./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4f9af400 extending candidate: java ['java'] extending candidate: /usr/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/oracle-jdk-bin-*/bin/java ['java', '/usr/bin/java'] extending candidate: /opt/openjdk-*/bin/java ['java', '/usr/bin/java'] extending candidate: /usr/lib/jvm/java-*-openjdk-amd64/bin/java ['java', '/usr/bin/java', '/usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java', '/usr/lib/jvm/java-17-openjdk-amd64/bin/java', '/usr/lib/jvm/java-11-openjdk-amd64/bin/java', '/usr/lib/jvm/java-1.17.0-openjdk-amd64/bin/java'] ['/root/.sdkman/candidates/java/21.0.5-tem/bin/java', '-Dosgi.configuration.area=/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/config', '-Xmx15G', '-Xms4m', '-jar', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar', '-data', '@noDefault', '-ultimatedata', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data', '-tc', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml', '-i', '../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c', '-s', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf', '--cacsl2boogietranslator.entry.function', 'main', '--witnessprinter.witness.directory', '/storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux', '--witnessprinter.witness.filename', 'witness', '--witnessprinter.write.witness.besides.input.file', 'false', '--witnessprinter.graph.data.specification', 'CHECK( init(main()), LTL(G ! call(reach_error())) )\n\n', '--witnessprinter.graph.data.producer', 'Automizer', '--witnessprinter.graph.data.architecture', '32bit', '--witnessprinter.graph.data.programhash', 'ff5431a1a166986f09cf6e8d9d49f276cd283b8e2ac68f401ad73509be5780b8'] 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/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c -s /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ff5431a1a166986f09cf6e8d9d49f276cd283b8e2ac68f401ad73509be5780b8 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 01:43:25,083 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 01:43:25,135 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 01:43:25,139 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 01:43:25,139 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 01:43:25,162 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 01:43:25,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 01:43:25,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 01:43:25,164 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 01:43:25,164 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 01:43:25,164 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 01:43:25,164 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 01:43:25,164 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 01:43:25,165 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 01:43:25,165 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 01:43:25,165 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 01:43:25,166 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 01:43:25,166 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 01:43:25,166 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 01:43:25,166 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 01:43:25,166 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 01:43:25,166 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 01:43:25,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 01:43:25,166 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 01:43:25,166 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 01:43:25,166 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 01:43:25,167 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 01:43:25,167 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 01:43:25,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 01:43:25,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 01:43:25,167 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 01:43:25,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 01:43:25,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 01:43:25,168 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 01:43:25,168 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 01:43:25,168 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 01:43:25,168 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 01:43:25,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 01:43:25,168 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 01:43:25,169 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 01:43:25,169 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 01:43:25,169 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 01:43:25,169 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 -> ff5431a1a166986f09cf6e8d9d49f276cd283b8e2ac68f401ad73509be5780b8 [2024-11-07 01:43:25,385 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 01:43:25,393 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 01:43:25,395 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 01:43:25,396 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 01:43:25,396 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 01:43:25,396 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c [2024-11-07 01:43:26,516 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 01:43:26,755 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 01:43:26,755 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c [2024-11-07 01:43:26,771 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1e70770a6/174852cfd7384a22a9baf330ede8e38d/FLAGa9f7cec4b [2024-11-07 01:43:27,081 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/1e70770a6/174852cfd7384a22a9baf330ede8e38d [2024-11-07 01:43:27,083 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 01:43:27,086 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 01:43:27,087 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 01:43:27,087 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 01:43:27,090 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 01:43:27,091 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:43:27" (1/1) ... [2024-11-07 01:43:27,092 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180ee2b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:27, skipping insertion in model container [2024-11-07 01:43:27,092 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:43:27" (1/1) ... [2024-11-07 01:43:27,123 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 01:43:27,226 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/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c[913,926] [2024-11-07 01:43:27,267 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/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c[5977,5990] [2024-11-07 01:43:27,346 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 01:43:27,357 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 01:43:27,365 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/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c[913,926] [2024-11-07 01:43:27,375 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/combinations/pc_sfifo_1.cil-2+token_ring.11.cil-1.c[5977,5990] [2024-11-07 01:43:27,412 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 01:43:27,428 INFO L204 MainTranslator]: Completed translation [2024-11-07 01:43:27,430 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:27 WrapperNode [2024-11-07 01:43:27,430 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 01:43:27,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 01:43:27,432 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 01:43:27,432 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 01:43:27,436 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:27" (1/1) ... [2024-11-07 01:43:27,448 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:27" (1/1) ... [2024-11-07 01:43:27,484 INFO L138 Inliner]: procedures = 70, calls = 82, calls flagged for inlining = 44, calls inlined = 44, statements flattened = 1029 [2024-11-07 01:43:27,484 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 01:43:27,485 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 01:43:27,485 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 01:43:27,485 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 01:43:27,491 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:27" (1/1) ... [2024-11-07 01:43:27,491 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:27" (1/1) ... [2024-11-07 01:43:27,494 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:27" (1/1) ... [2024-11-07 01:43:27,510 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-07 01:43:27,510 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:27" (1/1) ... [2024-11-07 01:43:27,511 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:27" (1/1) ... [2024-11-07 01:43:27,525 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:27" (1/1) ... [2024-11-07 01:43:27,540 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:27" (1/1) ... [2024-11-07 01:43:27,545 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:27" (1/1) ... [2024-11-07 01:43:27,546 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:27" (1/1) ... [2024-11-07 01:43:27,553 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 01:43:27,554 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 01:43:27,554 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 01:43:27,554 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 01:43:27,554 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:27" (1/1) ... [2024-11-07 01:43:27,562 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 01:43:27,580 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 01:43:27,590 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 01:43:27,592 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 01:43:27,615 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 01:43:27,616 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-07 01:43:27,616 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-07 01:43:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-07 01:43:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-07 01:43:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-07 01:43:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-07 01:43:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-07 01:43:27,617 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-07 01:43:27,617 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-07 01:43:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-07 01:43:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-07 01:43:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-07 01:43:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-07 01:43:27,618 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-07 01:43:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 01:43:27,618 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-07 01:43:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-07 01:43:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 01:43:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 01:43:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-07 01:43:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-07 01:43:27,619 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-07 01:43:27,619 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-07 01:43:27,717 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 01:43:27,718 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 01:43:28,501 INFO L? ?]: Removed 125 outVars from TransFormulas that were not future-live. [2024-11-07 01:43:28,501 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 01:43:28,523 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 01:43:28,524 INFO L316 CfgBuilder]: Removed 18 assume(true) statements. [2024-11-07 01:43:28,524 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:43:28 BoogieIcfgContainer [2024-11-07 01:43:28,524 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 01:43:28,526 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 01:43:28,526 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 01:43:28,531 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 01:43:28,531 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:43:27" (1/3) ... [2024-11-07 01:43:28,532 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18150b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:43:28, skipping insertion in model container [2024-11-07 01:43:28,532 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:43:27" (2/3) ... [2024-11-07 01:43:28,533 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18150b25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:43:28, skipping insertion in model container [2024-11-07 01:43:28,533 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:43:28" (3/3) ... [2024-11-07 01:43:28,534 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.11.cil-1.c [2024-11-07 01:43:28,544 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 01:43:28,545 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-07 01:43:28,607 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 01:43:28,616 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;@3d19e80, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 01:43:28,616 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-07 01:43:28,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 449 states, 403 states have (on average 1.630272952853598) internal successors, (657), 410 states have internal predecessors, (657), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-07 01:43:28,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 01:43:28,632 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:28,632 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] [2024-11-07 01:43:28,633 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:28,636 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:28,637 INFO L85 PathProgramCache]: Analyzing trace with hash 128547143, now seen corresponding path program 1 times [2024-11-07 01:43:28,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:28,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022739043] [2024-11-07 01:43:28,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:28,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:28,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:28,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:43:28,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:28,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 01:43:28,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:28,930 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 01:43:28,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:28,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022739043] [2024-11-07 01:43:28,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022739043] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:28,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:28,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 01:43:28,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420612231] [2024-11-07 01:43:28,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:28,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 01:43:28,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:28,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 01:43:28,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 01:43:28,952 INFO L87 Difference]: Start difference. First operand has 449 states, 403 states have (on average 1.630272952853598) internal successors, (657), 410 states have internal predecessors, (657), 33 states have call successors, (33), 10 states have call predecessors, (33), 10 states have return successors, (33), 31 states have call predecessors, (33), 33 states have call successors, (33) Second operand has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 01:43:29,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:29,497 INFO L93 Difference]: Finished difference Result 943 states and 1516 transitions. [2024-11-07 01:43:29,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 01:43:29,501 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-07 01:43:29,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:29,514 INFO L225 Difference]: With dead ends: 943 [2024-11-07 01:43:29,516 INFO L226 Difference]: Without dead ends: 508 [2024-11-07 01:43:29,523 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 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 01:43:29,524 INFO L432 NwaCegarLoop]: 433 mSDtfsCounter, 908 mSDsluCounter, 417 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 932 SdHoareTripleChecker+Valid, 850 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:29,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [932 Valid, 850 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 01:43:29,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2024-11-07 01:43:29,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 502. [2024-11-07 01:43:29,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 502 states, 452 states have (on average 1.5176991150442478) internal successors, (686), 457 states have internal predecessors, (686), 37 states have call successors, (37), 12 states have call predecessors, (37), 11 states have return successors, (39), 33 states have call predecessors, (39), 33 states have call successors, (39) [2024-11-07 01:43:29,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 502 states to 502 states and 762 transitions. [2024-11-07 01:43:29,607 INFO L78 Accepts]: Start accepts. Automaton has 502 states and 762 transitions. Word has length 44 [2024-11-07 01:43:29,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:29,607 INFO L471 AbstractCegarLoop]: Abstraction has 502 states and 762 transitions. [2024-11-07 01:43:29,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.75) internal successors, (39), 3 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 01:43:29,608 INFO L276 IsEmpty]: Start isEmpty. Operand 502 states and 762 transitions. [2024-11-07 01:43:29,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-07 01:43:29,609 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:29,609 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] [2024-11-07 01:43:29,610 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 01:43:29,610 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:29,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:29,611 INFO L85 PathProgramCache]: Analyzing trace with hash 1547654301, now seen corresponding path program 1 times [2024-11-07 01:43:29,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:29,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009205100] [2024-11-07 01:43:29,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:29,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:29,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:29,684 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:43:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:29,702 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-07 01:43:29,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:29,708 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 01:43:29,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:29,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009205100] [2024-11-07 01:43:29,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009205100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:29,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:29,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 01:43:29,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714914292] [2024-11-07 01:43:29,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:29,710 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 01:43:29,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:29,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 01:43:29,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 01:43:29,710 INFO L87 Difference]: Start difference. First operand 502 states and 762 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 01:43:30,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:30,190 INFO L93 Difference]: Finished difference Result 750 states and 1102 transitions. [2024-11-07 01:43:30,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 01:43:30,191 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-07 01:43:30,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:30,194 INFO L225 Difference]: With dead ends: 750 [2024-11-07 01:43:30,195 INFO L226 Difference]: Without dead ends: 626 [2024-11-07 01:43:30,196 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 01:43:30,196 INFO L432 NwaCegarLoop]: 462 mSDtfsCounter, 350 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 599 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 599 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:30,196 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 1181 Invalid, 637 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 599 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 01:43:30,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 626 states. [2024-11-07 01:43:30,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 626 to 569. [2024-11-07 01:43:30,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 513 states have (on average 1.5009746588693957) internal successors, (770), 518 states have internal predecessors, (770), 40 states have call successors, (40), 15 states have call predecessors, (40), 14 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2024-11-07 01:43:30,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 852 transitions. [2024-11-07 01:43:30,236 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 852 transitions. Word has length 45 [2024-11-07 01:43:30,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:30,236 INFO L471 AbstractCegarLoop]: Abstraction has 569 states and 852 transitions. [2024-11-07 01:43:30,236 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 01:43:30,236 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 852 transitions. [2024-11-07 01:43:30,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-07 01:43:30,238 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:30,238 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] [2024-11-07 01:43:30,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 01:43:30,238 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:30,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:30,238 INFO L85 PathProgramCache]: Analyzing trace with hash 263296840, now seen corresponding path program 1 times [2024-11-07 01:43:30,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:30,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822147648] [2024-11-07 01:43:30,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:30,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:30,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:30,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:43:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:30,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-07 01:43:30,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:30,307 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 01:43:30,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:30,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822147648] [2024-11-07 01:43:30,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822147648] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:30,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:30,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 01:43:30,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81411947] [2024-11-07 01:43:30,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:30,308 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 01:43:30,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:30,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 01:43:30,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 01:43:30,308 INFO L87 Difference]: Start difference. First operand 569 states and 852 transitions. Second operand has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 01:43:30,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:30,702 INFO L93 Difference]: Finished difference Result 977 states and 1411 transitions. [2024-11-07 01:43:30,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 01:43:30,702 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 45 [2024-11-07 01:43:30,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:30,706 INFO L225 Difference]: With dead ends: 977 [2024-11-07 01:43:30,706 INFO L226 Difference]: Without dead ends: 786 [2024-11-07 01:43:30,707 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 01:43:30,708 INFO L432 NwaCegarLoop]: 433 mSDtfsCounter, 918 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 328 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 943 SdHoareTripleChecker+Valid, 847 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 328 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:30,708 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [943 Valid, 847 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 328 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 01:43:30,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 786 states. [2024-11-07 01:43:30,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 786 to 734. [2024-11-07 01:43:30,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 734 states, 659 states have (on average 1.456752655538695) internal successors, (960), 667 states have internal predecessors, (960), 51 states have call successors, (51), 22 states have call predecessors, (51), 22 states have return successors, (59), 45 states have call predecessors, (59), 47 states have call successors, (59) [2024-11-07 01:43:30,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 734 states to 734 states and 1070 transitions. [2024-11-07 01:43:30,744 INFO L78 Accepts]: Start accepts. Automaton has 734 states and 1070 transitions. Word has length 45 [2024-11-07 01:43:30,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:30,745 INFO L471 AbstractCegarLoop]: Abstraction has 734 states and 1070 transitions. [2024-11-07 01:43:30,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 10.0) internal successors, (40), 3 states have internal predecessors, (40), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-07 01:43:30,745 INFO L276 IsEmpty]: Start isEmpty. Operand 734 states and 1070 transitions. [2024-11-07 01:43:30,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-07 01:43:30,747 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:30,747 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 01:43:30,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 01:43:30,747 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:30,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:30,747 INFO L85 PathProgramCache]: Analyzing trace with hash -95817097, now seen corresponding path program 1 times [2024-11-07 01:43:30,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:30,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963607196] [2024-11-07 01:43:30,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:30,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:30,821 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:43:30,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:30,824 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 01:43:30,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:30,835 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-07 01:43:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-07 01:43:30,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:30,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963607196] [2024-11-07 01:43:30,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963607196] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:30,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:30,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 01:43:30,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786427853] [2024-11-07 01:43:30,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:30,842 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 01:43:30,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:30,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 01:43:30,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 01:43:30,843 INFO L87 Difference]: Start difference. First operand 734 states and 1070 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-07 01:43:31,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:31,292 INFO L93 Difference]: Finished difference Result 1318 states and 1855 transitions. [2024-11-07 01:43:31,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 01:43:31,292 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2024-11-07 01:43:31,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:31,296 INFO L225 Difference]: With dead ends: 1318 [2024-11-07 01:43:31,296 INFO L226 Difference]: Without dead ends: 962 [2024-11-07 01:43:31,296 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 01:43:31,297 INFO L432 NwaCegarLoop]: 484 mSDtfsCounter, 334 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 1234 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:31,297 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 1234 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 01:43:31,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-11-07 01:43:31,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 924. [2024-11-07 01:43:31,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 924 states, 825 states have (on average 1.406060606060606) internal successors, (1160), 835 states have internal predecessors, (1160), 65 states have call successors, (65), 30 states have call predecessors, (65), 32 states have return successors, (83), 59 states have call predecessors, (83), 61 states have call successors, (83) [2024-11-07 01:43:31,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1308 transitions. [2024-11-07 01:43:31,345 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1308 transitions. Word has length 62 [2024-11-07 01:43:31,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:31,346 INFO L471 AbstractCegarLoop]: Abstraction has 924 states and 1308 transitions. [2024-11-07 01:43:31,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-07 01:43:31,346 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1308 transitions. [2024-11-07 01:43:31,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-07 01:43:31,348 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:31,348 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 01:43:31,348 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 01:43:31,348 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:31,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:31,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1153922242, now seen corresponding path program 1 times [2024-11-07 01:43:31,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:31,349 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506750845] [2024-11-07 01:43:31,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:31,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:31,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:31,391 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:43:31,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:31,398 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 01:43:31,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:31,402 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:43:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:31,406 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-07 01:43:31,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:31,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506750845] [2024-11-07 01:43:31,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506750845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:31,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:31,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 01:43:31,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [41324721] [2024-11-07 01:43:31,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:31,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 01:43:31,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:31,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 01:43:31,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 01:43:31,407 INFO L87 Difference]: Start difference. First operand 924 states and 1308 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-07 01:43:31,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:31,773 INFO L93 Difference]: Finished difference Result 1577 states and 2161 transitions. [2024-11-07 01:43:31,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 01:43:31,773 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 67 [2024-11-07 01:43:31,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:31,778 INFO L225 Difference]: With dead ends: 1577 [2024-11-07 01:43:31,779 INFO L226 Difference]: Without dead ends: 1123 [2024-11-07 01:43:31,780 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 01:43:31,780 INFO L432 NwaCegarLoop]: 430 mSDtfsCounter, 905 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 323 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 323 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:31,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 846 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 323 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 01:43:31,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1123 states. [2024-11-07 01:43:31,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1123 to 1068. [2024-11-07 01:43:31,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1068 states, 953 states have (on average 1.3756558237145855) internal successors, (1311), 965 states have internal predecessors, (1311), 73 states have call successors, (73), 36 states have call predecessors, (73), 40 states have return successors, (97), 67 states have call predecessors, (97), 69 states have call successors, (97) [2024-11-07 01:43:31,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1068 states to 1068 states and 1481 transitions. [2024-11-07 01:43:31,830 INFO L78 Accepts]: Start accepts. Automaton has 1068 states and 1481 transitions. Word has length 67 [2024-11-07 01:43:31,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:31,830 INFO L471 AbstractCegarLoop]: Abstraction has 1068 states and 1481 transitions. [2024-11-07 01:43:31,830 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 3 states have internal predecessors, (47), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-07 01:43:31,830 INFO L276 IsEmpty]: Start isEmpty. Operand 1068 states and 1481 transitions. [2024-11-07 01:43:31,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-07 01:43:31,832 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:31,832 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 01:43:31,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 01:43:31,832 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:31,832 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:31,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1207908597, now seen corresponding path program 1 times [2024-11-07 01:43:31,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:31,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555993428] [2024-11-07 01:43:31,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:31,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:31,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:43:31,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:31,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 01:43:31,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:31,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 01:43:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:31,970 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-07 01:43:31,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:31,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555993428] [2024-11-07 01:43:31,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555993428] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 01:43:31,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063438955] [2024-11-07 01:43:31,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:31,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 01:43:31,971 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 01:43:31,973 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 01:43:31,975 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 01:43:32,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:32,086 INFO L255 TraceCheckSpWp]: Trace formula consists of 362 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 01:43:32,090 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 01:43:32,124 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 01:43:32,124 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 01:43:32,124 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063438955] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:32,124 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 01:43:32,124 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-07 01:43:32,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202654488] [2024-11-07 01:43:32,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:32,125 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 01:43:32,125 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:32,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 01:43:32,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:32,126 INFO L87 Difference]: Start difference. First operand 1068 states and 1481 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-07 01:43:32,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:32,174 INFO L93 Difference]: Finished difference Result 1611 states and 2204 transitions. [2024-11-07 01:43:32,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 01:43:32,174 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 68 [2024-11-07 01:43:32,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:32,180 INFO L225 Difference]: With dead ends: 1611 [2024-11-07 01:43:32,180 INFO L226 Difference]: Without dead ends: 1066 [2024-11-07 01:43:32,181 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:32,182 INFO L432 NwaCegarLoop]: 720 mSDtfsCounter, 72 mSDsluCounter, 643 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1363 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:32,182 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1363 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 01:43:32,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1066 states. [2024-11-07 01:43:32,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1066 to 1022. [2024-11-07 01:43:32,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1022 states, 913 states have (on average 1.3647316538882803) internal successors, (1246), 925 states have internal predecessors, (1246), 69 states have call successors, (69), 34 states have call predecessors, (69), 38 states have return successors, (91), 63 states have call predecessors, (91), 65 states have call successors, (91) [2024-11-07 01:43:32,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1022 states to 1022 states and 1406 transitions. [2024-11-07 01:43:32,239 INFO L78 Accepts]: Start accepts. Automaton has 1022 states and 1406 transitions. Word has length 68 [2024-11-07 01:43:32,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:32,240 INFO L471 AbstractCegarLoop]: Abstraction has 1022 states and 1406 transitions. [2024-11-07 01:43:32,240 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-07 01:43:32,240 INFO L276 IsEmpty]: Start isEmpty. Operand 1022 states and 1406 transitions. [2024-11-07 01:43:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-07 01:43:32,241 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:32,242 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 01:43:32,261 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 01:43:32,442 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 01:43:32,443 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:32,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:32,443 INFO L85 PathProgramCache]: Analyzing trace with hash 972063178, now seen corresponding path program 1 times [2024-11-07 01:43:32,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:32,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758264775] [2024-11-07 01:43:32,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:32,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:32,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:32,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:43:32,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:32,527 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 01:43:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:32,564 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 01:43:32,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:32,572 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 01:43:32,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:32,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758264775] [2024-11-07 01:43:32,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758264775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 01:43:32,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [38948358] [2024-11-07 01:43:32,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:32,573 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 01:43:32,573 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 01:43:32,576 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 01:43:32,577 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 01:43:32,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:32,660 INFO L255 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 01:43:32,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 01:43:32,731 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 01:43:32,731 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 01:43:32,771 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-07 01:43:32,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [38948358] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 01:43:32,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 01:43:32,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2024-11-07 01:43:32,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310147332] [2024-11-07 01:43:32,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:32,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 01:43:32,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:32,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 01:43:32,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-07 01:43:32,773 INFO L87 Difference]: Start difference. First operand 1022 states and 1406 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-07 01:43:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:32,906 INFO L93 Difference]: Finished difference Result 1074 states and 1468 transitions. [2024-11-07 01:43:32,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 01:43:32,906 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 68 [2024-11-07 01:43:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:32,910 INFO L225 Difference]: With dead ends: 1074 [2024-11-07 01:43:32,910 INFO L226 Difference]: Without dead ends: 1071 [2024-11-07 01:43:32,910 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-07 01:43:32,911 INFO L432 NwaCegarLoop]: 692 mSDtfsCounter, 1221 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 757 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:32,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 757 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 01:43:32,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1071 states. [2024-11-07 01:43:32,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1071 to 1021. [2024-11-07 01:43:32,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 913 states have (on average 1.362541073384447) internal successors, (1244), 924 states have internal predecessors, (1244), 68 states have call successors, (68), 34 states have call predecessors, (68), 38 states have return successors, (91), 63 states have call predecessors, (91), 65 states have call successors, (91) [2024-11-07 01:43:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1403 transitions. [2024-11-07 01:43:32,957 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1403 transitions. Word has length 68 [2024-11-07 01:43:32,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:32,957 INFO L471 AbstractCegarLoop]: Abstraction has 1021 states and 1403 transitions. [2024-11-07 01:43:32,957 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-07 01:43:32,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1403 transitions. [2024-11-07 01:43:32,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-07 01:43:32,959 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:32,959 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 01:43:32,972 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-07 01:43:33,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 01:43:33,164 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:33,164 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:33,164 INFO L85 PathProgramCache]: Analyzing trace with hash 67828389, now seen corresponding path program 1 times [2024-11-07 01:43:33,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:33,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160810517] [2024-11-07 01:43:33,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:33,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:33,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:33,199 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:43:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:33,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 01:43:33,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:33,226 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 01:43:33,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:33,233 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-07 01:43:33,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:33,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160810517] [2024-11-07 01:43:33,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160810517] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 01:43:33,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [445397313] [2024-11-07 01:43:33,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:33,233 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 01:43:33,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 01:43:33,235 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 01:43:33,237 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 01:43:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:33,334 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 01:43:33,336 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 01:43:33,533 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-07 01:43:33,534 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 01:43:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-07 01:43:33,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [445397313] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 01:43:33,587 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 01:43:33,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2024-11-07 01:43:33,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841168732] [2024-11-07 01:43:33,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 01:43:33,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 01:43:33,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:33,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 01:43:33,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-07 01:43:33,588 INFO L87 Difference]: Start difference. First operand 1021 states and 1403 transitions. Second operand has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-07 01:43:34,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:34,800 INFO L93 Difference]: Finished difference Result 2338 states and 3109 transitions. [2024-11-07 01:43:34,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-07 01:43:34,801 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) Word has length 69 [2024-11-07 01:43:34,801 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:34,807 INFO L225 Difference]: With dead ends: 2338 [2024-11-07 01:43:34,807 INFO L226 Difference]: Without dead ends: 1842 [2024-11-07 01:43:34,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 176 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=768, Unknown=0, NotChecked=0, Total=930 [2024-11-07 01:43:34,809 INFO L432 NwaCegarLoop]: 495 mSDtfsCounter, 1075 mSDsluCounter, 3216 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1107 SdHoareTripleChecker+Valid, 3711 SdHoareTripleChecker+Invalid, 2449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 2408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:34,809 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1107 Valid, 3711 Invalid, 2449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 2408 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-07 01:43:34,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1842 states. [2024-11-07 01:43:34,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1842 to 1374. [2024-11-07 01:43:34,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1374 states, 1227 states have (on average 1.321923390383048) internal successors, (1622), 1246 states have internal predecessors, (1622), 88 states have call successors, (88), 48 states have call predecessors, (88), 57 states have return successors, (125), 80 states have call predecessors, (125), 85 states have call successors, (125) [2024-11-07 01:43:34,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1374 states to 1374 states and 1835 transitions. [2024-11-07 01:43:34,860 INFO L78 Accepts]: Start accepts. Automaton has 1374 states and 1835 transitions. Word has length 69 [2024-11-07 01:43:34,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:34,860 INFO L471 AbstractCegarLoop]: Abstraction has 1374 states and 1835 transitions. [2024-11-07 01:43:34,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.727272727272727) internal successors, (151), 10 states have internal predecessors, (151), 7 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 7 states have call predecessors, (9), 7 states have call successors, (9) [2024-11-07 01:43:34,861 INFO L276 IsEmpty]: Start isEmpty. Operand 1374 states and 1835 transitions. [2024-11-07 01:43:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-07 01:43:34,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:34,864 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 01:43:34,878 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-07 01:43:35,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 01:43:35,065 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:35,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:35,066 INFO L85 PathProgramCache]: Analyzing trace with hash -161815255, now seen corresponding path program 1 times [2024-11-07 01:43:35,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:35,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086153775] [2024-11-07 01:43:35,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:35,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:35,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:35,145 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:43:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:35,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 01:43:35,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:35,181 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-07 01:43:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:35,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 01:43:35,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:35,190 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-07 01:43:35,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:35,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086153775] [2024-11-07 01:43:35,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086153775] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 01:43:35,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677814115] [2024-11-07 01:43:35,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:35,191 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 01:43:35,191 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 01:43:35,196 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 01:43:35,203 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 01:43:35,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:35,291 INFO L255 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 01:43:35,292 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 01:43:35,317 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-07 01:43:35,317 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 01:43:35,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677814115] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:35,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 01:43:35,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-07 01:43:35,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831704466] [2024-11-07 01:43:35,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:35,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 01:43:35,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:35,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 01:43:35,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:35,318 INFO L87 Difference]: Start difference. First operand 1374 states and 1835 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 01:43:35,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:35,370 INFO L93 Difference]: Finished difference Result 2039 states and 2676 transitions. [2024-11-07 01:43:35,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 01:43:35,370 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2024-11-07 01:43:35,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:35,374 INFO L225 Difference]: With dead ends: 2039 [2024-11-07 01:43:35,375 INFO L226 Difference]: Without dead ends: 1296 [2024-11-07 01:43:35,377 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:35,378 INFO L432 NwaCegarLoop]: 699 mSDtfsCounter, 629 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:35,378 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [629 Valid, 772 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 01:43:35,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1296 states. [2024-11-07 01:43:35,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1296 to 1287. [2024-11-07 01:43:35,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1287 states, 1150 states have (on average 1.32) internal successors, (1518), 1168 states have internal predecessors, (1518), 84 states have call successors, (84), 44 states have call predecessors, (84), 51 states have return successors, (117), 75 states have call predecessors, (117), 81 states have call successors, (117) [2024-11-07 01:43:35,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1287 states to 1287 states and 1719 transitions. [2024-11-07 01:43:35,442 INFO L78 Accepts]: Start accepts. Automaton has 1287 states and 1719 transitions. Word has length 88 [2024-11-07 01:43:35,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:35,442 INFO L471 AbstractCegarLoop]: Abstraction has 1287 states and 1719 transitions. [2024-11-07 01:43:35,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 01:43:35,442 INFO L276 IsEmpty]: Start isEmpty. Operand 1287 states and 1719 transitions. [2024-11-07 01:43:35,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-07 01:43:35,445 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:35,445 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 01:43:35,458 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-07 01:43:35,649 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,SelfDestructingSolverStorable8 [2024-11-07 01:43:35,650 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:35,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:35,650 INFO L85 PathProgramCache]: Analyzing trace with hash -2106897387, now seen corresponding path program 1 times [2024-11-07 01:43:35,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:35,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012509794] [2024-11-07 01:43:35,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:35,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:35,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:35,707 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:43:35,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:35,716 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 01:43:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:35,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-07 01:43:35,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:35,747 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-07 01:43:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:35,751 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-07 01:43:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:35,755 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 13 proven. 10 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-07 01:43:35,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:35,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012509794] [2024-11-07 01:43:35,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012509794] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 01:43:35,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [566568565] [2024-11-07 01:43:35,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:35,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 01:43:35,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 01:43:35,758 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 01:43:35,760 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 01:43:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:35,851 INFO L255 TraceCheckSpWp]: Trace formula consists of 456 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-07 01:43:35,853 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 01:43:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-07 01:43:35,865 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 01:43:35,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [566568565] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:35,865 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 01:43:35,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-07 01:43:35,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593440135] [2024-11-07 01:43:35,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:35,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 01:43:35,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:35,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 01:43:35,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:35,866 INFO L87 Difference]: Start difference. First operand 1287 states and 1719 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-07 01:43:35,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:35,898 INFO L93 Difference]: Finished difference Result 1664 states and 2180 transitions. [2024-11-07 01:43:35,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 01:43:35,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) Word has length 103 [2024-11-07 01:43:35,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:35,901 INFO L225 Difference]: With dead ends: 1664 [2024-11-07 01:43:35,901 INFO L226 Difference]: Without dead ends: 372 [2024-11-07 01:43:35,903 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:35,903 INFO L432 NwaCegarLoop]: 714 mSDtfsCounter, 61 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1359 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:35,903 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1359 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 01:43:35,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-07 01:43:35,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2024-11-07 01:43:35,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 338 states have (on average 1.5591715976331362) internal successors, (527), 340 states have internal predecessors, (527), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-07 01:43:35,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 579 transitions. [2024-11-07 01:43:35,914 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 579 transitions. Word has length 103 [2024-11-07 01:43:35,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:35,914 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 579 transitions. [2024-11-07 01:43:35,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-07 01:43:35,914 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 579 transitions. [2024-11-07 01:43:35,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:43:35,915 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:35,915 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:35,928 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-07 01:43:36,116 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,SelfDestructingSolverStorable9 [2024-11-07 01:43:36,116 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:36,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:36,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2106688411, now seen corresponding path program 1 times [2024-11-07 01:43:36,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:36,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759735785] [2024-11-07 01:43:36,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:36,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:36,147 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:36,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:43:36,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:36,238 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:43:36,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:36,252 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:43:36,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:36,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:43:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:36,261 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 01:43:36,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:36,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759735785] [2024-11-07 01:43:36,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759735785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:36,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:36,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 01:43:36,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719028791] [2024-11-07 01:43:36,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:36,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 01:43:36,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:36,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 01:43:36,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 01:43:36,262 INFO L87 Difference]: Start difference. First operand 372 states and 579 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:37,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:37,493 INFO L93 Difference]: Finished difference Result 865 states and 1369 transitions. [2024-11-07 01:43:37,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 01:43:37,494 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:43:37,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:37,496 INFO L225 Difference]: With dead ends: 865 [2024-11-07 01:43:37,497 INFO L226 Difference]: Without dead ends: 503 [2024-11-07 01:43:37,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-07 01:43:37,499 INFO L432 NwaCegarLoop]: 345 mSDtfsCounter, 982 mSDsluCounter, 408 mSDsCounter, 0 mSdLazyCounter, 960 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:37,499 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 753 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 960 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 01:43:37,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-07 01:43:37,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 372. [2024-11-07 01:43:37,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 338 states have (on average 1.5562130177514792) internal successors, (526), 340 states have internal predecessors, (526), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-07 01:43:37,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 578 transitions. [2024-11-07 01:43:37,530 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 578 transitions. Word has length 168 [2024-11-07 01:43:37,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:37,530 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 578 transitions. [2024-11-07 01:43:37,530 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:37,530 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 578 transitions. [2024-11-07 01:43:37,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:43:37,531 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:37,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:37,531 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-07 01:43:37,532 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:37,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:37,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1761860249, now seen corresponding path program 1 times [2024-11-07 01:43:37,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:37,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086239440] [2024-11-07 01:43:37,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:37,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:37,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:37,570 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:37,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:37,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:43:37,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:37,650 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:43:37,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:37,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:43:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:37,668 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:43:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:37,670 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 01:43:37,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:37,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086239440] [2024-11-07 01:43:37,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086239440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:37,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:37,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 01:43:37,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316513657] [2024-11-07 01:43:37,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:37,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 01:43:37,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:37,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 01:43:37,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 01:43:37,673 INFO L87 Difference]: Start difference. First operand 372 states and 578 transitions. Second operand has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:38,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:38,772 INFO L93 Difference]: Finished difference Result 857 states and 1352 transitions. [2024-11-07 01:43:38,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 01:43:38,772 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:43:38,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:38,774 INFO L225 Difference]: With dead ends: 857 [2024-11-07 01:43:38,774 INFO L226 Difference]: Without dead ends: 503 [2024-11-07 01:43:38,775 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-07 01:43:38,775 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 973 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 959 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:38,776 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 751 Invalid, 1017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 959 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-07 01:43:38,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 503 states. [2024-11-07 01:43:38,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 503 to 372. [2024-11-07 01:43:38,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 338 states have (on average 1.5532544378698225) internal successors, (525), 340 states have internal predecessors, (525), 27 states have call successors, (27), 7 states have call predecessors, (27), 6 states have return successors, (25), 25 states have call predecessors, (25), 25 states have call successors, (25) [2024-11-07 01:43:38,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 577 transitions. [2024-11-07 01:43:38,790 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 577 transitions. Word has length 168 [2024-11-07 01:43:38,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:38,790 INFO L471 AbstractCegarLoop]: Abstraction has 372 states and 577 transitions. [2024-11-07 01:43:38,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.4) internal successors, (157), 3 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:38,791 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 577 transitions. [2024-11-07 01:43:38,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:43:38,792 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:38,792 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:38,792 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 01:43:38,793 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:38,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:38,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1375997847, now seen corresponding path program 1 times [2024-11-07 01:43:38,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:38,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633660932] [2024-11-07 01:43:38,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:38,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:38,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:38,870 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:38,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:38,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:43:38,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:38,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:43:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:38,981 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:43:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:38,986 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:43:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:38,988 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 01:43:38,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:38,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633660932] [2024-11-07 01:43:38,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633660932] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:38,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:38,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 01:43:38,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670759695] [2024-11-07 01:43:38,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:38,989 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 01:43:38,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:38,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 01:43:38,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 01:43:38,990 INFO L87 Difference]: Start difference. First operand 372 states and 577 transitions. Second operand has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:40,829 INFO L93 Difference]: Finished difference Result 1354 states and 2152 transitions. [2024-11-07 01:43:40,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 01:43:40,829 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:43:40,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:40,832 INFO L225 Difference]: With dead ends: 1354 [2024-11-07 01:43:40,832 INFO L226 Difference]: Without dead ends: 1002 [2024-11-07 01:43:40,833 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-07 01:43:40,834 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 1479 mSDsluCounter, 968 mSDsCounter, 0 mSdLazyCounter, 2096 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1497 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 2208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 2096 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:40,834 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1497 Valid, 1284 Invalid, 2208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 2096 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-07 01:43:40,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1002 states. [2024-11-07 01:43:40,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1002 to 739. [2024-11-07 01:43:40,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 739 states, 678 states have (on average 1.5663716814159292) internal successors, (1062), 681 states have internal predecessors, (1062), 47 states have call successors, (47), 13 states have call predecessors, (47), 13 states have return successors, (48), 45 states have call predecessors, (48), 45 states have call successors, (48) [2024-11-07 01:43:40,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 1157 transitions. [2024-11-07 01:43:40,864 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 1157 transitions. Word has length 168 [2024-11-07 01:43:40,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:40,865 INFO L471 AbstractCegarLoop]: Abstraction has 739 states and 1157 transitions. [2024-11-07 01:43:40,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 26.166666666666668) internal successors, (157), 4 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:40,865 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 1157 transitions. [2024-11-07 01:43:40,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:43:40,866 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:40,866 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:40,866 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 01:43:40,867 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:40,867 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:40,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1996568941, now seen corresponding path program 1 times [2024-11-07 01:43:40,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:40,867 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200473005] [2024-11-07 01:43:40,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:40,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:40,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:40,948 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:40,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:43:40,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:41,049 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:43:41,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:41,071 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:43:41,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:41,077 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:43:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:41,080 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 01:43:41,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:41,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200473005] [2024-11-07 01:43:41,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200473005] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:41,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:41,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:41,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508116005] [2024-11-07 01:43:41,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:41,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:41,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:41,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:41,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:41,082 INFO L87 Difference]: Start difference. First operand 739 states and 1157 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:43,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:43,515 INFO L93 Difference]: Finished difference Result 2238 states and 3567 transitions. [2024-11-07 01:43:43,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 01:43:43,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:43:43,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:43,524 INFO L225 Difference]: With dead ends: 2238 [2024-11-07 01:43:43,524 INFO L226 Difference]: Without dead ends: 1519 [2024-11-07 01:43:43,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-07 01:43:43,528 INFO L432 NwaCegarLoop]: 369 mSDtfsCounter, 1613 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 2971 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1631 SdHoareTripleChecker+Valid, 1672 SdHoareTripleChecker+Invalid, 3069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 2971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:43,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1631 Valid, 1672 Invalid, 3069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 2971 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-07 01:43:43,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2024-11-07 01:43:43,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 1082. [2024-11-07 01:43:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 994 states have (on average 1.5603621730382293) internal successors, (1551), 998 states have internal predecessors, (1551), 67 states have call successors, (67), 19 states have call predecessors, (67), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2024-11-07 01:43:43,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1688 transitions. [2024-11-07 01:43:43,575 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1688 transitions. Word has length 168 [2024-11-07 01:43:43,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:43,575 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1688 transitions. [2024-11-07 01:43:43,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:43,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1688 transitions. [2024-11-07 01:43:43,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:43:43,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:43,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:43,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 01:43:43,578 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:43,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:43,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1658281391, now seen corresponding path program 1 times [2024-11-07 01:43:43,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:43,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [479471984] [2024-11-07 01:43:43,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:43,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:43,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:43,656 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:43,711 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:43:43,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:43,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:43:43,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:43,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:43:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:43,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:43:43,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:43,773 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 01:43:43,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:43,774 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [479471984] [2024-11-07 01:43:43,774 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [479471984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:43,774 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:43,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:43,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859297746] [2024-11-07 01:43:43,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:43,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:43,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:43,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:43,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:43,775 INFO L87 Difference]: Start difference. First operand 1082 states and 1688 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:45,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:45,083 INFO L93 Difference]: Finished difference Result 2595 states and 4132 transitions. [2024-11-07 01:43:45,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 01:43:45,084 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:43:45,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:45,088 INFO L225 Difference]: With dead ends: 2595 [2024-11-07 01:43:45,088 INFO L226 Difference]: Without dead ends: 1533 [2024-11-07 01:43:45,090 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-07 01:43:45,090 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 1078 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1097 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:45,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1097 Valid, 1253 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1713 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 01:43:45,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1533 states. [2024-11-07 01:43:45,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1533 to 1082. [2024-11-07 01:43:45,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 994 states have (on average 1.557344064386318) internal successors, (1548), 998 states have internal predecessors, (1548), 67 states have call successors, (67), 19 states have call predecessors, (67), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2024-11-07 01:43:45,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1685 transitions. [2024-11-07 01:43:45,134 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1685 transitions. Word has length 168 [2024-11-07 01:43:45,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:45,135 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1685 transitions. [2024-11-07 01:43:45,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:45,135 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1685 transitions. [2024-11-07 01:43:45,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:43:45,136 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:45,136 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:45,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 01:43:45,136 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:45,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:45,137 INFO L85 PathProgramCache]: Analyzing trace with hash -1231726893, now seen corresponding path program 1 times [2024-11-07 01:43:45,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:45,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502230857] [2024-11-07 01:43:45,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:45,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:45,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:45,197 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:45,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:45,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:43:45,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:45,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:43:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:45,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:43:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:45,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:43:45,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:45,328 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 01:43:45,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:45,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502230857] [2024-11-07 01:43:45,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502230857] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:45,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:45,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:45,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417666039] [2024-11-07 01:43:45,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:45,328 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:45,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:45,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:45,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:45,329 INFO L87 Difference]: Start difference. First operand 1082 states and 1685 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:46,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:46,618 INFO L93 Difference]: Finished difference Result 2591 states and 4115 transitions. [2024-11-07 01:43:46,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 01:43:46,619 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:43:46,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:46,625 INFO L225 Difference]: With dead ends: 2591 [2024-11-07 01:43:46,625 INFO L226 Difference]: Without dead ends: 1529 [2024-11-07 01:43:46,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-07 01:43:46,628 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 1231 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 1540 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 1635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:46,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 1051 Invalid, 1635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1540 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 01:43:46,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2024-11-07 01:43:46,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 1082. [2024-11-07 01:43:46,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 994 states have (on average 1.5543259557344065) internal successors, (1545), 998 states have internal predecessors, (1545), 67 states have call successors, (67), 19 states have call predecessors, (67), 20 states have return successors, (70), 66 states have call predecessors, (70), 65 states have call successors, (70) [2024-11-07 01:43:46,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1682 transitions. [2024-11-07 01:43:46,697 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1682 transitions. Word has length 168 [2024-11-07 01:43:46,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:46,698 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1682 transitions. [2024-11-07 01:43:46,699 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:46,699 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1682 transitions. [2024-11-07 01:43:46,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:43:46,700 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:46,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:46,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 01:43:46,700 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:46,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:46,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1772156399, now seen corresponding path program 1 times [2024-11-07 01:43:46,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:46,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988476534] [2024-11-07 01:43:46,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:46,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:46,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:46,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:46,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:43:46,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:46,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:43:46,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:46,898 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:43:46,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:46,904 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:43:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:46,906 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 01:43:46,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:46,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988476534] [2024-11-07 01:43:46,906 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988476534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:46,906 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:46,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:46,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463776648] [2024-11-07 01:43:46,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:46,907 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:46,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:46,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:46,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:46,908 INFO L87 Difference]: Start difference. First operand 1082 states and 1682 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:49,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:49,666 INFO L93 Difference]: Finished difference Result 3532 states and 5586 transitions. [2024-11-07 01:43:49,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 01:43:49,667 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:43:49,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:49,689 INFO L225 Difference]: With dead ends: 3532 [2024-11-07 01:43:49,690 INFO L226 Difference]: Without dead ends: 2470 [2024-11-07 01:43:49,692 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-07 01:43:49,693 INFO L432 NwaCegarLoop]: 559 mSDtfsCounter, 1502 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 3254 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1520 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 3320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:49,693 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1520 Valid, 2495 Invalid, 3320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3254 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-07 01:43:49,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2024-11-07 01:43:49,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 1777. [2024-11-07 01:43:49,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1635 states have (on average 1.5486238532110093) internal successors, (2532), 1641 states have internal predecessors, (2532), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2024-11-07 01:43:49,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2757 transitions. [2024-11-07 01:43:49,786 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2757 transitions. Word has length 168 [2024-11-07 01:43:49,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:49,787 INFO L471 AbstractCegarLoop]: Abstraction has 1777 states and 2757 transitions. [2024-11-07 01:43:49,787 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:49,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2757 transitions. [2024-11-07 01:43:49,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:43:49,789 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:49,789 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:49,789 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 01:43:49,789 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:49,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:49,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1928136941, now seen corresponding path program 1 times [2024-11-07 01:43:49,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:49,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [173318293] [2024-11-07 01:43:49,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:49,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:49,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:49,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:49,899 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:43:49,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:49,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:43:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:49,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:43:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:49,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:43:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:49,958 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 01:43:49,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:49,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [173318293] [2024-11-07 01:43:49,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [173318293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:49,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:49,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:49,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168144675] [2024-11-07 01:43:49,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:49,961 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:49,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:49,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:49,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:49,962 INFO L87 Difference]: Start difference. First operand 1777 states and 2757 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:51,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:51,247 INFO L93 Difference]: Finished difference Result 4213 states and 6648 transitions. [2024-11-07 01:43:51,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 01:43:51,247 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:43:51,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:51,255 INFO L225 Difference]: With dead ends: 4213 [2024-11-07 01:43:51,255 INFO L226 Difference]: Without dead ends: 2456 [2024-11-07 01:43:51,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-07 01:43:51,258 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 1075 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:51,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 1253 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1671 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 01:43:51,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2456 states. [2024-11-07 01:43:51,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2456 to 1777. [2024-11-07 01:43:51,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1635 states have (on average 1.545565749235474) internal successors, (2527), 1641 states have internal predecessors, (2527), 107 states have call successors, (107), 31 states have call predecessors, (107), 34 states have return successors, (118), 108 states have call predecessors, (118), 105 states have call successors, (118) [2024-11-07 01:43:51,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2752 transitions. [2024-11-07 01:43:51,378 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2752 transitions. Word has length 168 [2024-11-07 01:43:51,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:51,378 INFO L471 AbstractCegarLoop]: Abstraction has 1777 states and 2752 transitions. [2024-11-07 01:43:51,378 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:51,378 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2752 transitions. [2024-11-07 01:43:51,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:43:51,380 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:51,380 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:51,380 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 01:43:51,381 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:51,381 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:51,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1517526575, now seen corresponding path program 1 times [2024-11-07 01:43:51,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:51,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045205997] [2024-11-07 01:43:51,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:51,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:51,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:51,445 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:51,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:51,494 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:43:51,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:51,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:43:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:51,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:43:51,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:51,557 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:43:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:51,559 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 01:43:51,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:51,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045205997] [2024-11-07 01:43:51,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045205997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:51,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:51,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:51,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487875192] [2024-11-07 01:43:51,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:51,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:51,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:51,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:51,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:51,562 INFO L87 Difference]: Start difference. First operand 1777 states and 2752 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:53,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:53,996 INFO L93 Difference]: Finished difference Result 6043 states and 9493 transitions. [2024-11-07 01:43:53,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 01:43:53,996 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:43:53,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:54,008 INFO L225 Difference]: With dead ends: 6043 [2024-11-07 01:43:54,008 INFO L226 Difference]: Without dead ends: 4286 [2024-11-07 01:43:54,011 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-07 01:43:54,011 INFO L432 NwaCegarLoop]: 559 mSDtfsCounter, 1490 mSDsluCounter, 1936 mSDsCounter, 0 mSdLazyCounter, 3217 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 3283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3217 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:54,011 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 2495 Invalid, 3283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3217 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-07 01:43:54,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4286 states. [2024-11-07 01:43:54,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4286 to 3171. [2024-11-07 01:43:54,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 2921 states have (on average 1.5402259500171174) internal successors, (4499), 2931 states have internal predecessors, (4499), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2024-11-07 01:43:54,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 4906 transitions. [2024-11-07 01:43:54,160 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 4906 transitions. Word has length 168 [2024-11-07 01:43:54,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:54,161 INFO L471 AbstractCegarLoop]: Abstraction has 3171 states and 4906 transitions. [2024-11-07 01:43:54,161 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:54,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 4906 transitions. [2024-11-07 01:43:54,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:43:54,163 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:54,163 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:54,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 01:43:54,163 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:54,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:54,163 INFO L85 PathProgramCache]: Analyzing trace with hash 989570899, now seen corresponding path program 1 times [2024-11-07 01:43:54,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:54,163 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776031610] [2024-11-07 01:43:54,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:54,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:54,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:54,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:54,258 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:43:54,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:54,297 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:43:54,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:54,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:43:54,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:54,309 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:43:54,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:54,311 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 01:43:54,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:54,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776031610] [2024-11-07 01:43:54,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1776031610] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:54,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:54,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:54,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122164592] [2024-11-07 01:43:54,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:54,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:54,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:54,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:54,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:54,313 INFO L87 Difference]: Start difference. First operand 3171 states and 4906 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:55,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:55,653 INFO L93 Difference]: Finished difference Result 7453 states and 11707 transitions. [2024-11-07 01:43:55,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 01:43:55,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:43:55,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:55,670 INFO L225 Difference]: With dead ends: 7453 [2024-11-07 01:43:55,670 INFO L226 Difference]: Without dead ends: 4302 [2024-11-07 01:43:55,674 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-07 01:43:55,674 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 1079 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 1253 SdHoareTripleChecker+Invalid, 1708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:55,675 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 1253 Invalid, 1708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-07 01:43:55,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4302 states. [2024-11-07 01:43:55,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4302 to 3171. [2024-11-07 01:43:55,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 2921 states have (on average 1.5371448134200616) internal successors, (4490), 2931 states have internal predecessors, (4490), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2024-11-07 01:43:55,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 4897 transitions. [2024-11-07 01:43:55,855 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 4897 transitions. Word has length 168 [2024-11-07 01:43:55,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:55,855 INFO L471 AbstractCegarLoop]: Abstraction has 3171 states and 4897 transitions. [2024-11-07 01:43:55,856 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:55,856 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 4897 transitions. [2024-11-07 01:43:55,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:43:55,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:55,858 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:55,858 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-07 01:43:55,858 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:55,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:55,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1146312303, now seen corresponding path program 1 times [2024-11-07 01:43:55,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:55,860 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082453717] [2024-11-07 01:43:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:55,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:55,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:55,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:55,959 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:43:55,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:55,996 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:43:56,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:56,005 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:43:56,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:56,011 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:43:56,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:56,012 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 01:43:56,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:56,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082453717] [2024-11-07 01:43:56,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2082453717] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:56,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:56,013 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:56,013 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [274084724] [2024-11-07 01:43:56,013 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:56,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:56,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:56,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:56,014 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:56,014 INFO L87 Difference]: Start difference. First operand 3171 states and 4897 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:57,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:57,335 INFO L93 Difference]: Finished difference Result 7433 states and 11640 transitions. [2024-11-07 01:43:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 01:43:57,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:43:57,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:57,348 INFO L225 Difference]: With dead ends: 7433 [2024-11-07 01:43:57,348 INFO L226 Difference]: Without dead ends: 4282 [2024-11-07 01:43:57,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-07 01:43:57,353 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 1130 mSDsluCounter, 952 mSDsCounter, 0 mSdLazyCounter, 1531 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1149 SdHoareTripleChecker+Valid, 1252 SdHoareTripleChecker+Invalid, 1600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 1531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:57,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1149 Valid, 1252 Invalid, 1600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 1531 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-07 01:43:57,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4282 states. [2024-11-07 01:43:57,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4282 to 3171. [2024-11-07 01:43:57,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 2921 states have (on average 1.5340636768230058) internal successors, (4481), 2931 states have internal predecessors, (4481), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2024-11-07 01:43:57,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 4888 transitions. [2024-11-07 01:43:57,518 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 4888 transitions. Word has length 168 [2024-11-07 01:43:57,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:57,518 INFO L471 AbstractCegarLoop]: Abstraction has 3171 states and 4888 transitions. [2024-11-07 01:43:57,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:57,519 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 4888 transitions. [2024-11-07 01:43:57,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:43:57,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:57,520 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:57,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-07 01:43:57,520 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:57,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:57,521 INFO L85 PathProgramCache]: Analyzing trace with hash -728423601, now seen corresponding path program 1 times [2024-11-07 01:43:57,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:57,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761621142] [2024-11-07 01:43:57,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:57,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:57,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:57,586 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:57,642 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:43:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:57,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:43:57,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:57,697 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:43:57,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:57,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:43:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:57,706 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 01:43:57,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:57,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761621142] [2024-11-07 01:43:57,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761621142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:57,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:57,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:57,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678649762] [2024-11-07 01:43:57,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:57,708 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:57,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:57,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:57,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:57,708 INFO L87 Difference]: Start difference. First operand 3171 states and 4888 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:58,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:58,874 INFO L93 Difference]: Finished difference Result 7423 states and 11593 transitions. [2024-11-07 01:43:58,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 01:43:58,874 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:43:58,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:58,884 INFO L225 Difference]: With dead ends: 7423 [2024-11-07 01:43:58,884 INFO L226 Difference]: Without dead ends: 4272 [2024-11-07 01:43:58,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-07 01:43:58,889 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 1229 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 1457 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1248 SdHoareTripleChecker+Valid, 1051 SdHoareTripleChecker+Invalid, 1552 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1457 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:58,889 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1248 Valid, 1051 Invalid, 1552 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1457 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-07 01:43:58,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2024-11-07 01:43:59,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 3171. [2024-11-07 01:43:59,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 2921 states have (on average 1.53098254022595) internal successors, (4472), 2931 states have internal predecessors, (4472), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2024-11-07 01:43:59,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 4879 transitions. [2024-11-07 01:43:59,032 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 4879 transitions. Word has length 168 [2024-11-07 01:43:59,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:59,032 INFO L471 AbstractCegarLoop]: Abstraction has 3171 states and 4879 transitions. [2024-11-07 01:43:59,032 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:43:59,032 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 4879 transitions. [2024-11-07 01:43:59,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:43:59,033 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:59,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:43:59,033 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-07 01:43:59,033 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:59,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:59,033 INFO L85 PathProgramCache]: Analyzing trace with hash 670530001, now seen corresponding path program 1 times [2024-11-07 01:43:59,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:59,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410323235] [2024-11-07 01:43:59,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:59,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:59,085 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:59,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:59,133 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:43:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:59,168 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:43:59,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:59,175 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:43:59,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:59,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:43:59,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:59,180 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 01:43:59,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:59,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410323235] [2024-11-07 01:43:59,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410323235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:59,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:59,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:59,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711112322] [2024-11-07 01:43:59,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:59,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:59,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:59,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:59,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:59,181 INFO L87 Difference]: Start difference. First operand 3171 states and 4879 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:44:00,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:44:00,373 INFO L93 Difference]: Finished difference Result 7413 states and 11546 transitions. [2024-11-07 01:44:00,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 01:44:00,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:44:00,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:44:00,383 INFO L225 Difference]: With dead ends: 7413 [2024-11-07 01:44:00,383 INFO L226 Difference]: Without dead ends: 4262 [2024-11-07 01:44:00,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-07 01:44:00,389 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 1225 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1244 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 1542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-07 01:44:00,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1244 Valid, 1049 Invalid, 1542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-07 01:44:00,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4262 states. [2024-11-07 01:44:00,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4262 to 3171. [2024-11-07 01:44:00,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3171 states, 2921 states have (on average 1.5279014036288943) internal successors, (4463), 2931 states have internal predecessors, (4463), 187 states have call successors, (187), 55 states have call predecessors, (187), 62 states have return successors, (220), 192 states have call predecessors, (220), 185 states have call successors, (220) [2024-11-07 01:44:00,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 4870 transitions. [2024-11-07 01:44:00,561 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 4870 transitions. Word has length 168 [2024-11-07 01:44:00,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:44:00,561 INFO L471 AbstractCegarLoop]: Abstraction has 3171 states and 4870 transitions. [2024-11-07 01:44:00,561 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:44:00,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 4870 transitions. [2024-11-07 01:44:00,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:44:00,563 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:44:00,563 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:00,563 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-07 01:44:00,563 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:44:00,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:44:00,564 INFO L85 PathProgramCache]: Analyzing trace with hash -946910449, now seen corresponding path program 1 times [2024-11-07 01:44:00,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:44:00,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166268996] [2024-11-07 01:44:00,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:44:00,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:44:00,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:00,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:44:00,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:00,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:44:00,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:00,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:44:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:00,728 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:44:00,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:00,732 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:44:00,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:00,733 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 01:44:00,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:44:00,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166268996] [2024-11-07 01:44:00,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166268996] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:44:00,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:44:00,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:44:00,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935344907] [2024-11-07 01:44:00,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:44:00,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:44:00,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:44:00,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:44:00,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:44:00,734 INFO L87 Difference]: Start difference. First operand 3171 states and 4870 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:44:03,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:44:03,891 INFO L93 Difference]: Finished difference Result 12233 states and 18959 transitions. [2024-11-07 01:44:03,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 01:44:03,892 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:44:03,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:44:03,913 INFO L225 Difference]: With dead ends: 12233 [2024-11-07 01:44:03,913 INFO L226 Difference]: Without dead ends: 9082 [2024-11-07 01:44:03,923 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-07 01:44:03,924 INFO L432 NwaCegarLoop]: 556 mSDtfsCounter, 1565 mSDsluCounter, 1925 mSDsCounter, 0 mSdLazyCounter, 3753 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 2481 SdHoareTripleChecker+Invalid, 3821 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-07 01:44:03,924 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1582 Valid, 2481 Invalid, 3821 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3753 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-07 01:44:03,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9082 states. [2024-11-07 01:44:04,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9082 to 5905. [2024-11-07 01:44:04,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5905 states, 5447 states have (on average 1.519919221589866) internal successors, (8279), 5465 states have internal predecessors, (8279), 339 states have call successors, (339), 103 states have call predecessors, (339), 118 states have return successors, (434), 352 states have call predecessors, (434), 337 states have call successors, (434) [2024-11-07 01:44:04,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5905 states to 5905 states and 9052 transitions. [2024-11-07 01:44:04,263 INFO L78 Accepts]: Start accepts. Automaton has 5905 states and 9052 transitions. Word has length 168 [2024-11-07 01:44:04,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:44:04,263 INFO L471 AbstractCegarLoop]: Abstraction has 5905 states and 9052 transitions. [2024-11-07 01:44:04,263 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:44:04,263 INFO L276 IsEmpty]: Start isEmpty. Operand 5905 states and 9052 transitions. [2024-11-07 01:44:04,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:44:04,265 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:44:04,266 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:04,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-07 01:44:04,266 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:44:04,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:44:04,266 INFO L85 PathProgramCache]: Analyzing trace with hash -583443951, now seen corresponding path program 1 times [2024-11-07 01:44:04,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:44:04,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339073986] [2024-11-07 01:44:04,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:44:04,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:44:04,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:04,307 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:44:04,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:04,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:44:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:04,408 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:44:04,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:04,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:44:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:04,418 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:44:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:04,419 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 01:44:04,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:44:04,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339073986] [2024-11-07 01:44:04,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339073986] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:44:04,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:44:04,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:44:04,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098373960] [2024-11-07 01:44:04,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:44:04,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:44:04,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:44:04,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:44:04,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:44:04,421 INFO L87 Difference]: Start difference. First operand 5905 states and 9052 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:44:07,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:44:07,691 INFO L93 Difference]: Finished difference Result 22989 states and 35587 transitions. [2024-11-07 01:44:07,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 01:44:07,691 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:44:07,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:44:07,728 INFO L225 Difference]: With dead ends: 22989 [2024-11-07 01:44:07,728 INFO L226 Difference]: Without dead ends: 17104 [2024-11-07 01:44:07,742 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-07 01:44:07,743 INFO L432 NwaCegarLoop]: 557 mSDtfsCounter, 1831 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 3065 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1861 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 3134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-07 01:44:07,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1861 Valid, 2485 Invalid, 3134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3065 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-07 01:44:07,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17104 states. [2024-11-07 01:44:08,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17104 to 11434. [2024-11-07 01:44:08,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11434 states, 10568 states have (on average 1.5178841786525359) internal successors, (16041), 10602 states have internal predecessors, (16041), 635 states have call successors, (635), 199 states have call predecessors, (635), 230 states have return successors, (908), 664 states have call predecessors, (908), 633 states have call successors, (908) [2024-11-07 01:44:08,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11434 states to 11434 states and 17584 transitions. [2024-11-07 01:44:08,461 INFO L78 Accepts]: Start accepts. Automaton has 11434 states and 17584 transitions. Word has length 168 [2024-11-07 01:44:08,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:44:08,461 INFO L471 AbstractCegarLoop]: Abstraction has 11434 states and 17584 transitions. [2024-11-07 01:44:08,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:44:08,461 INFO L276 IsEmpty]: Start isEmpty. Operand 11434 states and 17584 transitions. [2024-11-07 01:44:08,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:44:08,465 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:44:08,465 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:08,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-07 01:44:08,465 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:44:08,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:44:08,466 INFO L85 PathProgramCache]: Analyzing trace with hash -294624561, now seen corresponding path program 1 times [2024-11-07 01:44:08,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:44:08,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223929062] [2024-11-07 01:44:08,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:44:08,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:44:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:08,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:44:08,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:08,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:44:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:08,601 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:44:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:08,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:44:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:08,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:44:08,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:08,619 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 01:44:08,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:44:08,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223929062] [2024-11-07 01:44:08,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223929062] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:44:08,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:44:08,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:44:08,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971766451] [2024-11-07 01:44:08,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:44:08,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:44:08,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:44:08,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:44:08,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:44:08,620 INFO L87 Difference]: Start difference. First operand 11434 states and 17584 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:44:13,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:44:13,077 INFO L93 Difference]: Finished difference Result 44420 states and 68985 transitions. [2024-11-07 01:44:13,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 01:44:13,077 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:44:13,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:44:13,140 INFO L225 Difference]: With dead ends: 44420 [2024-11-07 01:44:13,140 INFO L226 Difference]: Without dead ends: 33006 [2024-11-07 01:44:13,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-07 01:44:13,160 INFO L432 NwaCegarLoop]: 557 mSDtfsCounter, 1544 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 3626 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1561 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 3694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 3626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-07 01:44:13,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1561 Valid, 2485 Invalid, 3694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 3626 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-07 01:44:13,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33006 states. [2024-11-07 01:44:14,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33006 to 22475. [2024-11-07 01:44:14,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22475 states, 20809 states have (on average 1.5175645153539334) internal successors, (31579), 20875 states have internal predecessors, (31579), 1211 states have call successors, (1211), 391 states have call predecessors, (1211), 454 states have return successors, (2002), 1272 states have call predecessors, (2002), 1209 states have call successors, (2002) [2024-11-07 01:44:14,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22475 states to 22475 states and 34792 transitions. [2024-11-07 01:44:14,702 INFO L78 Accepts]: Start accepts. Automaton has 22475 states and 34792 transitions. Word has length 168 [2024-11-07 01:44:14,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:44:14,703 INFO L471 AbstractCegarLoop]: Abstraction has 22475 states and 34792 transitions. [2024-11-07 01:44:14,703 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:44:14,703 INFO L276 IsEmpty]: Start isEmpty. Operand 22475 states and 34792 transitions. [2024-11-07 01:44:14,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:44:14,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:44:14,716 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:14,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-07 01:44:14,716 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:44:14,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:44:14,716 INFO L85 PathProgramCache]: Analyzing trace with hash -839497135, now seen corresponding path program 1 times [2024-11-07 01:44:14,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:44:14,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277259910] [2024-11-07 01:44:14,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:44:14,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:44:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:14,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:44:14,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:14,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:44:14,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:14,912 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:44:14,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:14,924 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:44:14,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:14,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:44:14,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:14,932 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 01:44:14,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:44:14,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277259910] [2024-11-07 01:44:14,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277259910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:44:14,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:44:14,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:44:14,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639577320] [2024-11-07 01:44:14,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:44:14,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:44:14,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:44:14,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:44:14,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:44:14,933 INFO L87 Difference]: Start difference. First operand 22475 states and 34792 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:44:21,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:44:21,021 INFO L93 Difference]: Finished difference Result 86691 states and 135487 transitions. [2024-11-07 01:44:21,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 01:44:21,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:44:21,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:44:21,215 INFO L225 Difference]: With dead ends: 86691 [2024-11-07 01:44:21,215 INFO L226 Difference]: Without dead ends: 64236 [2024-11-07 01:44:21,282 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-07 01:44:21,282 INFO L432 NwaCegarLoop]: 557 mSDtfsCounter, 1757 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 3034 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1787 SdHoareTripleChecker+Valid, 2485 SdHoareTripleChecker+Invalid, 3103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 3034 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-07 01:44:21,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1787 Valid, 2485 Invalid, 3103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 3034 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-07 01:44:21,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64236 states. [2024-11-07 01:44:24,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64236 to 44524. [2024-11-07 01:44:24,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44524 states, 41290 states have (on average 1.518164204407847) internal successors, (62685), 41420 states have internal predecessors, (62685), 2331 states have call successors, (2331), 775 states have call predecessors, (2331), 902 states have return successors, (4644), 2456 states have call predecessors, (4644), 2329 states have call successors, (4644) [2024-11-07 01:44:24,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44524 states to 44524 states and 69660 transitions. [2024-11-07 01:44:24,341 INFO L78 Accepts]: Start accepts. Automaton has 44524 states and 69660 transitions. Word has length 168 [2024-11-07 01:44:24,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:44:24,341 INFO L471 AbstractCegarLoop]: Abstraction has 44524 states and 69660 transitions. [2024-11-07 01:44:24,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:44:24,341 INFO L276 IsEmpty]: Start isEmpty. Operand 44524 states and 69660 transitions. [2024-11-07 01:44:24,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:44:24,356 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:44:24,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:24,356 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-07 01:44:24,356 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:44:24,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:44:24,357 INFO L85 PathProgramCache]: Analyzing trace with hash -164337009, now seen corresponding path program 1 times [2024-11-07 01:44:24,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:44:24,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1481889388] [2024-11-07 01:44:24,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:44:24,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:44:24,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:24,400 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:44:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:24,449 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:44:24,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:24,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:44:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:24,499 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:44:24,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:24,502 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:44:24,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:24,503 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 01:44:24,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:44:24,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1481889388] [2024-11-07 01:44:24,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1481889388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:44:24,503 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:44:24,503 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:44:24,503 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793865418] [2024-11-07 01:44:24,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:44:24,504 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:44:24,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:44:24,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:44:24,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:44:24,505 INFO L87 Difference]: Start difference. First operand 44524 states and 69660 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:44:34,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:44:34,010 INFO L93 Difference]: Finished difference Result 168128 states and 265729 transitions. [2024-11-07 01:44:34,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 01:44:34,010 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 168 [2024-11-07 01:44:34,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:44:34,416 INFO L225 Difference]: With dead ends: 168128 [2024-11-07 01:44:34,416 INFO L226 Difference]: Without dead ends: 123624 [2024-11-07 01:44:34,540 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-07 01:44:34,541 INFO L432 NwaCegarLoop]: 316 mSDtfsCounter, 1583 mSDsluCounter, 1241 mSDsCounter, 0 mSdLazyCounter, 3023 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1600 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 3135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 3023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-07 01:44:34,541 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1600 Valid, 1557 Invalid, 3135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 3023 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-07 01:44:34,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123624 states. [2024-11-07 01:44:40,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123624 to 88686. [2024-11-07 01:44:40,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88686 states, 82380 states have (on average 1.5199927166788056) internal successors, (125217), 82638 states have internal predecessors, (125217), 4507 states have call successors, (4507), 1543 states have call predecessors, (4507), 1798 states have return successors, (11322), 4760 states have call predecessors, (11322), 4505 states have call successors, (11322) [2024-11-07 01:44:40,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88686 states to 88686 states and 141046 transitions. [2024-11-07 01:44:40,506 INFO L78 Accepts]: Start accepts. Automaton has 88686 states and 141046 transitions. Word has length 168 [2024-11-07 01:44:40,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:44:40,507 INFO L471 AbstractCegarLoop]: Abstraction has 88686 states and 141046 transitions. [2024-11-07 01:44:40,507 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-07 01:44:40,507 INFO L276 IsEmpty]: Start isEmpty. Operand 88686 states and 141046 transitions. [2024-11-07 01:44:40,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-07 01:44:40,543 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:44:40,543 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:44:40,543 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-07 01:44:40,543 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:44:40,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:44:40,544 INFO L85 PathProgramCache]: Analyzing trace with hash -749108659, now seen corresponding path program 1 times [2024-11-07 01:44:40,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:44:40,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798939612] [2024-11-07 01:44:40,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:44:40,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:44:40,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:40,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:44:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:40,654 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2024-11-07 01:44:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:40,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:44:40,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:40,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-07 01:44:40,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:40,715 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2024-11-07 01:44:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:44:40,716 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 01:44:40,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:44:40,717 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798939612] [2024-11-07 01:44:40,717 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798939612] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:44:40,717 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:44:40,717 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:44:40,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789960676] [2024-11-07 01:44:40,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:44:40,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:44:40,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:44:40,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:44:40,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:44:40,719 INFO L87 Difference]: Start difference. First operand 88686 states and 141046 transitions. Second operand has 7 states, 7 states have (on average 22.428571428571427) internal successors, (157), 5 states have internal predecessors, (157), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)