./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.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.07.cil-2.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', 'a0cf3566e24b445695278143ce06a9bd6b4348c9de696d02fe86c47eb1775574'] 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.07.cil-2.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 a0cf3566e24b445695278143ce06a9bd6b4348c9de696d02fe86c47eb1775574 --- Real Ultimate output --- This is Ultimate 0.3.0-?-4f9af40 [2024-11-07 01:42:36,449 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-07 01:42:36,544 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-07 01:42:36,550 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-07 01:42:36,551 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-07 01:42:36,581 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-07 01:42:36,582 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-07 01:42:36,582 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-07 01:42:36,582 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-07 01:42:36,582 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-07 01:42:36,582 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-07 01:42:36,582 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-07 01:42:36,583 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-07 01:42:36,583 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-07 01:42:36,583 INFO L153 SettingsManager]: * Use SBE=true [2024-11-07 01:42:36,583 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-07 01:42:36,583 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-07 01:42:36,583 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-07 01:42:36,585 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-07 01:42:36,585 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-07 01:42:36,585 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-07 01:42:36,585 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-07 01:42:36,586 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-07 01:42:36,586 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-07 01:42:36,587 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-07 01:42:36,587 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-07 01:42:36,587 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-07 01:42:36,587 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-07 01:42:36,587 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-07 01:42:36,588 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-07 01:42:36,588 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-07 01:42:36,588 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-07 01:42:36,588 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 01:42:36,588 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-07 01:42:36,588 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-07 01:42:36,588 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-07 01:42:36,589 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-07 01:42:36,589 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-07 01:42:36,589 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-07 01:42:36,589 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-07 01:42:36,589 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-07 01:42:36,589 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-07 01:42:36,590 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 -> a0cf3566e24b445695278143ce06a9bd6b4348c9de696d02fe86c47eb1775574 [2024-11-07 01:42:36,918 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-07 01:42:36,926 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-07 01:42:36,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-07 01:42:36,931 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-07 01:42:36,931 INFO L274 PluginConnector]: CDTParser initialized [2024-11-07 01:42:36,932 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c [2024-11-07 01:42:38,312 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-07 01:42:38,559 INFO L384 CDTParser]: Found 1 translation units. [2024-11-07 01:42:38,560 INFO L180 CDTParser]: Scanning /storage/repos/ultimate-jdk21/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_1.cil-2+token_ring.07.cil-2.c [2024-11-07 01:42:38,572 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/766a33668/cbd88a63bf724ef6b45689e02a162349/FLAG76aab4a91 [2024-11-07 01:42:38,586 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/data/766a33668/cbd88a63bf724ef6b45689e02a162349 [2024-11-07 01:42:38,589 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-07 01:42:38,591 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-07 01:42:38,592 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-07 01:42:38,592 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-07 01:42:38,596 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-07 01:42:38,597 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:42:38" (1/1) ... [2024-11-07 01:42:38,598 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17c209e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:38, skipping insertion in model container [2024-11-07 01:42:38,598 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:42:38" (1/1) ... [2024-11-07 01:42:38,634 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-07 01:42:38,746 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.07.cil-2.c[913,926] [2024-11-07 01:42:38,787 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.07.cil-2.c[5977,5990] [2024-11-07 01:42:38,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 01:42:38,866 INFO L200 MainTranslator]: Completed pre-run [2024-11-07 01:42:38,875 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.07.cil-2.c[913,926] [2024-11-07 01:42:38,889 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.07.cil-2.c[5977,5990] [2024-11-07 01:42:38,927 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-07 01:42:38,952 INFO L204 MainTranslator]: Completed translation [2024-11-07 01:42:38,953 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:38 WrapperNode [2024-11-07 01:42:38,953 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-07 01:42:38,954 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-07 01:42:38,954 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-07 01:42:38,954 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-07 01:42:38,959 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:38" (1/1) ... [2024-11-07 01:42:38,969 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:38" (1/1) ... [2024-11-07 01:42:39,023 INFO L138 Inliner]: procedures = 62, calls = 70, calls flagged for inlining = 36, calls inlined = 36, statements flattened = 789 [2024-11-07 01:42:39,023 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-07 01:42:39,024 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-07 01:42:39,024 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-07 01:42:39,024 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-07 01:42:39,040 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:38" (1/1) ... [2024-11-07 01:42:39,040 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:38" (1/1) ... [2024-11-07 01:42:39,044 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:38" (1/1) ... [2024-11-07 01:42:39,067 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 01:42:39,068 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:38" (1/1) ... [2024-11-07 01:42:39,068 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:38" (1/1) ... [2024-11-07 01:42:39,077 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:38" (1/1) ... [2024-11-07 01:42:39,092 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:38" (1/1) ... [2024-11-07 01:42:39,094 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:38" (1/1) ... [2024-11-07 01:42:39,096 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:38" (1/1) ... [2024-11-07 01:42:39,099 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-07 01:42:39,100 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-07 01:42:39,101 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-07 01:42:39,101 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-07 01:42:39,102 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:38" (1/1) ... [2024-11-07 01:42:39,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-07 01:42:39,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 01:42:39,150 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 01:42:39,152 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 01:42:39,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-07 01:42:39,170 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-07 01:42:39,170 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-07 01:42:39,170 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify_threads [2024-11-07 01:42:39,170 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify_threads [2024-11-07 01:42:39,170 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-07 01:42:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-07 01:42:39,171 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-07 01:42:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-07 01:42:39,171 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-07 01:42:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-07 01:42:39,171 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-07 01:42:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-07 01:42:39,171 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-07 01:42:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-07 01:42:39,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-07 01:42:39,171 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-07 01:42:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-07 01:42:39,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-07 01:42:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-07 01:42:39,171 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-07 01:42:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-07 01:42:39,171 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-07 01:42:39,171 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-07 01:42:39,275 INFO L238 CfgBuilder]: Building ICFG [2024-11-07 01:42:39,277 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-07 01:42:40,044 INFO L? ?]: Removed 101 outVars from TransFormulas that were not future-live. [2024-11-07 01:42:40,044 INFO L287 CfgBuilder]: Performing block encoding [2024-11-07 01:42:40,068 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-07 01:42:40,068 INFO L316 CfgBuilder]: Removed 14 assume(true) statements. [2024-11-07 01:42:40,069 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:42:40 BoogieIcfgContainer [2024-11-07 01:42:40,069 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-07 01:42:40,073 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-07 01:42:40,073 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-07 01:42:40,078 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-07 01:42:40,079 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:42:38" (1/3) ... [2024-11-07 01:42:40,079 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607d89fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:42:40, skipping insertion in model container [2024-11-07 01:42:40,080 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:42:38" (2/3) ... [2024-11-07 01:42:40,081 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@607d89fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:42:40, skipping insertion in model container [2024-11-07 01:42:40,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:42:40" (3/3) ... [2024-11-07 01:42:40,082 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_1.cil-2+token_ring.07.cil-2.c [2024-11-07 01:42:40,097 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-07 01:42:40,097 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-07 01:42:40,170 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-07 01:42:40,184 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;@37a3a822, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-07 01:42:40,184 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-07 01:42:40,190 INFO L276 IsEmpty]: Start isEmpty. Operand has 345 states, 303 states have (on average 1.613861386138614) internal successors, (489), 310 states have internal predecessors, (489), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-07 01:42:40,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-07 01:42:40,201 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:40,201 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 01:42:40,202 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:40,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:40,207 INFO L85 PathProgramCache]: Analyzing trace with hash 269349357, now seen corresponding path program 1 times [2024-11-07 01:42:40,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:40,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587451152] [2024-11-07 01:42:40,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:40,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:40,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:40,516 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:42:40,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:40,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-07 01:42:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:40,583 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 01:42:40,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:40,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587451152] [2024-11-07 01:42:40,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587451152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:42:40,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:42:40,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 01:42:40,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241596747] [2024-11-07 01:42:40,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:40,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 01:42:40,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:40,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 01:42:40,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 01:42:40,621 INFO L87 Difference]: Start difference. First operand has 345 states, 303 states have (on average 1.613861386138614) internal successors, (489), 310 states have internal predecessors, (489), 29 states have call successors, (29), 10 states have call predecessors, (29), 10 states have return successors, (29), 27 states have call predecessors, (29), 29 states have call successors, (29) 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 01:42:41,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:41,224 INFO L93 Difference]: Finished difference Result 739 states and 1172 transitions. [2024-11-07 01:42:41,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 01:42:41,227 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 01:42:41,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:41,242 INFO L225 Difference]: With dead ends: 739 [2024-11-07 01:42:41,242 INFO L226 Difference]: Without dead ends: 404 [2024-11-07 01:42:41,248 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 01:42:41,252 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 664 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 01:42:41,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 690 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 01:42:41,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2024-11-07 01:42:41,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 398. [2024-11-07 01:42:41,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 352 states have (on average 1.4943181818181819) internal successors, (526), 357 states have internal predecessors, (526), 33 states have call successors, (33), 12 states have call predecessors, (33), 11 states have return successors, (35), 29 states have call predecessors, (35), 29 states have call successors, (35) [2024-11-07 01:42:41,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 594 transitions. [2024-11-07 01:42:41,332 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 594 transitions. Word has length 44 [2024-11-07 01:42:41,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:41,333 INFO L471 AbstractCegarLoop]: Abstraction has 398 states and 594 transitions. [2024-11-07 01:42:41,333 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 01:42:41,333 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 594 transitions. [2024-11-07 01:42:41,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-07 01:42:41,336 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:41,336 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 01:42:41,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-07 01:42:41,337 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:41,337 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:41,337 INFO L85 PathProgramCache]: Analyzing trace with hash -461325641, now seen corresponding path program 1 times [2024-11-07 01:42:41,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:41,338 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501556691] [2024-11-07 01:42:41,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:41,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:41,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:41,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:42:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:41,464 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-07 01:42:41,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:41,476 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 01:42:41,477 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:41,477 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501556691] [2024-11-07 01:42:41,477 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501556691] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:42:41,477 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:42:41,477 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 01:42:41,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743702409] [2024-11-07 01:42:41,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:41,479 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 01:42:41,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:41,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 01:42:41,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 01:42:41,480 INFO L87 Difference]: Start difference. First operand 398 states and 594 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 01:42:41,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:41,993 INFO L93 Difference]: Finished difference Result 646 states and 934 transitions. [2024-11-07 01:42:41,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 01:42:41,994 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 01:42:41,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:41,998 INFO L225 Difference]: With dead ends: 646 [2024-11-07 01:42:41,998 INFO L226 Difference]: Without dead ends: 522 [2024-11-07 01:42:41,999 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 01:42:42,000 INFO L432 NwaCegarLoop]: 354 mSDtfsCounter, 280 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-07 01:42:42,000 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 899 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-07 01:42:42,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2024-11-07 01:42:42,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 465. [2024-11-07 01:42:42,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465 states, 413 states have (on average 1.476997578692494) internal successors, (610), 418 states have internal predecessors, (610), 36 states have call successors, (36), 15 states have call predecessors, (36), 14 states have return successors, (38), 32 states have call predecessors, (38), 32 states have call successors, (38) [2024-11-07 01:42:42,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465 states to 465 states and 684 transitions. [2024-11-07 01:42:42,038 INFO L78 Accepts]: Start accepts. Automaton has 465 states and 684 transitions. Word has length 45 [2024-11-07 01:42:42,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:42,038 INFO L471 AbstractCegarLoop]: Abstraction has 465 states and 684 transitions. [2024-11-07 01:42:42,038 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 01:42:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 465 states and 684 transitions. [2024-11-07 01:42:42,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-07 01:42:42,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:42,040 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 01:42:42,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-07 01:42:42,040 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:42,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:42,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1745683102, now seen corresponding path program 1 times [2024-11-07 01:42:42,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:42,041 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693079639] [2024-11-07 01:42:42,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:42,041 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:42,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:42,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:42:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:42,124 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-07 01:42:42,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:42,135 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 01:42:42,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:42,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693079639] [2024-11-07 01:42:42,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693079639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:42:42,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:42:42,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 01:42:42,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134481072] [2024-11-07 01:42:42,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:42,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 01:42:42,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:42,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 01:42:42,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 01:42:42,140 INFO L87 Difference]: Start difference. First operand 465 states and 684 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 01:42:42,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:42,541 INFO L93 Difference]: Finished difference Result 873 states and 1243 transitions. [2024-11-07 01:42:42,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 01:42:42,542 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 01:42:42,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:42,549 INFO L225 Difference]: With dead ends: 873 [2024-11-07 01:42:42,552 INFO L226 Difference]: Without dead ends: 682 [2024-11-07 01:42:42,554 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 01:42:42,554 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 681 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 702 SdHoareTripleChecker+Valid, 662 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 01:42:42,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [702 Valid, 662 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 01:42:42,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2024-11-07 01:42:42,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 630. [2024-11-07 01:42:42,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 559 states have (on average 1.4311270125223614) internal successors, (800), 567 states have internal predecessors, (800), 47 states have call successors, (47), 22 states have call predecessors, (47), 22 states have return successors, (55), 41 states have call predecessors, (55), 43 states have call successors, (55) [2024-11-07 01:42:42,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 902 transitions. [2024-11-07 01:42:42,604 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 902 transitions. Word has length 45 [2024-11-07 01:42:42,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:42,604 INFO L471 AbstractCegarLoop]: Abstraction has 630 states and 902 transitions. [2024-11-07 01:42:42,605 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 01:42:42,605 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 902 transitions. [2024-11-07 01:42:42,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-07 01:42:42,608 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:42,608 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 01:42:42,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-07 01:42:42,608 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:42,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:42,609 INFO L85 PathProgramCache]: Analyzing trace with hash 201479069, now seen corresponding path program 1 times [2024-11-07 01:42:42,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:42,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502605186] [2024-11-07 01:42:42,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:42,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:42,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:42:42,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:42,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-07 01:42:42,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:42,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-07 01:42:42,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:42,777 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 01:42:42,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:42,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502605186] [2024-11-07 01:42:42,777 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502605186] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:42:42,777 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:42:42,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 01:42:42,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387647945] [2024-11-07 01:42:42,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:42,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 01:42:42,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:42,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 01:42:42,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 01:42:42,782 INFO L87 Difference]: Start difference. First operand 630 states and 902 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 01:42:43,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:43,243 INFO L93 Difference]: Finished difference Result 1214 states and 1687 transitions. [2024-11-07 01:42:43,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 01:42:43,244 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 01:42:43,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:43,250 INFO L225 Difference]: With dead ends: 1214 [2024-11-07 01:42:43,250 INFO L226 Difference]: Without dead ends: 858 [2024-11-07 01:42:43,251 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 01:42:43,252 INFO L432 NwaCegarLoop]: 376 mSDtfsCounter, 264 mSDsluCounter, 575 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 951 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-07 01:42:43,252 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 951 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-07 01:42:43,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 858 states. [2024-11-07 01:42:43,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 858 to 820. [2024-11-07 01:42:43,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 820 states, 725 states have (on average 1.3793103448275863) internal successors, (1000), 735 states have internal predecessors, (1000), 61 states have call successors, (61), 30 states have call predecessors, (61), 32 states have return successors, (79), 55 states have call predecessors, (79), 57 states have call successors, (79) [2024-11-07 01:42:43,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 820 states to 820 states and 1140 transitions. [2024-11-07 01:42:43,301 INFO L78 Accepts]: Start accepts. Automaton has 820 states and 1140 transitions. Word has length 62 [2024-11-07 01:42:43,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:43,302 INFO L471 AbstractCegarLoop]: Abstraction has 820 states and 1140 transitions. [2024-11-07 01:42:43,302 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 01:42:43,302 INFO L276 IsEmpty]: Start isEmpty. Operand 820 states and 1140 transitions. [2024-11-07 01:42:43,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-07 01:42:43,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:43,305 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 01:42:43,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-07 01:42:43,305 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:43,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:43,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1220888774, now seen corresponding path program 1 times [2024-11-07 01:42:43,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:43,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065381922] [2024-11-07 01:42:43,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:43,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:43,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:42:43,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:43,395 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2024-11-07 01:42:43,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:43,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2024-11-07 01:42:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:43,407 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 01:42:43,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:43,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065381922] [2024-11-07 01:42:43,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065381922] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:42:43,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:42:43,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 01:42:43,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291622326] [2024-11-07 01:42:43,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:43,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 01:42:43,408 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:43,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 01:42:43,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 01:42:43,409 INFO L87 Difference]: Start difference. First operand 820 states and 1140 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 01:42:43,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:43,772 INFO L93 Difference]: Finished difference Result 1473 states and 1993 transitions. [2024-11-07 01:42:43,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 01:42:43,773 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 01:42:43,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:43,784 INFO L225 Difference]: With dead ends: 1473 [2024-11-07 01:42:43,784 INFO L226 Difference]: Without dead ends: 1019 [2024-11-07 01:42:43,786 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 01:42:43,787 INFO L432 NwaCegarLoop]: 332 mSDtfsCounter, 671 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 692 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 01:42:43,788 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [692 Valid, 658 Invalid, 276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 01:42:43,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2024-11-07 01:42:43,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 964. [2024-11-07 01:42:43,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 964 states, 853 states have (on average 1.3493552168815943) internal successors, (1151), 865 states have internal predecessors, (1151), 69 states have call successors, (69), 36 states have call predecessors, (69), 40 states have return successors, (93), 63 states have call predecessors, (93), 65 states have call successors, (93) [2024-11-07 01:42:43,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 964 states to 964 states and 1313 transitions. [2024-11-07 01:42:43,852 INFO L78 Accepts]: Start accepts. Automaton has 964 states and 1313 transitions. Word has length 67 [2024-11-07 01:42:43,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:43,852 INFO L471 AbstractCegarLoop]: Abstraction has 964 states and 1313 transitions. [2024-11-07 01:42:43,852 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 01:42:43,853 INFO L276 IsEmpty]: Start isEmpty. Operand 964 states and 1313 transitions. [2024-11-07 01:42:43,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-07 01:42:43,855 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:43,855 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 01:42:43,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-07 01:42:43,856 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:43,856 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:43,856 INFO L85 PathProgramCache]: Analyzing trace with hash 890321295, now seen corresponding path program 1 times [2024-11-07 01:42:43,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:43,856 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947464931] [2024-11-07 01:42:43,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:43,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:43,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:43,957 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:42:43,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:43,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 01:42:43,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:44,024 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 01:42:44,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:44,033 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-07 01:42:44,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:44,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947464931] [2024-11-07 01:42:44,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947464931] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 01:42:44,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713206245] [2024-11-07 01:42:44,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:44,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 01:42:44,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 01:42:44,040 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 01:42:44,041 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 01:42:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:44,151 INFO L255 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-07 01:42:44,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 01:42:44,214 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 01:42:44,215 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 01:42:44,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713206245] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:42:44,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 01:42:44,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-07 01:42:44,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945791230] [2024-11-07 01:42:44,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:44,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 01:42:44,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:44,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 01:42:44,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:42:44,220 INFO L87 Difference]: Start difference. First operand 964 states and 1313 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 01:42:44,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:44,274 INFO L93 Difference]: Finished difference Result 1507 states and 2036 transitions. [2024-11-07 01:42:44,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 01:42:44,275 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 01:42:44,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:44,280 INFO L225 Difference]: With dead ends: 1507 [2024-11-07 01:42:44,280 INFO L226 Difference]: Without dead ends: 962 [2024-11-07 01:42:44,284 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 01:42:44,285 INFO L432 NwaCegarLoop]: 552 mSDtfsCounter, 72 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 1027 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 01:42:44,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 1027 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 01:42:44,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 962 states. [2024-11-07 01:42:44,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 962 to 918. [2024-11-07 01:42:44,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 813 states have (on average 1.3357933579335792) internal successors, (1086), 825 states have internal predecessors, (1086), 65 states have call successors, (65), 34 states have call predecessors, (65), 38 states have return successors, (87), 59 states have call predecessors, (87), 61 states have call successors, (87) [2024-11-07 01:42:44,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1238 transitions. [2024-11-07 01:42:44,343 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1238 transitions. Word has length 68 [2024-11-07 01:42:44,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:44,343 INFO L471 AbstractCegarLoop]: Abstraction has 918 states and 1238 transitions. [2024-11-07 01:42:44,345 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 01:42:44,345 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1238 transitions. [2024-11-07 01:42:44,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-07 01:42:44,347 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:44,347 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 01:42:44,364 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 01:42:44,547 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 01:42:44,547 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:44,548 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:44,548 INFO L85 PathProgramCache]: Analyzing trace with hash -1224674226, now seen corresponding path program 1 times [2024-11-07 01:42:44,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:44,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403271091] [2024-11-07 01:42:44,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:44,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:44,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:44,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:42:44,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:44,644 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 01:42:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:44,682 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 01:42:44,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 01:42:44,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:44,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403271091] [2024-11-07 01:42:44,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403271091] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 01:42:44,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [19727021] [2024-11-07 01:42:44,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:44,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 01:42:44,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 01:42:44,699 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 01:42:44,701 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 01:42:44,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:44,818 INFO L255 TraceCheckSpWp]: Trace formula consists of 323 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-07 01:42:44,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 01:42:44,881 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-07 01:42:44,884 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 01:42:44,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [19727021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:42:44,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 01:42:44,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-11-07 01:42:44,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067960796] [2024-11-07 01:42:44,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:44,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 01:42:44,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:44,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 01:42:44,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-07 01:42:44,887 INFO L87 Difference]: Start difference. First operand 918 states and 1238 transitions. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 01:42:44,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:44,960 INFO L93 Difference]: Finished difference Result 1344 states and 1799 transitions. [2024-11-07 01:42:44,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 01:42:44,961 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 68 [2024-11-07 01:42:44,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:44,966 INFO L225 Difference]: With dead ends: 1344 [2024-11-07 01:42:44,967 INFO L226 Difference]: Without dead ends: 942 [2024-11-07 01:42:44,971 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-07 01:42:44,971 INFO L432 NwaCegarLoop]: 502 mSDtfsCounter, 0 mSDsluCounter, 1494 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 01:42:44,972 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1996 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 01:42:44,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-11-07 01:42:45,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 942. [2024-11-07 01:42:45,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 942 states, 837 states have (on average 1.3261648745519714) internal successors, (1110), 849 states have internal predecessors, (1110), 65 states have call successors, (65), 34 states have call predecessors, (65), 38 states have return successors, (87), 59 states have call predecessors, (87), 61 states have call successors, (87) [2024-11-07 01:42:45,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 942 states to 942 states and 1262 transitions. [2024-11-07 01:42:45,020 INFO L78 Accepts]: Start accepts. Automaton has 942 states and 1262 transitions. Word has length 68 [2024-11-07 01:42:45,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:45,020 INFO L471 AbstractCegarLoop]: Abstraction has 942 states and 1262 transitions. [2024-11-07 01:42:45,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-07 01:42:45,020 INFO L276 IsEmpty]: Start isEmpty. Operand 942 states and 1262 transitions. [2024-11-07 01:42:45,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-07 01:42:45,023 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:45,023 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 01:42:45,041 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 01:42:45,223 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 01:42:45,223 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:45,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:45,224 INFO L85 PathProgramCache]: Analyzing trace with hash -637868212, now seen corresponding path program 1 times [2024-11-07 01:42:45,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:45,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1685226130] [2024-11-07 01:42:45,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:45,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:45,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:45,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:42:45,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:45,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 01:42:45,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:45,372 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 01:42:45,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:45,378 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 01:42:45,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:45,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1685226130] [2024-11-07 01:42:45,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1685226130] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 01:42:45,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399017511] [2024-11-07 01:42:45,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:45,381 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 01:42:45,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 01:42:45,384 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 01:42:45,387 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 01:42:45,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:45,508 INFO L255 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-07 01:42:45,510 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 01:42:45,615 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 01:42:45,615 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 01:42:45,671 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 01:42:45,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399017511] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-07 01:42:45,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-07 01:42:45,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2024-11-07 01:42:45,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570372578] [2024-11-07 01:42:45,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:45,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 01:42:45,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:45,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 01:42:45,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-07 01:42:45,674 INFO L87 Difference]: Start difference. First operand 942 states and 1262 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 01:42:45,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:45,837 INFO L93 Difference]: Finished difference Result 994 states and 1324 transitions. [2024-11-07 01:42:45,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-07 01:42:45,838 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 01:42:45,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:45,844 INFO L225 Difference]: With dead ends: 994 [2024-11-07 01:42:45,845 INFO L226 Difference]: Without dead ends: 991 [2024-11-07 01:42:45,845 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 01:42:45,846 INFO L432 NwaCegarLoop]: 524 mSDtfsCounter, 901 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-07 01:42:45,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 589 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-07 01:42:45,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2024-11-07 01:42:45,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 941. [2024-11-07 01:42:45,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 837 states have (on average 1.3237753882915173) internal successors, (1108), 848 states have internal predecessors, (1108), 64 states have call successors, (64), 34 states have call predecessors, (64), 38 states have return successors, (87), 59 states have call predecessors, (87), 61 states have call successors, (87) [2024-11-07 01:42:45,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1259 transitions. [2024-11-07 01:42:45,903 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1259 transitions. Word has length 68 [2024-11-07 01:42:45,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:45,904 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1259 transitions. [2024-11-07 01:42:45,905 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 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 01:42:45,905 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1259 transitions. [2024-11-07 01:42:45,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-07 01:42:45,907 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:45,908 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-07 01:42:45,925 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 01:42:46,111 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 01:42:46,112 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:46,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:46,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1699860191, now seen corresponding path program 1 times [2024-11-07 01:42:46,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:46,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512992832] [2024-11-07 01:42:46,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:46,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:46,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:46,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:42:46,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:46,164 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 01:42:46,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:46,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2024-11-07 01:42:46,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:46,200 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-07 01:42:46,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:46,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512992832] [2024-11-07 01:42:46,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512992832] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 01:42:46,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1155824229] [2024-11-07 01:42:46,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:46,200 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 01:42:46,201 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 01:42:46,203 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 01:42:46,206 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 01:42:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:46,319 INFO L255 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-07 01:42:46,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 01:42:46,612 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 01:42:46,612 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-07 01:42:46,688 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 01:42:46,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1155824229] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-07 01:42:46,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-07 01:42:46,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 11 [2024-11-07 01:42:46,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103357222] [2024-11-07 01:42:46,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-07 01:42:46,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-07 01:42:46,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:46,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-07 01:42:46,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-07 01:42:46,691 INFO L87 Difference]: Start difference. First operand 941 states and 1259 transitions. Second operand has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 10 states have internal predecessors, (146), 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 01:42:48,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:48,048 INFO L93 Difference]: Finished difference Result 2270 states and 2958 transitions. [2024-11-07 01:42:48,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-07 01:42:48,049 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 10 states have internal predecessors, (146), 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 01:42:48,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:48,056 INFO L225 Difference]: With dead ends: 2270 [2024-11-07 01:42:48,057 INFO L226 Difference]: Without dead ends: 1633 [2024-11-07 01:42:48,059 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=1566, Unknown=0, NotChecked=0, Total=1806 [2024-11-07 01:42:48,060 INFO L432 NwaCegarLoop]: 399 mSDtfsCounter, 1307 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 1541 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 2544 SdHoareTripleChecker+Invalid, 1632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1541 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-07 01:42:48,060 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 2544 Invalid, 1632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1541 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-07 01:42:48,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1633 states. [2024-11-07 01:42:48,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1633 to 1157. [2024-11-07 01:42:48,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1157 states, 1035 states have (on average 1.2995169082125604) internal successors, (1345), 1050 states have internal predecessors, (1345), 73 states have call successors, (73), 41 states have call predecessors, (73), 47 states have return successors, (98), 66 states have call predecessors, (98), 70 states have call successors, (98) [2024-11-07 01:42:48,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1157 states to 1157 states and 1516 transitions. [2024-11-07 01:42:48,121 INFO L78 Accepts]: Start accepts. Automaton has 1157 states and 1516 transitions. Word has length 69 [2024-11-07 01:42:48,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:48,121 INFO L471 AbstractCegarLoop]: Abstraction has 1157 states and 1516 transitions. [2024-11-07 01:42:48,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.272727272727273) internal successors, (146), 10 states have internal predecessors, (146), 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 01:42:48,121 INFO L276 IsEmpty]: Start isEmpty. Operand 1157 states and 1516 transitions. [2024-11-07 01:42:48,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-07 01:42:48,124 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:48,124 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 01:42:48,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-07 01:42:48,328 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 01:42:48,329 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:48,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:48,330 INFO L85 PathProgramCache]: Analyzing trace with hash -651103349, now seen corresponding path program 1 times [2024-11-07 01:42:48,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:48,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246095910] [2024-11-07 01:42:48,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:48,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:48,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:48,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:42:48,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:48,385 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 01:42:48,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:48,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2024-11-07 01:42:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:48,401 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2024-11-07 01:42:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2024-11-07 01:42:48,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:48,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246095910] [2024-11-07 01:42:48,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246095910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:42:48,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:42:48,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-07 01:42:48,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144774212] [2024-11-07 01:42:48,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:48,410 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-07 01:42:48,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:48,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-07 01:42:48,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-07 01:42:48,411 INFO L87 Difference]: Start difference. First operand 1157 states and 1516 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 01:42:48,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:48,762 INFO L93 Difference]: Finished difference Result 1869 states and 2392 transitions. [2024-11-07 01:42:48,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-07 01:42:48,763 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 88 [2024-11-07 01:42:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:48,769 INFO L225 Difference]: With dead ends: 1869 [2024-11-07 01:42:48,769 INFO L226 Difference]: Without dead ends: 1177 [2024-11-07 01:42:48,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 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 01:42:48,771 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 673 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-07 01:42:48,771 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 677 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-07 01:42:48,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1177 states. [2024-11-07 01:42:48,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1177 to 1075. [2024-11-07 01:42:48,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1075 states, 960 states have (on average 1.2927083333333333) internal successors, (1241), 975 states have internal predecessors, (1241), 70 states have call successors, (70), 38 states have call predecessors, (70), 43 states have return successors, (93), 62 states have call predecessors, (93), 67 states have call successors, (93) [2024-11-07 01:42:48,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1404 transitions. [2024-11-07 01:42:48,822 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1404 transitions. Word has length 88 [2024-11-07 01:42:48,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:48,822 INFO L471 AbstractCegarLoop]: Abstraction has 1075 states and 1404 transitions. [2024-11-07 01:42:48,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-07 01:42:48,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1404 transitions. [2024-11-07 01:42:48,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-07 01:42:48,825 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:48,825 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 01:42:48,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-07 01:42:48,825 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:48,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:48,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1364600849, now seen corresponding path program 1 times [2024-11-07 01:42:48,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:48,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005078612] [2024-11-07 01:42:48,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:48,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:48,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-07 01:42:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:48,915 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-07 01:42:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:48,930 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-07 01:42:48,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:48,933 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2024-11-07 01:42:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:48,939 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2024-11-07 01:42:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:48,944 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 16 proven. 24 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2024-11-07 01:42:48,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:48,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005078612] [2024-11-07 01:42:48,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005078612] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-07 01:42:48,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475443808] [2024-11-07 01:42:48,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:48,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-07 01:42:48,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-jdk21/releaseScripts/default/UAutomizer-linux/z3 [2024-11-07 01:42:48,951 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 01:42:48,953 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 01:42:49,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:49,060 INFO L255 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-07 01:42:49,063 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-07 01:42:49,078 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 01:42:49,078 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-07 01:42:49,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475443808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:42:49,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-07 01:42:49,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-07 01:42:49,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936428853] [2024-11-07 01:42:49,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:49,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-07 01:42:49,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:49,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-07 01:42:49,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 01:42:49,080 INFO L87 Difference]: Start difference. First operand 1075 states and 1404 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 01:42:49,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:49,117 INFO L93 Difference]: Finished difference Result 1397 states and 1796 transitions. [2024-11-07 01:42:49,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-07 01:42:49,118 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 01:42:49,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:49,120 INFO L225 Difference]: With dead ends: 1397 [2024-11-07 01:42:49,120 INFO L226 Difference]: Without dead ends: 268 [2024-11-07 01:42:49,122 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-07 01:42:49,122 INFO L432 NwaCegarLoop]: 545 mSDtfsCounter, 60 mSDsluCounter, 476 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1021 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-07 01:42:49,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1021 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-07 01:42:49,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2024-11-07 01:42:49,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 268. [2024-11-07 01:42:49,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 238 states have (on average 1.5420168067226891) internal successors, (367), 240 states have internal predecessors, (367), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-07 01:42:49,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 411 transitions. [2024-11-07 01:42:49,134 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 411 transitions. Word has length 103 [2024-11-07 01:42:49,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:49,134 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 411 transitions. [2024-11-07 01:42:49,134 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 01:42:49,134 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 411 transitions. [2024-11-07 01:42:49,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-07 01:42:49,135 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:49,135 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] [2024-11-07 01:42:49,152 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 01:42:49,339 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,SelfDestructingSolverStorable10 [2024-11-07 01:42:49,340 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:49,341 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:49,341 INFO L85 PathProgramCache]: Analyzing trace with hash 535279623, now seen corresponding path program 1 times [2024-11-07 01:42:49,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:49,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118080329] [2024-11-07 01:42:49,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:49,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:49,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:49,379 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:42:49,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:49,423 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 01:42:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:49,448 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-07 01:42:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:49,460 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 01:42:49,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:49,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-07 01:42:49,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:49,469 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 01:42:49,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:49,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118080329] [2024-11-07 01:42:49,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118080329] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:42:49,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:42:49,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-07 01:42:49,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461524503] [2024-11-07 01:42:49,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:49,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-07 01:42:49,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:49,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-07 01:42:49,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-07 01:42:49,471 INFO L87 Difference]: Start difference. First operand 268 states and 411 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 01:42:50,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:50,405 INFO L93 Difference]: Finished difference Result 611 states and 953 transitions. [2024-11-07 01:42:50,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-07 01:42:50,406 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 124 [2024-11-07 01:42:50,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:50,408 INFO L225 Difference]: With dead ends: 611 [2024-11-07 01:42:50,408 INFO L226 Difference]: Without dead ends: 355 [2024-11-07 01:42:50,410 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 01:42:50,410 INFO L432 NwaCegarLoop]: 253 mSDtfsCounter, 680 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-07 01:42:50,410 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 549 Invalid, 699 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-07 01:42:50,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 355 states. [2024-11-07 01:42:50,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 355 to 268. [2024-11-07 01:42:50,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 238 states have (on average 1.5378151260504203) internal successors, (366), 240 states have internal predecessors, (366), 23 states have call successors, (23), 7 states have call predecessors, (23), 6 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2024-11-07 01:42:50,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 410 transitions. [2024-11-07 01:42:50,443 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 410 transitions. Word has length 124 [2024-11-07 01:42:50,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:50,443 INFO L471 AbstractCegarLoop]: Abstraction has 268 states and 410 transitions. [2024-11-07 01:42:50,444 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 01:42:50,444 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 410 transitions. [2024-11-07 01:42:50,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-07 01:42:50,446 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:50,446 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] [2024-11-07 01:42:50,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-07 01:42:50,447 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:50,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:50,447 INFO L85 PathProgramCache]: Analyzing trace with hash -2112324731, now seen corresponding path program 1 times [2024-11-07 01:42:50,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:50,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1308607742] [2024-11-07 01:42:50,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:50,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:50,524 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:42:50,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:50,566 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 01:42:50,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:50,618 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-07 01:42:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:50,635 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 01:42:50,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:50,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-07 01:42:50,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:50,646 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 01:42:50,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:50,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1308607742] [2024-11-07 01:42:50,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1308607742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:42:50,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:42:50,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-07 01:42:50,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751254942] [2024-11-07 01:42:50,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:50,647 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-07 01:42:50,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:50,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-07 01:42:50,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-07 01:42:50,648 INFO L87 Difference]: Start difference. First operand 268 states and 410 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 01:42:52,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:52,039 INFO L93 Difference]: Finished difference Result 954 states and 1497 transitions. [2024-11-07 01:42:52,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-07 01:42:52,039 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 124 [2024-11-07 01:42:52,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:52,043 INFO L225 Difference]: With dead ends: 954 [2024-11-07 01:42:52,043 INFO L226 Difference]: Without dead ends: 702 [2024-11-07 01:42:52,044 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-07 01:42:52,045 INFO L432 NwaCegarLoop]: 233 mSDtfsCounter, 1010 mSDsluCounter, 702 mSDsCounter, 0 mSdLazyCounter, 1430 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1024 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 1526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-07 01:42:52,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1024 Valid, 935 Invalid, 1526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1430 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-07 01:42:52,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2024-11-07 01:42:52,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 527. [2024-11-07 01:42:52,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 474 states have (on average 1.5506329113924051) internal successors, (735), 477 states have internal predecessors, (735), 39 states have call successors, (39), 13 states have call predecessors, (39), 13 states have return successors, (40), 37 states have call predecessors, (40), 37 states have call successors, (40) [2024-11-07 01:42:52,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 814 transitions. [2024-11-07 01:42:52,080 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 814 transitions. Word has length 124 [2024-11-07 01:42:52,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:52,080 INFO L471 AbstractCegarLoop]: Abstraction has 527 states and 814 transitions. [2024-11-07 01:42:52,080 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 01:42:52,080 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 814 transitions. [2024-11-07 01:42:52,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-07 01:42:52,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:52,081 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] [2024-11-07 01:42:52,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-07 01:42:52,082 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:52,082 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:52,082 INFO L85 PathProgramCache]: Analyzing trace with hash 1559360963, now seen corresponding path program 1 times [2024-11-07 01:42:52,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:52,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496758901] [2024-11-07 01:42:52,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:52,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:52,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:52,186 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:42:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:52,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 01:42:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:52,277 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-07 01:42:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:52,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 01:42:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:52,301 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-07 01:42:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:52,303 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 01:42:52,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:52,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496758901] [2024-11-07 01:42:52,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496758901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:42:52,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:42:52,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:42:52,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486836213] [2024-11-07 01:42:52,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:52,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:42:52,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:52,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:42:52,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:42:52,307 INFO L87 Difference]: Start difference. First operand 527 states and 814 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:42:54,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:54,249 INFO L93 Difference]: Finished difference Result 1568 states and 2462 transitions. [2024-11-07 01:42:54,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 01:42:54,250 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-07 01:42:54,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:54,255 INFO L225 Difference]: With dead ends: 1568 [2024-11-07 01:42:54,255 INFO L226 Difference]: Without dead ends: 1057 [2024-11-07 01:42:54,257 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-07 01:42:54,258 INFO L432 NwaCegarLoop]: 410 mSDtfsCounter, 1021 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 2290 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 1801 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 2290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-07 01:42:54,258 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1035 Valid, 1801 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 2290 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-07 01:42:54,259 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1057 states. [2024-11-07 01:42:54,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1057 to 769. [2024-11-07 01:42:54,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 693 states have (on average 1.544011544011544) internal successors, (1070), 697 states have internal predecessors, (1070), 55 states have call successors, (55), 19 states have call predecessors, (55), 20 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2024-11-07 01:42:54,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1183 transitions. [2024-11-07 01:42:54,325 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1183 transitions. Word has length 124 [2024-11-07 01:42:54,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:54,325 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 1183 transitions. [2024-11-07 01:42:54,325 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:42:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1183 transitions. [2024-11-07 01:42:54,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-07 01:42:54,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:54,327 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] [2024-11-07 01:42:54,327 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-07 01:42:54,327 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:54,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:54,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1677802437, now seen corresponding path program 1 times [2024-11-07 01:42:54,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:54,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370861835] [2024-11-07 01:42:54,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:54,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:54,428 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:42:54,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:54,466 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 01:42:54,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:54,523 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-07 01:42:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:54,538 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 01:42:54,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:54,544 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-07 01:42:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:54,546 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 01:42:54,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:54,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370861835] [2024-11-07 01:42:54,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370861835] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:42:54,546 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:42:54,546 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:42:54,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554792790] [2024-11-07 01:42:54,546 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:54,547 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:42:54,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:54,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:42:54,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:42:54,548 INFO L87 Difference]: Start difference. First operand 769 states and 1183 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:42:56,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:56,354 INFO L93 Difference]: Finished difference Result 2473 states and 3875 transitions. [2024-11-07 01:42:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 01:42:56,354 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-07 01:42:56,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:56,362 INFO L225 Difference]: With dead ends: 2473 [2024-11-07 01:42:56,362 INFO L226 Difference]: Without dead ends: 1720 [2024-11-07 01:42:56,364 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-07 01:42:56,365 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 1025 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 2281 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1039 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 2338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-07 01:42:56,365 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1039 Valid, 1799 Invalid, 2338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2281 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-07 01:42:56,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1720 states. [2024-11-07 01:42:56,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1720 to 1254. [2024-11-07 01:42:56,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 1132 states have (on average 1.5379858657243817) internal successors, (1741), 1138 states have internal predecessors, (1741), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2024-11-07 01:42:56,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1926 transitions. [2024-11-07 01:42:56,462 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1926 transitions. Word has length 124 [2024-11-07 01:42:56,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:56,463 INFO L471 AbstractCegarLoop]: Abstraction has 1254 states and 1926 transitions. [2024-11-07 01:42:56,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:42:56,463 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1926 transitions. [2024-11-07 01:42:56,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-07 01:42:56,464 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:56,465 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] [2024-11-07 01:42:56,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-07 01:42:56,465 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:56,465 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:56,465 INFO L85 PathProgramCache]: Analyzing trace with hash -1227870845, now seen corresponding path program 1 times [2024-11-07 01:42:56,465 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:56,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569360239] [2024-11-07 01:42:56,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:56,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:56,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:42:56,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:56,596 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 01:42:56,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:56,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-07 01:42:56,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:56,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 01:42:56,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:56,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-07 01:42:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:56,675 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 01:42:56,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:56,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569360239] [2024-11-07 01:42:56,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569360239] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:42:56,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:42:56,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:42:56,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432263599] [2024-11-07 01:42:56,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:56,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:42:56,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:56,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:42:56,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:42:56,676 INFO L87 Difference]: Start difference. First operand 1254 states and 1926 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:42:57,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:42:57,725 INFO L93 Difference]: Finished difference Result 2942 states and 4601 transitions. [2024-11-07 01:42:57,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 01:42:57,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-07 01:42:57,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:42:57,737 INFO L225 Difference]: With dead ends: 2942 [2024-11-07 01:42:57,737 INFO L226 Difference]: Without dead ends: 1704 [2024-11-07 01:42:57,741 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-07 01:42:57,742 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 858 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 1126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-07 01:42:57,743 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 754 Invalid, 1126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-07 01:42:57,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1704 states. [2024-11-07 01:42:57,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1704 to 1254. [2024-11-07 01:42:57,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1254 states, 1132 states have (on average 1.5335689045936396) internal successors, (1736), 1138 states have internal predecessors, (1736), 87 states have call successors, (87), 31 states have call predecessors, (87), 34 states have return successors, (98), 88 states have call predecessors, (98), 85 states have call successors, (98) [2024-11-07 01:42:57,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1254 states to 1254 states and 1921 transitions. [2024-11-07 01:42:57,899 INFO L78 Accepts]: Start accepts. Automaton has 1254 states and 1921 transitions. Word has length 124 [2024-11-07 01:42:57,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:42:57,899 INFO L471 AbstractCegarLoop]: Abstraction has 1254 states and 1921 transitions. [2024-11-07 01:42:57,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:42:57,900 INFO L276 IsEmpty]: Start isEmpty. Operand 1254 states and 1921 transitions. [2024-11-07 01:42:57,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-07 01:42:57,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:42:57,901 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] [2024-11-07 01:42:57,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-07 01:42:57,902 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:42:57,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:42:57,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1200387777, now seen corresponding path program 1 times [2024-11-07 01:42:57,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:42:57,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106068432] [2024-11-07 01:42:57,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:42:57,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:42:57,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:57,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:42:57,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:58,031 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 01:42:58,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:58,082 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-07 01:42:58,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:58,094 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 01:42:58,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:58,099 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-07 01:42:58,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:42:58,102 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 01:42:58,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:42:58,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106068432] [2024-11-07 01:42:58,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106068432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:42:58,102 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:42:58,102 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:42:58,102 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782715063] [2024-11-07 01:42:58,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:42:58,103 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:42:58,103 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:42:58,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:42:58,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:42:58,104 INFO L87 Difference]: Start difference. First operand 1254 states and 1921 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:00,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:00,227 INFO L93 Difference]: Finished difference Result 4209 states and 6546 transitions. [2024-11-07 01:43:00,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 01:43:00,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-07 01:43:00,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:00,240 INFO L225 Difference]: With dead ends: 4209 [2024-11-07 01:43:00,241 INFO L226 Difference]: Without dead ends: 2971 [2024-11-07 01:43:00,243 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-07 01:43:00,244 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 1014 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 2228 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 2285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:00,244 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 1799 Invalid, 2285 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2228 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-07 01:43:00,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2971 states. [2024-11-07 01:43:00,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2971 to 2235. [2024-11-07 01:43:00,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 2021 states have (on average 1.52894606630381) internal successors, (3090), 2031 states have internal predecessors, (3090), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2024-11-07 01:43:00,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 3425 transitions. [2024-11-07 01:43:00,420 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 3425 transitions. Word has length 124 [2024-11-07 01:43:00,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:00,420 INFO L471 AbstractCegarLoop]: Abstraction has 2235 states and 3425 transitions. [2024-11-07 01:43:00,421 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:00,421 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 3425 transitions. [2024-11-07 01:43:00,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-07 01:43:00,423 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:00,423 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] [2024-11-07 01:43:00,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-07 01:43:00,423 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:00,424 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:00,424 INFO L85 PathProgramCache]: Analyzing trace with hash -106754621, now seen corresponding path program 1 times [2024-11-07 01:43:00,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:00,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325603707] [2024-11-07 01:43:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:00,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:00,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:00,489 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:00,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:00,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 01:43:00,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:00,573 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-07 01:43:00,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:00,585 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 01:43:00,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:00,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-07 01:43:00,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:00,594 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 01:43:00,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:00,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325603707] [2024-11-07 01:43:00,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325603707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:00,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:00,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:00,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171167631] [2024-11-07 01:43:00,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:00,596 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:00,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:00,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:00,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:00,597 INFO L87 Difference]: Start difference. First operand 2235 states and 3425 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:01,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:01,773 INFO L93 Difference]: Finished difference Result 5196 states and 8088 transitions. [2024-11-07 01:43:01,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 01:43:01,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-07 01:43:01,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:01,788 INFO L225 Difference]: With dead ends: 5196 [2024-11-07 01:43:01,788 INFO L226 Difference]: Without dead ends: 2977 [2024-11-07 01:43:01,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-07 01:43:01,794 INFO L432 NwaCegarLoop]: 218 mSDtfsCounter, 857 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 1022 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 872 SdHoareTripleChecker+Valid, 754 SdHoareTripleChecker+Invalid, 1104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:01,795 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [872 Valid, 754 Invalid, 1104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1022 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-07 01:43:01,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2977 states. [2024-11-07 01:43:01,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2977 to 2235. [2024-11-07 01:43:01,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2235 states, 2021 states have (on average 1.524492825333993) internal successors, (3081), 2031 states have internal predecessors, (3081), 151 states have call successors, (151), 55 states have call predecessors, (151), 62 states have return successors, (184), 156 states have call predecessors, (184), 149 states have call successors, (184) [2024-11-07 01:43:01,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2235 states to 2235 states and 3416 transitions. [2024-11-07 01:43:01,974 INFO L78 Accepts]: Start accepts. Automaton has 2235 states and 3416 transitions. Word has length 124 [2024-11-07 01:43:01,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:01,974 INFO L471 AbstractCegarLoop]: Abstraction has 2235 states and 3416 transitions. [2024-11-07 01:43:01,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:01,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2235 states and 3416 transitions. [2024-11-07 01:43:01,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-07 01:43:01,979 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:01,979 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] [2024-11-07 01:43:01,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-07 01:43:01,979 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:01,979 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:01,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1790742145, now seen corresponding path program 1 times [2024-11-07 01:43:01,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:01,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726177173] [2024-11-07 01:43:01,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:01,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:01,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:02,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:02,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:02,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 01:43:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:02,174 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-07 01:43:02,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:02,188 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 01:43:02,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:02,194 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-07 01:43:02,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:02,197 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 01:43:02,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:02,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726177173] [2024-11-07 01:43:02,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726177173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:02,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:02,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:02,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449075344] [2024-11-07 01:43:02,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:02,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:02,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:02,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:02,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:02,200 INFO L87 Difference]: Start difference. First operand 2235 states and 3416 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:04,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:04,294 INFO L93 Difference]: Finished difference Result 7694 states and 11908 transitions. [2024-11-07 01:43:04,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-07 01:43:04,294 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-07 01:43:04,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:04,324 INFO L225 Difference]: With dead ends: 7694 [2024-11-07 01:43:04,324 INFO L226 Difference]: Without dead ends: 5475 [2024-11-07 01:43:04,329 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2024-11-07 01:43:04,330 INFO L432 NwaCegarLoop]: 408 mSDtfsCounter, 1006 mSDsluCounter, 1391 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1020 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 2247 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:04,330 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1020 Valid, 1799 Invalid, 2247 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2190 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-07 01:43:04,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5475 states. [2024-11-07 01:43:04,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5475 to 4209. [2024-11-07 01:43:04,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 3811 states have (on average 1.5200734715297821) internal successors, (5793), 3829 states have internal predecessors, (5793), 279 states have call successors, (279), 103 states have call predecessors, (279), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2024-11-07 01:43:04,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 6446 transitions. [2024-11-07 01:43:04,662 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 6446 transitions. Word has length 124 [2024-11-07 01:43:04,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:04,663 INFO L471 AbstractCegarLoop]: Abstraction has 4209 states and 6446 transitions. [2024-11-07 01:43:04,663 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:04,663 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 6446 transitions. [2024-11-07 01:43:04,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-07 01:43:04,666 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:04,666 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] [2024-11-07 01:43:04,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-07 01:43:04,667 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:04,667 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:04,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1473184253, now seen corresponding path program 1 times [2024-11-07 01:43:04,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:04,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837198738] [2024-11-07 01:43:04,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:04,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:04,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:04,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:04,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:04,795 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 01:43:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:04,834 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-07 01:43:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:04,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 01:43:04,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:04,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-07 01:43:04,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:04,851 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 01:43:04,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:04,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837198738] [2024-11-07 01:43:04,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837198738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:04,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:04,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:04,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935850503] [2024-11-07 01:43:04,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:04,853 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:04,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:04,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:04,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:04,853 INFO L87 Difference]: Start difference. First operand 4209 states and 6446 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:06,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:06,047 INFO L93 Difference]: Finished difference Result 9700 states and 15071 transitions. [2024-11-07 01:43:06,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-07 01:43:06,047 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-07 01:43:06,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:06,072 INFO L225 Difference]: With dead ends: 9700 [2024-11-07 01:43:06,072 INFO L226 Difference]: Without dead ends: 5507 [2024-11-07 01:43:06,084 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-07 01:43:06,085 INFO L432 NwaCegarLoop]: 217 mSDtfsCounter, 884 mSDsluCounter, 534 mSDsCounter, 0 mSdLazyCounter, 969 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 969 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:06,085 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 751 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 969 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-07 01:43:06,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5507 states. [2024-11-07 01:43:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5507 to 4209. [2024-11-07 01:43:06,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4209 states, 3811 states have (on average 1.5156127000787194) internal successors, (5776), 3829 states have internal predecessors, (5776), 279 states have call successors, (279), 103 states have call predecessors, (279), 118 states have return successors, (374), 292 states have call predecessors, (374), 277 states have call successors, (374) [2024-11-07 01:43:06,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4209 states to 4209 states and 6429 transitions. [2024-11-07 01:43:06,389 INFO L78 Accepts]: Start accepts. Automaton has 4209 states and 6429 transitions. Word has length 124 [2024-11-07 01:43:06,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:06,390 INFO L471 AbstractCegarLoop]: Abstraction has 4209 states and 6429 transitions. [2024-11-07 01:43:06,391 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:06,391 INFO L276 IsEmpty]: Start isEmpty. Operand 4209 states and 6429 transitions. [2024-11-07 01:43:06,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-07 01:43:06,395 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:06,395 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] [2024-11-07 01:43:06,395 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-07 01:43:06,395 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:06,396 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:06,396 INFO L85 PathProgramCache]: Analyzing trace with hash 915379777, now seen corresponding path program 1 times [2024-11-07 01:43:06,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:06,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369355014] [2024-11-07 01:43:06,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:06,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:06,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:06,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:06,504 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 01:43:06,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:06,550 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-07 01:43:06,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:06,560 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 01:43:06,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:06,565 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-07 01:43:06,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:06,567 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 01:43:06,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:06,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369355014] [2024-11-07 01:43:06,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369355014] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:06,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:06,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:06,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36591835] [2024-11-07 01:43:06,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:06,569 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:06,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:06,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:06,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:06,570 INFO L87 Difference]: Start difference. First operand 4209 states and 6429 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:09,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:09,123 INFO L93 Difference]: Finished difference Result 16184 states and 24970 transitions. [2024-11-07 01:43:09,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 01:43:09,124 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-07 01:43:09,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:09,160 INFO L225 Difference]: With dead ends: 16184 [2024-11-07 01:43:09,160 INFO L226 Difference]: Without dead ends: 11991 [2024-11-07 01:43:09,171 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-07 01:43:09,172 INFO L432 NwaCegarLoop]: 405 mSDtfsCounter, 1060 mSDsluCounter, 1380 mSDsCounter, 0 mSdLazyCounter, 2576 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1785 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 2576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:09,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 1785 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 2576 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-07 01:43:09,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11991 states. [2024-11-07 01:43:09,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11991 to 7979. [2024-11-07 01:43:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7979 states, 7229 states have (on average 1.507815742149675) internal successors, (10900), 7263 states have internal predecessors, (10900), 519 states have call successors, (519), 199 states have call predecessors, (519), 230 states have return successors, (792), 548 states have call predecessors, (792), 517 states have call successors, (792) [2024-11-07 01:43:09,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7979 states to 7979 states and 12211 transitions. [2024-11-07 01:43:09,757 INFO L78 Accepts]: Start accepts. Automaton has 7979 states and 12211 transitions. Word has length 124 [2024-11-07 01:43:09,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:09,758 INFO L471 AbstractCegarLoop]: Abstraction has 7979 states and 12211 transitions. [2024-11-07 01:43:09,758 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:09,758 INFO L276 IsEmpty]: Start isEmpty. Operand 7979 states and 12211 transitions. [2024-11-07 01:43:09,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-07 01:43:09,764 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:09,764 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] [2024-11-07 01:43:09,764 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-07 01:43:09,764 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:09,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:09,765 INFO L85 PathProgramCache]: Analyzing trace with hash -1778516413, now seen corresponding path program 1 times [2024-11-07 01:43:09,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:09,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [401693083] [2024-11-07 01:43:09,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:09,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:09,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:09,831 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:09,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:09,867 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 01:43:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:09,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-07 01:43:09,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:09,922 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 01:43:09,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:09,927 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-07 01:43:09,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:09,929 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 01:43:09,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:09,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [401693083] [2024-11-07 01:43:09,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [401693083] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:09,930 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:09,930 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:09,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780484441] [2024-11-07 01:43:09,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:09,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:09,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:09,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:09,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:09,931 INFO L87 Difference]: Start difference. First operand 7979 states and 12211 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:12,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:12,992 INFO L93 Difference]: Finished difference Result 30640 states and 47378 transitions. [2024-11-07 01:43:12,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 01:43:12,993 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-07 01:43:12,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:13,087 INFO L225 Difference]: With dead ends: 30640 [2024-11-07 01:43:13,088 INFO L226 Difference]: Without dead ends: 22677 [2024-11-07 01:43:13,117 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-07 01:43:13,119 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 1216 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 2127 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1238 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 2187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:13,119 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1238 Valid, 1789 Invalid, 2187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2127 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-07 01:43:13,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22677 states. [2024-11-07 01:43:14,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22677 to 15660. [2024-11-07 01:43:14,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15660 states, 14222 states have (on average 1.5079454366474476) internal successors, (21446), 14288 states have internal predecessors, (21446), 983 states have call successors, (983), 391 states have call predecessors, (983), 454 states have return successors, (1774), 1044 states have call predecessors, (1774), 981 states have call successors, (1774) [2024-11-07 01:43:14,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15660 states to 15660 states and 24203 transitions. [2024-11-07 01:43:14,268 INFO L78 Accepts]: Start accepts. Automaton has 15660 states and 24203 transitions. Word has length 124 [2024-11-07 01:43:14,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:14,268 INFO L471 AbstractCegarLoop]: Abstraction has 15660 states and 24203 transitions. [2024-11-07 01:43:14,268 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:14,268 INFO L276 IsEmpty]: Start isEmpty. Operand 15660 states and 24203 transitions. [2024-11-07 01:43:14,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-07 01:43:14,278 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:14,278 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] [2024-11-07 01:43:14,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-07 01:43:14,278 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:14,278 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:14,278 INFO L85 PathProgramCache]: Analyzing trace with hash 1459719681, now seen corresponding path program 1 times [2024-11-07 01:43:14,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:14,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339103293] [2024-11-07 01:43:14,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:14,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:14,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:14,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:14,373 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 01:43:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:14,414 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-07 01:43:14,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:14,425 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 01:43:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:14,433 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-07 01:43:14,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:14,435 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 01:43:14,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:14,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339103293] [2024-11-07 01:43:14,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339103293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:14,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:14,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:14,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488449919] [2024-11-07 01:43:14,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:14,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:14,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:14,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:14,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:14,438 INFO L87 Difference]: Start difference. First operand 15660 states and 24203 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:18,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:18,928 INFO L93 Difference]: Finished difference Result 58445 states and 91316 transitions. [2024-11-07 01:43:18,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 01:43:18,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-07 01:43:18,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:19,097 INFO L225 Difference]: With dead ends: 58445 [2024-11-07 01:43:19,097 INFO L226 Difference]: Without dead ends: 42801 [2024-11-07 01:43:19,145 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-07 01:43:19,146 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 1133 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 2100 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1155 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 2160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:19,146 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1155 Valid, 1789 Invalid, 2160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2100 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-07 01:43:19,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42801 states. [2024-11-07 01:43:21,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42801 to 31054. [2024-11-07 01:43:21,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31054 states, 28272 states have (on average 1.5102574985851727) internal successors, (42698), 28402 states have internal predecessors, (42698), 1879 states have call successors, (1879), 775 states have call predecessors, (1879), 902 states have return successors, (4192), 2004 states have call predecessors, (4192), 1877 states have call successors, (4192) [2024-11-07 01:43:21,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31054 states to 31054 states and 48769 transitions. [2024-11-07 01:43:21,563 INFO L78 Accepts]: Start accepts. Automaton has 31054 states and 48769 transitions. Word has length 124 [2024-11-07 01:43:21,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:21,564 INFO L471 AbstractCegarLoop]: Abstraction has 31054 states and 48769 transitions. [2024-11-07 01:43:21,564 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:21,564 INFO L276 IsEmpty]: Start isEmpty. Operand 31054 states and 48769 transitions. [2024-11-07 01:43:21,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-07 01:43:21,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:21,584 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] [2024-11-07 01:43:21,585 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-07 01:43:21,585 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:21,585 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:21,585 INFO L85 PathProgramCache]: Analyzing trace with hash -159255233, now seen corresponding path program 1 times [2024-11-07 01:43:21,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:21,586 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832512624] [2024-11-07 01:43:21,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:21,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:21,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:21,661 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:21,703 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 01:43:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:21,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-07 01:43:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:21,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 01:43:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:21,774 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-07 01:43:21,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:21,776 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 01:43:21,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:21,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832512624] [2024-11-07 01:43:21,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832512624] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:21,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:21,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:21,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106577721] [2024-11-07 01:43:21,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:21,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:21,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:21,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:21,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:21,778 INFO L87 Difference]: Start difference. First operand 31054 states and 48769 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:28,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-07 01:43:28,020 INFO L93 Difference]: Finished difference Result 113901 states and 180796 transitions. [2024-11-07 01:43:28,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-07 01:43:28,021 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2024-11-07 01:43:28,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-07 01:43:28,387 INFO L225 Difference]: With dead ends: 113901 [2024-11-07 01:43:28,388 INFO L226 Difference]: Without dead ends: 82863 [2024-11-07 01:43:28,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-07 01:43:28,501 INFO L432 NwaCegarLoop]: 406 mSDtfsCounter, 1093 mSDsluCounter, 1383 mSDsCounter, 0 mSdLazyCounter, 2087 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1115 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 2147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 2087 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-07 01:43:28,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1115 Valid, 1789 Invalid, 2147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 2087 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-07 01:43:28,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82863 states. [2024-11-07 01:43:33,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82863 to 61775. [2024-11-07 01:43:33,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61775 states, 56369 states have (on average 1.5125334847167768) internal successors, (85260), 56627 states have internal predecessors, (85260), 3607 states have call successors, (3607), 1543 states have call predecessors, (3607), 1798 states have return successors, (10422), 3860 states have call predecessors, (10422), 3605 states have call successors, (10422) [2024-11-07 01:43:34,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61775 states to 61775 states and 99289 transitions. [2024-11-07 01:43:34,124 INFO L78 Accepts]: Start accepts. Automaton has 61775 states and 99289 transitions. Word has length 124 [2024-11-07 01:43:34,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-07 01:43:34,124 INFO L471 AbstractCegarLoop]: Abstraction has 61775 states and 99289 transitions. [2024-11-07 01:43:34,125 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 01:43:34,125 INFO L276 IsEmpty]: Start isEmpty. Operand 61775 states and 99289 transitions. [2024-11-07 01:43:34,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2024-11-07 01:43:34,158 INFO L207 NwaCegarLoop]: Found error trace [2024-11-07 01:43:34,158 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] [2024-11-07 01:43:34,158 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-07 01:43:34,158 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-07 01:43:34,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-07 01:43:34,159 INFO L85 PathProgramCache]: Analyzing trace with hash -1042764223, now seen corresponding path program 1 times [2024-11-07 01:43:34,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-07 01:43:34,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62186117] [2024-11-07 01:43:34,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-07 01:43:34,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-07 01:43:34,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:34,221 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-07 01:43:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:34,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-07 01:43:34,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:34,304 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-07 01:43:34,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:34,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-07 01:43:34,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:34,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2024-11-07 01:43:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-07 01:43:34,319 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 01:43:34,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-07 01:43:34,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62186117] [2024-11-07 01:43:34,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62186117] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-07 01:43:34,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-07 01:43:34,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-07 01:43:34,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454933795] [2024-11-07 01:43:34,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-07 01:43:34,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-07 01:43:34,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-07 01:43:34,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-07 01:43:34,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-07 01:43:34,323 INFO L87 Difference]: Start difference. First operand 61775 states and 99289 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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)