./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB --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 11f663f31fd7e407dcb664c9f5df2c771bffa1ce1600c8629f9e6c1a07759991 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:18:52,495 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:18:52,621 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:18:52,635 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:18:52,635 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:18:52,680 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:18:52,682 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:18:52,682 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:18:52,683 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:18:52,683 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:18:52,683 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:18:52,684 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:18:52,684 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:18:52,684 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:18:52,684 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:18:52,684 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:18:52,685 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:18:52,685 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:18:52,685 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:18:52,685 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:18:52,685 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:18:52,685 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:18:52,685 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:18:52,685 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:18:52,685 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:18:52,686 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:18:52,686 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:18:52,686 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:18:52,686 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:18:52,686 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:18:52,686 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:18:52,686 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:18:52,686 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:18:52,687 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:18:52,687 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:18:52,687 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:18:52,689 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:18:52,690 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:18:52,690 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:18:52,690 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:18:52,690 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:18:52,690 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:18:52,691 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:18:52,691 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:18:52,691 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:18:52,691 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:18:52,692 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:18:52,692 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:18:52,692 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 11f663f31fd7e407dcb664c9f5df2c771bffa1ce1600c8629f9e6c1a07759991 [2024-11-27 20:18:53,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:18:53,107 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:18:53,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:18:53,112 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:18:53,113 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:18:53,114 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i [2024-11-27 20:18:56,785 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/data/8fdb41645/a5e10da19ff74b51b2cdf4cb7f0288b0/FLAG3f0f11d8d [2024-11-27 20:18:57,163 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:18:57,164 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i [2024-11-27 20:18:57,176 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/data/8fdb41645/a5e10da19ff74b51b2cdf4cb7f0288b0/FLAG3f0f11d8d [2024-11-27 20:18:57,196 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/data/8fdb41645/a5e10da19ff74b51b2cdf4cb7f0288b0 [2024-11-27 20:18:57,199 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:18:57,201 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:18:57,202 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:18:57,202 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:18:57,208 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:18:57,209 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:18:57" (1/1) ... [2024-11-27 20:18:57,211 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19f29e20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57, skipping insertion in model container [2024-11-27 20:18:57,211 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:18:57" (1/1) ... [2024-11-27 20:18:57,240 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:18:57,471 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i[915,928] [2024-11-27 20:18:57,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:18:57,640 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:18:57,658 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/sv-benchmarks/c/hardness-nfm22/hardness_fillercode_fillercodesize_ps-cn-25_file-34.i[915,928] [2024-11-27 20:18:57,717 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:18:57,740 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:18:57,741 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57 WrapperNode [2024-11-27 20:18:57,741 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:18:57,743 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:18:57,743 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:18:57,743 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:18:57,752 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57" (1/1) ... [2024-11-27 20:18:57,771 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57" (1/1) ... [2024-11-27 20:18:57,833 INFO L138 Inliner]: procedures = 26, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 243 [2024-11-27 20:18:57,833 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:18:57,834 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:18:57,834 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:18:57,834 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:18:57,846 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57" (1/1) ... [2024-11-27 20:18:57,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57" (1/1) ... [2024-11-27 20:18:57,850 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57" (1/1) ... [2024-11-27 20:18:57,871 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]. [2024-11-27 20:18:57,871 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57" (1/1) ... [2024-11-27 20:18:57,872 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57" (1/1) ... [2024-11-27 20:18:57,898 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57" (1/1) ... [2024-11-27 20:18:57,899 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57" (1/1) ... [2024-11-27 20:18:57,911 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57" (1/1) ... [2024-11-27 20:18:57,918 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57" (1/1) ... [2024-11-27 20:18:57,920 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57" (1/1) ... [2024-11-27 20:18:57,927 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:18:57,932 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:18:57,932 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:18:57,932 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:18:57,933 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57" (1/1) ... [2024-11-27 20:18:57,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:18:57,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:18:57,983 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:18:57,989 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:18:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:18:58,029 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 20:18:58,030 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 20:18:58,030 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:18:58,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:18:58,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:18:58,169 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:18:58,172 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:18:58,993 INFO L? ?]: Removed 30 outVars from TransFormulas that were not future-live. [2024-11-27 20:18:58,993 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:18:59,015 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:18:59,015 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:18:59,016 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:18:59 BoogieIcfgContainer [2024-11-27 20:18:59,016 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:18:59,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:18:59,023 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:18:59,029 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:18:59,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:18:57" (1/3) ... [2024-11-27 20:18:59,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b497478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:18:59, skipping insertion in model container [2024-11-27 20:18:59,030 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:18:57" (2/3) ... [2024-11-27 20:18:59,030 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b497478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:18:59, skipping insertion in model container [2024-11-27 20:18:59,031 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:18:59" (3/3) ... [2024-11-27 20:18:59,034 INFO L128 eAbstractionObserver]: Analyzing ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-34.i [2024-11-27 20:18:59,075 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:18:59,079 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG hardness_fillercode_fillercodesize_ps-cn-25_file-34.i that has 2 procedures, 99 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 20:18:59,163 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:18:59,177 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;@5ff54665, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:18:59,178 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:18:59,182 INFO L276 IsEmpty]: Start isEmpty. Operand has 99 states, 69 states have (on average 1.463768115942029) internal successors, (101), 70 states have internal predecessors, (101), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-27 20:18:59,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-27 20:18:59,206 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:18:59,207 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:18:59,208 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:18:59,213 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:18:59,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1302440786, now seen corresponding path program 1 times [2024-11-27 20:18:59,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:18:59,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236012020] [2024-11-27 20:18:59,224 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:18:59,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:18:59,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:18:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-11-27 20:18:59,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:18:59,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236012020] [2024-11-27 20:18:59,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236012020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:18:59,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1393250954] [2024-11-27 20:18:59,745 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:18:59,746 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:18:59,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:18:59,749 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:18:59,754 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:19:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:00,138 INFO L256 TraceCheckSpWp]: Trace formula consists of 439 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-27 20:19:00,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:19:00,209 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2024-11-27 20:19:00,210 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:19:00,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1393250954] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:00,211 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:19:00,211 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-27 20:19:00,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723470051] [2024-11-27 20:19:00,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:00,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:19:00,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:00,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:19:00,257 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:19:00,261 INFO L87 Difference]: Start difference. First operand has 99 states, 69 states have (on average 1.463768115942029) internal successors, (101), 70 states have internal predecessors, (101), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) Second operand has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:19:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:00,312 INFO L93 Difference]: Finished difference Result 191 states and 331 transitions. [2024-11-27 20:19:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:19:00,314 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) Word has length 177 [2024-11-27 20:19:00,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:00,323 INFO L225 Difference]: With dead ends: 191 [2024-11-27 20:19:00,323 INFO L226 Difference]: Without dead ends: 95 [2024-11-27 20:19:00,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:19:00,331 INFO L435 NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:00,332 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:19:00,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-27 20:19:00,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-11-27 20:19:00,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 66 states have (on average 1.4242424242424243) internal successors, (94), 66 states have internal predecessors, (94), 27 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2024-11-27 20:19:00,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 148 transitions. [2024-11-27 20:19:00,386 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 148 transitions. Word has length 177 [2024-11-27 20:19:00,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:00,386 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 148 transitions. [2024-11-27 20:19:00,387 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.5) internal successors, (47), 2 states have internal predecessors, (47), 2 states have call successors, (27), 2 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:19:00,387 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 148 transitions. [2024-11-27 20:19:00,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2024-11-27 20:19:00,391 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:00,391 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:00,405 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:19:00,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-27 20:19:00,593 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:00,593 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:00,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1470251024, now seen corresponding path program 1 times [2024-11-27 20:19:00,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:00,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865576867] [2024-11-27 20:19:00,594 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:00,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:00,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:01,717 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:19:01,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:01,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865576867] [2024-11-27 20:19:01,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1865576867] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:01,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:01,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:19:01,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709591236] [2024-11-27 20:19:01,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:01,722 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:19:01,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:01,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:19:01,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:19:01,723 INFO L87 Difference]: Start difference. First operand 95 states and 148 transitions. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:02,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:02,109 INFO L93 Difference]: Finished difference Result 309 states and 483 transitions. [2024-11-27 20:19:02,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:19:02,113 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 177 [2024-11-27 20:19:02,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:02,117 INFO L225 Difference]: With dead ends: 309 [2024-11-27 20:19:02,121 INFO L226 Difference]: Without dead ends: 217 [2024-11-27 20:19:02,122 INFO L434 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 [2024-11-27 20:19:02,123 INFO L435 NwaCegarLoop]: 183 mSDtfsCounter, 154 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:02,127 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 462 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:19:02,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2024-11-27 20:19:02,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 187. [2024-11-27 20:19:02,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 187 states, 130 states have (on average 1.4230769230769231) internal successors, (185), 130 states have internal predecessors, (185), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-27 20:19:02,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 293 transitions. [2024-11-27 20:19:02,207 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 293 transitions. Word has length 177 [2024-11-27 20:19:02,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:02,212 INFO L471 AbstractCegarLoop]: Abstraction has 187 states and 293 transitions. [2024-11-27 20:19:02,212 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:02,213 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 293 transitions. [2024-11-27 20:19:02,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2024-11-27 20:19:02,219 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:02,220 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:02,220 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:19:02,224 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:02,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:02,225 INFO L85 PathProgramCache]: Analyzing trace with hash 219795577, now seen corresponding path program 1 times [2024-11-27 20:19:02,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:02,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825617615] [2024-11-27 20:19:02,225 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:02,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:02,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:02,965 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:19:02,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:02,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825617615] [2024-11-27 20:19:02,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825617615] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:02,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:02,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:19:02,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065175225] [2024-11-27 20:19:02,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:02,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:19:02,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:02,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:19:02,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:19:02,976 INFO L87 Difference]: Start difference. First operand 187 states and 293 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:03,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:03,570 INFO L93 Difference]: Finished difference Result 550 states and 862 transitions. [2024-11-27 20:19:03,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:19:03,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 178 [2024-11-27 20:19:03,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:03,576 INFO L225 Difference]: With dead ends: 550 [2024-11-27 20:19:03,577 INFO L226 Difference]: Without dead ends: 366 [2024-11-27 20:19:03,578 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:19:03,579 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 225 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:03,580 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [225 Valid, 456 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:19:03,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2024-11-27 20:19:03,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 191. [2024-11-27 20:19:03,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 134 states have (on average 1.4104477611940298) internal successors, (189), 134 states have internal predecessors, (189), 54 states have call successors, (54), 2 states have call predecessors, (54), 2 states have return successors, (54), 54 states have call predecessors, (54), 54 states have call successors, (54) [2024-11-27 20:19:03,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 297 transitions. [2024-11-27 20:19:03,667 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 297 transitions. Word has length 178 [2024-11-27 20:19:03,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:03,668 INFO L471 AbstractCegarLoop]: Abstraction has 191 states and 297 transitions. [2024-11-27 20:19:03,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:03,669 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 297 transitions. [2024-11-27 20:19:03,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-27 20:19:03,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:03,678 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:03,678 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:19:03,679 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:03,681 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:03,681 INFO L85 PathProgramCache]: Analyzing trace with hash -1006525000, now seen corresponding path program 1 times [2024-11-27 20:19:03,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:03,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559677514] [2024-11-27 20:19:03,682 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:03,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:03,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:07,051 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:19:07,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:07,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559677514] [2024-11-27 20:19:07,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559677514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:07,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:07,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:19:07,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861888323] [2024-11-27 20:19:07,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:07,055 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:19:07,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:07,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:19:07,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:19:07,058 INFO L87 Difference]: Start difference. First operand 191 states and 297 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:08,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:08,569 INFO L93 Difference]: Finished difference Result 603 states and 923 transitions. [2024-11-27 20:19:08,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:19:08,570 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2024-11-27 20:19:08,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:08,575 INFO L225 Difference]: With dead ends: 603 [2024-11-27 20:19:08,575 INFO L226 Difference]: Without dead ends: 415 [2024-11-27 20:19:08,576 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:19:08,577 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 287 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 287 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:08,578 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [287 Valid, 480 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-27 20:19:08,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 415 states. [2024-11-27 20:19:08,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 415 to 339. [2024-11-27 20:19:08,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 254 states have (on average 1.437007874015748) internal successors, (365), 254 states have internal predecessors, (365), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-27 20:19:08,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 527 transitions. [2024-11-27 20:19:08,653 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 527 transitions. Word has length 179 [2024-11-27 20:19:08,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:08,654 INFO L471 AbstractCegarLoop]: Abstraction has 339 states and 527 transitions. [2024-11-27 20:19:08,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:08,654 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 527 transitions. [2024-11-27 20:19:08,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-27 20:19:08,658 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:08,658 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:08,658 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:19:08,658 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:08,659 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:08,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1686583370, now seen corresponding path program 1 times [2024-11-27 20:19:08,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:08,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859272416] [2024-11-27 20:19:08,659 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:08,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:08,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:09,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:19:09,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:09,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859272416] [2024-11-27 20:19:09,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859272416] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:09,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:09,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:19:09,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730541483] [2024-11-27 20:19:09,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:09,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:19:09,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:09,484 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:19:09,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:19:09,485 INFO L87 Difference]: Start difference. First operand 339 states and 527 transitions. Second operand has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:09,979 INFO L93 Difference]: Finished difference Result 583 states and 902 transitions. [2024-11-27 20:19:09,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:19:09,980 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2024-11-27 20:19:09,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:09,984 INFO L225 Difference]: With dead ends: 583 [2024-11-27 20:19:09,984 INFO L226 Difference]: Without dead ends: 329 [2024-11-27 20:19:09,985 INFO L434 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 [2024-11-27 20:19:09,986 INFO L435 NwaCegarLoop]: 127 mSDtfsCounter, 107 mSDsluCounter, 244 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:09,987 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 371 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:19:09,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-27 20:19:10,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 263. [2024-11-27 20:19:10,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 178 states have (on average 1.3932584269662922) internal successors, (248), 178 states have internal predecessors, (248), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-27 20:19:10,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 410 transitions. [2024-11-27 20:19:10,088 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 410 transitions. Word has length 179 [2024-11-27 20:19:10,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:10,089 INFO L471 AbstractCegarLoop]: Abstraction has 263 states and 410 transitions. [2024-11-27 20:19:10,089 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.75) internal successors, (47), 4 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:10,090 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 410 transitions. [2024-11-27 20:19:10,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-27 20:19:10,092 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:10,093 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:10,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:19:10,093 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:10,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:10,094 INFO L85 PathProgramCache]: Analyzing trace with hash 4592250, now seen corresponding path program 1 times [2024-11-27 20:19:10,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:10,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066155634] [2024-11-27 20:19:10,094 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:10,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:10,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:19:21,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:21,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066155634] [2024-11-27 20:19:21,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066155634] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:21,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:21,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 20:19:21,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136920929] [2024-11-27 20:19:21,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:21,656 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:19:21,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:21,657 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:19:21,657 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:19:21,657 INFO L87 Difference]: Start difference. First operand 263 states and 410 transitions. Second operand has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:24,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:24,321 INFO L93 Difference]: Finished difference Result 600 states and 912 transitions. [2024-11-27 20:19:24,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:19:24,322 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2024-11-27 20:19:24,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:24,326 INFO L225 Difference]: With dead ends: 600 [2024-11-27 20:19:24,326 INFO L226 Difference]: Without dead ends: 401 [2024-11-27 20:19:24,327 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:19:24,328 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 286 mSDsluCounter, 605 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:24,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 719 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-27 20:19:24,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 401 states. [2024-11-27 20:19:24,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 401 to 331. [2024-11-27 20:19:24,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331 states, 246 states have (on average 1.4146341463414633) internal successors, (348), 246 states have internal predecessors, (348), 81 states have call successors, (81), 3 states have call predecessors, (81), 3 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-27 20:19:24,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331 states to 331 states and 510 transitions. [2024-11-27 20:19:24,395 INFO L78 Accepts]: Start accepts. Automaton has 331 states and 510 transitions. Word has length 179 [2024-11-27 20:19:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:24,396 INFO L471 AbstractCegarLoop]: Abstraction has 331 states and 510 transitions. [2024-11-27 20:19:24,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.2727272727272725) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:24,396 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states and 510 transitions. [2024-11-27 20:19:24,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-27 20:19:24,399 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:24,399 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:24,400 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:19:24,400 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:24,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:24,401 INFO L85 PathProgramCache]: Analyzing trace with hash -675466120, now seen corresponding path program 1 times [2024-11-27 20:19:24,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:24,401 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77154797] [2024-11-27 20:19:24,401 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:24,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:31,653 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:19:31,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:31,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77154797] [2024-11-27 20:19:31,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77154797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:31,653 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:31,653 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 20:19:31,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343576723] [2024-11-27 20:19:31,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:31,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:19:31,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:31,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:19:31,655 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:19:31,656 INFO L87 Difference]: Start difference. First operand 331 states and 510 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:35,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:35,131 INFO L93 Difference]: Finished difference Result 778 states and 1170 transitions. [2024-11-27 20:19:35,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:19:35,133 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2024-11-27 20:19:35,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:35,138 INFO L225 Difference]: With dead ends: 778 [2024-11-27 20:19:35,138 INFO L226 Difference]: Without dead ends: 590 [2024-11-27 20:19:35,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:19:35,141 INFO L435 NwaCegarLoop]: 144 mSDtfsCounter, 421 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 421 SdHoareTripleChecker+Valid, 487 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:35,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [421 Valid, 487 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-27 20:19:35,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2024-11-27 20:19:35,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 439. [2024-11-27 20:19:35,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 342 states have (on average 1.4035087719298245) internal successors, (480), 344 states have internal predecessors, (480), 91 states have call successors, (91), 5 states have call predecessors, (91), 5 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-27 20:19:35,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 662 transitions. [2024-11-27 20:19:35,214 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 662 transitions. Word has length 179 [2024-11-27 20:19:35,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:35,215 INFO L471 AbstractCegarLoop]: Abstraction has 439 states and 662 transitions. [2024-11-27 20:19:35,215 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 12 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:35,215 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 662 transitions. [2024-11-27 20:19:35,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-27 20:19:35,218 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:35,218 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:35,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 20:19:35,218 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:35,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:35,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1099541242, now seen corresponding path program 1 times [2024-11-27 20:19:35,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:35,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118617849] [2024-11-27 20:19:35,219 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:35,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:39,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:19:39,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:39,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118617849] [2024-11-27 20:19:39,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118617849] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:39,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:39,191 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-27 20:19:39,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728689933] [2024-11-27 20:19:39,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:39,191 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-27 20:19:39,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:39,192 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-27 20:19:39,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-27 20:19:39,192 INFO L87 Difference]: Start difference. First operand 439 states and 662 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:41,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:41,118 INFO L93 Difference]: Finished difference Result 946 states and 1406 transitions. [2024-11-27 20:19:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:19:41,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2024-11-27 20:19:41,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:41,127 INFO L225 Difference]: With dead ends: 946 [2024-11-27 20:19:41,127 INFO L226 Difference]: Without dead ends: 658 [2024-11-27 20:19:41,128 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:19:41,129 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 294 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 475 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 573 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:41,130 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 573 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 475 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:19:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2024-11-27 20:19:41,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 480. [2024-11-27 20:19:41,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 383 states have (on average 1.391644908616188) internal successors, (533), 385 states have internal predecessors, (533), 91 states have call successors, (91), 5 states have call predecessors, (91), 5 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-27 20:19:41,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 715 transitions. [2024-11-27 20:19:41,229 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 715 transitions. Word has length 179 [2024-11-27 20:19:41,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:41,230 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 715 transitions. [2024-11-27 20:19:41,230 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:41,230 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 715 transitions. [2024-11-27 20:19:41,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-27 20:19:41,236 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:41,236 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:41,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:19:41,237 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:41,237 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:41,238 INFO L85 PathProgramCache]: Analyzing trace with hash -1945599191, now seen corresponding path program 1 times [2024-11-27 20:19:41,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:41,238 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946906942] [2024-11-27 20:19:41,238 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:41,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:43,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:19:43,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:43,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946906942] [2024-11-27 20:19:43,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946906942] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:43,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:43,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:19:43,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001123509] [2024-11-27 20:19:43,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:43,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:19:43,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:43,720 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:19:43,720 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:19:43,721 INFO L87 Difference]: Start difference. First operand 480 states and 715 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:44,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:44,530 INFO L93 Difference]: Finished difference Result 836 states and 1244 transitions. [2024-11-27 20:19:44,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:19:44,531 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 179 [2024-11-27 20:19:44,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:44,534 INFO L225 Difference]: With dead ends: 836 [2024-11-27 20:19:44,534 INFO L226 Difference]: Without dead ends: 534 [2024-11-27 20:19:44,536 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:19:44,536 INFO L435 NwaCegarLoop]: 120 mSDtfsCounter, 173 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 449 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:44,536 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 449 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:19:44,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2024-11-27 20:19:44,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 480. [2024-11-27 20:19:44,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 383 states have (on average 1.3759791122715406) internal successors, (527), 385 states have internal predecessors, (527), 91 states have call successors, (91), 5 states have call predecessors, (91), 5 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-27 20:19:44,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 709 transitions. [2024-11-27 20:19:44,607 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 709 transitions. Word has length 179 [2024-11-27 20:19:44,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:44,607 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 709 transitions. [2024-11-27 20:19:44,608 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:44,608 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 709 transitions. [2024-11-27 20:19:44,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-27 20:19:44,612 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:44,612 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:44,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:19:44,612 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:44,613 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:44,615 INFO L85 PathProgramCache]: Analyzing trace with hash 505905582, now seen corresponding path program 1 times [2024-11-27 20:19:44,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:44,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168825230] [2024-11-27 20:19:44,615 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:44,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:44,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:44,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:19:44,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:44,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168825230] [2024-11-27 20:19:44,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168825230] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:44,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:44,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:19:44,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859430721] [2024-11-27 20:19:44,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:44,788 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:19:44,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:44,789 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:19:44,789 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:19:44,790 INFO L87 Difference]: Start difference. First operand 480 states and 709 transitions. Second operand has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:44,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:44,887 INFO L93 Difference]: Finished difference Result 794 states and 1183 transitions. [2024-11-27 20:19:44,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:19:44,888 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 180 [2024-11-27 20:19:44,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:44,891 INFO L225 Difference]: With dead ends: 794 [2024-11-27 20:19:44,892 INFO L226 Difference]: Without dead ends: 492 [2024-11-27 20:19:44,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:19:44,894 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 10 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:44,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 272 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:19:44,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2024-11-27 20:19:44,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 480. [2024-11-27 20:19:44,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 480 states, 383 states have (on average 1.3550913838120104) internal successors, (519), 385 states have internal predecessors, (519), 91 states have call successors, (91), 5 states have call predecessors, (91), 5 states have return successors, (91), 89 states have call predecessors, (91), 91 states have call successors, (91) [2024-11-27 20:19:44,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 480 states to 480 states and 701 transitions. [2024-11-27 20:19:44,968 INFO L78 Accepts]: Start accepts. Automaton has 480 states and 701 transitions. Word has length 180 [2024-11-27 20:19:44,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:44,968 INFO L471 AbstractCegarLoop]: Abstraction has 480 states and 701 transitions. [2024-11-27 20:19:44,968 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.0) internal successors, (48), 3 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:44,969 INFO L276 IsEmpty]: Start isEmpty. Operand 480 states and 701 transitions. [2024-11-27 20:19:44,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-27 20:19:44,971 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:44,971 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:44,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:19:44,972 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:44,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:44,973 INFO L85 PathProgramCache]: Analyzing trace with hash -195158996, now seen corresponding path program 1 times [2024-11-27 20:19:44,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:44,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962634313] [2024-11-27 20:19:44,973 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:44,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:49,039 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:19:49,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:49,040 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962634313] [2024-11-27 20:19:49,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962634313] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:49,040 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:49,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:19:49,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199450712] [2024-11-27 20:19:49,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:49,041 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:19:49,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:49,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:19:49,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:19:49,042 INFO L87 Difference]: Start difference. First operand 480 states and 701 transitions. Second operand has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:51,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:19:51,024 INFO L93 Difference]: Finished difference Result 944 states and 1373 transitions. [2024-11-27 20:19:51,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:19:51,025 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 180 [2024-11-27 20:19:51,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:19:51,031 INFO L225 Difference]: With dead ends: 944 [2024-11-27 20:19:51,031 INFO L226 Difference]: Without dead ends: 688 [2024-11-27 20:19:51,033 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:19:51,034 INFO L435 NwaCegarLoop]: 159 mSDtfsCounter, 312 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 588 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:19:51,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 588 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:19:51,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 688 states. [2024-11-27 20:19:51,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 688 to 410. [2024-11-27 20:19:51,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 410 states, 323 states have (on average 1.346749226006192) internal successors, (435), 323 states have internal predecessors, (435), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-27 20:19:51,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 410 states to 410 states and 597 transitions. [2024-11-27 20:19:51,134 INFO L78 Accepts]: Start accepts. Automaton has 410 states and 597 transitions. Word has length 180 [2024-11-27 20:19:51,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:19:51,135 INFO L471 AbstractCegarLoop]: Abstraction has 410 states and 597 transitions. [2024-11-27 20:19:51,135 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.8) internal successors, (48), 10 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:19:51,135 INFO L276 IsEmpty]: Start isEmpty. Operand 410 states and 597 transitions. [2024-11-27 20:19:51,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-27 20:19:51,139 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:19:51,139 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:19:51,140 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 20:19:51,143 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:19:51,144 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:19:51,144 INFO L85 PathProgramCache]: Analyzing trace with hash -350192478, now seen corresponding path program 1 times [2024-11-27 20:19:51,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:19:51,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762129526] [2024-11-27 20:19:51,144 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:19:51,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:19:51,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:19:58,392 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:19:58,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:19:58,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762129526] [2024-11-27 20:19:58,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762129526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:19:58,393 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:19:58,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-27 20:19:58,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [691096495] [2024-11-27 20:19:58,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:19:58,394 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:19:58,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:19:58,397 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:19:58,397 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:19:58,398 INFO L87 Difference]: Start difference. First operand 410 states and 597 transitions. Second operand has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:20:01,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:01,986 INFO L93 Difference]: Finished difference Result 858 states and 1227 transitions. [2024-11-27 20:20:01,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:20:01,987 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 180 [2024-11-27 20:20:01,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:01,992 INFO L225 Difference]: With dead ends: 858 [2024-11-27 20:20:01,992 INFO L226 Difference]: Without dead ends: 600 [2024-11-27 20:20:01,993 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 83 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=137, Invalid=415, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:20:01,994 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 344 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 920 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 344 SdHoareTripleChecker+Valid, 944 SdHoareTripleChecker+Invalid, 1013 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 920 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:01,994 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [344 Valid, 944 Invalid, 1013 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 920 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 20:20:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2024-11-27 20:20:02,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 447. [2024-11-27 20:20:02,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 360 states have (on average 1.3527777777777779) internal successors, (487), 360 states have internal predecessors, (487), 81 states have call successors, (81), 5 states have call predecessors, (81), 5 states have return successors, (81), 81 states have call predecessors, (81), 81 states have call successors, (81) [2024-11-27 20:20:02,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 649 transitions. [2024-11-27 20:20:02,071 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 649 transitions. Word has length 180 [2024-11-27 20:20:02,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:02,072 INFO L471 AbstractCegarLoop]: Abstraction has 447 states and 649 transitions. [2024-11-27 20:20:02,072 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.4285714285714284) internal successors, (48), 14 states have internal predecessors, (48), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:20:02,073 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 649 transitions. [2024-11-27 20:20:02,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-27 20:20:02,074 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:02,075 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:20:02,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 20:20:02,075 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:02,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:02,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1665273245, now seen corresponding path program 1 times [2024-11-27 20:20:02,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:02,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739618642] [2024-11-27 20:20:02,076 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:02,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:20:07,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:07,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739618642] [2024-11-27 20:20:07,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739618642] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:07,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:07,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 20:20:07,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700285327] [2024-11-27 20:20:07,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:07,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:20:07,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:07,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:20:07,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:20:07,184 INFO L87 Difference]: Start difference. First operand 447 states and 649 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:20:13,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:13,131 INFO L93 Difference]: Finished difference Result 1151 states and 1681 transitions. [2024-11-27 20:20:13,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 20:20:13,132 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-11-27 20:20:13,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:13,139 INFO L225 Difference]: With dead ends: 1151 [2024-11-27 20:20:13,139 INFO L226 Difference]: Without dead ends: 945 [2024-11-27 20:20:13,140 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=248, Invalid=564, Unknown=0, NotChecked=0, Total=812 [2024-11-27 20:20:13,143 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 646 mSDsluCounter, 651 mSDsCounter, 0 mSdLazyCounter, 777 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 646 SdHoareTripleChecker+Valid, 804 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:13,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [646 Valid, 804 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 777 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-27 20:20:13,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 945 states. [2024-11-27 20:20:13,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 945 to 671. [2024-11-27 20:20:13,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 671 states, 526 states have (on average 1.3574144486692015) internal successors, (714), 526 states have internal predecessors, (714), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:20:13,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 671 states to 671 states and 984 transitions. [2024-11-27 20:20:13,260 INFO L78 Accepts]: Start accepts. Automaton has 671 states and 984 transitions. Word has length 181 [2024-11-27 20:20:13,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:13,261 INFO L471 AbstractCegarLoop]: Abstraction has 671 states and 984 transitions. [2024-11-27 20:20:13,261 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:20:13,261 INFO L276 IsEmpty]: Start isEmpty. Operand 671 states and 984 transitions. [2024-11-27 20:20:13,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-27 20:20:13,265 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:13,265 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:20:13,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 20:20:13,266 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:13,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:13,266 INFO L85 PathProgramCache]: Analyzing trace with hash 309910167, now seen corresponding path program 1 times [2024-11-27 20:20:13,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:13,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413742299] [2024-11-27 20:20:13,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:13,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:13,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:19,992 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:20:19,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:19,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413742299] [2024-11-27 20:20:19,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413742299] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:19,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:19,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-27 20:20:19,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962696404] [2024-11-27 20:20:19,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:20,014 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:20:20,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:20,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:20:20,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:20:20,016 INFO L87 Difference]: Start difference. First operand 671 states and 984 transitions. Second operand has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:20:23,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:23,511 INFO L93 Difference]: Finished difference Result 1516 states and 2201 transitions. [2024-11-27 20:20:23,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:20:23,512 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 181 [2024-11-27 20:20:23,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:23,518 INFO L225 Difference]: With dead ends: 1516 [2024-11-27 20:20:23,518 INFO L226 Difference]: Without dead ends: 1017 [2024-11-27 20:20:23,520 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=149, Invalid=451, Unknown=0, NotChecked=0, Total=600 [2024-11-27 20:20:23,521 INFO L435 NwaCegarLoop]: 111 mSDtfsCounter, 567 mSDsluCounter, 614 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 567 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 1081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:23,521 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [567 Valid, 725 Invalid, 1081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-27 20:20:23,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2024-11-27 20:20:23,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 733. [2024-11-27 20:20:23,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 733 states, 588 states have (on average 1.3503401360544218) internal successors, (794), 588 states have internal predecessors, (794), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:20:23,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 733 states to 733 states and 1064 transitions. [2024-11-27 20:20:23,623 INFO L78 Accepts]: Start accepts. Automaton has 733 states and 1064 transitions. Word has length 181 [2024-11-27 20:20:23,624 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:23,624 INFO L471 AbstractCegarLoop]: Abstraction has 733 states and 1064 transitions. [2024-11-27 20:20:23,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5) internal successors, (49), 14 states have internal predecessors, (49), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:20:23,624 INFO L276 IsEmpty]: Start isEmpty. Operand 733 states and 1064 transitions. [2024-11-27 20:20:23,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-27 20:20:23,626 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:23,627 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:20:23,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 20:20:23,627 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:23,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:23,628 INFO L85 PathProgramCache]: Analyzing trace with hash 2084917529, now seen corresponding path program 1 times [2024-11-27 20:20:23,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:23,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467653255] [2024-11-27 20:20:23,628 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:23,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:23,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:20:32,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:32,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467653255] [2024-11-27 20:20:32,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1467653255] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:32,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:32,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 20:20:32,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134254414] [2024-11-27 20:20:32,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:32,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:20:32,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:32,615 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:20:32,615 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:20:32,616 INFO L87 Difference]: Start difference. First operand 733 states and 1064 transitions. Second operand has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:20:42,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:42,891 INFO L93 Difference]: Finished difference Result 1267 states and 1843 transitions. [2024-11-27 20:20:42,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:20:42,891 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-11-27 20:20:42,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:42,896 INFO L225 Difference]: With dead ends: 1267 [2024-11-27 20:20:42,896 INFO L226 Difference]: Without dead ends: 859 [2024-11-27 20:20:42,898 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 8.6s TimeCoverageRelationStatistics Valid=216, Invalid=654, Unknown=0, NotChecked=0, Total=870 [2024-11-27 20:20:42,898 INFO L435 NwaCegarLoop]: 118 mSDtfsCounter, 532 mSDsluCounter, 857 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 1414 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:42,899 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 975 Invalid, 1414 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2024-11-27 20:20:42,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 859 states. [2024-11-27 20:20:42,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 859 to 749. [2024-11-27 20:20:42,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 604 states have (on average 1.3509933774834437) internal successors, (816), 604 states have internal predecessors, (816), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:20:43,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1086 transitions. [2024-11-27 20:20:43,004 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1086 transitions. Word has length 181 [2024-11-27 20:20:43,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:43,004 INFO L471 AbstractCegarLoop]: Abstraction has 749 states and 1086 transitions. [2024-11-27 20:20:43,005 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 2.8823529411764706) internal successors, (49), 17 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:20:43,005 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1086 transitions. [2024-11-27 20:20:43,006 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-27 20:20:43,007 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:43,007 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:20:43,007 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 20:20:43,007 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:43,008 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:43,008 INFO L85 PathProgramCache]: Analyzing trace with hash 1404859159, now seen corresponding path program 1 times [2024-11-27 20:20:43,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:43,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833437660] [2024-11-27 20:20:43,009 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:43,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:20:48,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:20:48,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:20:48,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833437660] [2024-11-27 20:20:48,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833437660] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:20:48,076 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:20:48,076 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 20:20:48,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23481766] [2024-11-27 20:20:48,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:20:48,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:20:48,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:20:48,077 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:20:48,077 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:20:48,078 INFO L87 Difference]: Start difference. First operand 749 states and 1086 transitions. Second operand has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:20:51,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:20:51,297 INFO L93 Difference]: Finished difference Result 1549 states and 2243 transitions. [2024-11-27 20:20:51,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:20:51,299 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 181 [2024-11-27 20:20:51,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:20:51,304 INFO L225 Difference]: With dead ends: 1549 [2024-11-27 20:20:51,305 INFO L226 Difference]: Without dead ends: 1141 [2024-11-27 20:20:51,307 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=135, Invalid=245, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:20:51,307 INFO L435 NwaCegarLoop]: 146 mSDtfsCounter, 336 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 439 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:20:51,308 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 549 Invalid, 450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 439 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:20:51,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1141 states. [2024-11-27 20:20:51,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1141 to 763. [2024-11-27 20:20:51,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 763 states, 618 states have (on average 1.3559870550161812) internal successors, (838), 618 states have internal predecessors, (838), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:20:51,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 763 states to 763 states and 1108 transitions. [2024-11-27 20:20:51,552 INFO L78 Accepts]: Start accepts. Automaton has 763 states and 1108 transitions. Word has length 181 [2024-11-27 20:20:51,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:20:51,553 INFO L471 AbstractCegarLoop]: Abstraction has 763 states and 1108 transitions. [2024-11-27 20:20:51,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.083333333333333) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:20:51,553 INFO L276 IsEmpty]: Start isEmpty. Operand 763 states and 1108 transitions. [2024-11-27 20:20:51,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-27 20:20:51,555 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:20:51,555 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:20:51,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 20:20:51,556 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:20:51,556 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:20:51,557 INFO L85 PathProgramCache]: Analyzing trace with hash 94978982, now seen corresponding path program 1 times [2024-11-27 20:20:51,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:20:51,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870680283] [2024-11-27 20:20:51,557 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:20:51,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:20:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:21:41,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:21:41,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:21:41,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870680283] [2024-11-27 20:21:41,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870680283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:21:41,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:21:41,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-27 20:21:41,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334743817] [2024-11-27 20:21:41,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:21:41,331 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-27 20:21:41,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:21:41,332 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-27 20:21:41,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:21:41,333 INFO L87 Difference]: Start difference. First operand 763 states and 1108 transitions. Second operand has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:21:44,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:21:44,596 INFO L93 Difference]: Finished difference Result 1166 states and 1632 transitions. [2024-11-27 20:21:44,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:21:44,597 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 182 [2024-11-27 20:21:44,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:21:44,602 INFO L225 Difference]: With dead ends: 1166 [2024-11-27 20:21:44,602 INFO L226 Difference]: Without dead ends: 1164 [2024-11-27 20:21:44,603 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=157, Invalid=545, Unknown=0, NotChecked=0, Total=702 [2024-11-27 20:21:44,604 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 572 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 897 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 572 SdHoareTripleChecker+Valid, 890 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:21:44,604 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [572 Valid, 890 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 897 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-27 20:21:44,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1164 states. [2024-11-27 20:21:44,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1164 to 836. [2024-11-27 20:21:44,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 836 states, 691 states have (on average 1.3531114327062228) internal successors, (935), 691 states have internal predecessors, (935), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:21:44,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 1205 transitions. [2024-11-27 20:21:44,716 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 1205 transitions. Word has length 182 [2024-11-27 20:21:44,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:21:44,716 INFO L471 AbstractCegarLoop]: Abstraction has 836 states and 1205 transitions. [2024-11-27 20:21:44,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 15 states have internal predecessors, (50), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:21:44,717 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 1205 transitions. [2024-11-27 20:21:44,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-27 20:21:44,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:21:44,719 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:21:44,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 20:21:44,719 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:21:44,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:21:44,720 INFO L85 PathProgramCache]: Analyzing trace with hash -722669468, now seen corresponding path program 1 times [2024-11-27 20:21:44,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:21:44,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500790175] [2024-11-27 20:21:44,720 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:21:44,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:21:44,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:36,382 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:22:36,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:36,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500790175] [2024-11-27 20:22:36,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1500790175] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:36,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:36,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 20:22:36,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107301069] [2024-11-27 20:22:36,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:36,383 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:22:36,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:36,384 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:22:36,384 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:22:36,384 INFO L87 Difference]: Start difference. First operand 836 states and 1205 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:22:37,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:22:37,670 INFO L93 Difference]: Finished difference Result 1189 states and 1660 transitions. [2024-11-27 20:22:37,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:22:37,670 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 182 [2024-11-27 20:22:37,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:22:37,675 INFO L225 Difference]: With dead ends: 1189 [2024-11-27 20:22:37,675 INFO L226 Difference]: Without dead ends: 1187 [2024-11-27 20:22:37,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=425, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:22:37,676 INFO L435 NwaCegarLoop]: 163 mSDtfsCounter, 275 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:22:37,676 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 1430 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:22:37,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1187 states. [2024-11-27 20:22:37,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1187 to 905. [2024-11-27 20:22:37,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 905 states, 760 states have (on average 1.3421052631578947) internal successors, (1020), 760 states have internal predecessors, (1020), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:22:37,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 905 states to 905 states and 1290 transitions. [2024-11-27 20:22:37,770 INFO L78 Accepts]: Start accepts. Automaton has 905 states and 1290 transitions. Word has length 182 [2024-11-27 20:22:37,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:22:37,771 INFO L471 AbstractCegarLoop]: Abstraction has 905 states and 1290 transitions. [2024-11-27 20:22:37,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 13 states have internal predecessors, (50), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:22:37,771 INFO L276 IsEmpty]: Start isEmpty. Operand 905 states and 1290 transitions. [2024-11-27 20:22:37,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-27 20:22:37,773 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:22:37,773 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:37,773 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 20:22:37,774 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:22:37,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:37,774 INFO L85 PathProgramCache]: Analyzing trace with hash 517680808, now seen corresponding path program 1 times [2024-11-27 20:22:37,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:37,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018558253] [2024-11-27 20:22:37,774 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:37,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:37,954 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:22:37,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:37,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018558253] [2024-11-27 20:22:37,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018558253] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:37,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:37,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:22:37,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842963219] [2024-11-27 20:22:37,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:37,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:22:37,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:37,955 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:22:37,955 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:22:37,956 INFO L87 Difference]: Start difference. First operand 905 states and 1290 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:22:38,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:22:38,216 INFO L93 Difference]: Finished difference Result 1581 states and 2266 transitions. [2024-11-27 20:22:38,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:22:38,217 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), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 182 [2024-11-27 20:22:38,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:22:38,222 INFO L225 Difference]: With dead ends: 1581 [2024-11-27 20:22:38,222 INFO L226 Difference]: Without dead ends: 928 [2024-11-27 20:22:38,224 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:22:38,224 INFO L435 NwaCegarLoop]: 141 mSDtfsCounter, 116 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:22:38,224 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 555 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:22:38,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 928 states. [2024-11-27 20:22:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 928 to 882. [2024-11-27 20:22:38,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 882 states, 737 states have (on average 1.3432835820895523) internal successors, (990), 737 states have internal predecessors, (990), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:22:38,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 882 states to 882 states and 1260 transitions. [2024-11-27 20:22:38,332 INFO L78 Accepts]: Start accepts. Automaton has 882 states and 1260 transitions. Word has length 182 [2024-11-27 20:22:38,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:22:38,333 INFO L471 AbstractCegarLoop]: Abstraction has 882 states and 1260 transitions. [2024-11-27 20:22:38,333 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), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:22:38,333 INFO L276 IsEmpty]: Start isEmpty. Operand 882 states and 1260 transitions. [2024-11-27 20:22:38,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-27 20:22:38,335 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:22:38,335 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:38,335 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 20:22:38,336 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:22:38,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:38,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1664045197, now seen corresponding path program 1 times [2024-11-27 20:22:38,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:38,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672068568] [2024-11-27 20:22:38,337 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:38,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:38,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:51,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:22:51,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:51,319 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1672068568] [2024-11-27 20:22:51,319 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1672068568] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:51,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:51,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-27 20:22:51,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216886083] [2024-11-27 20:22:51,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:51,320 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:22:51,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:51,320 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:22:51,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:22:51,321 INFO L87 Difference]: Start difference. First operand 882 states and 1260 transitions. Second operand has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:22:53,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:22:53,623 INFO L93 Difference]: Finished difference Result 1560 states and 2219 transitions. [2024-11-27 20:22:53,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 20:22:53,624 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 182 [2024-11-27 20:22:53,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:22:53,628 INFO L225 Difference]: With dead ends: 1560 [2024-11-27 20:22:53,629 INFO L226 Difference]: Without dead ends: 1034 [2024-11-27 20:22:53,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=147, Invalid=503, Unknown=0, NotChecked=0, Total=650 [2024-11-27 20:22:53,630 INFO L435 NwaCegarLoop]: 143 mSDtfsCounter, 240 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1008 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 240 SdHoareTripleChecker+Valid, 865 SdHoareTripleChecker+Invalid, 1101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:22:53,630 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [240 Valid, 865 Invalid, 1101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1008 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:22:53,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2024-11-27 20:22:53,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 866. [2024-11-27 20:22:53,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 866 states, 721 states have (on average 1.3273231622746187) internal successors, (957), 721 states have internal predecessors, (957), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:22:53,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1227 transitions. [2024-11-27 20:22:53,734 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1227 transitions. Word has length 182 [2024-11-27 20:22:53,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:22:53,734 INFO L471 AbstractCegarLoop]: Abstraction has 866 states and 1227 transitions. [2024-11-27 20:22:53,735 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.5714285714285716) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:22:53,735 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1227 transitions. [2024-11-27 20:22:53,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-27 20:22:53,737 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:22:53,737 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:53,737 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 20:22:53,737 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:22:53,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:53,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1840198095, now seen corresponding path program 1 times [2024-11-27 20:22:53,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:53,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334287389] [2024-11-27 20:22:53,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:53,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:53,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:22:56,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:22:56,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:22:56,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334287389] [2024-11-27 20:22:56,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334287389] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:22:56,891 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:22:56,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-27 20:22:56,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512652280] [2024-11-27 20:22:56,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:22:56,892 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-27 20:22:56,892 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:22:56,893 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-27 20:22:56,893 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-27 20:22:56,893 INFO L87 Difference]: Start difference. First operand 866 states and 1227 transitions. Second operand has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:22:58,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:22:58,544 INFO L93 Difference]: Finished difference Result 1204 states and 1721 transitions. [2024-11-27 20:22:58,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:22:58,545 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 182 [2024-11-27 20:22:58,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:22:58,548 INFO L225 Difference]: With dead ends: 1204 [2024-11-27 20:22:58,548 INFO L226 Difference]: Without dead ends: 994 [2024-11-27 20:22:58,548 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=110, Invalid=232, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:22:58,549 INFO L435 NwaCegarLoop]: 150 mSDtfsCounter, 262 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 362 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 743 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:22:58,549 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 743 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 362 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 20:22:58,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2024-11-27 20:22:58,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 858. [2024-11-27 20:22:58,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 858 states, 713 states have (on average 1.3253856942496494) internal successors, (945), 713 states have internal predecessors, (945), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:22:58,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 858 states to 858 states and 1215 transitions. [2024-11-27 20:22:58,654 INFO L78 Accepts]: Start accepts. Automaton has 858 states and 1215 transitions. Word has length 182 [2024-11-27 20:22:58,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:22:58,655 INFO L471 AbstractCegarLoop]: Abstraction has 858 states and 1215 transitions. [2024-11-27 20:22:58,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.545454545454546) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:22:58,655 INFO L276 IsEmpty]: Start isEmpty. Operand 858 states and 1215 transitions. [2024-11-27 20:22:58,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:22:58,657 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:22:58,657 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:22:58,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 20:22:58,657 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:22:58,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:22:58,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1906520206, now seen corresponding path program 1 times [2024-11-27 20:22:58,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:22:58,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013511971] [2024-11-27 20:22:58,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:22:58,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:22:58,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:23:56,131 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:23:56,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:23:56,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013511971] [2024-11-27 20:23:56,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013511971] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:23:56,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:23:56,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 20:23:56,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574397276] [2024-11-27 20:23:56,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:23:56,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:23:56,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:23:56,132 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:23:56,132 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:23:56,133 INFO L87 Difference]: Start difference. First operand 858 states and 1215 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:23:59,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:23:59,298 INFO L93 Difference]: Finished difference Result 1096 states and 1498 transitions. [2024-11-27 20:23:59,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:23:59,298 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 183 [2024-11-27 20:23:59,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:23:59,304 INFO L225 Difference]: With dead ends: 1096 [2024-11-27 20:23:59,304 INFO L226 Difference]: Without dead ends: 1094 [2024-11-27 20:23:59,305 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=214, Invalid=716, Unknown=0, NotChecked=0, Total=930 [2024-11-27 20:23:59,307 INFO L435 NwaCegarLoop]: 124 mSDtfsCounter, 476 mSDsluCounter, 923 mSDsCounter, 0 mSdLazyCounter, 825 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1047 SdHoareTripleChecker+Invalid, 954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:23:59,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 1047 Invalid, 954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 825 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-27 20:23:59,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1094 states. [2024-11-27 20:23:59,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1094 to 896. [2024-11-27 20:23:59,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 896 states, 751 states have (on average 1.322237017310253) internal successors, (993), 751 states have internal predecessors, (993), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:23:59,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 896 states to 896 states and 1263 transitions. [2024-11-27 20:23:59,409 INFO L78 Accepts]: Start accepts. Automaton has 896 states and 1263 transitions. Word has length 183 [2024-11-27 20:23:59,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:23:59,409 INFO L471 AbstractCegarLoop]: Abstraction has 896 states and 1263 transitions. [2024-11-27 20:23:59,410 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:23:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 896 states and 1263 transitions. [2024-11-27 20:23:59,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:23:59,411 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:23:59,412 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:23:59,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 20:23:59,412 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:23:59,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:23:59,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1483818380, now seen corresponding path program 1 times [2024-11-27 20:23:59,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:23:59,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929278575] [2024-11-27 20:23:59,413 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:23:59,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:23:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:49,770 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:24:49,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:49,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929278575] [2024-11-27 20:24:49,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929278575] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:49,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:49,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-27 20:24:49,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895853559] [2024-11-27 20:24:49,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:49,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-27 20:24:49,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:49,772 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-27 20:24:49,772 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2024-11-27 20:24:49,772 INFO L87 Difference]: Start difference. First operand 896 states and 1263 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:24:52,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:52,821 INFO L93 Difference]: Finished difference Result 1116 states and 1521 transitions. [2024-11-27 20:24:52,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 20:24:52,822 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 183 [2024-11-27 20:24:52,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:52,824 INFO L225 Difference]: With dead ends: 1116 [2024-11-27 20:24:52,824 INFO L226 Difference]: Without dead ends: 1114 [2024-11-27 20:24:52,825 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2024-11-27 20:24:52,825 INFO L435 NwaCegarLoop]: 112 mSDtfsCounter, 462 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 1057 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 462 SdHoareTripleChecker+Valid, 879 SdHoareTripleChecker+Invalid, 1188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:52,825 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [462 Valid, 879 Invalid, 1188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1057 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-27 20:24:52,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1114 states. [2024-11-27 20:24:52,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1114 to 934. [2024-11-27 20:24:52,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 789 states have (on average 1.3193916349809887) internal successors, (1041), 789 states have internal predecessors, (1041), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:24:52,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1311 transitions. [2024-11-27 20:24:52,928 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1311 transitions. Word has length 183 [2024-11-27 20:24:52,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:52,928 INFO L471 AbstractCegarLoop]: Abstraction has 934 states and 1311 transitions. [2024-11-27 20:24:52,929 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:24:52,929 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1311 transitions. [2024-11-27 20:24:52,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:24:52,931 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:52,931 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:52,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 20:24:52,931 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:52,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:52,932 INFO L85 PathProgramCache]: Analyzing trace with hash 2142534596, now seen corresponding path program 1 times [2024-11-27 20:24:52,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:52,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164641546] [2024-11-27 20:24:52,932 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:52,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:52,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:24:56,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:24:56,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:24:56,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164641546] [2024-11-27 20:24:56,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164641546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:24:56,907 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:24:56,907 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-27 20:24:56,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786800285] [2024-11-27 20:24:56,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:24:56,908 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-27 20:24:56,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:24:56,908 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-27 20:24:56,909 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:24:56,909 INFO L87 Difference]: Start difference. First operand 934 states and 1311 transitions. Second operand has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:24:59,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:24:59,321 INFO L93 Difference]: Finished difference Result 1678 states and 2402 transitions. [2024-11-27 20:24:59,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:24:59,321 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 183 [2024-11-27 20:24:59,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:24:59,326 INFO L225 Difference]: With dead ends: 1678 [2024-11-27 20:24:59,326 INFO L226 Difference]: Without dead ends: 1264 [2024-11-27 20:24:59,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=98, Invalid=244, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:24:59,328 INFO L435 NwaCegarLoop]: 149 mSDtfsCounter, 291 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 594 SdHoareTripleChecker+Invalid, 312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:24:59,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 594 Invalid, 312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:24:59,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1264 states. [2024-11-27 20:24:59,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1264 to 978. [2024-11-27 20:24:59,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 978 states, 833 states have (on average 1.3289315726290516) internal successors, (1107), 833 states have internal predecessors, (1107), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:24:59,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 978 states to 978 states and 1377 transitions. [2024-11-27 20:24:59,398 INFO L78 Accepts]: Start accepts. Automaton has 978 states and 1377 transitions. Word has length 183 [2024-11-27 20:24:59,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:24:59,399 INFO L471 AbstractCegarLoop]: Abstraction has 978 states and 1377 transitions. [2024-11-27 20:24:59,399 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.25) internal successors, (51), 12 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:24:59,399 INFO L276 IsEmpty]: Start isEmpty. Operand 978 states and 1377 transitions. [2024-11-27 20:24:59,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 20:24:59,401 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:24:59,401 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:24:59,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 20:24:59,402 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:24:59,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:24:59,402 INFO L85 PathProgramCache]: Analyzing trace with hash 1462476226, now seen corresponding path program 1 times [2024-11-27 20:24:59,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:24:59,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61906972] [2024-11-27 20:24:59,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:24:59,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:24:59,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:09,306 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:25:09,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:09,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61906972] [2024-11-27 20:25:09,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61906972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:09,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:09,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 20:25:09,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448401484] [2024-11-27 20:25:09,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:09,307 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:25:09,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:09,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:25:09,307 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:25:09,308 INFO L87 Difference]: Start difference. First operand 978 states and 1377 transitions. Second operand has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:25:12,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:12,816 INFO L93 Difference]: Finished difference Result 1610 states and 2290 transitions. [2024-11-27 20:25:12,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:25:12,816 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 183 [2024-11-27 20:25:12,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:12,821 INFO L225 Difference]: With dead ends: 1610 [2024-11-27 20:25:12,822 INFO L226 Difference]: Without dead ends: 1102 [2024-11-27 20:25:12,823 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=179, Invalid=577, Unknown=0, NotChecked=0, Total=756 [2024-11-27 20:25:12,824 INFO L435 NwaCegarLoop]: 116 mSDtfsCounter, 434 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 1132 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 1331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 1132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:12,824 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 988 Invalid, 1331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [199 Valid, 1132 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-27 20:25:12,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2024-11-27 20:25:12,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 976. [2024-11-27 20:25:12,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 831 states have (on average 1.3200962695547533) internal successors, (1097), 831 states have internal predecessors, (1097), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:25:12,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1367 transitions. [2024-11-27 20:25:12,927 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1367 transitions. Word has length 183 [2024-11-27 20:25:12,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:12,928 INFO L471 AbstractCegarLoop]: Abstraction has 976 states and 1367 transitions. [2024-11-27 20:25:12,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.0) internal successors, (51), 17 states have internal predecessors, (51), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:25:12,928 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1367 transitions. [2024-11-27 20:25:12,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-27 20:25:12,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:12,930 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:12,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 20:25:12,930 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:12,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:12,931 INFO L85 PathProgramCache]: Analyzing trace with hash -1966430054, now seen corresponding path program 1 times [2024-11-27 20:25:12,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:12,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1647123436] [2024-11-27 20:25:12,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:12,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:13,468 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:25:13,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:13,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1647123436] [2024-11-27 20:25:13,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1647123436] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:13,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:13,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:25:13,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990555892] [2024-11-27 20:25:13,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:13,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:25:13,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:13,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:25:13,470 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:25:13,471 INFO L87 Difference]: Start difference. First operand 976 states and 1367 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:25:14,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:14,066 INFO L93 Difference]: Finished difference Result 1524 states and 2177 transitions. [2024-11-27 20:25:14,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:25:14,066 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 184 [2024-11-27 20:25:14,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:14,071 INFO L225 Difference]: With dead ends: 1524 [2024-11-27 20:25:14,071 INFO L226 Difference]: Without dead ends: 1026 [2024-11-27 20:25:14,072 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:25:14,073 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 120 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 579 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:14,073 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 579 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:25:14,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2024-11-27 20:25:14,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 972. [2024-11-27 20:25:14,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 972 states, 827 states have (on average 1.3119709794437726) internal successors, (1085), 827 states have internal predecessors, (1085), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:25:14,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 972 states to 972 states and 1355 transitions. [2024-11-27 20:25:14,163 INFO L78 Accepts]: Start accepts. Automaton has 972 states and 1355 transitions. Word has length 184 [2024-11-27 20:25:14,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:14,164 INFO L471 AbstractCegarLoop]: Abstraction has 972 states and 1355 transitions. [2024-11-27 20:25:14,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:25:14,164 INFO L276 IsEmpty]: Start isEmpty. Operand 972 states and 1355 transitions. [2024-11-27 20:25:14,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2024-11-27 20:25:14,166 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:14,166 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:14,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 20:25:14,167 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:14,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:14,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1000289820, now seen corresponding path program 1 times [2024-11-27 20:25:14,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:14,167 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [114261347] [2024-11-27 20:25:14,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:14,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:14,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:14,465 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:25:14,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:14,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [114261347] [2024-11-27 20:25:14,465 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [114261347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:14,465 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:14,465 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:14,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769534089] [2024-11-27 20:25:14,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:14,466 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:14,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:14,466 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:14,466 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:14,466 INFO L87 Difference]: Start difference. First operand 972 states and 1355 transitions. Second operand has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:25:14,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:14,905 INFO L93 Difference]: Finished difference Result 1636 states and 2294 transitions. [2024-11-27 20:25:14,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:14,905 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 184 [2024-11-27 20:25:14,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:14,909 INFO L225 Difference]: With dead ends: 1636 [2024-11-27 20:25:14,909 INFO L226 Difference]: Without dead ends: 1025 [2024-11-27 20:25:14,910 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:25:14,910 INFO L435 NwaCegarLoop]: 122 mSDtfsCounter, 117 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 416 SdHoareTripleChecker+Invalid, 248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:14,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 416 Invalid, 248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 20:25:14,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2024-11-27 20:25:14,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 971. [2024-11-27 20:25:14,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 971 states, 826 states have (on average 1.311138014527845) internal successors, (1083), 826 states have internal predecessors, (1083), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:25:14,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 971 states to 971 states and 1353 transitions. [2024-11-27 20:25:14,970 INFO L78 Accepts]: Start accepts. Automaton has 971 states and 1353 transitions. Word has length 184 [2024-11-27 20:25:14,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:14,970 INFO L471 AbstractCegarLoop]: Abstraction has 971 states and 1353 transitions. [2024-11-27 20:25:14,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.4) internal successors, (52), 5 states have internal predecessors, (52), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:25:14,970 INFO L276 IsEmpty]: Start isEmpty. Operand 971 states and 1353 transitions. [2024-11-27 20:25:14,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2024-11-27 20:25:14,971 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:14,972 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:14,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 20:25:14,972 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:14,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:14,972 INFO L85 PathProgramCache]: Analyzing trace with hash 523266016, now seen corresponding path program 1 times [2024-11-27 20:25:14,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:14,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526553398] [2024-11-27 20:25:14,972 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:14,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:15,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:17,022 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:25:17,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:17,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526553398] [2024-11-27 20:25:17,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526553398] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:17,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:17,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:25:17,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58519301] [2024-11-27 20:25:17,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:17,023 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:25:17,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:17,023 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:25:17,023 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:25:17,024 INFO L87 Difference]: Start difference. First operand 971 states and 1353 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:25:18,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:18,429 INFO L93 Difference]: Finished difference Result 1793 states and 2488 transitions. [2024-11-27 20:25:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:25:18,430 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 185 [2024-11-27 20:25:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:18,434 INFO L225 Difference]: With dead ends: 1793 [2024-11-27 20:25:18,434 INFO L226 Difference]: Without dead ends: 1021 [2024-11-27 20:25:18,436 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:25:18,437 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 201 mSDsluCounter, 479 mSDsCounter, 0 mSdLazyCounter, 578 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 664 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:18,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 612 Invalid, 664 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 578 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-27 20:25:18,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1021 states. [2024-11-27 20:25:18,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1021 to 863. [2024-11-27 20:25:18,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 863 states, 718 states have (on average 1.3105849582172702) internal successors, (941), 718 states have internal predecessors, (941), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:25:18,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 863 states to 863 states and 1211 transitions. [2024-11-27 20:25:18,505 INFO L78 Accepts]: Start accepts. Automaton has 863 states and 1211 transitions. Word has length 185 [2024-11-27 20:25:18,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:18,505 INFO L471 AbstractCegarLoop]: Abstraction has 863 states and 1211 transitions. [2024-11-27 20:25:18,505 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:25:18,505 INFO L276 IsEmpty]: Start isEmpty. Operand 863 states and 1211 transitions. [2024-11-27 20:25:18,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2024-11-27 20:25:18,506 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:18,506 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:18,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-27 20:25:18,506 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:18,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:18,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1678654235, now seen corresponding path program 1 times [2024-11-27 20:25:18,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:18,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204713794] [2024-11-27 20:25:18,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:18,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:18,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:25:18,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:18,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204713794] [2024-11-27 20:25:18,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204713794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:18,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:18,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 20:25:18,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085329214] [2024-11-27 20:25:18,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:18,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 20:25:18,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:18,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 20:25:18,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 20:25:18,732 INFO L87 Difference]: Start difference. First operand 863 states and 1211 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:25:19,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:19,369 INFO L93 Difference]: Finished difference Result 1435 states and 2045 transitions. [2024-11-27 20:25:19,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 20:25:19,370 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 187 [2024-11-27 20:25:19,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:19,374 INFO L225 Difference]: With dead ends: 1435 [2024-11-27 20:25:19,375 INFO L226 Difference]: Without dead ends: 933 [2024-11-27 20:25:19,376 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:25:19,377 INFO L435 NwaCegarLoop]: 147 mSDtfsCounter, 126 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 345 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:19,377 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 634 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 345 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:25:19,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2024-11-27 20:25:19,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 851. [2024-11-27 20:25:19,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 851 states, 706 states have (on average 1.3101983002832862) internal successors, (925), 706 states have internal predecessors, (925), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:25:19,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 851 states to 851 states and 1195 transitions. [2024-11-27 20:25:19,460 INFO L78 Accepts]: Start accepts. Automaton has 851 states and 1195 transitions. Word has length 187 [2024-11-27 20:25:19,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:19,460 INFO L471 AbstractCegarLoop]: Abstraction has 851 states and 1195 transitions. [2024-11-27 20:25:19,460 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:25:19,461 INFO L276 IsEmpty]: Start isEmpty. Operand 851 states and 1195 transitions. [2024-11-27 20:25:19,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2024-11-27 20:25:19,462 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:19,462 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:19,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-27 20:25:19,462 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:19,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:19,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1653427360, now seen corresponding path program 1 times [2024-11-27 20:25:19,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:19,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927414076] [2024-11-27 20:25:19,463 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:19,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:19,562 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:25:19,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:19,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927414076] [2024-11-27 20:25:19,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927414076] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:19,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:19,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:25:19,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953433000] [2024-11-27 20:25:19,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:19,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:25:19,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:19,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:25:19,564 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:25:19,564 INFO L87 Difference]: Start difference. First operand 851 states and 1195 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:25:19,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:19,707 INFO L93 Difference]: Finished difference Result 1607 states and 2313 transitions. [2024-11-27 20:25:19,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:25:19,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 188 [2024-11-27 20:25:19,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:19,714 INFO L225 Difference]: With dead ends: 1607 [2024-11-27 20:25:19,714 INFO L226 Difference]: Without dead ends: 1089 [2024-11-27 20:25:19,715 INFO L434 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 [2024-11-27 20:25:19,716 INFO L435 NwaCegarLoop]: 154 mSDtfsCounter, 36 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:19,716 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 266 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:25:19,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2024-11-27 20:25:19,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 993. [2024-11-27 20:25:19,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 848 states have (on average 1.3478773584905661) internal successors, (1143), 848 states have internal predecessors, (1143), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:25:19,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1413 transitions. [2024-11-27 20:25:19,795 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1413 transitions. Word has length 188 [2024-11-27 20:25:19,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:19,795 INFO L471 AbstractCegarLoop]: Abstraction has 993 states and 1413 transitions. [2024-11-27 20:25:19,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:25:19,796 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1413 transitions. [2024-11-27 20:25:19,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-27 20:25:19,796 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:19,796 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:19,797 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-27 20:25:19,797 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:19,797 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:19,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1788045695, now seen corresponding path program 1 times [2024-11-27 20:25:19,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:19,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822623024] [2024-11-27 20:25:19,797 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:19,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:19,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:02,728 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:26:02,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:02,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822623024] [2024-11-27 20:26:02,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822623024] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:02,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:02,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-27 20:26:02,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210405830] [2024-11-27 20:26:02,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:02,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 20:26:02,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:02,729 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 20:26:02,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:26:02,730 INFO L87 Difference]: Start difference. First operand 993 states and 1413 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:26:08,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:08,927 INFO L93 Difference]: Finished difference Result 1225 states and 1662 transitions. [2024-11-27 20:26:08,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 20:26:08,928 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 190 [2024-11-27 20:26:08,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:08,934 INFO L225 Difference]: With dead ends: 1225 [2024-11-27 20:26:08,934 INFO L226 Difference]: Without dead ends: 1223 [2024-11-27 20:26:08,935 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 356 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=420, Invalid=1650, Unknown=0, NotChecked=0, Total=2070 [2024-11-27 20:26:08,937 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 515 mSDsluCounter, 792 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 137 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 515 SdHoareTripleChecker+Valid, 902 SdHoareTripleChecker+Invalid, 1327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 137 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:08,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [515 Valid, 902 Invalid, 1327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [137 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-27 20:26:08,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2024-11-27 20:26:09,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1008. [2024-11-27 20:26:09,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1008 states, 863 states have (on average 1.3453070683661645) internal successors, (1161), 863 states have internal predecessors, (1161), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:26:09,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1008 states to 1008 states and 1431 transitions. [2024-11-27 20:26:09,015 INFO L78 Accepts]: Start accepts. Automaton has 1008 states and 1431 transitions. Word has length 190 [2024-11-27 20:26:09,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:09,016 INFO L471 AbstractCegarLoop]: Abstraction has 1008 states and 1431 transitions. [2024-11-27 20:26:09,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:26:09,016 INFO L276 IsEmpty]: Start isEmpty. Operand 1008 states and 1431 transitions. [2024-11-27 20:26:09,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-27 20:26:09,017 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:09,017 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:09,018 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-27 20:26:09,018 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:09,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:09,018 INFO L85 PathProgramCache]: Analyzing trace with hash 1850085309, now seen corresponding path program 1 times [2024-11-27 20:26:09,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:09,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787740882] [2024-11-27 20:26:09,018 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:09,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:09,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:51,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:26:51,631 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:51,631 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787740882] [2024-11-27 20:26:51,631 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787740882] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:51,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:51,632 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-27 20:26:51,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958096760] [2024-11-27 20:26:51,632 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:51,632 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 20:26:51,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:51,633 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 20:26:51,633 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:26:51,633 INFO L87 Difference]: Start difference. First operand 1008 states and 1431 transitions. Second operand has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:26:57,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:26:57,699 INFO L93 Difference]: Finished difference Result 1271 states and 1713 transitions. [2024-11-27 20:26:57,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-27 20:26:57,700 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 190 [2024-11-27 20:26:57,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:26:57,705 INFO L225 Difference]: With dead ends: 1271 [2024-11-27 20:26:57,705 INFO L226 Difference]: Without dead ends: 1269 [2024-11-27 20:26:57,706 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=336, Invalid=1556, Unknown=0, NotChecked=0, Total=1892 [2024-11-27 20:26:57,707 INFO L435 NwaCegarLoop]: 110 mSDtfsCounter, 394 mSDsluCounter, 835 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 394 SdHoareTripleChecker+Valid, 945 SdHoareTripleChecker+Invalid, 1459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:26:57,707 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [394 Valid, 945 Invalid, 1459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-27 20:26:57,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1269 states. [2024-11-27 20:26:57,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1269 to 1023. [2024-11-27 20:26:57,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1023 states, 878 states have (on average 1.3428246013667426) internal successors, (1179), 878 states have internal predecessors, (1179), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:26:57,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1023 states to 1023 states and 1449 transitions. [2024-11-27 20:26:57,799 INFO L78 Accepts]: Start accepts. Automaton has 1023 states and 1449 transitions. Word has length 190 [2024-11-27 20:26:57,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:26:57,799 INFO L471 AbstractCegarLoop]: Abstraction has 1023 states and 1449 transitions. [2024-11-27 20:26:57,799 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.2222222222222223) internal successors, (58), 18 states have internal predecessors, (58), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:26:57,799 INFO L276 IsEmpty]: Start isEmpty. Operand 1023 states and 1449 transitions. [2024-11-27 20:26:57,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2024-11-27 20:26:57,801 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:26:57,801 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:26:57,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-27 20:26:57,801 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:26:57,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:26:57,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1420971839, now seen corresponding path program 1 times [2024-11-27 20:26:57,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:26:57,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824772225] [2024-11-27 20:26:57,802 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:26:57,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:26:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:26:58,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:26:58,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:26:58,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824772225] [2024-11-27 20:26:58,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824772225] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:26:58,533 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:26:58,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-27 20:26:58,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [426618995] [2024-11-27 20:26:58,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:26:58,533 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:26:58,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:26:58,534 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:26:58,534 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:26:58,534 INFO L87 Difference]: Start difference. First operand 1023 states and 1449 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:27:00,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:00,622 INFO L93 Difference]: Finished difference Result 1903 states and 2685 transitions. [2024-11-27 20:27:00,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:27:00,623 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 190 [2024-11-27 20:27:00,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:00,628 INFO L225 Difference]: With dead ends: 1903 [2024-11-27 20:27:00,628 INFO L226 Difference]: Without dead ends: 1217 [2024-11-27 20:27:00,630 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:27:00,631 INFO L435 NwaCegarLoop]: 169 mSDtfsCounter, 166 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 836 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 921 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:00,631 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 962 Invalid, 921 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 836 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 20:27:00,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2024-11-27 20:27:00,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 1047. [2024-11-27 20:27:00,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 902 states have (on average 1.3337028824833703) internal successors, (1203), 902 states have internal predecessors, (1203), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:27:00,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1473 transitions. [2024-11-27 20:27:00,749 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1473 transitions. Word has length 190 [2024-11-27 20:27:00,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:00,750 INFO L471 AbstractCegarLoop]: Abstraction has 1047 states and 1473 transitions. [2024-11-27 20:27:00,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:27:00,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1473 transitions. [2024-11-27 20:27:00,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-27 20:27:00,751 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:00,751 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:00,752 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-27 20:27:00,752 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:00,752 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:00,752 INFO L85 PathProgramCache]: Analyzing trace with hash -253531223, now seen corresponding path program 1 times [2024-11-27 20:27:00,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:00,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [414203288] [2024-11-27 20:27:00,753 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:00,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:00,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:02,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:27:02,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:02,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [414203288] [2024-11-27 20:27:02,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [414203288] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:27:02,925 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:27:02,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-27 20:27:02,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684800178] [2024-11-27 20:27:02,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:27:02,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 20:27:02,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:02,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 20:27:02,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-11-27 20:27:02,927 INFO L87 Difference]: Start difference. First operand 1047 states and 1473 transitions. Second operand has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:27:04,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:04,393 INFO L93 Difference]: Finished difference Result 1851 states and 2625 transitions. [2024-11-27 20:27:04,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 20:27:04,393 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 191 [2024-11-27 20:27:04,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:04,397 INFO L225 Difference]: With dead ends: 1851 [2024-11-27 20:27:04,397 INFO L226 Difference]: Without dead ends: 1149 [2024-11-27 20:27:04,398 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:27:04,399 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 351 mSDsluCounter, 606 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 351 SdHoareTripleChecker+Valid, 719 SdHoareTripleChecker+Invalid, 777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:04,399 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [351 Valid, 719 Invalid, 777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 20:27:04,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2024-11-27 20:27:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1067. [2024-11-27 20:27:04,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1067 states, 922 states have (on average 1.32646420824295) internal successors, (1223), 922 states have internal predecessors, (1223), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:27:04,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1067 states to 1067 states and 1493 transitions. [2024-11-27 20:27:04,515 INFO L78 Accepts]: Start accepts. Automaton has 1067 states and 1493 transitions. Word has length 191 [2024-11-27 20:27:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:04,515 INFO L471 AbstractCegarLoop]: Abstraction has 1067 states and 1493 transitions. [2024-11-27 20:27:04,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.538461538461538) internal successors, (59), 13 states have internal predecessors, (59), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:27:04,516 INFO L276 IsEmpty]: Start isEmpty. Operand 1067 states and 1493 transitions. [2024-11-27 20:27:04,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-27 20:27:04,517 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:04,517 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:04,517 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-27 20:27:04,517 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:04,518 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:04,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1274599577, now seen corresponding path program 1 times [2024-11-27 20:27:04,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:04,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894309279] [2024-11-27 20:27:04,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:04,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:04,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:27:52,782 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:27:52,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:27:52,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894309279] [2024-11-27 20:27:52,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894309279] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:27:52,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:27:52,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-27 20:27:52,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951249094] [2024-11-27 20:27:52,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:27:52,783 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:27:52,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:27:52,784 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:27:52,784 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:27:52,784 INFO L87 Difference]: Start difference. First operand 1067 states and 1493 transitions. Second operand has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:27:59,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:27:59,453 INFO L93 Difference]: Finished difference Result 1261 states and 1697 transitions. [2024-11-27 20:27:59,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-27 20:27:59,454 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 191 [2024-11-27 20:27:59,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:27:59,458 INFO L225 Difference]: With dead ends: 1261 [2024-11-27 20:27:59,458 INFO L226 Difference]: Without dead ends: 1259 [2024-11-27 20:27:59,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 5.0s TimeCoverageRelationStatistics Valid=491, Invalid=1861, Unknown=0, NotChecked=0, Total=2352 [2024-11-27 20:27:59,460 INFO L435 NwaCegarLoop]: 114 mSDtfsCounter, 392 mSDsluCounter, 1054 mSDsCounter, 0 mSdLazyCounter, 1810 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1810 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:27:59,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1168 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1810 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-27 20:27:59,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1259 states. [2024-11-27 20:27:59,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1259 to 1074. [2024-11-27 20:27:59,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1074 states, 929 states have (on average 1.3229278794402584) internal successors, (1229), 929 states have internal predecessors, (1229), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:27:59,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1074 states to 1074 states and 1499 transitions. [2024-11-27 20:27:59,577 INFO L78 Accepts]: Start accepts. Automaton has 1074 states and 1499 transitions. Word has length 191 [2024-11-27 20:27:59,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:27:59,577 INFO L471 AbstractCegarLoop]: Abstraction has 1074 states and 1499 transitions. [2024-11-27 20:27:59,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 2.95) internal successors, (59), 20 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:27:59,578 INFO L276 IsEmpty]: Start isEmpty. Operand 1074 states and 1499 transitions. [2024-11-27 20:27:59,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-27 20:27:59,579 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:27:59,579 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:27:59,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-27 20:27:59,580 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:27:59,580 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:27:59,580 INFO L85 PathProgramCache]: Analyzing trace with hash 648628457, now seen corresponding path program 1 times [2024-11-27 20:27:59,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:27:59,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546008812] [2024-11-27 20:27:59,580 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:27:59,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:27:59,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:28:48,974 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:28:48,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:28:48,975 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546008812] [2024-11-27 20:28:48,975 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546008812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:28:48,975 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:28:48,975 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2024-11-27 20:28:48,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337992177] [2024-11-27 20:28:48,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:28:48,976 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 20:28:48,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:28:48,976 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 20:28:48,977 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=372, Unknown=0, NotChecked=0, Total=420 [2024-11-27 20:28:48,977 INFO L87 Difference]: Start difference. First operand 1074 states and 1499 transitions. Second operand has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:29:01,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:01,284 INFO L93 Difference]: Finished difference Result 1295 states and 1731 transitions. [2024-11-27 20:29:01,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-27 20:29:01,284 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 191 [2024-11-27 20:29:01,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:01,287 INFO L225 Difference]: With dead ends: 1295 [2024-11-27 20:29:01,287 INFO L226 Difference]: Without dead ends: 1293 [2024-11-27 20:29:01,289 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 10.0s TimeCoverageRelationStatistics Valid=462, Invalid=1890, Unknown=0, NotChecked=0, Total=2352 [2024-11-27 20:29:01,289 INFO L435 NwaCegarLoop]: 113 mSDtfsCounter, 497 mSDsluCounter, 884 mSDsCounter, 0 mSdLazyCounter, 1735 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 497 SdHoareTripleChecker+Valid, 997 SdHoareTripleChecker+Invalid, 1873 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 1735 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:01,289 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [497 Valid, 997 Invalid, 1873 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 1735 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-27 20:29:01,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2024-11-27 20:29:01,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1081. [2024-11-27 20:29:01,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1081 states, 936 states have (on average 1.3194444444444444) internal successors, (1235), 936 states have internal predecessors, (1235), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:29:01,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1081 states to 1081 states and 1505 transitions. [2024-11-27 20:29:01,414 INFO L78 Accepts]: Start accepts. Automaton has 1081 states and 1505 transitions. Word has length 191 [2024-11-27 20:29:01,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:01,415 INFO L471 AbstractCegarLoop]: Abstraction has 1081 states and 1505 transitions. [2024-11-27 20:29:01,415 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.8095238095238093) internal successors, (59), 21 states have internal predecessors, (59), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:29:01,415 INFO L276 IsEmpty]: Start isEmpty. Operand 1081 states and 1505 transitions. [2024-11-27 20:29:01,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-27 20:29:01,416 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:01,417 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:01,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-27 20:29:01,417 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:01,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:01,417 INFO L85 PathProgramCache]: Analyzing trace with hash -671367594, now seen corresponding path program 1 times [2024-11-27 20:29:01,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:01,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487073908] [2024-11-27 20:29:01,418 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:01,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:01,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:29:44,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:29:44,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:29:44,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487073908] [2024-11-27 20:29:44,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1487073908] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:29:44,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:29:44,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2024-11-27 20:29:44,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346345832] [2024-11-27 20:29:44,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:29:44,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-27 20:29:44,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:29:44,786 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-27 20:29:44,787 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2024-11-27 20:29:44,787 INFO L87 Difference]: Start difference. First operand 1081 states and 1505 transitions. Second operand has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:29:49,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:29:49,137 INFO L93 Difference]: Finished difference Result 1216 states and 1647 transitions. [2024-11-27 20:29:49,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 20:29:49,138 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 194 [2024-11-27 20:29:49,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:29:49,141 INFO L225 Difference]: With dead ends: 1216 [2024-11-27 20:29:49,141 INFO L226 Difference]: Without dead ends: 1214 [2024-11-27 20:29:49,141 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 166 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=224, Invalid=898, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 20:29:49,141 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 324 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 1640 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 1284 SdHoareTripleChecker+Invalid, 1744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1640 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:29:49,141 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 1284 Invalid, 1744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 1640 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-27 20:29:49,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1214 states. [2024-11-27 20:29:49,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1214 to 1082. [2024-11-27 20:29:49,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1082 states, 937 states have (on average 1.32017075773746) internal successors, (1237), 937 states have internal predecessors, (1237), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:29:49,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1082 states to 1082 states and 1507 transitions. [2024-11-27 20:29:49,210 INFO L78 Accepts]: Start accepts. Automaton has 1082 states and 1507 transitions. Word has length 194 [2024-11-27 20:29:49,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:29:49,210 INFO L471 AbstractCegarLoop]: Abstraction has 1082 states and 1507 transitions. [2024-11-27 20:29:49,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 18 states have internal predecessors, (62), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:29:49,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1082 states and 1507 transitions. [2024-11-27 20:29:49,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-27 20:29:49,213 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:29:49,213 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:29:49,213 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-27 20:29:49,213 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:29:49,214 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:29:49,214 INFO L85 PathProgramCache]: Analyzing trace with hash -609327980, now seen corresponding path program 1 times [2024-11-27 20:29:49,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:29:49,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [281719286] [2024-11-27 20:29:49,214 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:29:49,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:29:49,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:32,317 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:30:32,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:32,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [281719286] [2024-11-27 20:30:32,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [281719286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:32,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:32,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2024-11-27 20:30:32,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435594167] [2024-11-27 20:30:32,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:32,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-27 20:30:32,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:32,322 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-27 20:30:32,322 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:30:32,323 INFO L87 Difference]: Start difference. First operand 1082 states and 1507 transitions. Second operand has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:30:36,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:36,393 INFO L93 Difference]: Finished difference Result 1233 states and 1667 transitions. [2024-11-27 20:30:36,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 20:30:36,393 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 194 [2024-11-27 20:30:36,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:36,399 INFO L225 Difference]: With dead ends: 1233 [2024-11-27 20:30:36,399 INFO L226 Difference]: Without dead ends: 1231 [2024-11-27 20:30:36,400 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=181, Invalid=749, Unknown=0, NotChecked=0, Total=930 [2024-11-27 20:30:36,400 INFO L435 NwaCegarLoop]: 133 mSDtfsCounter, 307 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 1354 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1044 SdHoareTripleChecker+Invalid, 1487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:36,400 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1044 Invalid, 1487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1354 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 20:30:36,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2024-11-27 20:30:36,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1083. [2024-11-27 20:30:36,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1083 states, 938 states have (on average 1.3208955223880596) internal successors, (1239), 938 states have internal predecessors, (1239), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:30:36,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1083 states to 1083 states and 1509 transitions. [2024-11-27 20:30:36,539 INFO L78 Accepts]: Start accepts. Automaton has 1083 states and 1509 transitions. Word has length 194 [2024-11-27 20:30:36,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:36,539 INFO L471 AbstractCegarLoop]: Abstraction has 1083 states and 1509 transitions. [2024-11-27 20:30:36,539 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.6470588235294117) internal successors, (62), 17 states have internal predecessors, (62), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:30:36,539 INFO L276 IsEmpty]: Start isEmpty. Operand 1083 states and 1509 transitions. [2024-11-27 20:30:36,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2024-11-27 20:30:36,541 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:36,541 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:36,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-27 20:30:36,541 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:36,542 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:36,542 INFO L85 PathProgramCache]: Analyzing trace with hash 1251860440, now seen corresponding path program 1 times [2024-11-27 20:30:36,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:36,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184274645] [2024-11-27 20:30:36,542 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:36,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:36,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:30:37,050 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:30:37,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:30:37,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184274645] [2024-11-27 20:30:37,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184274645] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:30:37,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:30:37,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-27 20:30:37,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452753745] [2024-11-27 20:30:37,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:30:37,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:30:37,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:30:37,052 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:30:37,052 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:30:37,053 INFO L87 Difference]: Start difference. First operand 1083 states and 1509 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:30:37,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:30:37,882 INFO L93 Difference]: Finished difference Result 1859 states and 2629 transitions. [2024-11-27 20:30:37,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-27 20:30:37,882 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) Word has length 194 [2024-11-27 20:30:37,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:30:37,885 INFO L225 Difference]: With dead ends: 1859 [2024-11-27 20:30:37,885 INFO L226 Difference]: Without dead ends: 1116 [2024-11-27 20:30:37,886 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-27 20:30:37,887 INFO L435 NwaCegarLoop]: 145 mSDtfsCounter, 143 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 690 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 20:30:37,887 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 690 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 20:30:37,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1116 states. [2024-11-27 20:30:37,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1116 to 1026. [2024-11-27 20:30:37,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1026 states, 881 states have (on average 1.3314415437003406) internal successors, (1173), 881 states have internal predecessors, (1173), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:30:37,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1026 states to 1026 states and 1443 transitions. [2024-11-27 20:30:37,972 INFO L78 Accepts]: Start accepts. Automaton has 1026 states and 1443 transitions. Word has length 194 [2024-11-27 20:30:37,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:30:37,973 INFO L471 AbstractCegarLoop]: Abstraction has 1026 states and 1443 transitions. [2024-11-27 20:30:37,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 8 states have internal predecessors, (62), 1 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 1 states have call predecessors, (27), 1 states have call successors, (27) [2024-11-27 20:30:37,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1026 states and 1443 transitions. [2024-11-27 20:30:37,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-27 20:30:37,975 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:30:37,975 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:30:37,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-27 20:30:37,975 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:30:37,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:30:37,976 INFO L85 PathProgramCache]: Analyzing trace with hash -207000208, now seen corresponding path program 1 times [2024-11-27 20:30:37,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:30:37,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661796065] [2024-11-27 20:30:37,976 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:30:37,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:30:38,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:31:22,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:31:22,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:31:22,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661796065] [2024-11-27 20:31:22,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661796065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:31:22,507 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:31:22,507 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2024-11-27 20:31:22,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33919173] [2024-11-27 20:31:22,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:31:22,508 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 20:31:22,508 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:31:22,508 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 20:31:22,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:31:22,509 INFO L87 Difference]: Start difference. First operand 1026 states and 1443 transitions. Second operand has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:31:27,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:31:27,025 INFO L93 Difference]: Finished difference Result 1124 states and 1545 transitions. [2024-11-27 20:31:27,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:31:27,026 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 195 [2024-11-27 20:31:27,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:31:27,031 INFO L225 Difference]: With dead ends: 1124 [2024-11-27 20:31:27,031 INFO L226 Difference]: Without dead ends: 1122 [2024-11-27 20:31:27,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=227, Invalid=895, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 20:31:27,032 INFO L435 NwaCegarLoop]: 135 mSDtfsCounter, 409 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 1469 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1054 SdHoareTripleChecker+Invalid, 1601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 1469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-27 20:31:27,033 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [409 Valid, 1054 Invalid, 1601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 1469 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-27 20:31:27,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1122 states. [2024-11-27 20:31:27,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1122 to 1011. [2024-11-27 20:31:27,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1011 states, 866 states have (on average 1.333718244803695) internal successors, (1155), 866 states have internal predecessors, (1155), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:31:27,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1011 states to 1011 states and 1425 transitions. [2024-11-27 20:31:27,123 INFO L78 Accepts]: Start accepts. Automaton has 1011 states and 1425 transitions. Word has length 195 [2024-11-27 20:31:27,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:31:27,124 INFO L471 AbstractCegarLoop]: Abstraction has 1011 states and 1425 transitions. [2024-11-27 20:31:27,124 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 19 states have internal predecessors, (63), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:31:27,124 INFO L276 IsEmpty]: Start isEmpty. Operand 1011 states and 1425 transitions. [2024-11-27 20:31:27,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-11-27 20:31:27,126 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:31:27,126 INFO L218 NwaCegarLoop]: trace histogram [27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:31:27,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-27 20:31:27,127 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:31:27,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:31:27,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1716227826, now seen corresponding path program 1 times [2024-11-27 20:31:27,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:31:27,128 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687147176] [2024-11-27 20:31:27,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:31:27,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:31:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:15,912 INFO L134 CoverageAnalysis]: Checked inductivity of 1404 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1404 trivial. 0 not checked. [2024-11-27 20:32:15,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:15,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687147176] [2024-11-27 20:32:15,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687147176] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:32:15,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:32:15,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2024-11-27 20:32:15,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472972366] [2024-11-27 20:32:15,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:32:15,913 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:32:15,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:15,914 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:32:15,914 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=334, Unknown=0, NotChecked=0, Total=380 [2024-11-27 20:32:15,914 INFO L87 Difference]: Start difference. First operand 1011 states and 1425 transitions. Second operand has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:32:20,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:20,473 INFO L93 Difference]: Finished difference Result 1120 states and 1540 transitions. [2024-11-27 20:32:20,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 20:32:20,473 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 195 [2024-11-27 20:32:20,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:20,476 INFO L225 Difference]: With dead ends: 1120 [2024-11-27 20:32:20,476 INFO L226 Difference]: Without dead ends: 1118 [2024-11-27 20:32:20,477 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=224, Invalid=966, Unknown=0, NotChecked=0, Total=1190 [2024-11-27 20:32:20,478 INFO L435 NwaCegarLoop]: 136 mSDtfsCounter, 285 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 1827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:20,478 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [285 Valid, 1114 Invalid, 1827 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 1694 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-27 20:32:20,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118 states. [2024-11-27 20:32:20,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118 to 996. [2024-11-27 20:32:20,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 996 states, 851 states have (on average 1.336075205640423) internal successors, (1137), 851 states have internal predecessors, (1137), 135 states have call successors, (135), 9 states have call predecessors, (135), 9 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2024-11-27 20:32:20,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 996 states to 996 states and 1407 transitions. [2024-11-27 20:32:20,546 INFO L78 Accepts]: Start accepts. Automaton has 996 states and 1407 transitions. Word has length 195 [2024-11-27 20:32:20,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:20,546 INFO L471 AbstractCegarLoop]: Abstraction has 996 states and 1407 transitions. [2024-11-27 20:32:20,546 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 3.15) internal successors, (63), 20 states have internal predecessors, (63), 2 states have call successors, (27), 1 states have call predecessors, (27), 1 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2024-11-27 20:32:20,547 INFO L276 IsEmpty]: Start isEmpty. Operand 996 states and 1407 transitions. [2024-11-27 20:32:20,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-11-27 20:32:20,548 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:20,549 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:20,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-11-27 20:32:20,549 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:20,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:20,549 INFO L85 PathProgramCache]: Analyzing trace with hash 1850231995, now seen corresponding path program 1 times [2024-11-27 20:32:20,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:20,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317248469] [2024-11-27 20:32:20,550 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:20,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:20,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:21,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 64 proven. 2 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-11-27 20:32:21,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:21,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317248469] [2024-11-27 20:32:21,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317248469] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:21,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059710594] [2024-11-27 20:32:21,128 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:21,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:21,128 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:21,134 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:21,136 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:32:21,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:21,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:32:21,385 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:21,761 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 2980 proven. 2 refuted. 0 times theorem prover too weak. 2808 trivial. 0 not checked. [2024-11-27 20:32:21,762 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:22,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 65 proven. 1 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-11-27 20:32:22,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059710594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:32:22,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:32:22,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 4] total 10 [2024-11-27 20:32:22,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328679567] [2024-11-27 20:32:22,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:32:22,286 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-27 20:32:22,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:22,287 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-27 20:32:22,287 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-11-27 20:32:22,288 INFO L87 Difference]: Start difference. First operand 996 states and 1407 transitions. Second operand has 10 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 4 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) [2024-11-27 20:32:23,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:23,013 INFO L93 Difference]: Finished difference Result 3320 states and 4755 transitions. [2024-11-27 20:32:23,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-27 20:32:23,013 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 4 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) Word has length 357 [2024-11-27 20:32:23,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:23,023 INFO L225 Difference]: With dead ends: 3320 [2024-11-27 20:32:23,023 INFO L226 Difference]: Without dead ends: 2980 [2024-11-27 20:32:23,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 729 GetRequests, 714 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2024-11-27 20:32:23,025 INFO L435 NwaCegarLoop]: 172 mSDtfsCounter, 901 mSDsluCounter, 641 mSDsCounter, 0 mSdLazyCounter, 239 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:23,025 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 813 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 239 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 20:32:23,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2980 states. [2024-11-27 20:32:23,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2980 to 1602. [2024-11-27 20:32:23,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1602 states, 1405 states have (on average 1.3451957295373667) internal successors, (1890), 1409 states have internal predecessors, (1890), 179 states have call successors, (179), 17 states have call predecessors, (179), 17 states have return successors, (179), 175 states have call predecessors, (179), 179 states have call successors, (179) [2024-11-27 20:32:23,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1602 states to 1602 states and 2248 transitions. [2024-11-27 20:32:23,240 INFO L78 Accepts]: Start accepts. Automaton has 1602 states and 2248 transitions. Word has length 357 [2024-11-27 20:32:23,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:23,241 INFO L471 AbstractCegarLoop]: Abstraction has 1602 states and 2248 transitions. [2024-11-27 20:32:23,241 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 18.4) internal successors, (184), 10 states have internal predecessors, (184), 4 states have call successors, (108), 2 states have call predecessors, (108), 2 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) [2024-11-27 20:32:23,241 INFO L276 IsEmpty]: Start isEmpty. Operand 1602 states and 2248 transitions. [2024-11-27 20:32:23,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-11-27 20:32:23,245 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:23,246 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:23,260 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 20:32:23,446 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2024-11-27 20:32:23,446 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:23,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:23,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1776647417, now seen corresponding path program 1 times [2024-11-27 20:32:23,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:23,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1544489096] [2024-11-27 20:32:23,447 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:23,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:23,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:24,078 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 16 proven. 50 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-11-27 20:32:24,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:24,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1544489096] [2024-11-27 20:32:24,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1544489096] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:24,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460537817] [2024-11-27 20:32:24,079 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:24,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:24,079 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:24,081 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:24,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:32:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:24,297 INFO L256 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-27 20:32:24,314 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:24,842 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 721 proven. 3014 refuted. 0 times theorem prover too weak. 2055 trivial. 0 not checked. [2024-11-27 20:32:24,842 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:25,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 161 proven. 45 refuted. 0 times theorem prover too weak. 5584 trivial. 0 not checked. [2024-11-27 20:32:25,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460537817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:32:25,254 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:32:25,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 6] total 19 [2024-11-27 20:32:25,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657041672] [2024-11-27 20:32:25,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:32:25,255 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 20:32:25,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:25,256 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 20:32:25,256 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2024-11-27 20:32:25,257 INFO L87 Difference]: Start difference. First operand 1602 states and 2248 transitions. Second operand has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 19 states have internal predecessors, (200), 5 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (140), 5 states have call predecessors, (140), 5 states have call successors, (140) [2024-11-27 20:32:28,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:28,640 INFO L93 Difference]: Finished difference Result 4338 states and 6166 transitions. [2024-11-27 20:32:28,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2024-11-27 20:32:28,645 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 19 states have internal predecessors, (200), 5 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (140), 5 states have call predecessors, (140), 5 states have call successors, (140) Word has length 357 [2024-11-27 20:32:28,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:28,658 INFO L225 Difference]: With dead ends: 4338 [2024-11-27 20:32:28,658 INFO L226 Difference]: Without dead ends: 3046 [2024-11-27 20:32:28,662 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 778 GetRequests, 716 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1108 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=675, Invalid=3231, Unknown=0, NotChecked=0, Total=3906 [2024-11-27 20:32:28,666 INFO L435 NwaCegarLoop]: 215 mSDtfsCounter, 3368 mSDsluCounter, 1724 mSDsCounter, 0 mSdLazyCounter, 1642 mSolverCounterSat, 1115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3369 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 2757 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1115 IncrementalHoareTripleChecker+Valid, 1642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:28,666 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3369 Valid, 1939 Invalid, 2757 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1115 Valid, 1642 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-27 20:32:28,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3046 states. [2024-11-27 20:32:29,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3046 to 2106. [2024-11-27 20:32:29,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 1771 states have (on average 1.3297571993224166) internal successors, (2355), 1776 states have internal predecessors, (2355), 298 states have call successors, (298), 36 states have call predecessors, (298), 36 states have return successors, (298), 293 states have call predecessors, (298), 298 states have call successors, (298) [2024-11-27 20:32:29,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 2951 transitions. [2024-11-27 20:32:29,009 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 2951 transitions. Word has length 357 [2024-11-27 20:32:29,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:29,012 INFO L471 AbstractCegarLoop]: Abstraction has 2106 states and 2951 transitions. [2024-11-27 20:32:29,012 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 10.526315789473685) internal successors, (200), 19 states have internal predecessors, (200), 5 states have call successors, (138), 3 states have call predecessors, (138), 5 states have return successors, (140), 5 states have call predecessors, (140), 5 states have call successors, (140) [2024-11-27 20:32:29,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 2951 transitions. [2024-11-27 20:32:29,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-27 20:32:29,018 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:29,018 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:29,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 20:32:29,218 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-11-27 20:32:29,219 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:29,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:29,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1440789085, now seen corresponding path program 1 times [2024-11-27 20:32:29,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:29,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537191597] [2024-11-27 20:32:29,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:29,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:29,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 16 proven. 50 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-11-27 20:32:29,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:29,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537191597] [2024-11-27 20:32:29,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537191597] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:29,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285519303] [2024-11-27 20:32:29,738 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:29,738 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:29,738 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:29,743 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:29,746 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 20:32:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:29,955 INFO L256 TraceCheckSpWp]: Trace formula consists of 802 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:32:29,960 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:30,313 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 2956 proven. 72 refuted. 0 times theorem prover too weak. 2762 trivial. 0 not checked. [2024-11-27 20:32:30,314 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:30,693 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 148 proven. 72 refuted. 0 times theorem prover too weak. 5570 trivial. 0 not checked. [2024-11-27 20:32:30,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285519303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:32:30,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:32:30,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2024-11-27 20:32:30,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434770328] [2024-11-27 20:32:30,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:32:30,694 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:32:30,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:30,695 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:32:30,695 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:32:30,695 INFO L87 Difference]: Start difference. First operand 2106 states and 2951 transitions. Second operand has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 14 states have internal predecessors, (169), 4 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2024-11-27 20:32:32,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:32,892 INFO L93 Difference]: Finished difference Result 4682 states and 6575 transitions. [2024-11-27 20:32:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-11-27 20:32:32,892 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 14 states have internal predecessors, (169), 4 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) Word has length 358 [2024-11-27 20:32:32,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:32,902 INFO L225 Difference]: With dead ends: 4682 [2024-11-27 20:32:32,902 INFO L226 Difference]: Without dead ends: 2873 [2024-11-27 20:32:32,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 766 GetRequests, 719 SyntacticMatches, 1 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 578 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=493, Invalid=1763, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 20:32:32,908 INFO L435 NwaCegarLoop]: 153 mSDtfsCounter, 1509 mSDsluCounter, 794 mSDsCounter, 0 mSdLazyCounter, 1201 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 1553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 1201 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:32,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 947 Invalid, 1553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 1201 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-27 20:32:32,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2873 states. [2024-11-27 20:32:33,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2873 to 1954. [2024-11-27 20:32:33,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1954 states, 1605 states have (on average 1.3065420560747663) internal successors, (2097), 1610 states have internal predecessors, (2097), 298 states have call successors, (298), 50 states have call predecessors, (298), 50 states have return successors, (298), 293 states have call predecessors, (298), 298 states have call successors, (298) [2024-11-27 20:32:33,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1954 states to 1954 states and 2693 transitions. [2024-11-27 20:32:33,290 INFO L78 Accepts]: Start accepts. Automaton has 1954 states and 2693 transitions. Word has length 358 [2024-11-27 20:32:33,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:33,291 INFO L471 AbstractCegarLoop]: Abstraction has 1954 states and 2693 transitions. [2024-11-27 20:32:33,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 12.071428571428571) internal successors, (169), 14 states have internal predecessors, (169), 4 states have call successors, (129), 2 states have call predecessors, (129), 4 states have return successors, (131), 4 states have call predecessors, (131), 4 states have call successors, (131) [2024-11-27 20:32:33,291 INFO L276 IsEmpty]: Start isEmpty. Operand 1954 states and 2693 transitions. [2024-11-27 20:32:33,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-27 20:32:33,296 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:33,296 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:33,310 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 20:32:33,496 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:33,497 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:33,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:33,497 INFO L85 PathProgramCache]: Analyzing trace with hash -725629478, now seen corresponding path program 1 times [2024-11-27 20:32:33,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:33,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984104296] [2024-11-27 20:32:33,497 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:33,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:36,260 INFO L134 CoverageAnalysis]: Checked inductivity of 5791 backedges. 5 proven. 62 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-11-27 20:32:36,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:36,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984104296] [2024-11-27 20:32:36,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984104296] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:36,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1395217017] [2024-11-27 20:32:36,260 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:36,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:36,260 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:36,262 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:36,263 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 20:32:36,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:36,621 INFO L256 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-27 20:32:36,628 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:39,649 INFO L134 CoverageAnalysis]: Checked inductivity of 5791 backedges. 229 proven. 3048 refuted. 0 times theorem prover too weak. 2514 trivial. 0 not checked. [2024-11-27 20:32:39,650 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:40,859 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1395217017] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:40,859 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:32:40,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 26 [2024-11-27 20:32:40,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450836838] [2024-11-27 20:32:40,860 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:32:40,861 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-27 20:32:40,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:40,861 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-27 20:32:40,862 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2024-11-27 20:32:40,862 INFO L87 Difference]: Start difference. First operand 1954 states and 2693 transitions. Second operand has 26 states, 26 states have (on average 7.0) internal successors, (182), 26 states have internal predecessors, (182), 5 states have call successors, (108), 4 states have call predecessors, (108), 5 states have return successors, (108), 5 states have call predecessors, (108), 5 states have call successors, (108) [2024-11-27 20:32:44,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:44,179 INFO L93 Difference]: Finished difference Result 4214 states and 5828 transitions. [2024-11-27 20:32:44,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-27 20:32:44,180 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 7.0) internal successors, (182), 26 states have internal predecessors, (182), 5 states have call successors, (108), 4 states have call predecessors, (108), 5 states have return successors, (108), 5 states have call predecessors, (108), 5 states have call successors, (108) Word has length 358 [2024-11-27 20:32:44,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:44,190 INFO L225 Difference]: With dead ends: 4214 [2024-11-27 20:32:44,190 INFO L226 Difference]: Without dead ends: 2591 [2024-11-27 20:32:44,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=451, Invalid=2519, Unknown=0, NotChecked=0, Total=2970 [2024-11-27 20:32:44,195 INFO L435 NwaCegarLoop]: 200 mSDtfsCounter, 873 mSDsluCounter, 1696 mSDsCounter, 0 mSdLazyCounter, 2867 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 1896 SdHoareTripleChecker+Invalid, 3120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 2867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:44,196 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 1896 Invalid, 3120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 2867 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 20:32:44,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2591 states. [2024-11-27 20:32:44,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2591 to 2336. [2024-11-27 20:32:44,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2336 states, 1911 states have (on average 1.2967032967032968) internal successors, (2478), 1917 states have internal predecessors, (2478), 363 states have call successors, (363), 61 states have call predecessors, (363), 61 states have return successors, (363), 357 states have call predecessors, (363), 363 states have call successors, (363) [2024-11-27 20:32:44,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2336 states to 2336 states and 3204 transitions. [2024-11-27 20:32:44,552 INFO L78 Accepts]: Start accepts. Automaton has 2336 states and 3204 transitions. Word has length 358 [2024-11-27 20:32:44,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:44,552 INFO L471 AbstractCegarLoop]: Abstraction has 2336 states and 3204 transitions. [2024-11-27 20:32:44,553 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 7.0) internal successors, (182), 26 states have internal predecessors, (182), 5 states have call successors, (108), 4 states have call predecessors, (108), 5 states have return successors, (108), 5 states have call predecessors, (108), 5 states have call successors, (108) [2024-11-27 20:32:44,553 INFO L276 IsEmpty]: Start isEmpty. Operand 2336 states and 3204 transitions. [2024-11-27 20:32:44,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-27 20:32:44,558 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:44,558 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:44,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 20:32:44,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:44,758 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:44,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:44,759 INFO L85 PathProgramCache]: Analyzing trace with hash 285487772, now seen corresponding path program 1 times [2024-11-27 20:32:44,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:44,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391143057] [2024-11-27 20:32:44,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:44,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:47,310 INFO L134 CoverageAnalysis]: Checked inductivity of 5791 backedges. 6 proven. 61 refuted. 0 times theorem prover too weak. 5724 trivial. 0 not checked. [2024-11-27 20:32:47,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:32:47,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391143057] [2024-11-27 20:32:47,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391143057] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:47,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964365850] [2024-11-27 20:32:47,311 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:47,311 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:32:47,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:32:47,313 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:32:47,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 20:32:47,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:32:47,548 INFO L256 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-27 20:32:47,554 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:32:49,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5791 backedges. 6 proven. 2977 refuted. 0 times theorem prover too weak. 2808 trivial. 0 not checked. [2024-11-27 20:32:49,074 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:32:51,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964365850] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:32:51,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:32:51,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 10] total 20 [2024-11-27 20:32:51,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214268590] [2024-11-27 20:32:51,587 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 20:32:51,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-27 20:32:51,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:32:51,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-27 20:32:51,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=559, Unknown=0, NotChecked=0, Total=650 [2024-11-27 20:32:51,588 INFO L87 Difference]: Start difference. First operand 2336 states and 3204 transitions. Second operand has 20 states, 20 states have (on average 7.25) internal successors, (145), 20 states have internal predecessors, (145), 4 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) [2024-11-27 20:32:54,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:32:54,694 INFO L93 Difference]: Finished difference Result 5482 states and 7501 transitions. [2024-11-27 20:32:54,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-27 20:32:54,695 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.25) internal successors, (145), 20 states have internal predecessors, (145), 4 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) Word has length 358 [2024-11-27 20:32:54,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:32:54,704 INFO L225 Difference]: With dead ends: 5482 [2024-11-27 20:32:54,704 INFO L226 Difference]: Without dead ends: 3859 [2024-11-27 20:32:54,708 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 409 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=245, Invalid=877, Unknown=0, NotChecked=0, Total=1122 [2024-11-27 20:32:54,709 INFO L435 NwaCegarLoop]: 285 mSDtfsCounter, 835 mSDsluCounter, 1889 mSDsCounter, 0 mSdLazyCounter, 2094 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 2174 SdHoareTripleChecker+Invalid, 2226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 2094 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-27 20:32:54,709 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 2174 Invalid, 2226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 2094 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-27 20:32:54,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3859 states. [2024-11-27 20:32:55,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3859 to 2969. [2024-11-27 20:32:55,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2969 states, 2392 states have (on average 1.2876254180602007) internal successors, (3080), 2400 states have internal predecessors, (3080), 493 states have call successors, (493), 83 states have call predecessors, (493), 83 states have return successors, (493), 485 states have call predecessors, (493), 493 states have call successors, (493) [2024-11-27 20:32:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2969 states to 2969 states and 4066 transitions. [2024-11-27 20:32:55,226 INFO L78 Accepts]: Start accepts. Automaton has 2969 states and 4066 transitions. Word has length 358 [2024-11-27 20:32:55,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:32:55,226 INFO L471 AbstractCegarLoop]: Abstraction has 2969 states and 4066 transitions. [2024-11-27 20:32:55,227 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.25) internal successors, (145), 20 states have internal predecessors, (145), 4 states have call successors, (108), 3 states have call predecessors, (108), 3 states have return successors, (108), 4 states have call predecessors, (108), 4 states have call successors, (108) [2024-11-27 20:32:55,227 INFO L276 IsEmpty]: Start isEmpty. Operand 2969 states and 4066 transitions. [2024-11-27 20:32:55,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 360 [2024-11-27 20:32:55,232 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:32:55,232 INFO L218 NwaCegarLoop]: trace histogram [54, 54, 54, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:32:55,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 20:32:55,432 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2bb54582-5636-4cf7-be2f-360fa45343f5/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2024-11-27 20:32:55,433 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:32:55,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:32:55,433 INFO L85 PathProgramCache]: Analyzing trace with hash 385547198, now seen corresponding path program 1 times [2024-11-27 20:32:55,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:32:55,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367302826] [2024-11-27 20:32:55,433 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:32:55,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:32:55,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat