./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3061b6dc 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.05.cil-2.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 8b411c6ac71505d2c5059a06fd3211eebca89561d9ac8be37f9ecc9ff82a7a16 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-18 16:18:22,699 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-18 16:18:22,781 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-18 16:18:22,786 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-18 16:18:22,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-18 16:18:22,819 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-18 16:18:22,820 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-18 16:18:22,820 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-18 16:18:22,821 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-18 16:18:22,821 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-18 16:18:22,822 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-18 16:18:22,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-18 16:18:22,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-18 16:18:22,823 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-18 16:18:22,823 INFO L153 SettingsManager]: * Use SBE=true [2024-11-18 16:18:22,824 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-18 16:18:22,824 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-18 16:18:22,825 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-18 16:18:22,827 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-18 16:18:22,827 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-18 16:18:22,832 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-18 16:18:22,833 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-18 16:18:22,833 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-18 16:18:22,833 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-18 16:18:22,834 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-18 16:18:22,834 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-18 16:18:22,834 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-18 16:18:22,846 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-18 16:18:22,847 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-18 16:18:22,847 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-18 16:18:22,847 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-18 16:18:22,847 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-18 16:18:22,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:18:22,848 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-18 16:18:22,848 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-18 16:18:22,848 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-18 16:18:22,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-18 16:18:22,849 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-18 16:18:22,849 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-18 16:18:22,849 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-18 16:18:22,849 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-18 16:18:22,852 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-18 16:18:22,852 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8b411c6ac71505d2c5059a06fd3211eebca89561d9ac8be37f9ecc9ff82a7a16 [2024-11-18 16:18:23,127 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-18 16:18:23,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-18 16:18:23,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-18 16:18:23,158 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-18 16:18:23,159 INFO L274 PluginConnector]: CDTParser initialized [2024-11-18 16:18:23,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c [2024-11-18 16:18:24,722 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-18 16:18:24,954 INFO L384 CDTParser]: Found 1 translation units. [2024-11-18 16:18:24,955 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.05.cil-2.c [2024-11-18 16:18:24,970 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad8659a19/77ef262057d44f129143742f7659576e/FLAGaed19579a [2024-11-18 16:18:25,304 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ad8659a19/77ef262057d44f129143742f7659576e [2024-11-18 16:18:25,307 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-18 16:18:25,309 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-18 16:18:25,310 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-18 16:18:25,310 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-18 16:18:25,316 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-18 16:18:25,317 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:25,318 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@217e5484 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25, skipping insertion in model container [2024-11-18 16:18:25,318 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:25,376 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-18 16:18:25,572 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.05.cil-2.c[914,927] [2024-11-18 16:18:25,661 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.05.cil-2.c[7115,7128] [2024-11-18 16:18:25,759 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:18:25,779 INFO L200 MainTranslator]: Completed pre-run [2024-11-18 16:18:25,796 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.05.cil-2.c[914,927] [2024-11-18 16:18:25,815 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.05.cil-2.c[7115,7128] [2024-11-18 16:18:25,844 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-18 16:18:25,879 INFO L204 MainTranslator]: Completed translation [2024-11-18 16:18:25,880 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25 WrapperNode [2024-11-18 16:18:25,880 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-18 16:18:25,882 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-18 16:18:25,882 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-18 16:18:25,882 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-18 16:18:25,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:25,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:25,950 INFO L138 Inliner]: procedures = 63, calls = 73, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 654 [2024-11-18 16:18:25,951 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-18 16:18:25,952 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-18 16:18:25,952 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-18 16:18:25,952 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-18 16:18:25,965 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:25,965 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:25,973 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:25,995 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]. [2024-11-18 16:18:25,995 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:25,995 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:26,008 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:26,023 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:26,026 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:26,029 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:26,034 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-18 16:18:26,036 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-18 16:18:26,036 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-18 16:18:26,036 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-18 16:18:26,037 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25" (1/1) ... [2024-11-18 16:18:26,045 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-18 16:18:26,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:18:26,087 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) [2024-11-18 16:18:26,089 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 [2024-11-18 16:18:26,146 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-18 16:18:26,146 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2024-11-18 16:18:26,146 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2024-11-18 16:18:26,146 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2024-11-18 16:18:26,148 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2024-11-18 16:18:26,149 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2024-11-18 16:18:26,149 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2024-11-18 16:18:26,149 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2024-11-18 16:18:26,149 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2024-11-18 16:18:26,149 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2024-11-18 16:18:26,149 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2024-11-18 16:18:26,150 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2024-11-18 16:18:26,150 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2024-11-18 16:18:26,150 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2024-11-18 16:18:26,150 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2024-11-18 16:18:26,150 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2024-11-18 16:18:26,150 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2024-11-18 16:18:26,150 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2024-11-18 16:18:26,150 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2024-11-18 16:18:26,150 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2024-11-18 16:18:26,150 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2024-11-18 16:18:26,151 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2024-11-18 16:18:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2024-11-18 16:18:26,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-18 16:18:26,151 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2024-11-18 16:18:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2024-11-18 16:18:26,151 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2024-11-18 16:18:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2024-11-18 16:18:26,151 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-18 16:18:26,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-18 16:18:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2024-11-18 16:18:26,152 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2024-11-18 16:18:26,152 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2024-11-18 16:18:26,152 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2024-11-18 16:18:26,288 INFO L238 CfgBuilder]: Building ICFG [2024-11-18 16:18:26,291 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-18 16:18:27,077 INFO L? ?]: Removed 89 outVars from TransFormulas that were not future-live. [2024-11-18 16:18:27,077 INFO L287 CfgBuilder]: Performing block encoding [2024-11-18 16:18:27,111 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-18 16:18:27,111 INFO L316 CfgBuilder]: Removed 12 assume(true) statements. [2024-11-18 16:18:27,112 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:18:27 BoogieIcfgContainer [2024-11-18 16:18:27,112 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-18 16:18:27,116 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-18 16:18:27,117 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-18 16:18:27,121 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-18 16:18:27,121 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 04:18:25" (1/3) ... [2024-11-18 16:18:27,122 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d7ceb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:18:27, skipping insertion in model container [2024-11-18 16:18:27,122 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 04:18:25" (2/3) ... [2024-11-18 16:18:27,124 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33d7ceb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 04:18:27, skipping insertion in model container [2024-11-18 16:18:27,124 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 04:18:27" (3/3) ... [2024-11-18 16:18:27,126 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.05.cil-2.c [2024-11-18 16:18:27,146 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-18 16:18:27,147 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-18 16:18:27,238 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-18 16:18:27,246 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;@be7b5d3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-18 16:18:27,246 INFO L334 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2024-11-18 16:18:27,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 322 states, 269 states have (on average 1.5910780669144982) internal successors, (428), 277 states have internal predecessors, (428), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) [2024-11-18 16:18:27,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:27,263 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:27,263 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] [2024-11-18 16:18:27,264 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:27,268 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:27,268 INFO L85 PathProgramCache]: Analyzing trace with hash 367022757, now seen corresponding path program 1 times [2024-11-18 16:18:27,275 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:27,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467917004] [2024-11-18 16:18:27,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:27,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:27,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:27,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:27,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:27,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467917004] [2024-11-18 16:18:27,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467917004] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:27,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:27,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:18:27,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872947754] [2024-11-18 16:18:27,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:27,618 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:18:27,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:27,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:18:27,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:27,654 INFO L87 Difference]: Start difference. First operand has 322 states, 269 states have (on average 1.5910780669144982) internal successors, (428), 277 states have internal predecessors, (428), 35 states have call successors, (35), 15 states have call predecessors, (35), 15 states have return successors, (35), 33 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:27,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:27,766 INFO L93 Difference]: Finished difference Result 622 states and 961 transitions. [2024-11-18 16:18:27,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:18:27,774 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 2 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 65 [2024-11-18 16:18:27,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:27,787 INFO L225 Difference]: With dead ends: 622 [2024-11-18 16:18:27,788 INFO L226 Difference]: Without dead ends: 311 [2024-11-18 16:18:27,794 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:27,797 INFO L432 NwaCegarLoop]: 464 mSDtfsCounter, 130 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 795 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:27,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 795 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:27,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2024-11-18 16:18:27,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 311. [2024-11-18 16:18:27,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 311 states, 261 states have (on average 1.4980842911877394) internal successors, (391), 266 states have internal predecessors, (391), 35 states have call successors, (35), 15 states have call predecessors, (35), 13 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-18 16:18:27,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 457 transitions. [2024-11-18 16:18:27,875 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 457 transitions. Word has length 65 [2024-11-18 16:18:27,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:27,881 INFO L471 AbstractCegarLoop]: Abstraction has 311 states and 457 transitions. [2024-11-18 16:18:27,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.666666666666668) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:27,882 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 457 transitions. [2024-11-18 16:18:27,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:27,888 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:27,889 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] [2024-11-18 16:18:27,889 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-18 16:18:27,890 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:27,890 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:27,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1019762653, now seen corresponding path program 1 times [2024-11-18 16:18:27,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:27,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960309611] [2024-11-18 16:18:27,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:27,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:27,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:28,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:28,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:28,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960309611] [2024-11-18 16:18:28,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960309611] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:28,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:28,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:18:28,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652198015] [2024-11-18 16:18:28,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:28,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:18:28,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:28,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:18:28,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:28,193 INFO L87 Difference]: Start difference. First operand 311 states and 457 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:28,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:28,917 INFO L93 Difference]: Finished difference Result 502 states and 725 transitions. [2024-11-18 16:18:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:18:28,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 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 65 [2024-11-18 16:18:28,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:28,924 INFO L225 Difference]: With dead ends: 502 [2024-11-18 16:18:28,928 INFO L226 Difference]: Without dead ends: 414 [2024-11-18 16:18:28,930 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:28,931 INFO L432 NwaCegarLoop]: 292 mSDtfsCounter, 335 mSDsluCounter, 719 mSDsCounter, 0 mSdLazyCounter, 652 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 342 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:28,932 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [342 Valid, 1011 Invalid, 706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 652 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:18:28,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 414 states. [2024-11-18 16:18:28,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 414 to 407. [2024-11-18 16:18:28,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 407 states, 337 states have (on average 1.4688427299703264) internal successors, (495), 344 states have internal predecessors, (495), 46 states have call successors, (46), 22 states have call predecessors, (46), 22 states have return successors, (47), 43 states have call predecessors, (47), 42 states have call successors, (47) [2024-11-18 16:18:29,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 407 states to 407 states and 588 transitions. [2024-11-18 16:18:29,003 INFO L78 Accepts]: Start accepts. Automaton has 407 states and 588 transitions. Word has length 65 [2024-11-18 16:18:29,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:29,004 INFO L471 AbstractCegarLoop]: Abstraction has 407 states and 588 transitions. [2024-11-18 16:18:29,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:29,005 INFO L276 IsEmpty]: Start isEmpty. Operand 407 states and 588 transitions. [2024-11-18 16:18:29,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:29,011 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:29,011 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] [2024-11-18 16:18:29,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-18 16:18:29,013 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:29,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:29,014 INFO L85 PathProgramCache]: Analyzing trace with hash 659125987, now seen corresponding path program 1 times [2024-11-18 16:18:29,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:29,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [81235992] [2024-11-18 16:18:29,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:29,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:29,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:29,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:29,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [81235992] [2024-11-18 16:18:29,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [81235992] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:29,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:29,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:29,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833664983] [2024-11-18 16:18:29,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:29,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:29,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:29,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:29,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:29,318 INFO L87 Difference]: Start difference. First operand 407 states and 588 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:30,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:30,076 INFO L93 Difference]: Finished difference Result 724 states and 1018 transitions. [2024-11-18 16:18:30,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:30,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 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 65 [2024-11-18 16:18:30,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:30,082 INFO L225 Difference]: With dead ends: 724 [2024-11-18 16:18:30,082 INFO L226 Difference]: Without dead ends: 547 [2024-11-18 16:18:30,083 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:18:30,085 INFO L432 NwaCegarLoop]: 330 mSDtfsCounter, 646 mSDsluCounter, 916 mSDsCounter, 0 mSdLazyCounter, 915 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1246 SdHoareTripleChecker+Invalid, 974 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:30,086 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1246 Invalid, 974 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 915 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:18:30,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 547 states. [2024-11-18 16:18:30,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 547 to 503. [2024-11-18 16:18:30,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 413 states have (on average 1.4479418886198547) internal successors, (598), 422 states have internal predecessors, (598), 57 states have call successors, (57), 29 states have call predecessors, (57), 31 states have return successors, (66), 55 states have call predecessors, (66), 53 states have call successors, (66) [2024-11-18 16:18:30,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 721 transitions. [2024-11-18 16:18:30,143 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 721 transitions. Word has length 65 [2024-11-18 16:18:30,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:30,143 INFO L471 AbstractCegarLoop]: Abstraction has 503 states and 721 transitions. [2024-11-18 16:18:30,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:30,144 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 721 transitions. [2024-11-18 16:18:30,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:30,146 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:30,146 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] [2024-11-18 16:18:30,147 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-18 16:18:30,147 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:30,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:30,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1369460123, now seen corresponding path program 1 times [2024-11-18 16:18:30,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:30,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066783280] [2024-11-18 16:18:30,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:30,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:30,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:30,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:30,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:30,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066783280] [2024-11-18 16:18:30,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066783280] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:30,299 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:30,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:30,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467666093] [2024-11-18 16:18:30,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:30,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:30,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:30,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:30,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:30,308 INFO L87 Difference]: Start difference. First operand 503 states and 721 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:18:30,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:30,376 INFO L93 Difference]: Finished difference Result 775 states and 1094 transitions. [2024-11-18 16:18:30,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:18:30,377 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 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 65 [2024-11-18 16:18:30,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:30,380 INFO L225 Difference]: With dead ends: 775 [2024-11-18 16:18:30,381 INFO L226 Difference]: Without dead ends: 508 [2024-11-18 16:18:30,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:30,383 INFO L432 NwaCegarLoop]: 454 mSDtfsCounter, 0 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:30,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2265 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:30,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2024-11-18 16:18:30,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2024-11-18 16:18:30,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 417 states have (on average 1.4388489208633093) internal successors, (600), 426 states have internal predecessors, (600), 57 states have call successors, (57), 29 states have call predecessors, (57), 32 states have return successors, (67), 56 states have call predecessors, (67), 53 states have call successors, (67) [2024-11-18 16:18:30,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 724 transitions. [2024-11-18 16:18:30,453 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 724 transitions. Word has length 65 [2024-11-18 16:18:30,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:30,454 INFO L471 AbstractCegarLoop]: Abstraction has 508 states and 724 transitions. [2024-11-18 16:18:30,454 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:18:30,454 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 724 transitions. [2024-11-18 16:18:30,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:30,456 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:30,457 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] [2024-11-18 16:18:30,457 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-18 16:18:30,457 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:30,460 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:30,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1896147875, now seen corresponding path program 1 times [2024-11-18 16:18:30,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:30,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89972738] [2024-11-18 16:18:30,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:30,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:30,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:30,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:30,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:30,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89972738] [2024-11-18 16:18:30,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89972738] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:30,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:30,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:30,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971913622] [2024-11-18 16:18:30,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:30,543 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:30,543 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:30,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:30,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:30,545 INFO L87 Difference]: Start difference. First operand 508 states and 724 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:18:30,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:30,598 INFO L93 Difference]: Finished difference Result 795 states and 1112 transitions. [2024-11-18 16:18:30,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:18:30,599 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 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 65 [2024-11-18 16:18:30,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:30,603 INFO L225 Difference]: With dead ends: 795 [2024-11-18 16:18:30,603 INFO L226 Difference]: Without dead ends: 523 [2024-11-18 16:18:30,605 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:30,606 INFO L432 NwaCegarLoop]: 454 mSDtfsCounter, 0 mSDsluCounter, 1811 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2265 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:30,606 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2265 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:30,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523 states. [2024-11-18 16:18:30,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523 to 523. [2024-11-18 16:18:30,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523 states, 429 states have (on average 1.4265734265734267) internal successors, (612), 438 states have internal predecessors, (612), 57 states have call successors, (57), 29 states have call predecessors, (57), 35 states have return successors, (70), 59 states have call predecessors, (70), 53 states have call successors, (70) [2024-11-18 16:18:30,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523 states to 523 states and 739 transitions. [2024-11-18 16:18:30,650 INFO L78 Accepts]: Start accepts. Automaton has 523 states and 739 transitions. Word has length 65 [2024-11-18 16:18:30,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:30,650 INFO L471 AbstractCegarLoop]: Abstraction has 523 states and 739 transitions. [2024-11-18 16:18:30,651 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:18:30,651 INFO L276 IsEmpty]: Start isEmpty. Operand 523 states and 739 transitions. [2024-11-18 16:18:30,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:30,654 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:30,654 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] [2024-11-18 16:18:30,654 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-18 16:18:30,655 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:30,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:30,655 INFO L85 PathProgramCache]: Analyzing trace with hash -1012616027, now seen corresponding path program 1 times [2024-11-18 16:18:30,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:30,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512461226] [2024-11-18 16:18:30,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:30,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:30,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:30,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:30,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:30,836 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512461226] [2024-11-18 16:18:30,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512461226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:30,836 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:30,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:30,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583811330] [2024-11-18 16:18:30,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:30,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:30,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:30,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:30,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:30,838 INFO L87 Difference]: Start difference. First operand 523 states and 739 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:31,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:31,624 INFO L93 Difference]: Finished difference Result 894 states and 1220 transitions. [2024-11-18 16:18:31,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-18 16:18:31,624 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 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 65 [2024-11-18 16:18:31,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:31,630 INFO L225 Difference]: With dead ends: 894 [2024-11-18 16:18:31,630 INFO L226 Difference]: Without dead ends: 609 [2024-11-18 16:18:31,631 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2024-11-18 16:18:31,632 INFO L432 NwaCegarLoop]: 285 mSDtfsCounter, 660 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 894 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 894 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:31,632 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 1078 Invalid, 961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 894 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:18:31,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 609 states. [2024-11-18 16:18:31,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 609 to 535. [2024-11-18 16:18:31,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 439 states have (on average 1.4168564920273348) internal successors, (622), 448 states have internal predecessors, (622), 58 states have call successors, (58), 30 states have call predecessors, (58), 36 states have return successors, (69), 60 states have call predecessors, (69), 54 states have call successors, (69) [2024-11-18 16:18:31,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 749 transitions. [2024-11-18 16:18:31,672 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 749 transitions. Word has length 65 [2024-11-18 16:18:31,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:31,672 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 749 transitions. [2024-11-18 16:18:31,673 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:31,673 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 749 transitions. [2024-11-18 16:18:31,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-18 16:18:31,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:31,675 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] [2024-11-18 16:18:31,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-18 16:18:31,675 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:31,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:31,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1146629533, now seen corresponding path program 1 times [2024-11-18 16:18:31,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:31,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115517845] [2024-11-18 16:18:31,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:31,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:31,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:31,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115517845] [2024-11-18 16:18:31,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115517845] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:31,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:31,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:18:31,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323030732] [2024-11-18 16:18:31,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:31,754 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:18:31,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:31,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:18:31,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:18:31,756 INFO L87 Difference]: Start difference. First operand 535 states and 749 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:32,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:32,192 INFO L93 Difference]: Finished difference Result 1125 states and 1522 transitions. [2024-11-18 16:18:32,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-18 16:18:32,193 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-11-18 16:18:32,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:32,198 INFO L225 Difference]: With dead ends: 1125 [2024-11-18 16:18:32,198 INFO L226 Difference]: Without dead ends: 829 [2024-11-18 16:18:32,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:32,200 INFO L432 NwaCegarLoop]: 264 mSDtfsCounter, 619 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 642 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:32,201 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [642 Valid, 535 Invalid, 368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:18:32,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2024-11-18 16:18:32,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 825. [2024-11-18 16:18:32,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 825 states, 663 states have (on average 1.3665158371040724) internal successors, (906), 679 states have internal predecessors, (906), 93 states have call successors, (93), 52 states have call predecessors, (93), 67 states have return successors, (126), 100 states have call predecessors, (126), 89 states have call successors, (126) [2024-11-18 16:18:32,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 825 states to 825 states and 1125 transitions. [2024-11-18 16:18:32,265 INFO L78 Accepts]: Start accepts. Automaton has 825 states and 1125 transitions. Word has length 65 [2024-11-18 16:18:32,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:32,265 INFO L471 AbstractCegarLoop]: Abstraction has 825 states and 1125 transitions. [2024-11-18 16:18:32,266 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-18 16:18:32,266 INFO L276 IsEmpty]: Start isEmpty. Operand 825 states and 1125 transitions. [2024-11-18 16:18:32,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 16:18:32,268 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:32,268 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] [2024-11-18 16:18:32,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-18 16:18:32,269 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:32,269 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:32,270 INFO L85 PathProgramCache]: Analyzing trace with hash -502764948, now seen corresponding path program 1 times [2024-11-18 16:18:32,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:32,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001452267] [2024-11-18 16:18:32,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:32,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:32,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:32,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:32,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:32,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001452267] [2024-11-18 16:18:32,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001452267] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:32,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:32,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:18:32,310 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24570191] [2024-11-18 16:18:32,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:32,311 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:18:32,311 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:32,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:18:32,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:32,312 INFO L87 Difference]: Start difference. First operand 825 states and 1125 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:18:32,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:32,458 INFO L93 Difference]: Finished difference Result 1936 states and 2580 transitions. [2024-11-18 16:18:32,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:18:32,459 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 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 66 [2024-11-18 16:18:32,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:32,469 INFO L225 Difference]: With dead ends: 1936 [2024-11-18 16:18:32,469 INFO L226 Difference]: Without dead ends: 1329 [2024-11-18 16:18:32,472 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:32,473 INFO L432 NwaCegarLoop]: 453 mSDtfsCounter, 102 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 876 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:32,475 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 876 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:32,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1329 states. [2024-11-18 16:18:32,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1329 to 1306. [2024-11-18 16:18:32,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1306 states, 1042 states have (on average 1.3330134357005758) internal successors, (1389), 1061 states have internal predecessors, (1389), 138 states have call successors, (138), 96 states have call predecessors, (138), 124 states have return successors, (198), 155 states have call predecessors, (198), 134 states have call successors, (198) [2024-11-18 16:18:32,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1306 states to 1306 states and 1725 transitions. [2024-11-18 16:18:32,600 INFO L78 Accepts]: Start accepts. Automaton has 1306 states and 1725 transitions. Word has length 66 [2024-11-18 16:18:32,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:32,600 INFO L471 AbstractCegarLoop]: Abstraction has 1306 states and 1725 transitions. [2024-11-18 16:18:32,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:18:32,601 INFO L276 IsEmpty]: Start isEmpty. Operand 1306 states and 1725 transitions. [2024-11-18 16:18:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-18 16:18:32,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:32,603 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:18:32,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-18 16:18:32,603 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:32,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:32,604 INFO L85 PathProgramCache]: Analyzing trace with hash 955474711, now seen corresponding path program 1 times [2024-11-18 16:18:32,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:32,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852445759] [2024-11-18 16:18:32,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:32,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:32,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:32,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:32,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:32,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852445759] [2024-11-18 16:18:32,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852445759] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:32,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:32,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:18:32,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2097738179] [2024-11-18 16:18:32,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:32,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:18:32,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:32,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:18:32,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:32,655 INFO L87 Difference]: Start difference. First operand 1306 states and 1725 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:18:32,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:32,845 INFO L93 Difference]: Finished difference Result 3334 states and 4342 transitions. [2024-11-18 16:18:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:18:32,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 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 66 [2024-11-18 16:18:32,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:32,857 INFO L225 Difference]: With dead ends: 3334 [2024-11-18 16:18:32,858 INFO L226 Difference]: Without dead ends: 2266 [2024-11-18 16:18:32,861 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:32,862 INFO L432 NwaCegarLoop]: 455 mSDtfsCounter, 426 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:32,862 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 563 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:32,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2266 states. [2024-11-18 16:18:33,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2266 to 2168. [2024-11-18 16:18:33,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2168 states, 1708 states have (on average 1.2974238875878221) internal successors, (2216), 1737 states have internal predecessors, (2216), 236 states have call successors, (236), 180 states have call predecessors, (236), 222 states have return successors, (334), 257 states have call predecessors, (334), 232 states have call successors, (334) [2024-11-18 16:18:33,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2168 states to 2168 states and 2786 transitions. [2024-11-18 16:18:33,056 INFO L78 Accepts]: Start accepts. Automaton has 2168 states and 2786 transitions. Word has length 66 [2024-11-18 16:18:33,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:33,056 INFO L471 AbstractCegarLoop]: Abstraction has 2168 states and 2786 transitions. [2024-11-18 16:18:33,056 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:18:33,057 INFO L276 IsEmpty]: Start isEmpty. Operand 2168 states and 2786 transitions. [2024-11-18 16:18:33,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-18 16:18:33,060 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:33,060 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] [2024-11-18 16:18:33,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-18 16:18:33,061 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:33,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:33,061 INFO L85 PathProgramCache]: Analyzing trace with hash -2043324725, now seen corresponding path program 1 times [2024-11-18 16:18:33,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:33,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534044984] [2024-11-18 16:18:33,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:33,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:33,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:33,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:33,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:33,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534044984] [2024-11-18 16:18:33,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534044984] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:33,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:33,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:18:33,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447970787] [2024-11-18 16:18:33,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:33,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:18:33,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:33,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:18:33,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:33,105 INFO L87 Difference]: Start difference. First operand 2168 states and 2786 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:18:33,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:33,359 INFO L93 Difference]: Finished difference Result 4870 states and 6200 transitions. [2024-11-18 16:18:33,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:18:33,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 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 72 [2024-11-18 16:18:33,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:33,380 INFO L225 Difference]: With dead ends: 4870 [2024-11-18 16:18:33,380 INFO L226 Difference]: Without dead ends: 2940 [2024-11-18 16:18:33,388 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:33,389 INFO L432 NwaCegarLoop]: 470 mSDtfsCounter, 426 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:33,389 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 578 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:33,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2940 states. [2024-11-18 16:18:33,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2940 to 2900. [2024-11-18 16:18:33,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2900 states, 2276 states have (on average 1.2829525483304043) internal successors, (2920), 2313 states have internal predecessors, (2920), 316 states have call successors, (316), 250 states have call predecessors, (316), 306 states have return successors, (443), 343 states have call predecessors, (443), 312 states have call successors, (443) [2024-11-18 16:18:33,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2900 states to 2900 states and 3679 transitions. [2024-11-18 16:18:33,642 INFO L78 Accepts]: Start accepts. Automaton has 2900 states and 3679 transitions. Word has length 72 [2024-11-18 16:18:33,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:33,643 INFO L471 AbstractCegarLoop]: Abstraction has 2900 states and 3679 transitions. [2024-11-18 16:18:33,643 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-18 16:18:33,643 INFO L276 IsEmpty]: Start isEmpty. Operand 2900 states and 3679 transitions. [2024-11-18 16:18:33,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2024-11-18 16:18:33,645 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:33,646 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:18:33,646 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-18 16:18:33,646 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:33,647 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:33,647 INFO L85 PathProgramCache]: Analyzing trace with hash 564993281, now seen corresponding path program 1 times [2024-11-18 16:18:33,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:33,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519313547] [2024-11-18 16:18:33,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:33,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:33,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:33,715 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:33,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:33,716 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519313547] [2024-11-18 16:18:33,716 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519313547] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:33,716 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:33,716 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-18 16:18:33,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569999391] [2024-11-18 16:18:33,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:33,717 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-18 16:18:33,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:33,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-18 16:18:33,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-18 16:18:33,718 INFO L87 Difference]: Start difference. First operand 2900 states and 3679 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:18:34,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:34,080 INFO L93 Difference]: Finished difference Result 3431 states and 4334 transitions. [2024-11-18 16:18:34,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-18 16:18:34,080 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 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 73 [2024-11-18 16:18:34,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:34,101 INFO L225 Difference]: With dead ends: 3431 [2024-11-18 16:18:34,101 INFO L226 Difference]: Without dead ends: 3428 [2024-11-18 16:18:34,103 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:34,104 INFO L432 NwaCegarLoop]: 467 mSDtfsCounter, 845 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:34,104 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 557 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-18 16:18:34,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3428 states. [2024-11-18 16:18:34,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3428 to 3394. [2024-11-18 16:18:34,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3394 states, 2661 states have (on average 1.2747087561067267) internal successors, (3392), 2703 states have internal predecessors, (3392), 366 states have call successors, (366), 294 states have call predecessors, (366), 365 states have return successors, (522), 403 states have call predecessors, (522), 363 states have call successors, (522) [2024-11-18 16:18:34,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3394 states to 3394 states and 4280 transitions. [2024-11-18 16:18:34,402 INFO L78 Accepts]: Start accepts. Automaton has 3394 states and 4280 transitions. Word has length 73 [2024-11-18 16:18:34,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:34,403 INFO L471 AbstractCegarLoop]: Abstraction has 3394 states and 4280 transitions. [2024-11-18 16:18:34,403 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:18:34,403 INFO L276 IsEmpty]: Start isEmpty. Operand 3394 states and 4280 transitions. [2024-11-18 16:18:34,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-18 16:18:34,406 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:34,406 INFO L215 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:18:34,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-18 16:18:34,406 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:34,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:34,407 INFO L85 PathProgramCache]: Analyzing trace with hash 333968853, now seen corresponding path program 1 times [2024-11-18 16:18:34,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:34,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681039146] [2024-11-18 16:18:34,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:34,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:34,550 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:34,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:34,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681039146] [2024-11-18 16:18:34,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681039146] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-18 16:18:34,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1829935475] [2024-11-18 16:18:34,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:34,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-18 16:18:34,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-18 16:18:34,554 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) [2024-11-18 16:18:34,555 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-18 16:18:34,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:34,661 INFO L255 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-18 16:18:34,670 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-18 16:18:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:35,036 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-18 16:18:35,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:35,159 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1829935475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-18 16:18:35,159 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-18 16:18:35,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 4] total 7 [2024-11-18 16:18:35,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081995139] [2024-11-18 16:18:35,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-18 16:18:35,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 16:18:35,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:35,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 16:18:35,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:18:35,161 INFO L87 Difference]: Start difference. First operand 3394 states and 4280 transitions. Second operand has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 16:18:36,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:36,068 INFO L93 Difference]: Finished difference Result 7275 states and 9134 transitions. [2024-11-18 16:18:36,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-18 16:18:36,069 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 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 74 [2024-11-18 16:18:36,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:36,109 INFO L225 Difference]: With dead ends: 7275 [2024-11-18 16:18:36,110 INFO L226 Difference]: Without dead ends: 7272 [2024-11-18 16:18:36,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:18:36,116 INFO L432 NwaCegarLoop]: 647 mSDtfsCounter, 1168 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1168 SdHoareTripleChecker+Valid, 2248 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:36,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1168 Valid, 2248 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-18 16:18:36,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7272 states. [2024-11-18 16:18:36,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7272 to 5184. [2024-11-18 16:18:36,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5184 states, 4065 states have (on average 1.2713407134071342) internal successors, (5168), 4129 states have internal predecessors, (5168), 550 states have call successors, (550), 452 states have call predecessors, (550), 567 states have return successors, (800), 609 states have call predecessors, (800), 547 states have call successors, (800) [2024-11-18 16:18:36,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5184 states to 5184 states and 6518 transitions. [2024-11-18 16:18:36,655 INFO L78 Accepts]: Start accepts. Automaton has 5184 states and 6518 transitions. Word has length 74 [2024-11-18 16:18:36,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:36,655 INFO L471 AbstractCegarLoop]: Abstraction has 5184 states and 6518 transitions. [2024-11-18 16:18:36,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.571428571428573) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (20), 3 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-18 16:18:36,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5184 states and 6518 transitions. [2024-11-18 16:18:36,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-18 16:18:36,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:36,659 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-18 16:18:36,682 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-18 16:18:36,860 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 [2024-11-18 16:18:36,861 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:36,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:36,862 INFO L85 PathProgramCache]: Analyzing trace with hash 976546945, now seen corresponding path program 2 times [2024-11-18 16:18:36,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:36,862 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1163297707] [2024-11-18 16:18:36,862 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-18 16:18:36,862 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:36,884 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-18 16:18:36,885 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-18 16:18:36,911 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:36,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:36,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1163297707] [2024-11-18 16:18:36,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1163297707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:36,912 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:36,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:18:36,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540725417] [2024-11-18 16:18:36,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:36,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:18:36,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:36,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:18:36,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:36,915 INFO L87 Difference]: Start difference. First operand 5184 states and 6518 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:18:37,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:37,280 INFO L93 Difference]: Finished difference Result 7651 states and 9647 transitions. [2024-11-18 16:18:37,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:18:37,280 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 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 77 [2024-11-18 16:18:37,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:37,305 INFO L225 Difference]: With dead ends: 7651 [2024-11-18 16:18:37,305 INFO L226 Difference]: Without dead ends: 3576 [2024-11-18 16:18:37,317 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:37,319 INFO L432 NwaCegarLoop]: 541 mSDtfsCounter, 426 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:37,319 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [426 Valid, 657 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:37,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3576 states. [2024-11-18 16:18:37,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3576 to 3556. [2024-11-18 16:18:37,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3556 states, 2793 states have (on average 1.2559971356963837) internal successors, (3508), 2835 states have internal predecessors, (3508), 382 states have call successors, (382), 308 states have call predecessors, (382), 379 states have return successors, (526), 419 states have call predecessors, (526), 379 states have call successors, (526) [2024-11-18 16:18:37,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3556 states to 3556 states and 4416 transitions. [2024-11-18 16:18:37,676 INFO L78 Accepts]: Start accepts. Automaton has 3556 states and 4416 transitions. Word has length 77 [2024-11-18 16:18:37,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:37,677 INFO L471 AbstractCegarLoop]: Abstraction has 3556 states and 4416 transitions. [2024-11-18 16:18:37,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-18 16:18:37,677 INFO L276 IsEmpty]: Start isEmpty. Operand 3556 states and 4416 transitions. [2024-11-18 16:18:37,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-18 16:18:37,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:37,684 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:18:37,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-18 16:18:37,685 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:37,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:37,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1383113145, now seen corresponding path program 1 times [2024-11-18 16:18:37,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:37,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390587053] [2024-11-18 16:18:37,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:37,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:37,808 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-18 16:18:37,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:37,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390587053] [2024-11-18 16:18:37,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390587053] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:37,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:37,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:37,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929928621] [2024-11-18 16:18:37,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:37,810 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:37,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:37,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:37,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:37,810 INFO L87 Difference]: Start difference. First operand 3556 states and 4416 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:18:39,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:39,305 INFO L93 Difference]: Finished difference Result 10392 states and 12781 transitions. [2024-11-18 16:18:39,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-18 16:18:39,306 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 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 84 [2024-11-18 16:18:39,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:39,361 INFO L225 Difference]: With dead ends: 10392 [2024-11-18 16:18:39,361 INFO L226 Difference]: Without dead ends: 5785 [2024-11-18 16:18:39,376 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=144, Unknown=0, NotChecked=0, Total=210 [2024-11-18 16:18:39,377 INFO L432 NwaCegarLoop]: 320 mSDtfsCounter, 623 mSDsluCounter, 1059 mSDsCounter, 0 mSdLazyCounter, 980 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 1109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:39,377 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1379 Invalid, 1109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 980 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:18:39,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5785 states. [2024-11-18 16:18:40,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5785 to 5528. [2024-11-18 16:18:40,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 4313 states have (on average 1.2302341757477393) internal successors, (5306), 4391 states have internal predecessors, (5306), 591 states have call successors, (591), 490 states have call predecessors, (591), 622 states have return successors, (882), 653 states have call predecessors, (882), 588 states have call successors, (882) [2024-11-18 16:18:40,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 6779 transitions. [2024-11-18 16:18:40,072 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 6779 transitions. Word has length 84 [2024-11-18 16:18:40,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:40,073 INFO L471 AbstractCegarLoop]: Abstraction has 5528 states and 6779 transitions. [2024-11-18 16:18:40,074 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:18:40,074 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 6779 transitions. [2024-11-18 16:18:40,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-18 16:18:40,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:40,079 INFO L215 NwaCegarLoop]: trace histogram [3, 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] [2024-11-18 16:18:40,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-18 16:18:40,079 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:40,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:40,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1185637441, now seen corresponding path program 1 times [2024-11-18 16:18:40,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:40,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989730807] [2024-11-18 16:18:40,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:40,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:40,222 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-18 16:18:40,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:40,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989730807] [2024-11-18 16:18:40,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989730807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:40,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:40,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-18 16:18:40,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29662497] [2024-11-18 16:18:40,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:40,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-18 16:18:40,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:40,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-18 16:18:40,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-18 16:18:40,228 INFO L87 Difference]: Start difference. First operand 5528 states and 6779 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:18:41,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:41,786 INFO L93 Difference]: Finished difference Result 9552 states and 11662 transitions. [2024-11-18 16:18:41,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-18 16:18:41,787 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2024-11-18 16:18:41,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:41,825 INFO L225 Difference]: With dead ends: 9552 [2024-11-18 16:18:41,825 INFO L226 Difference]: Without dead ends: 4908 [2024-11-18 16:18:41,841 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2024-11-18 16:18:41,842 INFO L432 NwaCegarLoop]: 344 mSDtfsCounter, 1263 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1295 SdHoareTripleChecker+Valid, 1480 SdHoareTripleChecker+Invalid, 1384 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:41,842 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1295 Valid, 1480 Invalid, 1384 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-18 16:18:41,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4908 states. [2024-11-18 16:18:42,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4908 to 4627. [2024-11-18 16:18:42,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 3618 states have (on average 1.22277501381979) internal successors, (4424), 3679 states have internal predecessors, (4424), 495 states have call successors, (495), 405 states have call predecessors, (495), 512 states have return successors, (670), 549 states have call predecessors, (670), 492 states have call successors, (670) [2024-11-18 16:18:42,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 5589 transitions. [2024-11-18 16:18:42,345 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 5589 transitions. Word has length 93 [2024-11-18 16:18:42,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:42,345 INFO L471 AbstractCegarLoop]: Abstraction has 4627 states and 5589 transitions. [2024-11-18 16:18:42,346 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 7 states have internal predecessors, (74), 4 states have call successors, (9), 3 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-18 16:18:42,346 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 5589 transitions. [2024-11-18 16:18:42,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 16:18:42,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:42,351 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] [2024-11-18 16:18:42,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-18 16:18:42,352 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:42,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:42,353 INFO L85 PathProgramCache]: Analyzing trace with hash -2129567276, now seen corresponding path program 1 times [2024-11-18 16:18:42,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:42,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819526395] [2024-11-18 16:18:42,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:42,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:42,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:42,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:42,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819526395] [2024-11-18 16:18:42,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819526395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:42,402 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:42,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-18 16:18:42,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640695958] [2024-11-18 16:18:42,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:42,404 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-18 16:18:42,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:42,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-18 16:18:42,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:42,405 INFO L87 Difference]: Start difference. First operand 4627 states and 5589 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:42,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:42,727 INFO L93 Difference]: Finished difference Result 4832 states and 5899 transitions. [2024-11-18 16:18:42,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-18 16:18:42,728 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2024-11-18 16:18:42,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:42,766 INFO L225 Difference]: With dead ends: 4832 [2024-11-18 16:18:42,767 INFO L226 Difference]: Without dead ends: 4627 [2024-11-18 16:18:42,771 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-18 16:18:42,772 INFO L432 NwaCegarLoop]: 453 mSDtfsCounter, 316 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 582 SdHoareTripleChecker+Invalid, 2 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:42,772 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 582 Invalid, 2 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-18 16:18:42,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4627 states. [2024-11-18 16:18:43,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4627 to 4627. [2024-11-18 16:18:43,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4627 states, 3618 states have (on average 1.222498618021006) internal successors, (4423), 3679 states have internal predecessors, (4423), 495 states have call successors, (495), 405 states have call predecessors, (495), 512 states have return successors, (670), 549 states have call predecessors, (670), 492 states have call successors, (670) [2024-11-18 16:18:43,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4627 states to 4627 states and 5588 transitions. [2024-11-18 16:18:43,112 INFO L78 Accepts]: Start accepts. Automaton has 4627 states and 5588 transitions. Word has length 102 [2024-11-18 16:18:43,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:43,113 INFO L471 AbstractCegarLoop]: Abstraction has 4627 states and 5588 transitions. [2024-11-18 16:18:43,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:43,113 INFO L276 IsEmpty]: Start isEmpty. Operand 4627 states and 5588 transitions. [2024-11-18 16:18:43,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 16:18:43,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:43,118 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-18 16:18:43,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-18 16:18:43,118 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:43,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:43,119 INFO L85 PathProgramCache]: Analyzing trace with hash 288336790, now seen corresponding path program 1 times [2024-11-18 16:18:43,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:43,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588928843] [2024-11-18 16:18:43,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:43,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:43,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:43,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:43,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:43,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588928843] [2024-11-18 16:18:43,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588928843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:43,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:43,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-18 16:18:43,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897618973] [2024-11-18 16:18:43,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:43,264 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-18 16:18:43,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:43,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-18 16:18:43,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-18 16:18:43,265 INFO L87 Difference]: Start difference. First operand 4627 states and 5588 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:44,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:44,076 INFO L93 Difference]: Finished difference Result 5051 states and 6240 transitions. [2024-11-18 16:18:44,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-18 16:18:44,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 3 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 102 [2024-11-18 16:18:44,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:44,100 INFO L225 Difference]: With dead ends: 5051 [2024-11-18 16:18:44,100 INFO L226 Difference]: Without dead ends: 4849 [2024-11-18 16:18:44,104 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:44,105 INFO L432 NwaCegarLoop]: 318 mSDtfsCounter, 741 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:44,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1061 Invalid, 566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 501 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-18 16:18:44,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4849 states. [2024-11-18 16:18:44,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4849 to 4832. [2024-11-18 16:18:44,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4832 states, 3802 states have (on average 1.2382956338769069) internal successors, (4708), 3864 states have internal predecessors, (4708), 509 states have call successors, (509), 411 states have call predecessors, (509), 519 states have return successors, (685), 563 states have call predecessors, (685), 506 states have call successors, (685) [2024-11-18 16:18:44,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4832 states to 4832 states and 5902 transitions. [2024-11-18 16:18:44,688 INFO L78 Accepts]: Start accepts. Automaton has 4832 states and 5902 transitions. Word has length 102 [2024-11-18 16:18:44,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:44,689 INFO L471 AbstractCegarLoop]: Abstraction has 4832 states and 5902 transitions. [2024-11-18 16:18:44,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:44,689 INFO L276 IsEmpty]: Start isEmpty. Operand 4832 states and 5902 transitions. [2024-11-18 16:18:44,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 16:18:44,694 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:44,694 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] [2024-11-18 16:18:44,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-18 16:18:44,694 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:44,695 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:44,695 INFO L85 PathProgramCache]: Analyzing trace with hash -1670237996, now seen corresponding path program 1 times [2024-11-18 16:18:44,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:44,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201767244] [2024-11-18 16:18:44,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:44,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:44,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:44,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:44,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:44,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201767244] [2024-11-18 16:18:44,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201767244] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:44,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:44,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:44,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581889673] [2024-11-18 16:18:44,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:44,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:44,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:44,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:44,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:44,851 INFO L87 Difference]: Start difference. First operand 4832 states and 5902 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:46,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:46,179 INFO L93 Difference]: Finished difference Result 5491 states and 6919 transitions. [2024-11-18 16:18:46,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:46,180 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 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 102 [2024-11-18 16:18:46,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:46,208 INFO L225 Difference]: With dead ends: 5491 [2024-11-18 16:18:46,209 INFO L226 Difference]: Without dead ends: 5084 [2024-11-18 16:18:46,214 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:18:46,215 INFO L432 NwaCegarLoop]: 487 mSDtfsCounter, 733 mSDsluCounter, 1428 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 756 SdHoareTripleChecker+Valid, 1915 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:46,215 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [756 Valid, 1915 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-18 16:18:46,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5084 states. [2024-11-18 16:18:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5084 to 5023. [2024-11-18 16:18:46,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5023 states, 3972 states have (on average 1.25) internal successors, (4965), 4035 states have internal predecessors, (4965), 523 states have call successors, (523), 417 states have call predecessors, (523), 526 states have return successors, (702), 578 states have call predecessors, (702), 520 states have call successors, (702) [2024-11-18 16:18:46,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5023 states to 5023 states and 6190 transitions. [2024-11-18 16:18:46,941 INFO L78 Accepts]: Start accepts. Automaton has 5023 states and 6190 transitions. Word has length 102 [2024-11-18 16:18:46,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:46,942 INFO L471 AbstractCegarLoop]: Abstraction has 5023 states and 6190 transitions. [2024-11-18 16:18:46,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:46,942 INFO L276 IsEmpty]: Start isEmpty. Operand 5023 states and 6190 transitions. [2024-11-18 16:18:46,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 16:18:46,947 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:46,947 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] [2024-11-18 16:18:46,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-18 16:18:46,948 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:46,948 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:46,948 INFO L85 PathProgramCache]: Analyzing trace with hash 745598354, now seen corresponding path program 1 times [2024-11-18 16:18:46,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:46,948 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119443276] [2024-11-18 16:18:46,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:46,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:46,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:47,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:47,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119443276] [2024-11-18 16:18:47,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119443276] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:47,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:47,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:47,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816547650] [2024-11-18 16:18:47,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:47,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:47,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:47,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:47,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:47,071 INFO L87 Difference]: Start difference. First operand 5023 states and 6190 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:48,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:48,094 INFO L93 Difference]: Finished difference Result 6089 states and 7832 transitions. [2024-11-18 16:18:48,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:48,095 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 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 102 [2024-11-18 16:18:48,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:48,117 INFO L225 Difference]: With dead ends: 6089 [2024-11-18 16:18:48,117 INFO L226 Difference]: Without dead ends: 5491 [2024-11-18 16:18:48,121 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:18:48,122 INFO L432 NwaCegarLoop]: 483 mSDtfsCounter, 728 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 751 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:48,122 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [751 Valid, 1899 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:18:48,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5491 states. [2024-11-18 16:18:48,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5491 to 5424. [2024-11-18 16:18:48,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5424 states, 4329 states have (on average 1.2728112728112728) internal successors, (5510), 4396 states have internal predecessors, (5510), 551 states have call successors, (551), 429 states have call predecessors, (551), 542 states have return successors, (742), 608 states have call predecessors, (742), 548 states have call successors, (742) [2024-11-18 16:18:48,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5424 states to 5424 states and 6803 transitions. [2024-11-18 16:18:48,527 INFO L78 Accepts]: Start accepts. Automaton has 5424 states and 6803 transitions. Word has length 102 [2024-11-18 16:18:48,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:48,528 INFO L471 AbstractCegarLoop]: Abstraction has 5424 states and 6803 transitions. [2024-11-18 16:18:48,528 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:48,528 INFO L276 IsEmpty]: Start isEmpty. Operand 5424 states and 6803 transitions. [2024-11-18 16:18:48,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 16:18:48,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:48,534 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] [2024-11-18 16:18:48,534 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-18 16:18:48,534 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:48,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:48,535 INFO L85 PathProgramCache]: Analyzing trace with hash 2070454548, now seen corresponding path program 1 times [2024-11-18 16:18:48,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:48,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92754218] [2024-11-18 16:18:48,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:48,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:48,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:48,674 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:48,674 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:48,674 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92754218] [2024-11-18 16:18:48,674 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92754218] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:48,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:48,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:48,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624272364] [2024-11-18 16:18:48,675 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:48,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:48,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:48,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:48,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:48,677 INFO L87 Difference]: Start difference. First operand 5424 states and 6803 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:49,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:49,724 INFO L93 Difference]: Finished difference Result 7356 states and 9803 transitions. [2024-11-18 16:18:49,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:49,725 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 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 102 [2024-11-18 16:18:49,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:49,754 INFO L225 Difference]: With dead ends: 7356 [2024-11-18 16:18:49,754 INFO L226 Difference]: Without dead ends: 6357 [2024-11-18 16:18:49,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:18:49,762 INFO L432 NwaCegarLoop]: 480 mSDtfsCounter, 723 mSDsluCounter, 1407 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 746 SdHoareTripleChecker+Valid, 1887 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:49,763 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [746 Valid, 1887 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:18:49,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6357 states. [2024-11-18 16:18:50,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6357 to 6277. [2024-11-18 16:18:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6277 states, 5088 states have (on average 1.3132861635220126) internal successors, (6682), 5169 states have internal predecessors, (6682), 607 states have call successors, (607), 453 states have call predecessors, (607), 580 states have return successors, (846), 668 states have call predecessors, (846), 604 states have call successors, (846) [2024-11-18 16:18:50,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6277 states to 6277 states and 8135 transitions. [2024-11-18 16:18:50,316 INFO L78 Accepts]: Start accepts. Automaton has 6277 states and 8135 transitions. Word has length 102 [2024-11-18 16:18:50,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:50,317 INFO L471 AbstractCegarLoop]: Abstraction has 6277 states and 8135 transitions. [2024-11-18 16:18:50,317 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:50,317 INFO L276 IsEmpty]: Start isEmpty. Operand 6277 states and 8135 transitions. [2024-11-18 16:18:50,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 16:18:50,323 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:50,324 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] [2024-11-18 16:18:50,324 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-18 16:18:50,324 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:50,325 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:50,325 INFO L85 PathProgramCache]: Analyzing trace with hash -657754798, now seen corresponding path program 1 times [2024-11-18 16:18:50,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:50,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144786861] [2024-11-18 16:18:50,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:50,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:50,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:50,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:50,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:50,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144786861] [2024-11-18 16:18:50,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144786861] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:50,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:50,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:50,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650687914] [2024-11-18 16:18:50,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:50,472 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:50,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:50,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:50,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:50,474 INFO L87 Difference]: Start difference. First operand 6277 states and 8135 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:51,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:51,515 INFO L93 Difference]: Finished difference Result 10075 states and 14157 transitions. [2024-11-18 16:18:51,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:51,516 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 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 102 [2024-11-18 16:18:51,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:51,552 INFO L225 Difference]: With dead ends: 10075 [2024-11-18 16:18:51,552 INFO L226 Difference]: Without dead ends: 8223 [2024-11-18 16:18:51,564 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:18:51,566 INFO L432 NwaCegarLoop]: 477 mSDtfsCounter, 718 mSDsluCounter, 1398 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 46 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 46 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:51,566 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [741 Valid, 1875 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [46 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:18:51,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8223 states. [2024-11-18 16:18:52,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8223 to 8118. [2024-11-18 16:18:52,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8118 states, 6723 states have (on average 1.3740889483861372) internal successors, (9238), 6850 states have internal predecessors, (9238), 719 states have call successors, (719), 501 states have call predecessors, (719), 674 states have return successors, (1150), 788 states have call predecessors, (1150), 716 states have call successors, (1150) [2024-11-18 16:18:52,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8118 states to 8118 states and 11107 transitions. [2024-11-18 16:18:52,468 INFO L78 Accepts]: Start accepts. Automaton has 8118 states and 11107 transitions. Word has length 102 [2024-11-18 16:18:52,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:52,468 INFO L471 AbstractCegarLoop]: Abstraction has 8118 states and 11107 transitions. [2024-11-18 16:18:52,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:52,468 INFO L276 IsEmpty]: Start isEmpty. Operand 8118 states and 11107 transitions. [2024-11-18 16:18:52,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 16:18:52,476 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:52,477 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] [2024-11-18 16:18:52,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-18 16:18:52,477 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:52,477 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:52,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1715592876, now seen corresponding path program 1 times [2024-11-18 16:18:52,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:52,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228024296] [2024-11-18 16:18:52,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:52,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:52,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:52,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:52,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:52,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228024296] [2024-11-18 16:18:52,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228024296] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:52,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:52,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:52,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708631072] [2024-11-18 16:18:52,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:52,600 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:52,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:52,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:52,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:52,601 INFO L87 Difference]: Start difference. First operand 8118 states and 11107 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:54,147 INFO L93 Difference]: Finished difference Result 16634 states and 25040 transitions. [2024-11-18 16:18:54,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:54,148 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 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 102 [2024-11-18 16:18:54,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:54,213 INFO L225 Difference]: With dead ends: 16634 [2024-11-18 16:18:54,213 INFO L226 Difference]: Without dead ends: 12941 [2024-11-18 16:18:54,235 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:18:54,236 INFO L432 NwaCegarLoop]: 472 mSDtfsCounter, 766 mSDsluCounter, 1378 mSDsCounter, 0 mSdLazyCounter, 1007 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 788 SdHoareTripleChecker+Valid, 1850 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 1007 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:54,236 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [788 Valid, 1850 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 1007 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:18:54,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12941 states. [2024-11-18 16:18:55,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12941 to 12103. [2024-11-18 16:18:55,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12103 states, 10258 states have (on average 1.447650614154806) internal successors, (14850), 10531 states have internal predecessors, (14850), 927 states have call successors, (927), 597 states have call predecessors, (927), 916 states have return successors, (2126), 1012 states have call predecessors, (2126), 924 states have call successors, (2126) [2024-11-18 16:18:55,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12103 states to 12103 states and 17903 transitions. [2024-11-18 16:18:55,177 INFO L78 Accepts]: Start accepts. Automaton has 12103 states and 17903 transitions. Word has length 102 [2024-11-18 16:18:55,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:55,177 INFO L471 AbstractCegarLoop]: Abstraction has 12103 states and 17903 transitions. [2024-11-18 16:18:55,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:55,178 INFO L276 IsEmpty]: Start isEmpty. Operand 12103 states and 17903 transitions. [2024-11-18 16:18:55,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 16:18:55,187 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:55,187 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] [2024-11-18 16:18:55,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-18 16:18:55,188 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:55,188 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:55,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1436871954, now seen corresponding path program 1 times [2024-11-18 16:18:55,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:55,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133563034] [2024-11-18 16:18:55,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:55,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:55,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:55,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:55,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133563034] [2024-11-18 16:18:55,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133563034] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:55,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:55,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:55,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015395804] [2024-11-18 16:18:55,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:55,284 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:55,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:55,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:55,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:55,285 INFO L87 Difference]: Start difference. First operand 12103 states and 17903 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:57,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:18:57,069 INFO L93 Difference]: Finished difference Result 29941 states and 48990 transitions. [2024-11-18 16:18:57,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:18:57,069 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 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 102 [2024-11-18 16:18:57,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:18:57,172 INFO L225 Difference]: With dead ends: 29941 [2024-11-18 16:18:57,172 INFO L226 Difference]: Without dead ends: 22263 [2024-11-18 16:18:57,209 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:18:57,210 INFO L432 NwaCegarLoop]: 468 mSDtfsCounter, 841 mSDsluCounter, 1366 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 870 SdHoareTripleChecker+Valid, 1834 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-18 16:18:57,210 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [870 Valid, 1834 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-18 16:18:57,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22263 states. [2024-11-18 16:18:58,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22263 to 20596. [2024-11-18 16:18:58,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20596 states, 17705 states have (on average 1.5106467099689354) internal successors, (26746), 18432 states have internal predecessors, (26746), 1327 states have call successors, (1327), 789 states have call predecessors, (1327), 1562 states have return successors, (5598), 1444 states have call predecessors, (5598), 1324 states have call successors, (5598) [2024-11-18 16:18:58,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20596 states to 20596 states and 33671 transitions. [2024-11-18 16:18:58,737 INFO L78 Accepts]: Start accepts. Automaton has 20596 states and 33671 transitions. Word has length 102 [2024-11-18 16:18:58,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:18:58,738 INFO L471 AbstractCegarLoop]: Abstraction has 20596 states and 33671 transitions. [2024-11-18 16:18:58,738 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:18:58,738 INFO L276 IsEmpty]: Start isEmpty. Operand 20596 states and 33671 transitions. [2024-11-18 16:18:58,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 16:18:58,751 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:18:58,751 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] [2024-11-18 16:18:58,751 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-18 16:18:58,751 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:18:58,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:18:58,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1677111700, now seen corresponding path program 1 times [2024-11-18 16:18:58,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:18:58,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846113127] [2024-11-18 16:18:58,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:18:58,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:18:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:18:58,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:18:58,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:18:58,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846113127] [2024-11-18 16:18:58,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846113127] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:18:58,844 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:18:58,844 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:18:58,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481884628] [2024-11-18 16:18:58,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:18:58,845 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:18:58,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:18:58,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:18:58,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:18:58,846 INFO L87 Difference]: Start difference. First operand 20596 states and 33671 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:19:02,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:02,103 INFO L93 Difference]: Finished difference Result 58372 states and 106516 transitions. [2024-11-18 16:19:02,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:19:02,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 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 102 [2024-11-18 16:19:02,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:02,344 INFO L225 Difference]: With dead ends: 58372 [2024-11-18 16:19:02,344 INFO L226 Difference]: Without dead ends: 42201 [2024-11-18 16:19:02,416 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:19:02,416 INFO L432 NwaCegarLoop]: 321 mSDtfsCounter, 765 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 846 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 1341 SdHoareTripleChecker+Invalid, 910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:02,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 1341 Invalid, 910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 846 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:19:02,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42201 states. [2024-11-18 16:19:06,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42201 to 39993. [2024-11-18 16:19:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39993 states, 34556 states have (on average 1.5607709225604816) internal successors, (53934), 36677 states have internal predecessors, (53934), 2095 states have call successors, (2095), 1173 states have call predecessors, (2095), 3340 states have return successors, (18654), 2276 states have call predecessors, (18654), 2092 states have call successors, (18654) [2024-11-18 16:19:06,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39993 states to 39993 states and 74683 transitions. [2024-11-18 16:19:06,405 INFO L78 Accepts]: Start accepts. Automaton has 39993 states and 74683 transitions. Word has length 102 [2024-11-18 16:19:06,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-18 16:19:06,406 INFO L471 AbstractCegarLoop]: Abstraction has 39993 states and 74683 transitions. [2024-11-18 16:19:06,406 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:19:06,406 INFO L276 IsEmpty]: Start isEmpty. Operand 39993 states and 74683 transitions. [2024-11-18 16:19:06,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-18 16:19:06,427 INFO L207 NwaCegarLoop]: Found error trace [2024-11-18 16:19:06,428 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] [2024-11-18 16:19:06,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-18 16:19:06,428 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-18 16:19:06,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-18 16:19:06,429 INFO L85 PathProgramCache]: Analyzing trace with hash -1778821934, now seen corresponding path program 1 times [2024-11-18 16:19:06,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-18 16:19:06,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927239133] [2024-11-18 16:19:06,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-18 16:19:06,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-18 16:19:06,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-18 16:19:06,520 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-18 16:19:06,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-18 16:19:06,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927239133] [2024-11-18 16:19:06,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927239133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-18 16:19:06,521 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-18 16:19:06,521 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-18 16:19:06,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546453652] [2024-11-18 16:19:06,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-18 16:19:06,522 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-18 16:19:06,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-18 16:19:06,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-18 16:19:06,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-18 16:19:06,523 INFO L87 Difference]: Start difference. First operand 39993 states and 74683 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-18 16:19:12,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-18 16:19:12,290 INFO L93 Difference]: Finished difference Result 119409 states and 255510 transitions. [2024-11-18 16:19:12,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-18 16:19:12,290 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 3 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 102 [2024-11-18 16:19:12,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-18 16:19:13,029 INFO L225 Difference]: With dead ends: 119409 [2024-11-18 16:19:13,029 INFO L226 Difference]: Without dead ends: 83841 [2024-11-18 16:19:13,124 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-18 16:19:13,125 INFO L432 NwaCegarLoop]: 459 mSDtfsCounter, 739 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 865 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 768 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 914 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 865 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-18 16:19:13,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [768 Valid, 1800 Invalid, 914 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 865 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-18 16:19:13,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83841 states.