference]: Finished difference Result 6622 states and 9122 transitions. [2024-11-07 14:53:01,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-07 14:53:01,741 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 76.15384615384616) internal successors, (1980), 25 states have internal predecessors, (1980), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1162 [2024-11-07 14:53:01,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:53:01,752 INFO L225 Difference]: With dead ends: 6622 [2024-11-07 14:53:01,752 INFO L226 Difference]: Without dead ends: 4123 [2024-11-07 14:53:01,757 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2364 GetRequests, 2318 SyntacticMatches, 7 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=375, Invalid=1265, Unknown=0, NotChecked=0, Total=1640 [2024-11-07 14:53:01,757 INFO L432 NwaCegarLoop]: 2705 mSDtfsCounter, 6596 mSDsluCounter, 27561 mSDsCounter, 0 mSdLazyCounter, 1344 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6674 SdHoareTripleChecker+Valid, 30266 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-07 14:53:01,757 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6674 Valid, 30266 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1344 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-07 14:53:01,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4123 states. [2024-11-07 14:53:01,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4123 to 3829. [2024-11-07 14:53:01,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3829 states, 3772 states have (on average 1.357370095440085) internal successors, (5120), 3777 states have internal predecessors, (5120), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-07 14:53:01,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3829 states to 3829 states and 5223 transitions. [2024-11-07 14:53:01,823 INFO L78 Accepts]: Start accepts. Automaton has 3829 states and 5223 transitions. Word has length 1162 [2024-11-07 14:53:01,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:53:01,823 INFO L471 AbstractCegarLoop]: Abstraction has 3829 states and 5223 transitions. [2024-11-07 14:53:01,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 76.15384615384616) internal successors, (1980), 25 states have internal predecessors, (1980), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:53:01,824 INFO L276 IsEmpty]: Start isEmpty. Operand 3829 states and 5223 transitions. [2024-11-07 14:53:01,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1589 [2024-11-07 14:53:01,837 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:53:01,838 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:53:01,867 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 14:53:02,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-07 14:53:02,039 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:53:02,039 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:53:02,039 INFO L85 PathProgramCache]: Analyzing trace with hash 621832808, now seen corresponding path program 2 times [2024-11-07 14:53:02,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:53:02,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890857427] [2024-11-07 14:53:02,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:53:02,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:53:02,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:05,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:53:05,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:05,827 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:53:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:05,828 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:53:05,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:05,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:53:05,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 1320 proven. 1 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-07 14:53:05,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:53:05,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890857427] [2024-11-07 14:53:05,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890857427] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 14:53:05,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970239300] [2024-11-07 14:53:05,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-07 14:53:05,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:53:05,841 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 14:53:05,843 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 14:53:05,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-07 14:53:06,893 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-07 14:53:06,894 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-07 14:53:06,905 INFO L255 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-07 14:53:06,924 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 14:53:06,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 14:53:07,391 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6668 trivial. 0 not checked. [2024-11-07 14:53:07,391 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 14:53:07,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970239300] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:53:07,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 14:53:07,393 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2024-11-07 14:53:07,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449229737] [2024-11-07 14:53:07,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:53:07,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-07 14:53:07,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:53:07,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-07 14:53:07,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2024-11-07 14:53:07,395 INFO L87 Difference]: Start difference. First operand 3829 states and 5223 transitions. Second operand has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:53:08,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:53:08,228 INFO L93 Difference]: Finished difference Result 4675 states and 6479 transitions. [2024-11-07 14:53:08,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 14:53:08,228 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1588 [2024-11-07 14:53:08,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:53:08,240 INFO L225 Difference]: With dead ends: 4675 [2024-11-07 14:53:08,243 INFO L226 Difference]: Without dead ends: 3835 [2024-11-07 14:53:08,246 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1610 GetRequests, 1589 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2024-11-07 14:53:08,246 INFO L432 NwaCegarLoop]: 1236 mSDtfsCounter, 394 mSDsluCounter, 6532 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 396 SdHoareTripleChecker+Valid, 7768 SdHoareTripleChecker+Invalid, 653 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-07 14:53:08,247 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [396 Valid, 7768 Invalid, 653 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-07 14:53:08,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3835 states. [2024-11-07 14:53:08,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3835 to 3832. [2024-11-07 14:53:08,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3832 states, 3775 states have (on average 1.3570860927152317) internal successors, (5123), 3780 states have internal predecessors, (5123), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-07 14:53:08,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3832 states to 3832 states and 5226 transitions. [2024-11-07 14:53:08,381 INFO L78 Accepts]: Start accepts. Automaton has 3832 states and 5226 transitions. Word has length 1588 [2024-11-07 14:53:08,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:53:08,382 INFO L471 AbstractCegarLoop]: Abstraction has 3832 states and 5226 transitions. [2024-11-07 14:53:08,382 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 24.2) internal successors, (242), 10 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:53:08,382 INFO L276 IsEmpty]: Start isEmpty. Operand 3832 states and 5226 transitions. [2024-11-07 14:53:08,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1589 [2024-11-07 14:53:08,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:53:08,397 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:53:08,412 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-07 14:53:08,597 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-07 14:53:08,598 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:53:08,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:53:08,598 INFO L85 PathProgramCache]: Analyzing trace with hash 199306336, now seen corresponding path program 1 times [2024-11-07 14:53:08,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:53:08,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972270034] [2024-11-07 14:53:08,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:53:08,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:53:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:10,236 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:53:10,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:10,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:53:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:10,239 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:53:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:10,240 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:53:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:10,243 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6668 trivial. 0 not checked. [2024-11-07 14:53:10,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:53:10,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972270034] [2024-11-07 14:53:10,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972270034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 14:53:10,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 14:53:10,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 14:53:10,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549883780] [2024-11-07 14:53:10,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 14:53:10,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 14:53:10,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:53:10,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 14:53:10,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 14:53:10,245 INFO L87 Difference]: Start difference. First operand 3832 states and 5226 transitions. Second operand has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:53:10,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:53:10,586 INFO L93 Difference]: Finished difference Result 4681 states and 6526 transitions. [2024-11-07 14:53:10,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 14:53:10,586 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 1588 [2024-11-07 14:53:10,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:53:10,594 INFO L225 Difference]: With dead ends: 4681 [2024-11-07 14:53:10,594 INFO L226 Difference]: Without dead ends: 3829 [2024-11-07 14:53:10,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-07 14:53:10,595 INFO L432 NwaCegarLoop]: 1214 mSDtfsCounter, 32 mSDsluCounter, 3490 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 4704 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 14:53:10,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 4704 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 252 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 14:53:10,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3829 states. [2024-11-07 14:53:10,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3829 to 3823. [2024-11-07 14:53:10,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3823 states, 3766 states have (on average 1.35740839086564) internal successors, (5112), 3771 states have internal predecessors, (5112), 52 states have call successors, (52), 4 states have call predecessors, (52), 4 states have return successors, (51), 48 states have call predecessors, (51), 51 states have call successors, (51) [2024-11-07 14:53:10,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3823 states to 3823 states and 5215 transitions. [2024-11-07 14:53:10,651 INFO L78 Accepts]: Start accepts. Automaton has 3823 states and 5215 transitions. Word has length 1588 [2024-11-07 14:53:10,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:53:10,652 INFO L471 AbstractCegarLoop]: Abstraction has 3823 states and 5215 transitions. [2024-11-07 14:53:10,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 48.4) internal successors, (242), 4 states have internal predecessors, (242), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-07 14:53:10,652 INFO L276 IsEmpty]: Start isEmpty. Operand 3823 states and 5215 transitions. [2024-11-07 14:53:10,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1590 [2024-11-07 14:53:10,665 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:53:10,666 INFO L215 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:53:10,666 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 14:53:10,666 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:53:10,666 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:53:10,666 INFO L85 PathProgramCache]: Analyzing trace with hash 490168480, now seen corresponding path program 1 times [2024-11-07 14:53:10,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:53:10,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989029552] [2024-11-07 14:53:10,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:53:10,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:53:11,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:14,397 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-07 14:53:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:14,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 14:53:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:14,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2024-11-07 14:53:14,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:14,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2024-11-07 14:53:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 1320 proven. 1 refuted. 0 times theorem prover too weak. 5347 trivial. 0 not checked. [2024-11-07 14:53:14,405 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 14:53:14,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989029552] [2024-11-07 14:53:14,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989029552] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 14:53:14,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [438706639] [2024-11-07 14:53:14,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:53:14,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 14:53:14,406 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 14:53:14,408 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-07 14:53:14,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-07 14:53:16,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 14:53:16,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 7627 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-07 14:53:16,729 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 14:53:16,735 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-07 14:53:16,989 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:17,134 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:17,281 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:17,429 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:17,552 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:17,694 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:17,857 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:18,006 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:18,154 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:18,285 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2024-11-07 14:53:18,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 0 proven. 6644 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:53:18,306 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 14:53:19,775 INFO L134 CoverageAnalysis]: Checked inductivity of 6668 backedges. 0 proven. 6644 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-07 14:53:19,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [438706639] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 14:53:19,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 14:53:19,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 15, 14] total 32 [2024-11-07 14:53:19,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211430196] [2024-11-07 14:53:19,776 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 14:53:19,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-07 14:53:19,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 14:53:19,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-07 14:53:19,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=283, Invalid=709, Unknown=0, NotChecked=0, Total=992 [2024-11-07 14:53:19,785 INFO L87 Difference]: Start difference. First operand 3823 states and 5215 transitions. Second operand has 32 states, 32 states have (on average 105.625) internal successors, (3380), 31 states have internal predecessors, (3380), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:53:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 14:53:23,853 INFO L93 Difference]: Finished difference Result 7286 states and 10032 transitions. [2024-11-07 14:53:23,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2024-11-07 14:53:23,855 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 105.625) internal successors, (3380), 31 states have internal predecessors, (3380), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 1589 [2024-11-07 14:53:23,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 14:53:23,869 INFO L225 Difference]: With dead ends: 7286 [2024-11-07 14:53:23,869 INFO L226 Difference]: Without dead ends: 6116 [2024-11-07 14:53:23,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3240 GetRequests, 3156 SyntacticMatches, 7 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1819 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=1320, Invalid=4842, Unknown=0, NotChecked=0, Total=6162 [2024-11-07 14:53:23,875 INFO L432 NwaCegarLoop]: 4750 mSDtfsCounter, 9872 mSDsluCounter, 69200 mSDsCounter, 0 mSdLazyCounter, 3602 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10037 SdHoareTripleChecker+Valid, 73950 SdHoareTripleChecker+Invalid, 3710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-07 14:53:23,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10037 Valid, 73950 Invalid, 3710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [108 Valid, 3602 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-07 14:53:23,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6116 states. [2024-11-07 14:53:23,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6116 to 5961. [2024-11-07 14:53:23,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5961 states, 5864 states have (on average 1.3415757162346522) internal successors, (7867), 5869 states have internal predecessors, (7867), 92 states have call successors, (92), 4 states have call predecessors, (92), 4 states have return successors, (91), 88 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-07 14:53:23,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5961 states to 5961 states and 8050 transitions. [2024-11-07 14:53:23,978 INFO L78 Accepts]: Start accepts. Automaton has 5961 states and 8050 transitions. Word has length 1589 [2024-11-07 14:53:23,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 14:53:23,979 INFO L471 AbstractCegarLoop]: Abstraction has 5961 states and 8050 transitions. [2024-11-07 14:53:23,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 105.625) internal successors, (3380), 31 states have internal predecessors, (3380), 4 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2024-11-07 14:53:23,980 INFO L276 IsEmpty]: Start isEmpty. Operand 5961 states and 8050 transitions. [2024-11-07 14:53:24,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2514 [2024-11-07 14:53:24,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 14:53:24,012 INFO L215 NwaCegarLoop]: trace histogram [23, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 21, 21, 21, 12, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 14:53:24,057 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-07 14:53:24,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-07 14:53:24,213 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 14:53:24,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 14:53:24,214 INFO L85 PathProgramCache]: Analyzing trace with hash -190880032, now seen corresponding path program 1 times [2024-11-07 14:53:24,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 14:53:24,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126173046] [2024-11-07 14:53:24,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 14:53:24,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 14:53:25,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat