./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/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 2299ca1c26d35c3e5f6d860495fd40e041317a8644bf02bee237b59c63427ec2 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 09:55:04,691 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 09:55:04,762 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 09:55:04,767 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 09:55:04,768 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 09:55:04,795 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 09:55:04,796 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 09:55:04,796 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 09:55:04,797 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 09:55:04,798 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 09:55:04,799 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 09:55:04,799 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 09:55:04,801 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 09:55:04,801 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 09:55:04,803 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 09:55:04,803 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 09:55:04,804 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 09:55:04,804 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 09:55:04,804 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 09:55:04,804 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 09:55:04,808 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 09:55:04,809 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 09:55:04,810 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 09:55:04,810 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 09:55:04,810 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 09:55:04,810 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 09:55:04,811 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 09:55:04,811 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 09:55:04,811 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 09:55:04,811 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 09:55:04,812 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 09:55:04,812 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 09:55:04,812 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:55:04,812 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 09:55:04,813 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 09:55:04,813 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 09:55:04,813 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 09:55:04,814 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 09:55:04,814 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 09:55:04,814 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 09:55:04,815 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 09:55:04,815 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 09:55:04,815 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2299ca1c26d35c3e5f6d860495fd40e041317a8644bf02bee237b59c63427ec2 [2024-11-16 09:55:05,104 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 09:55:05,129 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 09:55:05,133 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 09:55:05,134 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 09:55:05,135 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 09:55:05,136 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2024-11-16 09:55:06,584 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 09:55:06,875 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 09:55:06,876 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2024-11-16 09:55:06,892 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76b6c5078/4bda309d23974b0992b72002daf214fa/FLAG13dd85f9b [2024-11-16 09:55:07,202 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76b6c5078/4bda309d23974b0992b72002daf214fa [2024-11-16 09:55:07,205 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 09:55:07,206 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 09:55:07,207 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 09:55:07,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 09:55:07,214 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 09:55:07,215 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:55:07" (1/1) ... [2024-11-16 09:55:07,216 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37be9446 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:07, skipping insertion in model container [2024-11-16 09:55:07,216 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 09:55:07" (1/1) ... [2024-11-16 09:55:07,262 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 09:55:07,450 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[914,927] [2024-11-16 09:55:07,518 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[7115,7128] [2024-11-16 09:55:07,588 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:55:07,605 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 09:55:07,617 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[914,927] [2024-11-16 09:55:07,641 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.06.cil-1.c[7115,7128] [2024-11-16 09:55:07,702 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 09:55:07,725 INFO L204 MainTranslator]: Completed translation [2024-11-16 09:55:07,726 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:07 WrapperNode [2024-11-16 09:55:07,726 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 09:55:07,727 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 09:55:07,727 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 09:55:07,727 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 09:55:07,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:07" (1/1) ... [2024-11-16 09:55:07,744 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:07" (1/1) ... [2024-11-16 09:55:07,806 INFO L138 Inliner]: procedures = 65, calls = 76, calls flagged for inlining = 33, calls inlined = 33, statements flattened = 701 [2024-11-16 09:55:07,807 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 09:55:07,813 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 09:55:07,813 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 09:55:07,813 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 09:55:07,828 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:07" (1/1) ... [2024-11-16 09:55:07,828 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:07" (1/1) ... [2024-11-16 09:55:07,836 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:07" (1/1) ... [2024-11-16 09:55:07,867 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]. [2024-11-16 09:55:07,867 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:07" (1/1) ... [2024-11-16 09:55:07,867 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:07" (1/1) ... [2024-11-16 09:55:07,883 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:07" (1/1) ... [2024-11-16 09:55:07,884 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:07" (1/1) ... [2024-11-16 09:55:07,890 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:07" (1/1) ... [2024-11-16 09:55:07,892 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:07" (1/1) ... [2024-11-16 09:55:07,895 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 09:55:07,896 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 09:55:07,896 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 09:55:07,897 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 09:55:07,897 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:07" (1/1) ... [2024-11-16 09:55:07,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 09:55:07,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:55:07,932 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 09:55:07,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 09:55:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 09:55:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-16 09:55:07,978 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-16 09:55:07,978 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-16 09:55:07,979 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-16 09:55:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-16 09:55:07,979 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-16 09:55:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-16 09:55:07,979 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-16 09:55:07,979 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-16 09:55:07,980 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-16 09:55:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-16 09:55:07,980 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-16 09:55:07,980 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-16 09:55:07,980 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-16 09:55:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-16 09:55:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-16 09:55:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-16 09:55:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-16 09:55:07,981 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-16 09:55:07,981 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-16 09:55:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-16 09:55:07,982 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-16 09:55:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 09:55:07,982 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-16 09:55:07,982 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-16 09:55:07,983 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-16 09:55:07,983 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-16 09:55:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 09:55:07,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 09:55:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-16 09:55:07,984 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-16 09:55:07,984 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-16 09:55:07,984 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-16 09:55:08,137 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 09:55:08,143 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 09:55:08,957 INFO L? ?]: Removed 95 outVars from TransFormulas that were not future-live. [2024-11-16 09:55:08,958 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 09:55:08,987 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 09:55:08,988 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 09:55:08,988 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:55:08 BoogieIcfgContainer [2024-11-16 09:55:08,988 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 09:55:08,991 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 09:55:08,991 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 09:55:08,994 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 09:55:08,994 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 09:55:07" (1/3) ... [2024-11-16 09:55:08,995 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6217d7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:55:08, skipping insertion in model container [2024-11-16 09:55:08,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 09:55:07" (2/3) ... [2024-11-16 09:55:08,996 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6217d7d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 09:55:08, skipping insertion in model container [2024-11-16 09:55:08,996 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 09:55:08" (3/3) ... [2024-11-16 09:55:08,997 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.06.cil-1.c [2024-11-16 09:55:09,010 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 09:55:09,010 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 09:55:09,083 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 09:55:09,090 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;@528c5d64, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 09:55:09,091 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-16 09:55:09,101 INFO L276 IsEmpty]: Start isEmpty. Operand has 402 states, 348 states have (on average 1.5057471264367817) internal successors, (524), 356 states have internal predecessors, (524), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2024-11-16 09:55:09,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:55:09,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:09,118 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] [2024-11-16 09:55:09,119 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:09,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:09,125 INFO L85 PathProgramCache]: Analyzing trace with hash 1935944084, now seen corresponding path program 1 times [2024-11-16 09:55:09,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:09,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123849879] [2024-11-16 09:55:09,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:09,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:09,472 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:09,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:09,506 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:55:09,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:09,532 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:55:09,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:09,551 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:55:09,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:09,556 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:55:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:09,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:55:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:09,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:55:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:09,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:09,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:09,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123849879] [2024-11-16 09:55:09,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123849879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:09,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:09,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:55:09,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457838974] [2024-11-16 09:55:09,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:09,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:55:09,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:09,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:55:09,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:55:09,622 INFO L87 Difference]: Start difference. First operand has 402 states, 348 states have (on average 1.5057471264367817) internal successors, (524), 356 states have internal predecessors, (524), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-16 09:55:10,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:10,476 INFO L93 Difference]: Finished difference Result 788 states and 1172 transitions. [2024-11-16 09:55:10,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 09:55:10,479 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2024-11-16 09:55:10,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:10,491 INFO L225 Difference]: With dead ends: 788 [2024-11-16 09:55:10,492 INFO L226 Difference]: Without dead ends: 396 [2024-11-16 09:55:10,498 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:55:10,503 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 531 mSDsluCounter, 1050 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 541 SdHoareTripleChecker+Valid, 1397 SdHoareTripleChecker+Invalid, 647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:10,505 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [541 Valid, 1397 Invalid, 647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 09:55:10,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-16 09:55:10,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 378. [2024-11-16 09:55:10,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 378 states, 327 states have (on average 1.4434250764525993) internal successors, (472), 332 states have internal predecessors, (472), 36 states have call successors, (36), 15 states have call predecessors, (36), 13 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-16 09:55:10,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 378 states to 378 states and 540 transitions. [2024-11-16 09:55:10,596 INFO L78 Accepts]: Start accepts. Automaton has 378 states and 540 transitions. Word has length 69 [2024-11-16 09:55:10,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:10,597 INFO L471 AbstractCegarLoop]: Abstraction has 378 states and 540 transitions. [2024-11-16 09:55:10,597 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-16 09:55:10,598 INFO L276 IsEmpty]: Start isEmpty. Operand 378 states and 540 transitions. [2024-11-16 09:55:10,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:55:10,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:10,604 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] [2024-11-16 09:55:10,604 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 09:55:10,604 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:10,605 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:10,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1655594195, now seen corresponding path program 1 times [2024-11-16 09:55:10,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:10,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589100008] [2024-11-16 09:55:10,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:10,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:10,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:10,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:10,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:10,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:55:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:10,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:55:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:10,906 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:55:10,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:10,911 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:55:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:10,913 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:55:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:10,920 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:55:10,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:10,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:10,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:10,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589100008] [2024-11-16 09:55:10,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589100008] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:10,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:10,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 09:55:10,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740842544] [2024-11-16 09:55:10,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:10,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 09:55:10,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:10,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 09:55:10,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:55:10,935 INFO L87 Difference]: Start difference. First operand 378 states and 540 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-16 09:55:11,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:11,969 INFO L93 Difference]: Finished difference Result 629 states and 882 transitions. [2024-11-16 09:55:11,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:55:11,971 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2024-11-16 09:55:11,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:11,978 INFO L225 Difference]: With dead ends: 629 [2024-11-16 09:55:11,978 INFO L226 Difference]: Without dead ends: 527 [2024-11-16 09:55:11,979 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:55:11,980 INFO L432 NwaCegarLoop]: 336 mSDtfsCounter, 873 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 1001 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 878 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 1164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:11,981 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [878 Valid, 1703 Invalid, 1164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1001 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 09:55:11,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2024-11-16 09:55:12,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 487. [2024-11-16 09:55:12,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 416 states have (on average 1.4158653846153846) internal successors, (589), 423 states have internal predecessors, (589), 47 states have call successors, (47), 22 states have call predecessors, (47), 22 states have return successors, (48), 44 states have call predecessors, (48), 43 states have call successors, (48) [2024-11-16 09:55:12,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 684 transitions. [2024-11-16 09:55:12,039 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 684 transitions. Word has length 69 [2024-11-16 09:55:12,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:12,040 INFO L471 AbstractCegarLoop]: Abstraction has 487 states and 684 transitions. [2024-11-16 09:55:12,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-16 09:55:12,040 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 684 transitions. [2024-11-16 09:55:12,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:55:12,042 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:12,042 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] [2024-11-16 09:55:12,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 09:55:12,043 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:12,043 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:12,044 INFO L85 PathProgramCache]: Analyzing trace with hash -603264624, now seen corresponding path program 1 times [2024-11-16 09:55:12,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:12,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426982851] [2024-11-16 09:55:12,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:12,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:12,211 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:12,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:12,228 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:55:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:12,263 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:55:12,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:12,272 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:55:12,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:12,283 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:55:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:12,290 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:55:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:12,298 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:55:12,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:12,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:12,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:12,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426982851] [2024-11-16 09:55:12,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426982851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:12,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:12,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 09:55:12,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397102567] [2024-11-16 09:55:12,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:12,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 09:55:12,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:12,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 09:55:12,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:55:12,308 INFO L87 Difference]: Start difference. First operand 487 states and 684 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-16 09:55:13,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:13,499 INFO L93 Difference]: Finished difference Result 875 states and 1201 transitions. [2024-11-16 09:55:13,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 09:55:13,499 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2024-11-16 09:55:13,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:13,507 INFO L225 Difference]: With dead ends: 875 [2024-11-16 09:55:13,507 INFO L226 Difference]: Without dead ends: 671 [2024-11-16 09:55:13,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2024-11-16 09:55:13,509 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 1055 mSDsluCounter, 1690 mSDsCounter, 0 mSdLazyCounter, 1243 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1080 SdHoareTripleChecker+Valid, 2076 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:13,510 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1080 Valid, 2076 Invalid, 1368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1243 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 09:55:13,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-16 09:55:13,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 596. [2024-11-16 09:55:13,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 596 states, 505 states have (on average 1.396039603960396) internal successors, (705), 514 states have internal predecessors, (705), 58 states have call successors, (58), 29 states have call predecessors, (58), 31 states have return successors, (67), 56 states have call predecessors, (67), 54 states have call successors, (67) [2024-11-16 09:55:13,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 830 transitions. [2024-11-16 09:55:13,559 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 830 transitions. Word has length 69 [2024-11-16 09:55:13,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:13,559 INFO L471 AbstractCegarLoop]: Abstraction has 596 states and 830 transitions. [2024-11-16 09:55:13,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-16 09:55:13,560 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 830 transitions. [2024-11-16 09:55:13,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:55:13,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:13,562 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] [2024-11-16 09:55:13,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-16 09:55:13,562 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:13,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:13,563 INFO L85 PathProgramCache]: Analyzing trace with hash 90128081, now seen corresponding path program 1 times [2024-11-16 09:55:13,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:13,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234526172] [2024-11-16 09:55:13,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:13,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:13,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:13,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:13,626 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:55:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:13,633 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:55:13,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:13,667 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:55:13,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:13,691 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:55:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:13,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:55:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:13,696 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:55:13,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:13,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:13,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:13,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234526172] [2024-11-16 09:55:13,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234526172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:13,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:13,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 09:55:13,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991683697] [2024-11-16 09:55:13,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:13,701 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 09:55:13,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:13,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 09:55:13,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:55:13,702 INFO L87 Difference]: Start difference. First operand 596 states and 830 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:55:14,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:14,703 INFO L93 Difference]: Finished difference Result 935 states and 1281 transitions. [2024-11-16 09:55:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 09:55:14,704 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2024-11-16 09:55:14,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:14,711 INFO L225 Difference]: With dead ends: 935 [2024-11-16 09:55:14,712 INFO L226 Difference]: Without dead ends: 628 [2024-11-16 09:55:14,714 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-11-16 09:55:14,718 INFO L432 NwaCegarLoop]: 337 mSDtfsCounter, 414 mSDsluCounter, 2004 mSDsCounter, 0 mSdLazyCounter, 1371 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 415 SdHoareTripleChecker+Valid, 2341 SdHoareTripleChecker+Invalid, 1450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:14,719 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [415 Valid, 2341 Invalid, 1450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1371 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 09:55:14,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2024-11-16 09:55:14,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 601. [2024-11-16 09:55:14,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 601 states, 509 states have (on average 1.3889980353634577) internal successors, (707), 518 states have internal predecessors, (707), 58 states have call successors, (58), 29 states have call predecessors, (58), 32 states have return successors, (68), 57 states have call predecessors, (68), 54 states have call successors, (68) [2024-11-16 09:55:14,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 601 states to 601 states and 833 transitions. [2024-11-16 09:55:14,766 INFO L78 Accepts]: Start accepts. Automaton has 601 states and 833 transitions. Word has length 69 [2024-11-16 09:55:14,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:14,768 INFO L471 AbstractCegarLoop]: Abstraction has 601 states and 833 transitions. [2024-11-16 09:55:14,768 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:55:14,768 INFO L276 IsEmpty]: Start isEmpty. Operand 601 states and 833 transitions. [2024-11-16 09:55:14,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-16 09:55:14,770 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:14,770 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] [2024-11-16 09:55:14,770 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-16 09:55:14,771 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:14,771 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:14,771 INFO L85 PathProgramCache]: Analyzing trace with hash 214201328, now seen corresponding path program 1 times [2024-11-16 09:55:14,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:14,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880603809] [2024-11-16 09:55:14,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:14,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:14,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:14,855 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:14,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:14,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:55:14,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:14,918 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:55:14,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:14,943 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:55:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:14,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:55:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:14,952 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:55:14,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:14,956 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:55:14,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:14,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:14,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:14,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880603809] [2024-11-16 09:55:14,962 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880603809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:14,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:14,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-16 09:55:14,963 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254790733] [2024-11-16 09:55:14,963 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:14,963 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 09:55:14,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:14,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 09:55:14,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-16 09:55:14,965 INFO L87 Difference]: Start difference. First operand 601 states and 833 transitions. Second operand has 10 states, 10 states have (on average 5.4) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-16 09:55:16,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:16,787 INFO L93 Difference]: Finished difference Result 2117 states and 2822 transitions. [2024-11-16 09:55:16,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-16 09:55:16,788 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 69 [2024-11-16 09:55:16,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:16,796 INFO L225 Difference]: With dead ends: 2117 [2024-11-16 09:55:16,797 INFO L226 Difference]: Without dead ends: 1787 [2024-11-16 09:55:16,800 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2024-11-16 09:55:16,801 INFO L432 NwaCegarLoop]: 400 mSDtfsCounter, 3164 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 1490 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3178 SdHoareTripleChecker+Valid, 2064 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 1490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:16,802 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3178 Valid, 2064 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 1490 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-16 09:55:16,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1787 states. [2024-11-16 09:55:16,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1787 to 1635. [2024-11-16 09:55:16,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1357 states have (on average 1.3124539425202653) internal successors, (1781), 1381 states have internal predecessors, (1781), 146 states have call successors, (146), 112 states have call predecessors, (146), 130 states have return successors, (182), 144 states have call predecessors, (182), 142 states have call successors, (182) [2024-11-16 09:55:16,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 2109 transitions. [2024-11-16 09:55:16,922 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 2109 transitions. Word has length 69 [2024-11-16 09:55:16,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:16,923 INFO L471 AbstractCegarLoop]: Abstraction has 1635 states and 2109 transitions. [2024-11-16 09:55:16,924 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.4) internal successors, (54), 7 states have internal predecessors, (54), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-16 09:55:16,924 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 2109 transitions. [2024-11-16 09:55:16,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 09:55:16,925 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:16,925 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] [2024-11-16 09:55:16,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 09:55:16,926 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:16,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:16,927 INFO L85 PathProgramCache]: Analyzing trace with hash 525935723, now seen corresponding path program 1 times [2024-11-16 09:55:16,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:16,927 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105075388] [2024-11-16 09:55:16,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:16,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:16,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:16,980 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:16,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:16,987 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:55:16,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:16,998 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:55:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:17,032 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:55:17,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:17,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:55:17,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:17,060 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:55:17,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:17,063 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:55:17,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:17,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:17,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:17,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105075388] [2024-11-16 09:55:17,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105075388] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:17,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:17,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 09:55:17,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586081692] [2024-11-16 09:55:17,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:17,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 09:55:17,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:17,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 09:55:17,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:55:17,070 INFO L87 Difference]: Start difference. First operand 1635 states and 2109 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:55:18,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:18,051 INFO L93 Difference]: Finished difference Result 3095 states and 3951 transitions. [2024-11-16 09:55:18,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 09:55:18,052 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2024-11-16 09:55:18,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:18,061 INFO L225 Difference]: With dead ends: 3095 [2024-11-16 09:55:18,061 INFO L226 Difference]: Without dead ends: 1737 [2024-11-16 09:55:18,064 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:55:18,065 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 622 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 1288 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 624 SdHoareTripleChecker+Valid, 2072 SdHoareTripleChecker+Invalid, 1408 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:18,066 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [624 Valid, 2072 Invalid, 1408 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1288 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 09:55:18,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2024-11-16 09:55:18,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1665. [2024-11-16 09:55:18,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1665 states, 1381 states have (on average 1.3012309920347573) internal successors, (1797), 1405 states have internal predecessors, (1797), 146 states have call successors, (146), 112 states have call predecessors, (146), 136 states have return successors, (188), 150 states have call predecessors, (188), 142 states have call successors, (188) [2024-11-16 09:55:18,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1665 states to 1665 states and 2131 transitions. [2024-11-16 09:55:18,199 INFO L78 Accepts]: Start accepts. Automaton has 1665 states and 2131 transitions. Word has length 72 [2024-11-16 09:55:18,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:18,201 INFO L471 AbstractCegarLoop]: Abstraction has 1665 states and 2131 transitions. [2024-11-16 09:55:18,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:55:18,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1665 states and 2131 transitions. [2024-11-16 09:55:18,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 09:55:18,203 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:18,203 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] [2024-11-16 09:55:18,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 09:55:18,206 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:18,207 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:18,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1818731318, now seen corresponding path program 1 times [2024-11-16 09:55:18,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:18,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451814479] [2024-11-16 09:55:18,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:18,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:18,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:18,302 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:18,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:18,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:55:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:18,348 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:55:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:18,358 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:55:18,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:18,360 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:55:18,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:18,363 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:55:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:18,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:55:18,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:18,390 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:18,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:18,391 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451814479] [2024-11-16 09:55:18,391 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451814479] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:18,391 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:18,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 09:55:18,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401890524] [2024-11-16 09:55:18,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:18,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 09:55:18,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:18,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 09:55:18,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:55:18,394 INFO L87 Difference]: Start difference. First operand 1665 states and 2131 transitions. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-16 09:55:19,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:19,503 INFO L93 Difference]: Finished difference Result 3053 states and 3811 transitions. [2024-11-16 09:55:19,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-16 09:55:19,504 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2024-11-16 09:55:19,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:19,516 INFO L225 Difference]: With dead ends: 3053 [2024-11-16 09:55:19,516 INFO L226 Difference]: Without dead ends: 1921 [2024-11-16 09:55:19,519 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2024-11-16 09:55:19,520 INFO L432 NwaCegarLoop]: 314 mSDtfsCounter, 1250 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 1097 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 1270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 1097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:19,520 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 1469 Invalid, 1270 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 1097 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-16 09:55:19,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2024-11-16 09:55:19,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1599. [2024-11-16 09:55:19,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1599 states, 1331 states have (on average 1.2982719759579264) internal successors, (1728), 1350 states have internal predecessors, (1728), 140 states have call successors, (140), 107 states have call predecessors, (140), 126 states have return successors, (173), 143 states have call predecessors, (173), 136 states have call successors, (173) [2024-11-16 09:55:19,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 2041 transitions. [2024-11-16 09:55:19,658 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 2041 transitions. Word has length 72 [2024-11-16 09:55:19,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:19,659 INFO L471 AbstractCegarLoop]: Abstraction has 1599 states and 2041 transitions. [2024-11-16 09:55:19,660 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-16 09:55:19,660 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 2041 transitions. [2024-11-16 09:55:19,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-16 09:55:19,661 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:19,661 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] [2024-11-16 09:55:19,661 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 09:55:19,661 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:19,661 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:19,661 INFO L85 PathProgramCache]: Analyzing trace with hash -1467931381, now seen corresponding path program 1 times [2024-11-16 09:55:19,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:19,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [942602977] [2024-11-16 09:55:19,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:19,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:19,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:19,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:19,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:19,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:55:19,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:19,736 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:55:19,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:19,760 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:55:19,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:19,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:55:19,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:19,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:55:19,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:19,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:55:19,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:19,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:19,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:19,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [942602977] [2024-11-16 09:55:19,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [942602977] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:19,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:19,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:55:19,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497777151] [2024-11-16 09:55:19,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:19,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:55:19,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:19,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:55:19,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:55:19,774 INFO L87 Difference]: Start difference. First operand 1599 states and 2041 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-16 09:55:20,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:20,556 INFO L93 Difference]: Finished difference Result 4198 states and 5261 transitions. [2024-11-16 09:55:20,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 09:55:20,557 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2024-11-16 09:55:20,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:20,571 INFO L225 Difference]: With dead ends: 4198 [2024-11-16 09:55:20,572 INFO L226 Difference]: Without dead ends: 2877 [2024-11-16 09:55:20,575 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2024-11-16 09:55:20,576 INFO L432 NwaCegarLoop]: 308 mSDtfsCounter, 1226 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1252 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:20,579 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1252 Valid, 1172 Invalid, 646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 09:55:20,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2877 states. [2024-11-16 09:55:20,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2877 to 2756. [2024-11-16 09:55:20,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2756 states, 2245 states have (on average 1.2530066815144767) internal successors, (2813), 2281 states have internal predecessors, (2813), 259 states have call successors, (259), 206 states have call predecessors, (259), 250 states have return successors, (364), 271 states have call predecessors, (364), 255 states have call successors, (364) [2024-11-16 09:55:20,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2756 states to 2756 states and 3436 transitions. [2024-11-16 09:55:20,812 INFO L78 Accepts]: Start accepts. Automaton has 2756 states and 3436 transitions. Word has length 72 [2024-11-16 09:55:20,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:20,812 INFO L471 AbstractCegarLoop]: Abstraction has 2756 states and 3436 transitions. [2024-11-16 09:55:20,812 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-16 09:55:20,812 INFO L276 IsEmpty]: Start isEmpty. Operand 2756 states and 3436 transitions. [2024-11-16 09:55:20,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-16 09:55:20,813 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:20,814 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] [2024-11-16 09:55:20,814 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-16 09:55:20,814 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:20,814 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:20,814 INFO L85 PathProgramCache]: Analyzing trace with hash -1761853930, now seen corresponding path program 1 times [2024-11-16 09:55:20,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:20,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551147671] [2024-11-16 09:55:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:20,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:20,860 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:20,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:55:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:20,879 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:55:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:20,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:55:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:20,886 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:55:20,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:20,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:55:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:20,893 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:55:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:20,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:20,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:20,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551147671] [2024-11-16 09:55:20,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551147671] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:20,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:20,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:55:20,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224827422] [2024-11-16 09:55:20,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:20,897 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:55:20,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:20,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:55:20,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:55:20,898 INFO L87 Difference]: Start difference. First operand 2756 states and 3436 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:55:21,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:21,647 INFO L93 Difference]: Finished difference Result 6445 states and 7954 transitions. [2024-11-16 09:55:21,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 09:55:21,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2024-11-16 09:55:21,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:21,668 INFO L225 Difference]: With dead ends: 6445 [2024-11-16 09:55:21,669 INFO L226 Difference]: Without dead ends: 3972 [2024-11-16 09:55:21,676 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:55:21,676 INFO L432 NwaCegarLoop]: 334 mSDtfsCounter, 607 mSDsluCounter, 1072 mSDsCounter, 0 mSdLazyCounter, 616 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 615 SdHoareTripleChecker+Valid, 1406 SdHoareTripleChecker+Invalid, 729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 616 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:21,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [615 Valid, 1406 Invalid, 729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 616 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 09:55:21,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3972 states. [2024-11-16 09:55:21,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3972 to 3676. [2024-11-16 09:55:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 2979 states have (on average 1.2400134273246055) internal successors, (3694), 3020 states have internal predecessors, (3694), 351 states have call successors, (351), 286 states have call predecessors, (351), 344 states have return successors, (478), 372 states have call predecessors, (478), 347 states have call successors, (478) [2024-11-16 09:55:21,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 4523 transitions. [2024-11-16 09:55:21,951 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 4523 transitions. Word has length 73 [2024-11-16 09:55:21,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:21,951 INFO L471 AbstractCegarLoop]: Abstraction has 3676 states and 4523 transitions. [2024-11-16 09:55:21,951 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:55:21,952 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 4523 transitions. [2024-11-16 09:55:21,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-11-16 09:55:21,953 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:21,953 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] [2024-11-16 09:55:21,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-16 09:55:21,953 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:21,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:21,954 INFO L85 PathProgramCache]: Analyzing trace with hash -1104951968, now seen corresponding path program 1 times [2024-11-16 09:55:21,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:21,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187512972] [2024-11-16 09:55:21,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:21,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:22,018 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:22,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:22,027 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:55:22,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:22,038 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:55:22,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:22,043 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:55:22,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:22,045 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:55:22,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:22,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:55:22,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:22,051 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:55:22,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:22,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:22,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:22,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187512972] [2024-11-16 09:55:22,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187512972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:22,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:22,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:55:22,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917078897] [2024-11-16 09:55:22,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:22,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:55:22,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:22,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:55:22,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:55:22,059 INFO L87 Difference]: Start difference. First operand 3676 states and 4523 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:55:22,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:22,896 INFO L93 Difference]: Finished difference Result 8003 states and 9752 transitions. [2024-11-16 09:55:22,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 09:55:22,896 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 83 [2024-11-16 09:55:22,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:22,920 INFO L225 Difference]: With dead ends: 8003 [2024-11-16 09:55:22,920 INFO L226 Difference]: Without dead ends: 4608 [2024-11-16 09:55:22,927 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:55:22,928 INFO L432 NwaCegarLoop]: 347 mSDtfsCounter, 1190 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1218 SdHoareTripleChecker+Valid, 957 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:22,929 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1218 Valid, 957 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 418 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-16 09:55:22,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4608 states. [2024-11-16 09:55:23,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4608 to 4288. [2024-11-16 09:55:23,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4288 states, 3477 states have (on average 1.2343974690825423) internal successors, (4292), 3522 states have internal predecessors, (4292), 407 states have call successors, (407), 336 states have call predecessors, (407), 402 states have return successors, (551), 432 states have call predecessors, (551), 403 states have call successors, (551) [2024-11-16 09:55:23,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4288 states to 4288 states and 5250 transitions. [2024-11-16 09:55:23,352 INFO L78 Accepts]: Start accepts. Automaton has 4288 states and 5250 transitions. Word has length 83 [2024-11-16 09:55:23,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:23,353 INFO L471 AbstractCegarLoop]: Abstraction has 4288 states and 5250 transitions. [2024-11-16 09:55:23,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 3 states have internal predecessors, (68), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-16 09:55:23,353 INFO L276 IsEmpty]: Start isEmpty. Operand 4288 states and 5250 transitions. [2024-11-16 09:55:23,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2024-11-16 09:55:23,355 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:23,355 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:55:23,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 09:55:23,355 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:23,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:23,356 INFO L85 PathProgramCache]: Analyzing trace with hash 859380219, now seen corresponding path program 1 times [2024-11-16 09:55:23,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:23,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496445100] [2024-11-16 09:55:23,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:23,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:23,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:23,443 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:23,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:23,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:55:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:23,462 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:55:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:23,467 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:55:23,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:23,469 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:55:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:23,471 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:55:23,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:23,473 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:55:23,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:23,475 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:23,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:23,475 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496445100] [2024-11-16 09:55:23,475 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496445100] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:23,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:23,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:55:23,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137344957] [2024-11-16 09:55:23,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:23,476 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:55:23,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:23,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:55:23,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:55:23,477 INFO L87 Difference]: Start difference. First operand 4288 states and 5250 transitions. Second operand has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 09:55:24,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:24,475 INFO L93 Difference]: Finished difference Result 5433 states and 6604 transitions. [2024-11-16 09:55:24,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-16 09:55:24,476 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 86 [2024-11-16 09:55:24,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:24,499 INFO L225 Difference]: With dead ends: 5433 [2024-11-16 09:55:24,500 INFO L226 Difference]: Without dead ends: 5429 [2024-11-16 09:55:24,501 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2024-11-16 09:55:24,502 INFO L432 NwaCegarLoop]: 341 mSDtfsCounter, 1479 mSDsluCounter, 870 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1489 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:24,502 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1489 Valid, 1211 Invalid, 742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 09:55:24,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5429 states. [2024-11-16 09:55:24,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5429 to 4780. [2024-11-16 09:55:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4780 states, 3862 states have (on average 1.2268254790264113) internal successors, (4738), 3910 states have internal predecessors, (4738), 457 states have call successors, (457), 380 states have call predecessors, (457), 459 states have return successors, (628), 492 states have call predecessors, (628), 454 states have call successors, (628) [2024-11-16 09:55:24,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4780 states to 4780 states and 5823 transitions. [2024-11-16 09:55:24,898 INFO L78 Accepts]: Start accepts. Automaton has 4780 states and 5823 transitions. Word has length 86 [2024-11-16 09:55:24,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:24,898 INFO L471 AbstractCegarLoop]: Abstraction has 4780 states and 5823 transitions. [2024-11-16 09:55:24,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.142857142857142) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 09:55:24,899 INFO L276 IsEmpty]: Start isEmpty. Operand 4780 states and 5823 transitions. [2024-11-16 09:55:24,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-16 09:55:24,900 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:24,901 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:55:24,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-16 09:55:24,901 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:24,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:24,902 INFO L85 PathProgramCache]: Analyzing trace with hash 855750815, now seen corresponding path program 1 times [2024-11-16 09:55:24,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:24,902 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052626781] [2024-11-16 09:55:24,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:24,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:24,999 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:25,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:25,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:55:25,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:25,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:55:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:25,034 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:55:25,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:25,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:55:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:25,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:55:25,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:25,042 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:55:25,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:25,048 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:25,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:25,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052626781] [2024-11-16 09:55:25,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052626781] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 09:55:25,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464842695] [2024-11-16 09:55:25,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:25,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 09:55:25,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 09:55:25,051 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 09:55:25,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 09:55:25,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:25,163 INFO L255 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-16 09:55:25,170 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 09:55:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:25,480 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 09:55:25,593 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:25,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [464842695] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 09:55:25,594 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 09:55:25,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2024-11-16 09:55:25,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226580399] [2024-11-16 09:55:25,594 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 09:55:25,595 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-16 09:55:25,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:25,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-16 09:55:25,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-11-16 09:55:25,596 INFO L87 Difference]: Start difference. First operand 4780 states and 5823 transitions. Second operand has 10 states, 10 states have (on average 14.5) internal successors, (145), 7 states have internal predecessors, (145), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-16 09:55:27,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:27,623 INFO L93 Difference]: Finished difference Result 9486 states and 11420 transitions. [2024-11-16 09:55:27,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 09:55:27,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 7 states have internal predecessors, (145), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 87 [2024-11-16 09:55:27,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:27,679 INFO L225 Difference]: With dead ends: 9486 [2024-11-16 09:55:27,680 INFO L226 Difference]: Without dead ends: 9482 [2024-11-16 09:55:27,686 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2024-11-16 09:55:27,687 INFO L432 NwaCegarLoop]: 443 mSDtfsCounter, 1488 mSDsluCounter, 1873 mSDsCounter, 0 mSdLazyCounter, 1593 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1546 SdHoareTripleChecker+Valid, 2316 SdHoareTripleChecker+Invalid, 1760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:27,688 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1546 Valid, 2316 Invalid, 1760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1593 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-16 09:55:27,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9482 states. [2024-11-16 09:55:28,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9482 to 8526. [2024-11-16 09:55:28,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8526 states, 6866 states have (on average 1.2161374890766095) internal successors, (8350), 6949 states have internal predecessors, (8350), 816 states have call successors, (816), 694 states have call predecessors, (816), 842 states have return successors, (1129), 885 states have call predecessors, (1129), 813 states have call successors, (1129) [2024-11-16 09:55:28,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8526 states to 8526 states and 10295 transitions. [2024-11-16 09:55:28,497 INFO L78 Accepts]: Start accepts. Automaton has 8526 states and 10295 transitions. Word has length 87 [2024-11-16 09:55:28,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:28,498 INFO L471 AbstractCegarLoop]: Abstraction has 8526 states and 10295 transitions. [2024-11-16 09:55:28,498 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 14.5) internal successors, (145), 7 states have internal predecessors, (145), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-16 09:55:28,498 INFO L276 IsEmpty]: Start isEmpty. Operand 8526 states and 10295 transitions. [2024-11-16 09:55:28,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-16 09:55:28,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:28,500 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:55:28,525 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 09:55:28,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-11-16 09:55:28,701 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:28,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:28,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1204309031, now seen corresponding path program 2 times [2024-11-16 09:55:28,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:28,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129562012] [2024-11-16 09:55:28,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:28,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:28,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:28,740 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:28,748 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:55:28,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:28,758 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:55:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:28,762 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:55:28,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:28,763 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:55:28,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:28,765 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:55:28,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:28,766 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:55:28,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:28,769 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:28,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:28,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129562012] [2024-11-16 09:55:28,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129562012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:28,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:28,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:55:28,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046481735] [2024-11-16 09:55:28,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:28,770 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:55:28,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:28,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:55:28,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:55:28,772 INFO L87 Difference]: Start difference. First operand 8526 states and 10295 transitions. Second operand has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 09:55:29,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:29,741 INFO L93 Difference]: Finished difference Result 11412 states and 13796 transitions. [2024-11-16 09:55:29,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-16 09:55:29,742 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 92 [2024-11-16 09:55:29,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:29,761 INFO L225 Difference]: With dead ends: 11412 [2024-11-16 09:55:29,762 INFO L226 Difference]: Without dead ends: 4626 [2024-11-16 09:55:29,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-16 09:55:29,780 INFO L432 NwaCegarLoop]: 374 mSDtfsCounter, 1101 mSDsluCounter, 649 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1131 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:29,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1131 Valid, 1023 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-16 09:55:29,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4626 states. [2024-11-16 09:55:30,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4626 to 3492. [2024-11-16 09:55:30,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3492 states, 2838 states have (on average 1.2174066243833686) internal successors, (3455), 2867 states have internal predecessors, (3455), 335 states have call successors, (335), 276 states have call predecessors, (335), 317 states have return successors, (428), 351 states have call predecessors, (428), 332 states have call successors, (428) [2024-11-16 09:55:30,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3492 states to 3492 states and 4218 transitions. [2024-11-16 09:55:30,201 INFO L78 Accepts]: Start accepts. Automaton has 3492 states and 4218 transitions. Word has length 92 [2024-11-16 09:55:30,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:30,201 INFO L471 AbstractCegarLoop]: Abstraction has 3492 states and 4218 transitions. [2024-11-16 09:55:30,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.833333333333334) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-16 09:55:30,202 INFO L276 IsEmpty]: Start isEmpty. Operand 3492 states and 4218 transitions. [2024-11-16 09:55:30,205 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-16 09:55:30,205 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:30,206 INFO L215 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:55:30,206 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-16 09:55:30,206 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:30,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:30,207 INFO L85 PathProgramCache]: Analyzing trace with hash -1402276551, now seen corresponding path program 1 times [2024-11-16 09:55:30,207 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:30,207 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436371761] [2024-11-16 09:55:30,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:30,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:30,292 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:30,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:30,315 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:55:30,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:30,325 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:55:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:30,329 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:55:30,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:30,331 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:55:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:30,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:55:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:30,335 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:55:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:30,338 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2024-11-16 09:55:30,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:30,345 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-16 09:55:30,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:30,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436371761] [2024-11-16 09:55:30,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436371761] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:30,346 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:30,346 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-16 09:55:30,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598357168] [2024-11-16 09:55:30,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:30,347 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 09:55:30,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:30,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 09:55:30,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-16 09:55:30,348 INFO L87 Difference]: Start difference. First operand 3492 states and 4218 transitions. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-16 09:55:31,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:31,498 INFO L93 Difference]: Finished difference Result 9816 states and 11749 transitions. [2024-11-16 09:55:31,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-16 09:55:31,498 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 94 [2024-11-16 09:55:31,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:31,519 INFO L225 Difference]: With dead ends: 9816 [2024-11-16 09:55:31,519 INFO L226 Difference]: Without dead ends: 5737 [2024-11-16 09:55:31,530 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2024-11-16 09:55:31,531 INFO L432 NwaCegarLoop]: 352 mSDtfsCounter, 1205 mSDsluCounter, 1480 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 234 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 1160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 234 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:31,531 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 1832 Invalid, 1160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [234 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-16 09:55:31,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5737 states. [2024-11-16 09:55:32,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5737 to 5472. [2024-11-16 09:55:32,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5472 states, 4383 states have (on average 1.191193246634725) internal successors, (5221), 4449 states have internal predecessors, (5221), 535 states have call successors, (535), 448 states have call predecessors, (535), 552 states have return successors, (778), 577 states have call predecessors, (778), 532 states have call successors, (778) [2024-11-16 09:55:32,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 6534 transitions. [2024-11-16 09:55:32,045 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 6534 transitions. Word has length 94 [2024-11-16 09:55:32,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:32,046 INFO L471 AbstractCegarLoop]: Abstraction has 5472 states and 6534 transitions. [2024-11-16 09:55:32,046 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 5 states have internal predecessors, (73), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-16 09:55:32,046 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 6534 transitions. [2024-11-16 09:55:32,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2024-11-16 09:55:32,049 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:32,050 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 09:55:32,050 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-16 09:55:32,050 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:32,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:32,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1862458189, now seen corresponding path program 1 times [2024-11-16 09:55:32,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:32,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [513623106] [2024-11-16 09:55:32,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:32,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:32,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:32,136 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:32,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2024-11-16 09:55:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:32,161 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2024-11-16 09:55:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:32,165 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2024-11-16 09:55:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:32,166 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-16 09:55:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:32,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2024-11-16 09:55:32,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:32,169 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 09:55:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:32,171 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:55:32,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:32,180 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-16 09:55:32,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:32,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [513623106] [2024-11-16 09:55:32,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [513623106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:32,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:32,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-16 09:55:32,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418888128] [2024-11-16 09:55:32,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:32,181 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 09:55:32,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:32,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 09:55:32,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-16 09:55:32,182 INFO L87 Difference]: Start difference. First operand 5472 states and 6534 transitions. Second operand has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-16 09:55:33,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:33,638 INFO L93 Difference]: Finished difference Result 9143 states and 10863 transitions. [2024-11-16 09:55:33,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-16 09:55:33,639 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 112 [2024-11-16 09:55:33,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:33,659 INFO L225 Difference]: With dead ends: 9143 [2024-11-16 09:55:33,659 INFO L226 Difference]: Without dead ends: 4517 [2024-11-16 09:55:33,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 152 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2024-11-16 09:55:33,671 INFO L432 NwaCegarLoop]: 350 mSDtfsCounter, 1917 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1950 SdHoareTripleChecker+Valid, 1880 SdHoareTripleChecker+Invalid, 1539 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:33,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1950 Valid, 1880 Invalid, 1539 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 09:55:33,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4517 states. [2024-11-16 09:55:34,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4517 to 4071. [2024-11-16 09:55:34,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4071 states, 3248 states have (on average 1.1804187192118227) internal successors, (3834), 3302 states have internal predecessors, (3834), 400 states have call successors, (400), 330 states have call predecessors, (400), 421 states have return successors, (547), 441 states have call predecessors, (547), 397 states have call successors, (547) [2024-11-16 09:55:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4071 states to 4071 states and 4781 transitions. [2024-11-16 09:55:34,210 INFO L78 Accepts]: Start accepts. Automaton has 4071 states and 4781 transitions. Word has length 112 [2024-11-16 09:55:34,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:34,211 INFO L471 AbstractCegarLoop]: Abstraction has 4071 states and 4781 transitions. [2024-11-16 09:55:34,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.11111111111111) internal successors, (91), 6 states have internal predecessors, (91), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-16 09:55:34,211 INFO L276 IsEmpty]: Start isEmpty. Operand 4071 states and 4781 transitions. [2024-11-16 09:55:34,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-16 09:55:34,214 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:34,214 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] [2024-11-16 09:55:34,214 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-16 09:55:34,215 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:34,215 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:34,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1359843336, now seen corresponding path program 1 times [2024-11-16 09:55:34,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:34,216 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190664448] [2024-11-16 09:55:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:34,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:34,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:34,278 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:34,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:34,314 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:55:34,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:34,356 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:55:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:34,369 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:55:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:34,378 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:55:34,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:34,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:34,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:34,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190664448] [2024-11-16 09:55:34,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190664448] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:34,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:34,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-16 09:55:34,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754568670] [2024-11-16 09:55:34,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:34,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-16 09:55:34,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:34,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-16 09:55:34,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-16 09:55:34,385 INFO L87 Difference]: Start difference. First operand 4071 states and 4781 transitions. Second operand has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-16 09:55:36,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:36,171 INFO L93 Difference]: Finished difference Result 4737 states and 5800 transitions. [2024-11-16 09:55:36,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-16 09:55:36,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 4 states have internal predecessors, (107), 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 118 [2024-11-16 09:55:36,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:36,186 INFO L225 Difference]: With dead ends: 4737 [2024-11-16 09:55:36,187 INFO L226 Difference]: Without dead ends: 4483 [2024-11-16 09:55:36,189 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-16 09:55:36,190 INFO L432 NwaCegarLoop]: 315 mSDtfsCounter, 1158 mSDsluCounter, 936 mSDsCounter, 0 mSdLazyCounter, 1429 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1181 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:36,190 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1181 Valid, 1251 Invalid, 1555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1429 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-16 09:55:36,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4483 states. [2024-11-16 09:55:36,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4483 to 4329. [2024-11-16 09:55:36,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4329 states, 3484 states have (on average 1.2017795637198623) internal successors, (4187), 3539 states have internal predecessors, (4187), 415 states have call successors, (415), 336 states have call predecessors, (415), 428 states have return successors, (565), 456 states have call predecessors, (565), 412 states have call successors, (565) [2024-11-16 09:55:36,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4329 states to 4329 states and 5167 transitions. [2024-11-16 09:55:36,899 INFO L78 Accepts]: Start accepts. Automaton has 4329 states and 5167 transitions. Word has length 118 [2024-11-16 09:55:36,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:36,901 INFO L471 AbstractCegarLoop]: Abstraction has 4329 states and 5167 transitions. [2024-11-16 09:55:36,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.833333333333332) internal successors, (107), 4 states have internal predecessors, (107), 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) [2024-11-16 09:55:36,901 INFO L276 IsEmpty]: Start isEmpty. Operand 4329 states and 5167 transitions. [2024-11-16 09:55:36,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-16 09:55:36,904 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:36,904 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] [2024-11-16 09:55:36,904 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-16 09:55:36,905 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:36,905 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:36,905 INFO L85 PathProgramCache]: Analyzing trace with hash -788614470, now seen corresponding path program 1 times [2024-11-16 09:55:36,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:36,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086423898] [2024-11-16 09:55:36,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:36,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:36,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:36,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:36,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:37,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:55:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:37,064 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:55:37,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:37,074 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:55:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:37,079 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:55:37,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:37,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:37,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:37,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086423898] [2024-11-16 09:55:37,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086423898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:37,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:37,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:55:37,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167330665] [2024-11-16 09:55:37,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:37,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:55:37,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:37,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:55:37,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:55:37,083 INFO L87 Difference]: Start difference. First operand 4329 states and 5167 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:55:39,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:39,640 INFO L93 Difference]: Finished difference Result 5336 states and 6706 transitions. [2024-11-16 09:55:39,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:55:39,641 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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 118 [2024-11-16 09:55:39,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:39,657 INFO L225 Difference]: With dead ends: 5336 [2024-11-16 09:55:39,658 INFO L226 Difference]: Without dead ends: 4824 [2024-11-16 09:55:39,661 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 [2024-11-16 09:55:39,662 INFO L432 NwaCegarLoop]: 501 mSDtfsCounter, 1163 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 2275 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1186 SdHoareTripleChecker+Valid, 2252 SdHoareTripleChecker+Invalid, 2362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 2275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:39,662 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1186 Valid, 2252 Invalid, 2362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 2275 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 09:55:39,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4824 states. [2024-11-16 09:55:40,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4824 to 4572. [2024-11-16 09:55:40,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4572 states, 3705 states have (on average 1.2172739541160593) internal successors, (4510), 3761 states have internal predecessors, (4510), 430 states have call successors, (430), 342 states have call predecessors, (430), 435 states have return successors, (582), 472 states have call predecessors, (582), 427 states have call successors, (582) [2024-11-16 09:55:40,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4572 states to 4572 states and 5522 transitions. [2024-11-16 09:55:40,542 INFO L78 Accepts]: Start accepts. Automaton has 4572 states and 5522 transitions. Word has length 118 [2024-11-16 09:55:40,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:40,542 INFO L471 AbstractCegarLoop]: Abstraction has 4572 states and 5522 transitions. [2024-11-16 09:55:40,543 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:55:40,543 INFO L276 IsEmpty]: Start isEmpty. Operand 4572 states and 5522 transitions. [2024-11-16 09:55:40,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-16 09:55:40,546 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:40,546 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] [2024-11-16 09:55:40,547 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-16 09:55:40,547 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:40,547 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:40,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1987349735, now seen corresponding path program 1 times [2024-11-16 09:55:40,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:40,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153615724] [2024-11-16 09:55:40,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:40,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:40,632 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:40,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:40,669 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:55:40,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:40,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:55:40,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:40,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:55:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:40,739 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:55:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:40,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:40,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:40,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153615724] [2024-11-16 09:55:40,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153615724] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:40,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:40,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:55:40,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [826367056] [2024-11-16 09:55:40,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:40,743 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:55:40,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:40,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:55:40,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:55:40,743 INFO L87 Difference]: Start difference. First operand 4572 states and 5522 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:55:43,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:43,133 INFO L93 Difference]: Finished difference Result 6220 states and 8035 transitions. [2024-11-16 09:55:43,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:55:43,134 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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 118 [2024-11-16 09:55:43,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:43,153 INFO L225 Difference]: With dead ends: 6220 [2024-11-16 09:55:43,153 INFO L226 Difference]: Without dead ends: 5465 [2024-11-16 09:55:43,159 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 [2024-11-16 09:55:43,159 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 1161 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1184 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 2360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:43,160 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1184 Valid, 2250 Invalid, 2360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 09:55:43,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5465 states. [2024-11-16 09:55:43,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5465 to 5059. [2024-11-16 09:55:43,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5059 states, 4148 states have (on average 1.2432497589199614) internal successors, (5157), 4206 states have internal predecessors, (5157), 460 states have call successors, (460), 354 states have call predecessors, (460), 449 states have return successors, (620), 504 states have call predecessors, (620), 457 states have call successors, (620) [2024-11-16 09:55:43,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5059 states to 5059 states and 6237 transitions. [2024-11-16 09:55:43,953 INFO L78 Accepts]: Start accepts. Automaton has 5059 states and 6237 transitions. Word has length 118 [2024-11-16 09:55:43,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:43,953 INFO L471 AbstractCegarLoop]: Abstraction has 5059 states and 6237 transitions. [2024-11-16 09:55:43,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:55:43,954 INFO L276 IsEmpty]: Start isEmpty. Operand 5059 states and 6237 transitions. [2024-11-16 09:55:43,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-16 09:55:43,957 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:43,957 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] [2024-11-16 09:55:43,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-16 09:55:43,957 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:43,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:43,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1471829286, now seen corresponding path program 1 times [2024-11-16 09:55:43,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:43,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070585770] [2024-11-16 09:55:43,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:43,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:43,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:44,036 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:44,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:44,069 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:55:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:44,114 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:55:44,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:44,122 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:55:44,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:44,126 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:55:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:44,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:44,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070585770] [2024-11-16 09:55:44,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070585770] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:44,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:44,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:55:44,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115537684] [2024-11-16 09:55:44,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:44,129 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:55:44,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:44,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:55:44,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:55:44,130 INFO L87 Difference]: Start difference. First operand 5059 states and 6237 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:55:46,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:46,535 INFO L93 Difference]: Finished difference Result 7931 states and 10594 transitions. [2024-11-16 09:55:46,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:55:46,535 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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 118 [2024-11-16 09:55:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:46,558 INFO L225 Difference]: With dead ends: 7931 [2024-11-16 09:55:46,558 INFO L226 Difference]: Without dead ends: 6689 [2024-11-16 09:55:46,564 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 [2024-11-16 09:55:46,565 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 1157 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1180 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 2351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:46,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1180 Valid, 2250 Invalid, 2351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 09:55:46,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6689 states. [2024-11-16 09:55:47,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6689 to 6034. [2024-11-16 09:55:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6034 states, 5035 states have (on average 1.2812313803376365) internal successors, (6451), 5097 states have internal predecessors, (6451), 520 states have call successors, (520), 378 states have call predecessors, (520), 477 states have return successors, (702), 568 states have call predecessors, (702), 517 states have call successors, (702) [2024-11-16 09:55:47,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6034 states to 6034 states and 7673 transitions. [2024-11-16 09:55:47,198 INFO L78 Accepts]: Start accepts. Automaton has 6034 states and 7673 transitions. Word has length 118 [2024-11-16 09:55:47,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:47,199 INFO L471 AbstractCegarLoop]: Abstraction has 6034 states and 7673 transitions. [2024-11-16 09:55:47,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:55:47,199 INFO L276 IsEmpty]: Start isEmpty. Operand 6034 states and 7673 transitions. [2024-11-16 09:55:47,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-16 09:55:47,202 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:47,203 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] [2024-11-16 09:55:47,203 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-16 09:55:47,203 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:47,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:47,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1869936377, now seen corresponding path program 1 times [2024-11-16 09:55:47,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:47,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1909796436] [2024-11-16 09:55:47,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:47,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:47,262 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:47,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:47,295 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:55:47,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:47,376 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:55:47,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:47,387 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:55:47,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:47,392 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:55:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:47,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:47,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:47,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1909796436] [2024-11-16 09:55:47,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1909796436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:47,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:47,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:55:47,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859029023] [2024-11-16 09:55:47,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:47,396 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:55:47,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:47,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:55:47,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:55:47,397 INFO L87 Difference]: Start difference. First operand 6034 states and 7673 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:55:50,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:50,131 INFO L93 Difference]: Finished difference Result 11352 states and 15728 transitions. [2024-11-16 09:55:50,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 09:55:50,131 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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 118 [2024-11-16 09:55:50,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:50,164 INFO L225 Difference]: With dead ends: 11352 [2024-11-16 09:55:50,164 INFO L226 Difference]: Without dead ends: 9135 [2024-11-16 09:55:50,177 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 [2024-11-16 09:55:50,178 INFO L432 NwaCegarLoop]: 499 mSDtfsCounter, 1153 mSDsluCounter, 1751 mSDsCounter, 0 mSdLazyCounter, 2253 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 2342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:50,178 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 2250 Invalid, 2342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 2253 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-16 09:55:50,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9135 states. [2024-11-16 09:55:51,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9135 to 7989. [2024-11-16 09:55:51,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7989 states, 6814 states have (on average 1.3274141473437042) internal successors, (9045), 6884 states have internal predecessors, (9045), 640 states have call successors, (640), 426 states have call predecessors, (640), 533 states have return successors, (884), 696 states have call predecessors, (884), 637 states have call successors, (884) [2024-11-16 09:55:51,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7989 states to 7989 states and 10569 transitions. [2024-11-16 09:55:51,188 INFO L78 Accepts]: Start accepts. Automaton has 7989 states and 10569 transitions. Word has length 118 [2024-11-16 09:55:51,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:51,189 INFO L471 AbstractCegarLoop]: Abstraction has 7989 states and 10569 transitions. [2024-11-16 09:55:51,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:55:51,189 INFO L276 IsEmpty]: Start isEmpty. Operand 7989 states and 10569 transitions. [2024-11-16 09:55:51,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-16 09:55:51,195 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:51,195 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] [2024-11-16 09:55:51,195 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-16 09:55:51,195 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:51,195 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:51,196 INFO L85 PathProgramCache]: Analyzing trace with hash -1624495366, now seen corresponding path program 1 times [2024-11-16 09:55:51,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:51,197 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269585887] [2024-11-16 09:55:51,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:51,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:51,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:51,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:51,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:51,288 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:55:51,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:51,324 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:55:51,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:51,333 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:55:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:51,337 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:55:51,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:51,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:51,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:51,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269585887] [2024-11-16 09:55:51,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269585887] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:51,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:51,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:55:51,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625386423] [2024-11-16 09:55:51,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:51,342 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:55:51,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:51,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:55:51,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:55:51,343 INFO L87 Difference]: Start difference. First operand 7989 states and 10569 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:55:53,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:53,277 INFO L93 Difference]: Finished difference Result 13346 states and 18772 transitions. [2024-11-16 09:55:53,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:55:53,277 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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 118 [2024-11-16 09:55:53,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:53,303 INFO L225 Difference]: With dead ends: 13346 [2024-11-16 09:55:53,303 INFO L226 Difference]: Without dead ends: 9174 [2024-11-16 09:55:53,317 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 [2024-11-16 09:55:53,318 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 928 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 1185 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 952 SdHoareTripleChecker+Valid, 1282 SdHoareTripleChecker+Invalid, 1276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:53,318 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [952 Valid, 1282 Invalid, 1276 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1185 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-16 09:55:53,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9174 states. [2024-11-16 09:55:54,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9174 to 7989. [2024-11-16 09:55:54,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7989 states, 6814 states have (on average 1.3249192838274142) internal successors, (9028), 6884 states have internal predecessors, (9028), 640 states have call successors, (640), 426 states have call predecessors, (640), 533 states have return successors, (884), 696 states have call predecessors, (884), 637 states have call successors, (884) [2024-11-16 09:55:54,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7989 states to 7989 states and 10552 transitions. [2024-11-16 09:55:54,126 INFO L78 Accepts]: Start accepts. Automaton has 7989 states and 10552 transitions. Word has length 118 [2024-11-16 09:55:54,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:54,126 INFO L471 AbstractCegarLoop]: Abstraction has 7989 states and 10552 transitions. [2024-11-16 09:55:54,127 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:55:54,127 INFO L276 IsEmpty]: Start isEmpty. Operand 7989 states and 10552 transitions. [2024-11-16 09:55:54,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-16 09:55:54,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:54,131 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] [2024-11-16 09:55:54,132 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-16 09:55:54,132 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:54,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:54,132 INFO L85 PathProgramCache]: Analyzing trace with hash 2142106329, now seen corresponding path program 1 times [2024-11-16 09:55:54,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:54,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1319207042] [2024-11-16 09:55:54,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:54,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:54,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:54,180 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:54,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:54,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:55:54,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:54,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:55:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:54,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:55:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:54,268 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:55:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:54,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:54,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1319207042] [2024-11-16 09:55:54,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1319207042] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:54,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:54,279 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:55:54,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34476780] [2024-11-16 09:55:54,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:54,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:55:54,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:54,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:55:54,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:55:54,280 INFO L87 Difference]: Start difference. First operand 7989 states and 10552 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:55:55,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:55,781 INFO L93 Difference]: Finished difference Result 13328 states and 18686 transitions. [2024-11-16 09:55:55,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-16 09:55:55,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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 118 [2024-11-16 09:55:55,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:55,805 INFO L225 Difference]: With dead ends: 13328 [2024-11-16 09:55:55,806 INFO L226 Difference]: Without dead ends: 9156 [2024-11-16 09:55:55,817 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 [2024-11-16 09:55:55,818 INFO L432 NwaCegarLoop]: 300 mSDtfsCounter, 1074 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1065 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 1057 SdHoareTripleChecker+Invalid, 1193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1065 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:55,818 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 1057 Invalid, 1193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 1065 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-16 09:55:55,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9156 states. [2024-11-16 09:55:56,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9156 to 7989. [2024-11-16 09:55:56,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7989 states, 6814 states have (on average 1.3224244203111242) internal successors, (9011), 6884 states have internal predecessors, (9011), 640 states have call successors, (640), 426 states have call predecessors, (640), 533 states have return successors, (884), 696 states have call predecessors, (884), 637 states have call successors, (884) [2024-11-16 09:55:56,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7989 states to 7989 states and 10535 transitions. [2024-11-16 09:55:56,550 INFO L78 Accepts]: Start accepts. Automaton has 7989 states and 10535 transitions. Word has length 118 [2024-11-16 09:55:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:55:56,550 INFO L471 AbstractCegarLoop]: Abstraction has 7989 states and 10535 transitions. [2024-11-16 09:55:56,550 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:55:56,550 INFO L276 IsEmpty]: Start isEmpty. Operand 7989 states and 10535 transitions. [2024-11-16 09:55:56,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-16 09:55:56,555 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:55:56,555 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] [2024-11-16 09:55:56,555 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-16 09:55:56,555 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:55:56,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:55:56,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1477168358, now seen corresponding path program 1 times [2024-11-16 09:55:56,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:55:56,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393948063] [2024-11-16 09:55:56,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:55:56,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:55:56,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:56,611 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:55:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:56,643 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:55:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:56,686 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:55:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:56,694 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:55:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:56,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:55:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:55:56,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:55:56,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:55:56,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393948063] [2024-11-16 09:55:56,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393948063] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:55:56,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:55:56,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:55:56,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057335456] [2024-11-16 09:55:56,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:55:56,702 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:55:56,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:55:56,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:55:56,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:55:56,703 INFO L87 Difference]: Start difference. First operand 7989 states and 10535 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:55:59,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:55:59,686 INFO L93 Difference]: Finished difference Result 19642 states and 28054 transitions. [2024-11-16 09:55:59,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:55:59,687 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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 118 [2024-11-16 09:55:59,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:55:59,713 INFO L225 Difference]: With dead ends: 19642 [2024-11-16 09:55:59,713 INFO L226 Difference]: Without dead ends: 15470 [2024-11-16 09:55:59,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:55:59,720 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 1385 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 2189 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1415 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 2281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2189 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:55:59,721 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1415 Valid, 2240 Invalid, 2281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2189 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 09:55:59,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15470 states. [2024-11-16 09:56:00,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15470 to 11896. [2024-11-16 09:56:00,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11896 states, 10385 states have (on average 1.3661049590755898) internal successors, (14187), 10471 states have internal predecessors, (14187), 864 states have call successors, (864), 522 states have call predecessors, (864), 645 states have return successors, (1286), 936 states have call predecessors, (1286), 861 states have call successors, (1286) [2024-11-16 09:56:00,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11896 states to 11896 states and 16337 transitions. [2024-11-16 09:56:00,692 INFO L78 Accepts]: Start accepts. Automaton has 11896 states and 16337 transitions. Word has length 118 [2024-11-16 09:56:00,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:56:00,692 INFO L471 AbstractCegarLoop]: Abstraction has 11896 states and 16337 transitions. [2024-11-16 09:56:00,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:56:00,692 INFO L276 IsEmpty]: Start isEmpty. Operand 11896 states and 16337 transitions. [2024-11-16 09:56:00,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-16 09:56:00,701 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:56:00,701 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] [2024-11-16 09:56:00,701 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-16 09:56:00,701 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:56:00,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:56:00,702 INFO L85 PathProgramCache]: Analyzing trace with hash 2008311481, now seen corresponding path program 1 times [2024-11-16 09:56:00,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:56:00,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023626912] [2024-11-16 09:56:00,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:56:00,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:56:00,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:00,754 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:56:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:00,786 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:56:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:00,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:56:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:00,833 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:56:00,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:00,837 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:56:00,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:00,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:56:00,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:56:00,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023626912] [2024-11-16 09:56:00,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023626912] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:56:00,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:56:00,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:56:00,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625788968] [2024-11-16 09:56:00,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:56:00,839 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:56:00,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:56:00,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:56:00,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:56:00,840 INFO L87 Difference]: Start difference. First operand 11896 states and 16337 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:56:04,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:56:04,007 INFO L93 Difference]: Finished difference Result 34249 states and 50114 transitions. [2024-11-16 09:56:04,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:56:04,008 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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 118 [2024-11-16 09:56:04,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:56:04,064 INFO L225 Difference]: With dead ends: 34249 [2024-11-16 09:56:04,064 INFO L226 Difference]: Without dead ends: 26170 [2024-11-16 09:56:04,080 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:56:04,080 INFO L432 NwaCegarLoop]: 495 mSDtfsCounter, 1340 mSDsluCounter, 1736 mSDsCounter, 0 mSdLazyCounter, 2179 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1370 SdHoareTripleChecker+Valid, 2231 SdHoareTripleChecker+Invalid, 2271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:56:04,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1370 Valid, 2231 Invalid, 2271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2179 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 09:56:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26170 states. [2024-11-16 09:56:05,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26170 to 19240. [2024-11-16 09:56:05,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19240 states, 17073 states have (on average 1.3962982486967728) internal successors, (23839), 17191 states have internal predecessors, (23839), 1296 states have call successors, (1296), 714 states have call predecessors, (1296), 869 states have return successors, (2236), 1400 states have call predecessors, (2236), 1293 states have call successors, (2236) [2024-11-16 09:56:05,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19240 states to 19240 states and 27371 transitions. [2024-11-16 09:56:05,677 INFO L78 Accepts]: Start accepts. Automaton has 19240 states and 27371 transitions. Word has length 118 [2024-11-16 09:56:05,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:56:05,677 INFO L471 AbstractCegarLoop]: Abstraction has 19240 states and 27371 transitions. [2024-11-16 09:56:05,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:56:05,678 INFO L276 IsEmpty]: Start isEmpty. Operand 19240 states and 27371 transitions. [2024-11-16 09:56:05,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-16 09:56:05,688 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:56:05,688 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] [2024-11-16 09:56:05,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-16 09:56:05,688 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:56:05,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:56:05,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1566556986, now seen corresponding path program 1 times [2024-11-16 09:56:05,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:56:05,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619602838] [2024-11-16 09:56:05,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:56:05,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:56:05,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:05,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:56:05,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:05,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:56:05,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:05,814 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:56:05,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:05,822 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:56:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:05,826 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:56:05,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:05,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:56:05,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:56:05,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619602838] [2024-11-16 09:56:05,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [619602838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:56:05,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:56:05,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:56:05,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144260871] [2024-11-16 09:56:05,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:56:05,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:56:05,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:56:05,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:56:05,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:56:05,831 INFO L87 Difference]: Start difference. First operand 19240 states and 27371 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:56:10,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 09:56:10,201 INFO L93 Difference]: Finished difference Result 61619 states and 91882 transitions. [2024-11-16 09:56:10,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-16 09:56:10,201 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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 118 [2024-11-16 09:56:10,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 09:56:10,308 INFO L225 Difference]: With dead ends: 61619 [2024-11-16 09:56:10,308 INFO L226 Difference]: Without dead ends: 46196 [2024-11-16 09:56:10,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2024-11-16 09:56:10,346 INFO L432 NwaCegarLoop]: 497 mSDtfsCounter, 1299 mSDsluCounter, 1743 mSDsCounter, 0 mSdLazyCounter, 2171 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1329 SdHoareTripleChecker+Valid, 2240 SdHoareTripleChecker+Invalid, 2263 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 2171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-16 09:56:10,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1329 Valid, 2240 Invalid, 2263 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 2171 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-16 09:56:10,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46196 states. [2024-11-16 09:56:12,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46196 to 34342. [2024-11-16 09:56:12,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34342 states, 30895 states have (on average 1.4201327075578574) internal successors, (43875), 31077 states have internal predecessors, (43875), 2128 states have call successors, (2128), 1098 states have call predecessors, (2128), 1317 states have return successors, (4590), 2296 states have call predecessors, (4590), 2125 states have call successors, (4590) [2024-11-16 09:56:12,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34342 states to 34342 states and 50593 transitions. [2024-11-16 09:56:12,773 INFO L78 Accepts]: Start accepts. Automaton has 34342 states and 50593 transitions. Word has length 118 [2024-11-16 09:56:12,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 09:56:12,774 INFO L471 AbstractCegarLoop]: Abstraction has 34342 states and 50593 transitions. [2024-11-16 09:56:12,774 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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) [2024-11-16 09:56:12,774 INFO L276 IsEmpty]: Start isEmpty. Operand 34342 states and 50593 transitions. [2024-11-16 09:56:12,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2024-11-16 09:56:12,793 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 09:56:12,793 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] [2024-11-16 09:56:12,793 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-16 09:56:12,793 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 09:56:12,793 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 09:56:12,794 INFO L85 PathProgramCache]: Analyzing trace with hash 1552306841, now seen corresponding path program 1 times [2024-11-16 09:56:12,794 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 09:56:12,794 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [296753813] [2024-11-16 09:56:12,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 09:56:12,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 09:56:12,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:12,848 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 09:56:12,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:12,882 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2024-11-16 09:56:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:12,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2024-11-16 09:56:12,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:12,937 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2024-11-16 09:56:12,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:12,940 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2024-11-16 09:56:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 09:56:12,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 09:56:12,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 09:56:12,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [296753813] [2024-11-16 09:56:12,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [296753813] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 09:56:12,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 09:56:12,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-16 09:56:12,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282414245] [2024-11-16 09:56:12,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 09:56:12,944 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 09:56:12,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 09:56:12,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 09:56:12,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-16 09:56:12,945 INFO L87 Difference]: Start difference. First operand 34342 states and 50593 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 5 states have internal predecessors, (107), 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)