./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c --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_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/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_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/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_e53e6c90-0b71-446e-8da5-73b15c975d96/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 0a05a45e59c4449e0f919ee265abbb6a4949f64a9be713d749d79d0baffd63df --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 23:26:57,073 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 23:26:57,183 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 23:26:57,191 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 23:26:57,191 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 23:26:57,224 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 23:26:57,225 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 23:26:57,225 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 23:26:57,226 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 23:26:57,226 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 23:26:57,226 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 23:26:57,226 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 23:26:57,227 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 23:26:57,227 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 23:26:57,227 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 23:26:57,228 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 23:26:57,228 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 23:26:57,228 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 23:26:57,228 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 23:26:57,228 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 23:26:57,229 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 23:26:57,229 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 23:26:57,229 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 23:26:57,229 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 23:26:57,229 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 23:26:57,229 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 23:26:57,232 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 23:26:57,233 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 23:26:57,233 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 23:26:57,233 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:26:57,233 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:26:57,233 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:26:57,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:26:57,234 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 23:26:57,234 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 23:26:57,234 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 23:26:57,234 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 23:26:57,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:26:57,234 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 23:26:57,235 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 23:26:57,235 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 23:26:57,235 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 23:26:57,235 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 23:26:57,235 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 23:26:57,235 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 23:26:57,235 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 23:26:57,235 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 23:26:57,236 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 23:26:57,236 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_e53e6c90-0b71-446e-8da5-73b15c975d96/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 -> 0a05a45e59c4449e0f919ee265abbb6a4949f64a9be713d749d79d0baffd63df [2024-11-27 23:26:57,663 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 23:26:57,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 23:26:57,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 23:26:57,679 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 23:26:57,680 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 23:26:57,681 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2024-11-27 23:27:01,537 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/data/22d2b48df/253cf532822749939909b3551a4f4328/FLAG81e75f08a [2024-11-27 23:27:01,909 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 23:27:01,909 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2024-11-27 23:27:01,923 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/data/22d2b48df/253cf532822749939909b3551a4f4328/FLAG81e75f08a [2024-11-27 23:27:02,129 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/data/22d2b48df/253cf532822749939909b3551a4f4328 [2024-11-27 23:27:02,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 23:27:02,133 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 23:27:02,135 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 23:27:02,135 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 23:27:02,141 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 23:27:02,142 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:27:02" (1/1) ... [2024-11-27 23:27:02,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bf9a770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02, skipping insertion in model container [2024-11-27 23:27:02,143 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 11:27:02" (1/1) ... [2024-11-27 23:27:02,180 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 23:27:02,552 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_e53e6c90-0b71-446e-8da5-73b15c975d96/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2024-11-27 23:27:02,562 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:27:02,577 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 23:27:02,672 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_e53e6c90-0b71-446e-8da5-73b15c975d96/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c[14577,14590] [2024-11-27 23:27:02,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 23:27:02,711 INFO L204 MainTranslator]: Completed translation [2024-11-27 23:27:02,712 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02 WrapperNode [2024-11-27 23:27:02,712 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 23:27:02,713 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 23:27:02,713 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 23:27:02,713 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 23:27:02,726 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02" (1/1) ... [2024-11-27 23:27:02,753 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02" (1/1) ... [2024-11-27 23:27:02,799 INFO L138 Inliner]: procedures = 32, calls = 47, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 507 [2024-11-27 23:27:02,799 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 23:27:02,800 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 23:27:02,800 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 23:27:02,800 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 23:27:02,812 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02" (1/1) ... [2024-11-27 23:27:02,812 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02" (1/1) ... [2024-11-27 23:27:02,817 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02" (1/1) ... [2024-11-27 23:27:02,837 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 23:27:02,837 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02" (1/1) ... [2024-11-27 23:27:02,837 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02" (1/1) ... [2024-11-27 23:27:02,855 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02" (1/1) ... [2024-11-27 23:27:02,857 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02" (1/1) ... [2024-11-27 23:27:02,864 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02" (1/1) ... [2024-11-27 23:27:02,867 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02" (1/1) ... [2024-11-27 23:27:02,871 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02" (1/1) ... [2024-11-27 23:27:02,877 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 23:27:02,882 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 23:27:02,882 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 23:27:02,882 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 23:27:02,883 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02" (1/1) ... [2024-11-27 23:27:02,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 23:27:02,912 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:02,931 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 23:27:02,939 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 23:27:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-11-27 23:27:02,976 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-11-27 23:27:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 23:27:02,976 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-11-27 23:27:02,976 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-11-27 23:27:02,977 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-27 23:27:02,977 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-27 23:27:02,977 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-27 23:27:02,977 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-27 23:27:02,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 23:27:02,977 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-11-27 23:27:02,977 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-11-27 23:27:02,977 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 23:27:02,977 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 23:27:02,978 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-11-27 23:27:02,978 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-11-27 23:27:03,177 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 23:27:03,180 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 23:27:04,258 INFO L? ?]: Removed 117 outVars from TransFormulas that were not future-live. [2024-11-27 23:27:04,259 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 23:27:04,286 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 23:27:04,287 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 23:27:04,287 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:27:04 BoogieIcfgContainer [2024-11-27 23:27:04,287 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 23:27:04,294 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 23:27:04,294 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 23:27:04,303 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 23:27:04,303 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 11:27:02" (1/3) ... [2024-11-27 23:27:04,304 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a729b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:27:04, skipping insertion in model container [2024-11-27 23:27:04,304 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 11:27:02" (2/3) ... [2024-11-27 23:27:04,305 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a729b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 11:27:04, skipping insertion in model container [2024-11-27 23:27:04,305 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 11:27:04" (3/3) ... [2024-11-27 23:27:04,307 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c [2024-11-27 23:27:04,329 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 23:27:04,335 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_STARTPALS_ActiveStandby.5.ufo.UNBOUNDED.pals.c that has 7 procedures, 173 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 23:27:04,489 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 23:27:04,506 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;@7dd860a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 23:27:04,506 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 23:27:04,512 INFO L276 IsEmpty]: Start isEmpty. Operand has 173 states, 136 states have (on average 1.5661764705882353) internal successors, (213), 138 states have internal predecessors, (213), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-27 23:27:04,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-27 23:27:04,523 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:04,524 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:04,525 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:04,532 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:04,532 INFO L85 PathProgramCache]: Analyzing trace with hash -1815111432, now seen corresponding path program 1 times [2024-11-27 23:27:04,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:04,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866760367] [2024-11-27 23:27:04,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:04,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:04,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:04,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:04,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:04,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866760367] [2024-11-27 23:27:04,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866760367] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:04,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:04,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 23:27:04,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977630939] [2024-11-27 23:27:04,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:04,983 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 23:27:04,985 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:05,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 23:27:05,017 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 23:27:05,023 INFO L87 Difference]: Start difference. First operand has 173 states, 136 states have (on average 1.5661764705882353) internal successors, (213), 138 states have internal predecessors, (213), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) Second operand has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:27:05,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:05,099 INFO L93 Difference]: Finished difference Result 326 states and 539 transitions. [2024-11-27 23:27:05,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 23:27:05,103 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-27 23:27:05,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:05,114 INFO L225 Difference]: With dead ends: 326 [2024-11-27 23:27:05,115 INFO L226 Difference]: Without dead ends: 169 [2024-11-27 23:27:05,124 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 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 23:27:05,131 INFO L435 NwaCegarLoop]: 264 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, 264 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 23:27:05,136 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:05,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-27 23:27:05,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-11-27 23:27:05,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.5488721804511278) internal successors, (206), 134 states have internal predecessors, (206), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-27 23:27:05,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 264 transitions. [2024-11-27 23:27:05,224 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 264 transitions. Word has length 28 [2024-11-27 23:27:05,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:05,225 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 264 transitions. [2024-11-27 23:27:05,225 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:27:05,226 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 264 transitions. [2024-11-27 23:27:05,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-27 23:27:05,227 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:05,227 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:05,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 23:27:05,228 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:05,229 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:05,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1596256714, now seen corresponding path program 1 times [2024-11-27 23:27:05,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:05,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2068061898] [2024-11-27 23:27:05,230 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:05,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:05,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:05,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:05,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2068061898] [2024-11-27 23:27:05,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2068061898] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:05,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:05,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:27:05,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635280165] [2024-11-27 23:27:05,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:05,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:05,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:05,728 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:05,728 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:05,728 INFO L87 Difference]: Start difference. First operand 169 states and 264 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:27:05,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:05,873 INFO L93 Difference]: Finished difference Result 324 states and 502 transitions. [2024-11-27 23:27:05,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 23:27:05,875 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-27 23:27:05,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:05,878 INFO L225 Difference]: With dead ends: 324 [2024-11-27 23:27:05,878 INFO L226 Difference]: Without dead ends: 169 [2024-11-27 23:27:05,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:05,881 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:05,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1278 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:05,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2024-11-27 23:27:05,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 169. [2024-11-27 23:27:05,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 133 states have (on average 1.4586466165413534) internal successors, (194), 134 states have internal predecessors, (194), 29 states have call successors, (29), 6 states have call predecessors, (29), 6 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-27 23:27:05,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 252 transitions. [2024-11-27 23:27:05,926 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 252 transitions. Word has length 28 [2024-11-27 23:27:05,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:05,926 INFO L471 AbstractCegarLoop]: Abstraction has 169 states and 252 transitions. [2024-11-27 23:27:05,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 6 states have internal predecessors, (24), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:27:05,927 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 252 transitions. [2024-11-27 23:27:05,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-27 23:27:05,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:05,931 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:05,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 23:27:05,931 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:05,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:05,932 INFO L85 PathProgramCache]: Analyzing trace with hash 187133938, now seen corresponding path program 1 times [2024-11-27 23:27:05,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:05,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442283002] [2024-11-27 23:27:05,933 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:05,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:06,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:06,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 23:27:06,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:06,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442283002] [2024-11-27 23:27:06,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442283002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:06,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:06,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:06,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616734632] [2024-11-27 23:27:06,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:06,446 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:06,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:06,446 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:06,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:06,448 INFO L87 Difference]: Start difference. First operand 169 states and 252 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:27:06,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:06,578 INFO L93 Difference]: Finished difference Result 325 states and 494 transitions. [2024-11-27 23:27:06,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:06,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 39 [2024-11-27 23:27:06,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:06,581 INFO L225 Difference]: With dead ends: 325 [2024-11-27 23:27:06,581 INFO L226 Difference]: Without dead ends: 173 [2024-11-27 23:27:06,582 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:06,583 INFO L435 NwaCegarLoop]: 246 mSDtfsCounter, 3 mSDsluCounter, 482 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 728 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:06,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 728 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:06,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2024-11-27 23:27:06,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2024-11-27 23:27:06,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 136 states have (on average 1.4485294117647058) internal successors, (197), 137 states have internal predecessors, (197), 29 states have call successors, (29), 7 states have call predecessors, (29), 7 states have return successors, (29), 29 states have call predecessors, (29), 29 states have call successors, (29) [2024-11-27 23:27:06,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 255 transitions. [2024-11-27 23:27:06,605 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 255 transitions. Word has length 39 [2024-11-27 23:27:06,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:06,606 INFO L471 AbstractCegarLoop]: Abstraction has 173 states and 255 transitions. [2024-11-27 23:27:06,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 23:27:06,606 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 255 transitions. [2024-11-27 23:27:06,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-27 23:27:06,608 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:06,608 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:06,608 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 23:27:06,608 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:06,609 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:06,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1556220768, now seen corresponding path program 1 times [2024-11-27 23:27:06,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:06,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189132605] [2024-11-27 23:27:06,609 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:06,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:06,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:06,829 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:27:06,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:06,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189132605] [2024-11-27 23:27:06,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189132605] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:06,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:06,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:06,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430790629] [2024-11-27 23:27:06,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:06,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:06,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:06,833 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:06,834 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:06,834 INFO L87 Difference]: Start difference. First operand 173 states and 255 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:27:06,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:06,941 INFO L93 Difference]: Finished difference Result 476 states and 713 transitions. [2024-11-27 23:27:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:06,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 55 [2024-11-27 23:27:06,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:06,945 INFO L225 Difference]: With dead ends: 476 [2024-11-27 23:27:06,946 INFO L226 Difference]: Without dead ends: 320 [2024-11-27 23:27:06,947 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 23:27:06,948 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 208 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 500 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:06,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 500 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:06,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 320 states. [2024-11-27 23:27:07,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 320 to 315. [2024-11-27 23:27:07,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 243 states have (on average 1.4691358024691359) internal successors, (357), 245 states have internal predecessors, (357), 57 states have call successors, (57), 14 states have call predecessors, (57), 14 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-27 23:27:07,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 471 transitions. [2024-11-27 23:27:07,013 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 471 transitions. Word has length 55 [2024-11-27 23:27:07,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:07,014 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 471 transitions. [2024-11-27 23:27:07,015 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:27:07,015 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 471 transitions. [2024-11-27 23:27:07,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-27 23:27:07,020 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:07,020 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:07,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 23:27:07,021 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:07,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:07,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1976715472, now seen corresponding path program 1 times [2024-11-27 23:27:07,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:07,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92345926] [2024-11-27 23:27:07,022 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:07,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:07,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:07,218 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:27:07,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:07,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92345926] [2024-11-27 23:27:07,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92345926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:07,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:07,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:07,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084312501] [2024-11-27 23:27:07,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:07,220 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:07,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:07,220 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:07,221 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:07,221 INFO L87 Difference]: Start difference. First operand 315 states and 471 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:27:07,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:07,361 INFO L93 Difference]: Finished difference Result 887 states and 1337 transitions. [2024-11-27 23:27:07,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:07,363 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-11-27 23:27:07,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:07,372 INFO L225 Difference]: With dead ends: 887 [2024-11-27 23:27:07,373 INFO L226 Difference]: Without dead ends: 589 [2024-11-27 23:27:07,377 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 23:27:07,378 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 204 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:07,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 517 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:07,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 589 states. [2024-11-27 23:27:07,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 589 to 574. [2024-11-27 23:27:07,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 432 states have (on average 1.474537037037037) internal successors, (637), 436 states have internal predecessors, (637), 113 states have call successors, (113), 28 states have call predecessors, (113), 28 states have return successors, (113), 110 states have call predecessors, (113), 113 states have call successors, (113) [2024-11-27 23:27:07,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 863 transitions. [2024-11-27 23:27:07,498 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 863 transitions. Word has length 56 [2024-11-27 23:27:07,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:07,499 INFO L471 AbstractCegarLoop]: Abstraction has 574 states and 863 transitions. [2024-11-27 23:27:07,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:27:07,499 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 863 transitions. [2024-11-27 23:27:07,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-27 23:27:07,505 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:07,505 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:07,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 23:27:07,506 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:07,507 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:07,507 INFO L85 PathProgramCache]: Analyzing trace with hash 1038388146, now seen corresponding path program 1 times [2024-11-27 23:27:07,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:07,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243897826] [2024-11-27 23:27:07,507 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:07,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:07,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:07,906 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:27:07,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:07,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243897826] [2024-11-27 23:27:07,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243897826] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:07,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:07,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:27:07,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405183912] [2024-11-27 23:27:07,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:07,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:27:07,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:07,911 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:27:07,911 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:07,911 INFO L87 Difference]: Start difference. First operand 574 states and 863 transitions. Second operand has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:27:08,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:08,287 INFO L93 Difference]: Finished difference Result 1224 states and 1839 transitions. [2024-11-27 23:27:08,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:08,288 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-11-27 23:27:08,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:08,300 INFO L225 Difference]: With dead ends: 1224 [2024-11-27 23:27:08,300 INFO L226 Difference]: Without dead ends: 667 [2024-11-27 23:27:08,306 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 23:27:08,307 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 349 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:08,307 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 642 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:27:08,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 667 states. [2024-11-27 23:27:08,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 667 to 651. [2024-11-27 23:27:08,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 501 states have (on average 1.4610778443113772) internal successors, (732), 504 states have internal predecessors, (732), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-27 23:27:08,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 966 transitions. [2024-11-27 23:27:08,433 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 966 transitions. Word has length 56 [2024-11-27 23:27:08,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:08,434 INFO L471 AbstractCegarLoop]: Abstraction has 651 states and 966 transitions. [2024-11-27 23:27:08,434 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.0) internal successors, (45), 5 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:27:08,434 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 966 transitions. [2024-11-27 23:27:08,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-27 23:27:08,436 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:08,437 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:08,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 23:27:08,437 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:08,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:08,438 INFO L85 PathProgramCache]: Analyzing trace with hash 1231779263, now seen corresponding path program 1 times [2024-11-27 23:27:08,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:08,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649283093] [2024-11-27 23:27:08,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:08,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:08,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:08,722 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:27:08,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:08,722 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649283093] [2024-11-27 23:27:08,722 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649283093] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:08,722 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:08,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 23:27:08,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159598944] [2024-11-27 23:27:08,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:08,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:27:08,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:08,725 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:27:08,725 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:08,725 INFO L87 Difference]: Start difference. First operand 651 states and 966 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:27:09,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:09,026 INFO L93 Difference]: Finished difference Result 1228 states and 1839 transitions. [2024-11-27 23:27:09,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:09,027 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), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-11-27 23:27:09,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:09,034 INFO L225 Difference]: With dead ends: 1228 [2024-11-27 23:27:09,034 INFO L226 Difference]: Without dead ends: 671 [2024-11-27 23:27:09,036 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 23:27:09,037 INFO L435 NwaCegarLoop]: 218 mSDtfsCounter, 349 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 349 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:09,039 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [349 Valid, 642 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:27:09,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2024-11-27 23:27:09,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 659. [2024-11-27 23:27:09,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 509 states have (on average 1.4538310412573674) internal successors, (740), 512 states have internal predecessors, (740), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-27 23:27:09,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 974 transitions. [2024-11-27 23:27:09,160 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 974 transitions. Word has length 57 [2024-11-27 23:27:09,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:09,160 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 974 transitions. [2024-11-27 23:27:09,161 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), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:27:09,161 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 974 transitions. [2024-11-27 23:27:09,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-27 23:27:09,162 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:09,162 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:09,163 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-27 23:27:09,163 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:09,163 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:09,163 INFO L85 PathProgramCache]: Analyzing trace with hash 496428017, now seen corresponding path program 1 times [2024-11-27 23:27:09,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:09,164 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159299952] [2024-11-27 23:27:09,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:09,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:09,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:09,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:27:09,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:09,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159299952] [2024-11-27 23:27:09,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159299952] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:09,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:09,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:09,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825249438] [2024-11-27 23:27:09,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:09,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:09,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:09,424 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:09,424 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:09,425 INFO L87 Difference]: Start difference. First operand 659 states and 974 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:27:09,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:09,678 INFO L93 Difference]: Finished difference Result 1216 states and 1819 transitions. [2024-11-27 23:27:09,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:09,679 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 59 [2024-11-27 23:27:09,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:09,685 INFO L225 Difference]: With dead ends: 1216 [2024-11-27 23:27:09,686 INFO L226 Difference]: Without dead ends: 659 [2024-11-27 23:27:09,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 23:27:09,689 INFO L435 NwaCegarLoop]: 219 mSDtfsCounter, 52 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 640 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:09,689 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 640 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:27:09,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2024-11-27 23:27:09,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 659. [2024-11-27 23:27:09,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 509 states have (on average 1.4459724950884087) internal successors, (736), 512 states have internal predecessors, (736), 117 states have call successors, (117), 32 states have call predecessors, (117), 32 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-27 23:27:09,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 970 transitions. [2024-11-27 23:27:09,779 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 970 transitions. Word has length 59 [2024-11-27 23:27:09,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:09,779 INFO L471 AbstractCegarLoop]: Abstraction has 659 states and 970 transitions. [2024-11-27 23:27:09,779 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-27 23:27:09,780 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 970 transitions. [2024-11-27 23:27:09,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-27 23:27:09,781 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:09,781 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:09,781 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 23:27:09,781 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:09,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:09,782 INFO L85 PathProgramCache]: Analyzing trace with hash -906823040, now seen corresponding path program 1 times [2024-11-27 23:27:09,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:09,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396032794] [2024-11-27 23:27:09,782 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:09,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:09,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:10,134 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:27:10,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:10,134 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396032794] [2024-11-27 23:27:10,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396032794] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:10,134 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:10,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:10,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776330561] [2024-11-27 23:27:10,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:10,135 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:10,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:10,138 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:10,138 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:10,139 INFO L87 Difference]: Start difference. First operand 659 states and 970 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:27:10,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:10,251 INFO L93 Difference]: Finished difference Result 1236 states and 1843 transitions. [2024-11-27 23:27:10,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:10,252 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 60 [2024-11-27 23:27:10,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:10,260 INFO L225 Difference]: With dead ends: 1236 [2024-11-27 23:27:10,260 INFO L226 Difference]: Without dead ends: 679 [2024-11-27 23:27:10,263 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 23:27:10,263 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 4 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:10,264 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 740 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:10,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2024-11-27 23:27:10,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2024-11-27 23:27:10,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 525 states have (on average 1.4323809523809523) internal successors, (752), 528 states have internal predecessors, (752), 117 states have call successors, (117), 36 states have call predecessors, (117), 36 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-27 23:27:10,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 986 transitions. [2024-11-27 23:27:10,351 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 986 transitions. Word has length 60 [2024-11-27 23:27:10,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:10,353 INFO L471 AbstractCegarLoop]: Abstraction has 679 states and 986 transitions. [2024-11-27 23:27:10,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 3 states have internal predecessors, (49), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-27 23:27:10,353 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 986 transitions. [2024-11-27 23:27:10,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-27 23:27:10,355 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:10,355 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:10,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 23:27:10,355 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:10,357 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:10,357 INFO L85 PathProgramCache]: Analyzing trace with hash -1438142618, now seen corresponding path program 1 times [2024-11-27 23:27:10,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:10,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099768950] [2024-11-27 23:27:10,357 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:10,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:10,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:10,666 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:27:10,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:10,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099768950] [2024-11-27 23:27:10,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099768950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:10,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:10,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:10,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766581750] [2024-11-27 23:27:10,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:10,668 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:10,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:10,668 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:10,669 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:10,669 INFO L87 Difference]: Start difference. First operand 679 states and 986 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-27 23:27:10,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:10,817 INFO L93 Difference]: Finished difference Result 1276 states and 1887 transitions. [2024-11-27 23:27:10,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:10,818 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 68 [2024-11-27 23:27:10,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:10,825 INFO L225 Difference]: With dead ends: 1276 [2024-11-27 23:27:10,825 INFO L226 Difference]: Without dead ends: 699 [2024-11-27 23:27:10,829 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 23:27:10,830 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 4 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:10,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 726 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:10,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2024-11-27 23:27:10,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2024-11-27 23:27:10,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 541 states have (on average 1.4195933456561922) internal successors, (768), 544 states have internal predecessors, (768), 117 states have call successors, (117), 40 states have call predecessors, (117), 40 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-27 23:27:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1002 transitions. [2024-11-27 23:27:10,927 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1002 transitions. Word has length 68 [2024-11-27 23:27:10,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:10,927 INFO L471 AbstractCegarLoop]: Abstraction has 699 states and 1002 transitions. [2024-11-27 23:27:10,927 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-27 23:27:10,927 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1002 transitions. [2024-11-27 23:27:10,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 23:27:10,929 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:10,929 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:10,929 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 23:27:10,929 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:10,930 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:10,930 INFO L85 PathProgramCache]: Analyzing trace with hash 288384240, now seen corresponding path program 1 times [2024-11-27 23:27:10,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:10,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625485278] [2024-11-27 23:27:10,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:10,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:10,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:11,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:27:11,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:11,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625485278] [2024-11-27 23:27:11,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625485278] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:11,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:11,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:11,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436786630] [2024-11-27 23:27:11,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:11,216 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:11,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:11,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:11,217 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:11,217 INFO L87 Difference]: Start difference. First operand 699 states and 1002 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-27 23:27:11,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:11,372 INFO L93 Difference]: Finished difference Result 1312 states and 1903 transitions. [2024-11-27 23:27:11,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:11,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-27 23:27:11,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:11,380 INFO L225 Difference]: With dead ends: 1312 [2024-11-27 23:27:11,381 INFO L226 Difference]: Without dead ends: 715 [2024-11-27 23:27:11,384 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:11,384 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 3 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:11,385 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 736 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:11,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-11-27 23:27:11,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 715. [2024-11-27 23:27:11,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 715 states, 553 states have (on average 1.410488245931284) internal successors, (780), 556 states have internal predecessors, (780), 117 states have call successors, (117), 44 states have call predecessors, (117), 44 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-27 23:27:11,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 715 states to 715 states and 1014 transitions. [2024-11-27 23:27:11,485 INFO L78 Accepts]: Start accepts. Automaton has 715 states and 1014 transitions. Word has length 76 [2024-11-27 23:27:11,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:11,485 INFO L471 AbstractCegarLoop]: Abstraction has 715 states and 1014 transitions. [2024-11-27 23:27:11,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-27 23:27:11,485 INFO L276 IsEmpty]: Start isEmpty. Operand 715 states and 1014 transitions. [2024-11-27 23:27:11,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-27 23:27:11,487 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:11,488 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:11,488 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-27 23:27:11,488 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:11,488 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:11,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1610123753, now seen corresponding path program 1 times [2024-11-27 23:27:11,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:11,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477187348] [2024-11-27 23:27:11,489 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:11,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:11,772 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:27:11,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:11,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477187348] [2024-11-27 23:27:11,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477187348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:11,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:11,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:11,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149852228] [2024-11-27 23:27:11,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:11,774 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:11,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:11,774 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:11,774 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:11,775 INFO L87 Difference]: Start difference. First operand 715 states and 1014 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-27 23:27:11,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:11,927 INFO L93 Difference]: Finished difference Result 1348 states and 1943 transitions. [2024-11-27 23:27:11,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:11,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 76 [2024-11-27 23:27:11,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:11,934 INFO L225 Difference]: With dead ends: 1348 [2024-11-27 23:27:11,934 INFO L226 Difference]: Without dead ends: 735 [2024-11-27 23:27:11,937 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 23:27:11,938 INFO L435 NwaCegarLoop]: 245 mSDtfsCounter, 4 mSDsluCounter, 481 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:11,938 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 726 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:11,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2024-11-27 23:27:12,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 735. [2024-11-27 23:27:12,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 735 states, 569 states have (on average 1.398945518453427) internal successors, (796), 572 states have internal predecessors, (796), 117 states have call successors, (117), 48 states have call predecessors, (117), 48 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-27 23:27:12,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 735 states to 735 states and 1030 transitions. [2024-11-27 23:27:12,021 INFO L78 Accepts]: Start accepts. Automaton has 735 states and 1030 transitions. Word has length 76 [2024-11-27 23:27:12,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:12,022 INFO L471 AbstractCegarLoop]: Abstraction has 735 states and 1030 transitions. [2024-11-27 23:27:12,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-27 23:27:12,022 INFO L276 IsEmpty]: Start isEmpty. Operand 735 states and 1030 transitions. [2024-11-27 23:27:12,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-11-27 23:27:12,027 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:12,030 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:12,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-27 23:27:12,030 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:12,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:12,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1718962299, now seen corresponding path program 1 times [2024-11-27 23:27:12,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:12,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154148337] [2024-11-27 23:27:12,031 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:12,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:12,411 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:27:12,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:12,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154148337] [2024-11-27 23:27:12,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154148337] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:12,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:12,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:12,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274542983] [2024-11-27 23:27:12,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:12,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:12,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:12,413 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:12,413 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:12,413 INFO L87 Difference]: Start difference. First operand 735 states and 1030 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-27 23:27:12,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:12,573 INFO L93 Difference]: Finished difference Result 1392 states and 1971 transitions. [2024-11-27 23:27:12,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:12,574 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 84 [2024-11-27 23:27:12,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:12,583 INFO L225 Difference]: With dead ends: 1392 [2024-11-27 23:27:12,583 INFO L226 Difference]: Without dead ends: 759 [2024-11-27 23:27:12,585 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 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 23:27:12,586 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 5 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 738 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:12,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 738 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:12,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2024-11-27 23:27:12,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2024-11-27 23:27:12,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 589 states have (on average 1.3853989813242784) internal successors, (816), 592 states have internal predecessors, (816), 117 states have call successors, (117), 52 states have call predecessors, (117), 52 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-27 23:27:12,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1050 transitions. [2024-11-27 23:27:12,673 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1050 transitions. Word has length 84 [2024-11-27 23:27:12,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:12,674 INFO L471 AbstractCegarLoop]: Abstraction has 759 states and 1050 transitions. [2024-11-27 23:27:12,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-27 23:27:12,674 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1050 transitions. [2024-11-27 23:27:12,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-11-27 23:27:12,678 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:12,678 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:12,679 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-27 23:27:12,679 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:12,680 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:12,680 INFO L85 PathProgramCache]: Analyzing trace with hash 966027762, now seen corresponding path program 1 times [2024-11-27 23:27:12,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:12,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990229801] [2024-11-27 23:27:12,680 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:12,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:12,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 23:27:13,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:13,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990229801] [2024-11-27 23:27:13,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990229801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:13,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:13,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:27:13,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665330010] [2024-11-27 23:27:13,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:13,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:27:13,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:13,686 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:27:13,686 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:27:13,686 INFO L87 Difference]: Start difference. First operand 759 states and 1050 transitions. Second operand has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 23:27:14,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:14,299 INFO L93 Difference]: Finished difference Result 1983 states and 2731 transitions. [2024-11-27 23:27:14,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:27:14,300 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 87 [2024-11-27 23:27:14,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:14,315 INFO L225 Difference]: With dead ends: 1983 [2024-11-27 23:27:14,315 INFO L226 Difference]: Without dead ends: 1326 [2024-11-27 23:27:14,319 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:14,320 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 187 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1426 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:14,321 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1426 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 23:27:14,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1326 states. [2024-11-27 23:27:14,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1326 to 912. [2024-11-27 23:27:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 912 states, 705 states have (on average 1.374468085106383) internal successors, (969), 709 states have internal predecessors, (969), 141 states have call successors, (141), 65 states have call predecessors, (141), 65 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2024-11-27 23:27:14,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 912 states to 912 states and 1251 transitions. [2024-11-27 23:27:14,489 INFO L78 Accepts]: Start accepts. Automaton has 912 states and 1251 transitions. Word has length 87 [2024-11-27 23:27:14,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:14,489 INFO L471 AbstractCegarLoop]: Abstraction has 912 states and 1251 transitions. [2024-11-27 23:27:14,489 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.428571428571429) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-27 23:27:14,490 INFO L276 IsEmpty]: Start isEmpty. Operand 912 states and 1251 transitions. [2024-11-27 23:27:14,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-27 23:27:14,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:14,492 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:14,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-27 23:27:14,492 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:14,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:14,493 INFO L85 PathProgramCache]: Analyzing trace with hash 2026376801, now seen corresponding path program 1 times [2024-11-27 23:27:14,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:14,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105811688] [2024-11-27 23:27:14,493 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:14,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:14,739 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 23:27:14,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:14,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105811688] [2024-11-27 23:27:14,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105811688] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:14,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:14,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:14,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155034110] [2024-11-27 23:27:14,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:14,742 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:14,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:14,742 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:14,743 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:14,743 INFO L87 Difference]: Start difference. First operand 912 states and 1251 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 23:27:14,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:14,901 INFO L93 Difference]: Finished difference Result 1697 states and 2351 transitions. [2024-11-27 23:27:14,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:14,902 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 91 [2024-11-27 23:27:14,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:14,909 INFO L225 Difference]: With dead ends: 1697 [2024-11-27 23:27:14,910 INFO L226 Difference]: Without dead ends: 932 [2024-11-27 23:27:14,912 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:14,913 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 3 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 736 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:14,913 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 736 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:14,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 932 states. [2024-11-27 23:27:14,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 932 to 932. [2024-11-27 23:27:14,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 932 states, 720 states have (on average 1.3666666666666667) internal successors, (984), 724 states have internal predecessors, (984), 141 states have call successors, (141), 70 states have call predecessors, (141), 70 states have return successors, (141), 137 states have call predecessors, (141), 141 states have call successors, (141) [2024-11-27 23:27:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 932 states to 932 states and 1266 transitions. [2024-11-27 23:27:15,008 INFO L78 Accepts]: Start accepts. Automaton has 932 states and 1266 transitions. Word has length 91 [2024-11-27 23:27:15,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:15,008 INFO L471 AbstractCegarLoop]: Abstraction has 932 states and 1266 transitions. [2024-11-27 23:27:15,009 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 23:27:15,009 INFO L276 IsEmpty]: Start isEmpty. Operand 932 states and 1266 transitions. [2024-11-27 23:27:15,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-11-27 23:27:15,012 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:15,013 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:15,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-27 23:27:15,013 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:15,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:15,014 INFO L85 PathProgramCache]: Analyzing trace with hash -1456343440, now seen corresponding path program 1 times [2024-11-27 23:27:15,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:15,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688584785] [2024-11-27 23:27:15,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:15,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:15,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:15,417 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:27:15,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:15,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688584785] [2024-11-27 23:27:15,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688584785] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:15,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:15,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 23:27:15,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148425] [2024-11-27 23:27:15,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:15,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 23:27:15,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:15,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 23:27:15,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-27 23:27:15,422 INFO L87 Difference]: Start difference. First operand 932 states and 1266 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 23:27:15,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:15,663 INFO L93 Difference]: Finished difference Result 1343 states and 1926 transitions. [2024-11-27 23:27:15,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 23:27:15,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 90 [2024-11-27 23:27:15,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:15,674 INFO L225 Difference]: With dead ends: 1343 [2024-11-27 23:27:15,675 INFO L226 Difference]: Without dead ends: 1341 [2024-11-27 23:27:15,675 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-27 23:27:15,677 INFO L435 NwaCegarLoop]: 434 mSDtfsCounter, 136 mSDsluCounter, 1545 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 1979 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:15,678 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 1979 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:15,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1341 states. [2024-11-27 23:27:15,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1341 to 934. [2024-11-27 23:27:15,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 720 states have (on average 1.3666666666666667) internal successors, (984), 725 states have internal predecessors, (984), 142 states have call successors, (142), 71 states have call predecessors, (142), 71 states have return successors, (142), 137 states have call predecessors, (142), 142 states have call successors, (142) [2024-11-27 23:27:15,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1268 transitions. [2024-11-27 23:27:15,805 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1268 transitions. Word has length 90 [2024-11-27 23:27:15,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:15,806 INFO L471 AbstractCegarLoop]: Abstraction has 934 states and 1268 transitions. [2024-11-27 23:27:15,806 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-27 23:27:15,806 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1268 transitions. [2024-11-27 23:27:15,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-11-27 23:27:15,808 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:15,808 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:15,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-27 23:27:15,809 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:15,809 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:15,809 INFO L85 PathProgramCache]: Analyzing trace with hash 914249721, now seen corresponding path program 1 times [2024-11-27 23:27:15,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:15,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216661581] [2024-11-27 23:27:15,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:15,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:16,113 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-27 23:27:16,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:16,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216661581] [2024-11-27 23:27:16,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216661581] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:16,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:16,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:27:16,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039915624] [2024-11-27 23:27:16,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:16,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:27:16,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:16,116 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:27:16,117 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:27:16,117 INFO L87 Difference]: Start difference. First operand 934 states and 1268 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 23:27:16,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:16,536 INFO L93 Difference]: Finished difference Result 1740 states and 2381 transitions. [2024-11-27 23:27:16,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:27:16,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 93 [2024-11-27 23:27:16,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:16,549 INFO L225 Difference]: With dead ends: 1740 [2024-11-27 23:27:16,549 INFO L226 Difference]: Without dead ends: 994 [2024-11-27 23:27:16,553 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:16,554 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 236 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:16,555 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 1435 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:27:16,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 994 states. [2024-11-27 23:27:16,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 994 to 952. [2024-11-27 23:27:16,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 952 states, 743 states have (on average 1.3620457604306864) internal successors, (1012), 752 states have internal predecessors, (1012), 136 states have call successors, (136), 72 states have call predecessors, (136), 72 states have return successors, (136), 127 states have call predecessors, (136), 136 states have call successors, (136) [2024-11-27 23:27:16,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 952 states to 952 states and 1284 transitions. [2024-11-27 23:27:16,683 INFO L78 Accepts]: Start accepts. Automaton has 952 states and 1284 transitions. Word has length 93 [2024-11-27 23:27:16,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:16,684 INFO L471 AbstractCegarLoop]: Abstraction has 952 states and 1284 transitions. [2024-11-27 23:27:16,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-27 23:27:16,684 INFO L276 IsEmpty]: Start isEmpty. Operand 952 states and 1284 transitions. [2024-11-27 23:27:16,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-27 23:27:16,687 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:16,687 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:16,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-27 23:27:16,688 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:16,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:16,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1793206136, now seen corresponding path program 1 times [2024-11-27 23:27:16,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:16,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585838348] [2024-11-27 23:27:16,690 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:16,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:17,731 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-27 23:27:17,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:17,732 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585838348] [2024-11-27 23:27:17,732 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585838348] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:17,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:17,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:27:17,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2078072288] [2024-11-27 23:27:17,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:17,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:27:17,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:17,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:27:17,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:27:17,735 INFO L87 Difference]: Start difference. First operand 952 states and 1284 transitions. Second operand has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 23:27:18,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:18,218 INFO L93 Difference]: Finished difference Result 1725 states and 2342 transitions. [2024-11-27 23:27:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:27:18,219 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 95 [2024-11-27 23:27:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:18,227 INFO L225 Difference]: With dead ends: 1725 [2024-11-27 23:27:18,227 INFO L226 Difference]: Without dead ends: 951 [2024-11-27 23:27:18,230 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:18,231 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 131 mSDsluCounter, 1242 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 1511 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:18,231 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 1511 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:27:18,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 951 states. [2024-11-27 23:27:18,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 951 to 941. [2024-11-27 23:27:18,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 941 states, 735 states have (on average 1.3605442176870748) internal successors, (1000), 744 states have internal predecessors, (1000), 134 states have call successors, (134), 71 states have call predecessors, (134), 71 states have return successors, (134), 125 states have call predecessors, (134), 134 states have call successors, (134) [2024-11-27 23:27:18,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 941 states to 941 states and 1268 transitions. [2024-11-27 23:27:18,340 INFO L78 Accepts]: Start accepts. Automaton has 941 states and 1268 transitions. Word has length 95 [2024-11-27 23:27:18,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:18,341 INFO L471 AbstractCegarLoop]: Abstraction has 941 states and 1268 transitions. [2024-11-27 23:27:18,341 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 23:27:18,341 INFO L276 IsEmpty]: Start isEmpty. Operand 941 states and 1268 transitions. [2024-11-27 23:27:18,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-27 23:27:18,343 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:18,343 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:18,344 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-27 23:27:18,344 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:18,345 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:18,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1630829129, now seen corresponding path program 1 times [2024-11-27 23:27:18,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:18,345 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978004851] [2024-11-27 23:27:18,345 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:18,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:18,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:19,304 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 23:27:19,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:19,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978004851] [2024-11-27 23:27:19,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978004851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:19,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:19,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:27:19,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719255452] [2024-11-27 23:27:19,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:19,306 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:27:19,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:19,307 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:27:19,308 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:27:19,308 INFO L87 Difference]: Start difference. First operand 941 states and 1268 transitions. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 23:27:20,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:20,036 INFO L93 Difference]: Finished difference Result 1792 states and 2402 transitions. [2024-11-27 23:27:20,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:27:20,037 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 96 [2024-11-27 23:27:20,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:20,048 INFO L225 Difference]: With dead ends: 1792 [2024-11-27 23:27:20,049 INFO L226 Difference]: Without dead ends: 998 [2024-11-27 23:27:20,051 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:20,051 INFO L435 NwaCegarLoop]: 267 mSDtfsCounter, 508 mSDsluCounter, 918 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1185 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:20,052 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [514 Valid, 1185 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:27:20,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2024-11-27 23:27:20,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 957. [2024-11-27 23:27:20,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 957 states, 743 states have (on average 1.3364737550471064) internal successors, (993), 753 states have internal predecessors, (993), 137 states have call successors, (137), 76 states have call predecessors, (137), 76 states have return successors, (137), 127 states have call predecessors, (137), 137 states have call successors, (137) [2024-11-27 23:27:20,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 957 states to 957 states and 1267 transitions. [2024-11-27 23:27:20,179 INFO L78 Accepts]: Start accepts. Automaton has 957 states and 1267 transitions. Word has length 96 [2024-11-27 23:27:20,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:20,180 INFO L471 AbstractCegarLoop]: Abstraction has 957 states and 1267 transitions. [2024-11-27 23:27:20,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-27 23:27:20,180 INFO L276 IsEmpty]: Start isEmpty. Operand 957 states and 1267 transitions. [2024-11-27 23:27:20,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-27 23:27:20,182 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:20,182 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:20,182 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-27 23:27:20,182 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:20,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:20,183 INFO L85 PathProgramCache]: Analyzing trace with hash -1901259188, now seen corresponding path program 1 times [2024-11-27 23:27:20,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:20,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476855723] [2024-11-27 23:27:20,183 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:20,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:20,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:20,313 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:27:20,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:20,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476855723] [2024-11-27 23:27:20,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476855723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:20,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:20,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:20,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125680123] [2024-11-27 23:27:20,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:20,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:20,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:20,315 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:20,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:20,317 INFO L87 Difference]: Start difference. First operand 957 states and 1267 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:20,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:20,634 INFO L93 Difference]: Finished difference Result 2528 states and 3367 transitions. [2024-11-27 23:27:20,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:20,634 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 97 [2024-11-27 23:27:20,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:20,648 INFO L225 Difference]: With dead ends: 2528 [2024-11-27 23:27:20,649 INFO L226 Difference]: Without dead ends: 1769 [2024-11-27 23:27:20,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 23:27:20,653 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 192 mSDsluCounter, 664 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:20,655 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 1106 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:20,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1769 states. [2024-11-27 23:27:20,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1769 to 1538. [2024-11-27 23:27:20,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1538 states, 1181 states have (on average 1.3302286198137172) internal successors, (1571), 1197 states have internal predecessors, (1571), 231 states have call successors, (231), 125 states have call predecessors, (231), 125 states have return successors, (231), 215 states have call predecessors, (231), 231 states have call successors, (231) [2024-11-27 23:27:20,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1538 states to 1538 states and 2033 transitions. [2024-11-27 23:27:20,896 INFO L78 Accepts]: Start accepts. Automaton has 1538 states and 2033 transitions. Word has length 97 [2024-11-27 23:27:20,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:20,897 INFO L471 AbstractCegarLoop]: Abstraction has 1538 states and 2033 transitions. [2024-11-27 23:27:20,897 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:20,897 INFO L276 IsEmpty]: Start isEmpty. Operand 1538 states and 2033 transitions. [2024-11-27 23:27:20,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-27 23:27:20,899 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:20,900 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:20,900 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-27 23:27:20,900 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:20,901 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:20,901 INFO L85 PathProgramCache]: Analyzing trace with hash -985041855, now seen corresponding path program 1 times [2024-11-27 23:27:20,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:20,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88043697] [2024-11-27 23:27:20,901 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:20,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:21,643 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-27 23:27:21,643 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:21,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88043697] [2024-11-27 23:27:21,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88043697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:21,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:21,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:27:21,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83187373] [2024-11-27 23:27:21,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:21,644 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:27:21,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:21,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:27:21,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:27:21,645 INFO L87 Difference]: Start difference. First operand 1538 states and 2033 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:22,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:22,636 INFO L93 Difference]: Finished difference Result 3136 states and 4141 transitions. [2024-11-27 23:27:22,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-27 23:27:22,637 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 99 [2024-11-27 23:27:22,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:22,654 INFO L225 Difference]: With dead ends: 3136 [2024-11-27 23:27:22,654 INFO L226 Difference]: Without dead ends: 1874 [2024-11-27 23:27:22,659 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:27:22,660 INFO L435 NwaCegarLoop]: 292 mSDtfsCounter, 502 mSDsluCounter, 1010 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 1302 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:22,661 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [508 Valid, 1302 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-27 23:27:22,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1874 states. [2024-11-27 23:27:22,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1874 to 1563. [2024-11-27 23:27:23,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1563 states, 1193 states have (on average 1.3235540653813915) internal successors, (1579), 1210 states have internal predecessors, (1579), 239 states have call successors, (239), 130 states have call predecessors, (239), 130 states have return successors, (239), 222 states have call predecessors, (239), 239 states have call successors, (239) [2024-11-27 23:27:23,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1563 states to 1563 states and 2057 transitions. [2024-11-27 23:27:23,016 INFO L78 Accepts]: Start accepts. Automaton has 1563 states and 2057 transitions. Word has length 99 [2024-11-27 23:27:23,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:23,016 INFO L471 AbstractCegarLoop]: Abstraction has 1563 states and 2057 transitions. [2024-11-27 23:27:23,016 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:23,017 INFO L276 IsEmpty]: Start isEmpty. Operand 1563 states and 2057 transitions. [2024-11-27 23:27:23,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-27 23:27:23,019 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:23,019 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:23,019 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-27 23:27:23,020 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:23,020 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:23,020 INFO L85 PathProgramCache]: Analyzing trace with hash -8868659, now seen corresponding path program 1 times [2024-11-27 23:27:23,020 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:23,020 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525813614] [2024-11-27 23:27:23,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:23,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:23,191 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:27:23,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:23,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525813614] [2024-11-27 23:27:23,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525813614] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:23,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:23,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:23,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910529159] [2024-11-27 23:27:23,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:23,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:23,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:23,194 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:23,194 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:23,195 INFO L87 Difference]: Start difference. First operand 1563 states and 2057 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:23,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:23,854 INFO L93 Difference]: Finished difference Result 3897 states and 5161 transitions. [2024-11-27 23:27:23,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:23,856 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2024-11-27 23:27:23,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:23,875 INFO L225 Difference]: With dead ends: 3897 [2024-11-27 23:27:23,875 INFO L226 Difference]: Without dead ends: 2651 [2024-11-27 23:27:23,879 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 23:27:23,881 INFO L435 NwaCegarLoop]: 458 mSDtfsCounter, 198 mSDsluCounter, 686 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 1144 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:23,883 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 1144 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2651 states. [2024-11-27 23:27:24,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2651 to 2452. [2024-11-27 23:27:24,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2452 states, 1845 states have (on average 1.313821138211382) internal successors, (2424), 1872 states have internal predecessors, (2424), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2024-11-27 23:27:24,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2452 states to 2452 states and 3212 transitions. [2024-11-27 23:27:24,336 INFO L78 Accepts]: Start accepts. Automaton has 2452 states and 3212 transitions. Word has length 101 [2024-11-27 23:27:24,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:24,336 INFO L471 AbstractCegarLoop]: Abstraction has 2452 states and 3212 transitions. [2024-11-27 23:27:24,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:24,337 INFO L276 IsEmpty]: Start isEmpty. Operand 2452 states and 3212 transitions. [2024-11-27 23:27:24,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-27 23:27:24,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:24,341 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:24,341 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-27 23:27:24,342 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:24,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:24,342 INFO L85 PathProgramCache]: Analyzing trace with hash -151110586, now seen corresponding path program 1 times [2024-11-27 23:27:24,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:24,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543148257] [2024-11-27 23:27:24,344 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:24,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:27:24,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:24,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543148257] [2024-11-27 23:27:24,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543148257] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:24,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:24,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:24,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435838846] [2024-11-27 23:27:24,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:24,433 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:24,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:24,433 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:24,433 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:24,437 INFO L87 Difference]: Start difference. First operand 2452 states and 3212 transitions. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:24,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:24,894 INFO L93 Difference]: Finished difference Result 4705 states and 6188 transitions. [2024-11-27 23:27:24,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:24,895 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2024-11-27 23:27:24,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:24,914 INFO L225 Difference]: With dead ends: 4705 [2024-11-27 23:27:24,914 INFO L226 Difference]: Without dead ends: 2461 [2024-11-27 23:27:24,921 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 23:27:24,922 INFO L435 NwaCegarLoop]: 249 mSDtfsCounter, 3 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 466 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:24,922 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 466 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:24,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2024-11-27 23:27:25,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2455. [2024-11-27 23:27:25,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2455 states, 1848 states have (on average 1.3133116883116882) internal successors, (2427), 1875 states have internal predecessors, (2427), 394 states have call successors, (394), 212 states have call predecessors, (394), 212 states have return successors, (394), 367 states have call predecessors, (394), 394 states have call successors, (394) [2024-11-27 23:27:25,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2455 states to 2455 states and 3215 transitions. [2024-11-27 23:27:25,364 INFO L78 Accepts]: Start accepts. Automaton has 2455 states and 3215 transitions. Word has length 101 [2024-11-27 23:27:25,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:25,364 INFO L471 AbstractCegarLoop]: Abstraction has 2455 states and 3215 transitions. [2024-11-27 23:27:25,364 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:25,364 INFO L276 IsEmpty]: Start isEmpty. Operand 2455 states and 3215 transitions. [2024-11-27 23:27:25,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2024-11-27 23:27:25,367 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:25,368 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:25,368 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-27 23:27:25,368 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:25,369 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:25,369 INFO L85 PathProgramCache]: Analyzing trace with hash -341042115, now seen corresponding path program 1 times [2024-11-27 23:27:25,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:25,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914240421] [2024-11-27 23:27:25,369 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:25,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:27:25,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:25,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914240421] [2024-11-27 23:27:25,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914240421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:25,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:25,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:25,508 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904265311] [2024-11-27 23:27:25,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:25,509 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:25,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:25,509 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:25,509 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:25,510 INFO L87 Difference]: Start difference. First operand 2455 states and 3215 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:26,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:26,412 INFO L93 Difference]: Finished difference Result 5826 states and 7668 transitions. [2024-11-27 23:27:26,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:26,413 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 101 [2024-11-27 23:27:26,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:26,448 INFO L225 Difference]: With dead ends: 5826 [2024-11-27 23:27:26,449 INFO L226 Difference]: Without dead ends: 3809 [2024-11-27 23:27:26,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 23:27:26,460 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 191 mSDsluCounter, 688 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 1156 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 23:27:26,460 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [191 Valid, 1156 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:26,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3809 states. [2024-11-27 23:27:27,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3809 to 3376. [2024-11-27 23:27:27,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 2530 states have (on average 1.3094861660079051) internal successors, (3313), 2567 states have internal predecessors, (3313), 551 states have call successors, (551), 294 states have call predecessors, (551), 294 states have return successors, (551), 514 states have call predecessors, (551), 551 states have call successors, (551) [2024-11-27 23:27:27,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 4415 transitions. [2024-11-27 23:27:27,057 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 4415 transitions. Word has length 101 [2024-11-27 23:27:27,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:27,057 INFO L471 AbstractCegarLoop]: Abstraction has 3376 states and 4415 transitions. [2024-11-27 23:27:27,059 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:27,059 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 4415 transitions. [2024-11-27 23:27:27,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-27 23:27:27,062 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:27,063 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:27,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-27 23:27:27,064 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:27,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:27,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1342850110, now seen corresponding path program 1 times [2024-11-27 23:27:27,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:27,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2142227960] [2024-11-27 23:27:27,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:27,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:27,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:27,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:27:27,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:27,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2142227960] [2024-11-27 23:27:27,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2142227960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:27,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:27,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:27,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680908617] [2024-11-27 23:27:27,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:27,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:27,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:27,303 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:27,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:27,304 INFO L87 Difference]: Start difference. First operand 3376 states and 4415 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:27,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:27,865 INFO L93 Difference]: Finished difference Result 6404 states and 8398 transitions. [2024-11-27 23:27:27,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:27,865 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-11-27 23:27:27,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:27,889 INFO L225 Difference]: With dead ends: 6404 [2024-11-27 23:27:27,889 INFO L226 Difference]: Without dead ends: 3100 [2024-11-27 23:27:27,899 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:27,900 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 74 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:27,900 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 725 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:27,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3100 states. [2024-11-27 23:27:28,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3100 to 2995. [2024-11-27 23:27:28,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2995 states, 2226 states have (on average 1.3144654088050314) internal successors, (2926), 2250 states have internal predecessors, (2926), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2024-11-27 23:27:28,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2995 states to 2995 states and 3930 transitions. [2024-11-27 23:27:28,362 INFO L78 Accepts]: Start accepts. Automaton has 2995 states and 3930 transitions. Word has length 102 [2024-11-27 23:27:28,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:28,362 INFO L471 AbstractCegarLoop]: Abstraction has 2995 states and 3930 transitions. [2024-11-27 23:27:28,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:28,362 INFO L276 IsEmpty]: Start isEmpty. Operand 2995 states and 3930 transitions. [2024-11-27 23:27:28,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-27 23:27:28,365 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:28,365 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:28,365 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-27 23:27:28,365 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:28,366 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:28,366 INFO L85 PathProgramCache]: Analyzing trace with hash 687578534, now seen corresponding path program 1 times [2024-11-27 23:27:28,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:28,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [86811378] [2024-11-27 23:27:28,367 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:28,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:28,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:27:28,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:28,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [86811378] [2024-11-27 23:27:28,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [86811378] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:28,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:28,466 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 23:27:28,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618233338] [2024-11-27 23:27:28,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:28,468 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 23:27:28,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:28,468 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 23:27:28,469 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 23:27:28,469 INFO L87 Difference]: Start difference. First operand 2995 states and 3930 transitions. Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:28,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:28,988 INFO L93 Difference]: Finished difference Result 5837 states and 7691 transitions. [2024-11-27 23:27:28,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 23:27:28,989 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2024-11-27 23:27:28,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:29,025 INFO L225 Difference]: With dead ends: 5837 [2024-11-27 23:27:29,026 INFO L226 Difference]: Without dead ends: 3023 [2024-11-27 23:27:29,035 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 23:27:29,036 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 4 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 464 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:29,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 464 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 23:27:29,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2024-11-27 23:27:29,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 3002. [2024-11-27 23:27:29,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3002 states, 2233 states have (on average 1.3134796238244515) internal successors, (2933), 2257 states have internal predecessors, (2933), 502 states have call successors, (502), 266 states have call predecessors, (502), 266 states have return successors, (502), 478 states have call predecessors, (502), 502 states have call successors, (502) [2024-11-27 23:27:29,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3002 states to 3002 states and 3937 transitions. [2024-11-27 23:27:29,609 INFO L78 Accepts]: Start accepts. Automaton has 3002 states and 3937 transitions. Word has length 104 [2024-11-27 23:27:29,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:29,609 INFO L471 AbstractCegarLoop]: Abstraction has 3002 states and 3937 transitions. [2024-11-27 23:27:29,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 3 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:29,610 INFO L276 IsEmpty]: Start isEmpty. Operand 3002 states and 3937 transitions. [2024-11-27 23:27:29,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-27 23:27:29,613 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:29,614 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:27:29,614 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-27 23:27:29,616 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:29,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:29,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1642694862, now seen corresponding path program 1 times [2024-11-27 23:27:29,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:29,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064462067] [2024-11-27 23:27:29,617 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:29,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:29,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 23:27:29,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:29,896 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064462067] [2024-11-27 23:27:29,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064462067] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:27:29,896 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:27:29,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 23:27:29,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979897753] [2024-11-27 23:27:29,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:29,899 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 23:27:29,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:29,900 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 23:27:29,900 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 23:27:29,900 INFO L87 Difference]: Start difference. First operand 3002 states and 3937 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:30,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:30,461 INFO L93 Difference]: Finished difference Result 5798 states and 7628 transitions. [2024-11-27 23:27:30,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 23:27:30,462 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2024-11-27 23:27:30,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:30,485 INFO L225 Difference]: With dead ends: 5798 [2024-11-27 23:27:30,486 INFO L226 Difference]: Without dead ends: 2915 [2024-11-27 23:27:30,496 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 23:27:30,497 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 60 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:30,499 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 717 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:30,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2915 states. [2024-11-27 23:27:30,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2915 to 2759. [2024-11-27 23:27:30,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2759 states, 2049 states have (on average 1.3128355295265983) internal successors, (2690), 2068 states have internal predecessors, (2690), 464 states have call successors, (464), 245 states have call predecessors, (464), 245 states have return successors, (464), 445 states have call predecessors, (464), 464 states have call successors, (464) [2024-11-27 23:27:30,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2759 states to 2759 states and 3618 transitions. [2024-11-27 23:27:30,954 INFO L78 Accepts]: Start accepts. Automaton has 2759 states and 3618 transitions. Word has length 104 [2024-11-27 23:27:30,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:30,955 INFO L471 AbstractCegarLoop]: Abstraction has 2759 states and 3618 transitions. [2024-11-27 23:27:30,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-27 23:27:30,955 INFO L276 IsEmpty]: Start isEmpty. Operand 2759 states and 3618 transitions. [2024-11-27 23:27:30,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2024-11-27 23:27:30,963 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:30,963 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:30,964 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-27 23:27:30,964 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:30,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:30,965 INFO L85 PathProgramCache]: Analyzing trace with hash -2091605457, now seen corresponding path program 1 times [2024-11-27 23:27:30,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:30,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500744544] [2024-11-27 23:27:30,965 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:30,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:31,481 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 16 proven. 12 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-27 23:27:31,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:31,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500744544] [2024-11-27 23:27:31,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500744544] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:31,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469299191] [2024-11-27 23:27:31,481 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:31,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:31,482 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:31,489 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:31,491 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 23:27:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:31,876 INFO L256 TraceCheckSpWp]: Trace formula consists of 730 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 23:27:31,895 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 38 proven. 4 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-27 23:27:32,232 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:32,650 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 29 proven. 7 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-27 23:27:32,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469299191] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:32,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:32,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 9] total 19 [2024-11-27 23:27:32,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781042386] [2024-11-27 23:27:32,651 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:32,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-27 23:27:32,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:32,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-27 23:27:32,653 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=291, Unknown=0, NotChecked=0, Total=342 [2024-11-27 23:27:32,654 INFO L87 Difference]: Start difference. First operand 2759 states and 3618 transitions. Second operand has 19 states, 17 states have (on average 13.294117647058824) internal successors, (226), 18 states have internal predecessors, (226), 10 states have call successors, (35), 4 states have call predecessors, (35), 7 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) [2024-11-27 23:27:37,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:37,255 INFO L93 Difference]: Finished difference Result 7165 states and 9381 transitions. [2024-11-27 23:27:37,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-27 23:27:37,256 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 13.294117647058824) internal successors, (226), 18 states have internal predecessors, (226), 10 states have call successors, (35), 4 states have call predecessors, (35), 7 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) Word has length 153 [2024-11-27 23:27:37,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:37,289 INFO L225 Difference]: With dead ends: 7165 [2024-11-27 23:27:37,290 INFO L226 Difference]: Without dead ends: 4599 [2024-11-27 23:27:37,301 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 304 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 748 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=555, Invalid=2525, Unknown=0, NotChecked=0, Total=3080 [2024-11-27 23:27:37,302 INFO L435 NwaCegarLoop]: 333 mSDtfsCounter, 1808 mSDsluCounter, 4016 mSDsCounter, 0 mSdLazyCounter, 1591 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1808 SdHoareTripleChecker+Valid, 4349 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 1591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:37,303 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1808 Valid, 4349 Invalid, 2238 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [647 Valid, 1591 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-27 23:27:37,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4599 states. [2024-11-27 23:27:38,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4599 to 4200. [2024-11-27 23:27:38,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4200 states, 3097 states have (on average 1.3067484662576687) internal successors, (4047), 3125 states have internal predecessors, (4047), 720 states have call successors, (720), 382 states have call predecessors, (720), 382 states have return successors, (720), 692 states have call predecessors, (720), 720 states have call successors, (720) [2024-11-27 23:27:38,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4200 states to 4200 states and 5487 transitions. [2024-11-27 23:27:38,181 INFO L78 Accepts]: Start accepts. Automaton has 4200 states and 5487 transitions. Word has length 153 [2024-11-27 23:27:38,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:38,182 INFO L471 AbstractCegarLoop]: Abstraction has 4200 states and 5487 transitions. [2024-11-27 23:27:38,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 13.294117647058824) internal successors, (226), 18 states have internal predecessors, (226), 10 states have call successors, (35), 4 states have call predecessors, (35), 7 states have return successors, (35), 9 states have call predecessors, (35), 10 states have call successors, (35) [2024-11-27 23:27:38,182 INFO L276 IsEmpty]: Start isEmpty. Operand 4200 states and 5487 transitions. [2024-11-27 23:27:38,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2024-11-27 23:27:38,192 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:38,192 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:38,208 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 23:27:38,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-27 23:27:38,393 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:38,394 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:38,394 INFO L85 PathProgramCache]: Analyzing trace with hash 697534266, now seen corresponding path program 1 times [2024-11-27 23:27:38,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:38,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768354991] [2024-11-27 23:27:38,394 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:38,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:38,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:39,646 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 10 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-27 23:27:39,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:39,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768354991] [2024-11-27 23:27:39,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768354991] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:39,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766921607] [2024-11-27 23:27:39,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:39,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:39,648 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:39,652 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:39,654 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 23:27:40,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:40,040 INFO L256 TraceCheckSpWp]: Trace formula consists of 747 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 23:27:40,056 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:40,754 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 37 proven. 42 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-27 23:27:40,754 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:40,932 INFO L134 CoverageAnalysis]: Checked inductivity of 83 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-27 23:27:40,933 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766921607] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:40,933 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 23:27:40,933 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 15] total 22 [2024-11-27 23:27:40,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731856821] [2024-11-27 23:27:40,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:27:40,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 23:27:40,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:40,936 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 23:27:40,936 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:27:40,936 INFO L87 Difference]: Start difference. First operand 4200 states and 5487 transitions. Second operand has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:27:41,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:41,722 INFO L93 Difference]: Finished difference Result 7090 states and 9314 transitions. [2024-11-27 23:27:41,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 23:27:41,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 154 [2024-11-27 23:27:41,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:41,756 INFO L225 Difference]: With dead ends: 7090 [2024-11-27 23:27:41,757 INFO L226 Difference]: Without dead ends: 3139 [2024-11-27 23:27:41,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 294 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:27:41,772 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 0 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 740 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:41,773 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 740 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 23:27:41,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2024-11-27 23:27:42,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3139. [2024-11-27 23:27:42,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3139 states, 2338 states have (on average 1.3023952095808384) internal successors, (3045), 2358 states have internal predecessors, (3045), 518 states have call successors, (518), 282 states have call predecessors, (518), 282 states have return successors, (518), 498 states have call predecessors, (518), 518 states have call successors, (518) [2024-11-27 23:27:42,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3139 states to 3139 states and 4081 transitions. [2024-11-27 23:27:42,533 INFO L78 Accepts]: Start accepts. Automaton has 3139 states and 4081 transitions. Word has length 154 [2024-11-27 23:27:42,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:42,533 INFO L471 AbstractCegarLoop]: Abstraction has 3139 states and 4081 transitions. [2024-11-27 23:27:42,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 22.5) internal successors, (90), 5 states have internal predecessors, (90), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-27 23:27:42,534 INFO L276 IsEmpty]: Start isEmpty. Operand 3139 states and 4081 transitions. [2024-11-27 23:27:42,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-27 23:27:42,542 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:42,542 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:42,558 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 23:27:42,745 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-27 23:27:42,745 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:42,746 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:42,747 INFO L85 PathProgramCache]: Analyzing trace with hash -1323920267, now seen corresponding path program 1 times [2024-11-27 23:27:42,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:42,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57225764] [2024-11-27 23:27:42,747 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:42,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:42,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:43,849 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-27 23:27:43,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:43,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57225764] [2024-11-27 23:27:43,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57225764] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:43,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [610336595] [2024-11-27 23:27:43,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:43,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:43,851 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:43,856 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:43,860 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 23:27:44,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:44,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 764 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-27 23:27:44,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:44,743 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 32 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-27 23:27:44,744 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:45,301 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 12 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-27 23:27:45,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [610336595] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:45,302 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:45,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 24 [2024-11-27 23:27:45,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70998566] [2024-11-27 23:27:45,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:45,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-27 23:27:45,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:45,305 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-27 23:27:45,305 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-27 23:27:45,305 INFO L87 Difference]: Start difference. First operand 3139 states and 4081 transitions. Second operand has 24 states, 24 states have (on average 10.833333333333334) internal successors, (260), 22 states have internal predecessors, (260), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-11-27 23:27:53,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:53,541 INFO L93 Difference]: Finished difference Result 8927 states and 11667 transitions. [2024-11-27 23:27:53,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-27 23:27:53,544 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 10.833333333333334) internal successors, (260), 22 states have internal predecessors, (260), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) Word has length 155 [2024-11-27 23:27:53,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:53,585 INFO L225 Difference]: With dead ends: 8927 [2024-11-27 23:27:53,585 INFO L226 Difference]: Without dead ends: 6066 [2024-11-27 23:27:53,596 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 326 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1569 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=985, Invalid=5495, Unknown=0, NotChecked=0, Total=6480 [2024-11-27 23:27:53,597 INFO L435 NwaCegarLoop]: 626 mSDtfsCounter, 2697 mSDsluCounter, 6781 mSDsCounter, 0 mSdLazyCounter, 3391 mSolverCounterSat, 948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2697 SdHoareTripleChecker+Valid, 7407 SdHoareTripleChecker+Invalid, 4339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 948 IncrementalHoareTripleChecker+Valid, 3391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:53,598 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2697 Valid, 7407 Invalid, 4339 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [948 Valid, 3391 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2024-11-27 23:27:53,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6066 states. [2024-11-27 23:27:54,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6066 to 5180. [2024-11-27 23:27:54,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5180 states, 3849 states have (on average 1.3070927513639907) internal successors, (5031), 3882 states have internal predecessors, (5031), 861 states have call successors, (861), 469 states have call predecessors, (861), 469 states have return successors, (861), 828 states have call predecessors, (861), 861 states have call successors, (861) [2024-11-27 23:27:54,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5180 states to 5180 states and 6753 transitions. [2024-11-27 23:27:54,587 INFO L78 Accepts]: Start accepts. Automaton has 5180 states and 6753 transitions. Word has length 155 [2024-11-27 23:27:54,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:27:54,588 INFO L471 AbstractCegarLoop]: Abstraction has 5180 states and 6753 transitions. [2024-11-27 23:27:54,588 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 10.833333333333334) internal successors, (260), 22 states have internal predecessors, (260), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-11-27 23:27:54,588 INFO L276 IsEmpty]: Start isEmpty. Operand 5180 states and 6753 transitions. [2024-11-27 23:27:54,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2024-11-27 23:27:54,599 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:27:54,600 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:27:54,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-27 23:27:54,800 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:54,801 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:27:54,801 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:27:54,801 INFO L85 PathProgramCache]: Analyzing trace with hash -2127382271, now seen corresponding path program 1 times [2024-11-27 23:27:54,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:27:54,801 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804033010] [2024-11-27 23:27:54,801 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:54,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:27:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:55,963 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 27 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-27 23:27:55,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:27:55,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804033010] [2024-11-27 23:27:55,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804033010] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:27:55,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1300148218] [2024-11-27 23:27:55,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:27:55,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:27:55,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:27:55,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:27:55,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 23:27:56,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:27:56,352 INFO L256 TraceCheckSpWp]: Trace formula consists of 781 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-27 23:27:56,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:27:56,555 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 47 proven. 4 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2024-11-27 23:27:56,556 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:27:56,759 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2024-11-27 23:27:56,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1300148218] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:27:56,760 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:27:56,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 14 [2024-11-27 23:27:56,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931506444] [2024-11-27 23:27:56,760 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:27:56,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 23:27:56,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:27:56,763 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 23:27:56,763 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-11-27 23:27:56,764 INFO L87 Difference]: Start difference. First operand 5180 states and 6753 transitions. Second operand has 14 states, 13 states have (on average 13.846153846153847) internal successors, (180), 11 states have internal predecessors, (180), 5 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 7 states have call predecessors, (32), 5 states have call successors, (32) [2024-11-27 23:27:59,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:27:59,073 INFO L93 Difference]: Finished difference Result 13546 states and 17582 transitions. [2024-11-27 23:27:59,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-27 23:27:59,074 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 13.846153846153847) internal successors, (180), 11 states have internal predecessors, (180), 5 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 7 states have call predecessors, (32), 5 states have call successors, (32) Word has length 157 [2024-11-27 23:27:59,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:27:59,133 INFO L225 Difference]: With dead ends: 13546 [2024-11-27 23:27:59,133 INFO L226 Difference]: Without dead ends: 8570 [2024-11-27 23:27:59,150 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 339 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=112, Invalid=644, Unknown=0, NotChecked=0, Total=756 [2024-11-27 23:27:59,151 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 211 mSDsluCounter, 2532 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:27:59,151 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 2792 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-27 23:27:59,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8570 states. [2024-11-27 23:28:00,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8570 to 5866. [2024-11-27 23:28:00,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5866 states, 4344 states have (on average 1.304097605893186) internal successors, (5665), 4384 states have internal predecessors, (5665), 978 states have call successors, (978), 543 states have call predecessors, (978), 543 states have return successors, (978), 938 states have call predecessors, (978), 978 states have call successors, (978) [2024-11-27 23:28:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5866 states to 5866 states and 7621 transitions. [2024-11-27 23:28:00,551 INFO L78 Accepts]: Start accepts. Automaton has 5866 states and 7621 transitions. Word has length 157 [2024-11-27 23:28:00,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:00,552 INFO L471 AbstractCegarLoop]: Abstraction has 5866 states and 7621 transitions. [2024-11-27 23:28:00,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 13.846153846153847) internal successors, (180), 11 states have internal predecessors, (180), 5 states have call successors, (32), 4 states have call predecessors, (32), 7 states have return successors, (32), 7 states have call predecessors, (32), 5 states have call successors, (32) [2024-11-27 23:28:00,552 INFO L276 IsEmpty]: Start isEmpty. Operand 5866 states and 7621 transitions. [2024-11-27 23:28:00,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2024-11-27 23:28:00,564 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:00,564 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:28:00,579 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 23:28:00,765 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2024-11-27 23:28:00,765 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:00,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:00,766 INFO L85 PathProgramCache]: Analyzing trace with hash -1838933631, now seen corresponding path program 1 times [2024-11-27 23:28:00,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:00,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830212619] [2024-11-27 23:28:00,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:00,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 27 proven. 8 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2024-11-27 23:28:02,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:02,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830212619] [2024-11-27 23:28:02,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830212619] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:02,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909752100] [2024-11-27 23:28:02,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:02,034 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:02,034 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:02,037 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:02,042 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 23:28:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:02,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-27 23:28:02,447 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:02,831 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 75 proven. 6 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-27 23:28:02,831 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:03,255 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 29 proven. 8 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2024-11-27 23:28:03,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909752100] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:28:03,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:28:03,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 9] total 22 [2024-11-27 23:28:03,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939936488] [2024-11-27 23:28:03,256 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:03,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-27 23:28:03,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:03,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-27 23:28:03,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=392, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:28:03,260 INFO L87 Difference]: Start difference. First operand 5866 states and 7621 transitions. Second operand has 22 states, 22 states have (on average 8.0) internal successors, (176), 17 states have internal predecessors, (176), 4 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (32), 9 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-27 23:28:07,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:07,113 INFO L93 Difference]: Finished difference Result 16410 states and 21931 transitions. [2024-11-27 23:28:07,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-27 23:28:07,113 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 8.0) internal successors, (176), 17 states have internal predecessors, (176), 4 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (32), 9 states have call predecessors, (32), 4 states have call successors, (32) Word has length 173 [2024-11-27 23:28:07,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:07,171 INFO L225 Difference]: With dead ends: 16410 [2024-11-27 23:28:07,171 INFO L226 Difference]: Without dead ends: 10652 [2024-11-27 23:28:07,185 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 377 GetRequests, 340 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 243 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=242, Invalid=1240, Unknown=0, NotChecked=0, Total=1482 [2024-11-27 23:28:07,186 INFO L435 NwaCegarLoop]: 357 mSDtfsCounter, 631 mSDsluCounter, 2975 mSDsCounter, 0 mSdLazyCounter, 1102 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 631 SdHoareTripleChecker+Valid, 3332 SdHoareTripleChecker+Invalid, 1335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 1102 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:07,186 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [631 Valid, 3332 Invalid, 1335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 1102 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-27 23:28:07,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10652 states. [2024-11-27 23:28:08,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10652 to 6812. [2024-11-27 23:28:08,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6812 states, 5022 states have (on average 1.2947033054559935) internal successors, (6502), 5072 states have internal predecessors, (6502), 1150 states have call successors, (1150), 639 states have call predecessors, (1150), 639 states have return successors, (1150), 1100 states have call predecessors, (1150), 1150 states have call successors, (1150) [2024-11-27 23:28:08,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6812 states to 6812 states and 8802 transitions. [2024-11-27 23:28:08,999 INFO L78 Accepts]: Start accepts. Automaton has 6812 states and 8802 transitions. Word has length 173 [2024-11-27 23:28:08,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:09,000 INFO L471 AbstractCegarLoop]: Abstraction has 6812 states and 8802 transitions. [2024-11-27 23:28:09,000 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 8.0) internal successors, (176), 17 states have internal predecessors, (176), 4 states have call successors, (29), 4 states have call predecessors, (29), 9 states have return successors, (32), 9 states have call predecessors, (32), 4 states have call successors, (32) [2024-11-27 23:28:09,000 INFO L276 IsEmpty]: Start isEmpty. Operand 6812 states and 8802 transitions. [2024-11-27 23:28:09,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-27 23:28:09,011 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:09,011 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:28:09,025 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 23:28:09,215 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-27 23:28:09,216 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:09,217 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:09,217 INFO L85 PathProgramCache]: Analyzing trace with hash -468352694, now seen corresponding path program 1 times [2024-11-27 23:28:09,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:09,221 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148843814] [2024-11-27 23:28:09,221 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:09,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:09,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:10,915 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-27 23:28:10,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:10,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148843814] [2024-11-27 23:28:10,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148843814] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:10,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312496771] [2024-11-27 23:28:10,916 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:10,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:10,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:10,918 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:10,924 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 23:28:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:11,358 INFO L256 TraceCheckSpWp]: Trace formula consists of 835 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-27 23:28:11,365 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:12,446 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 76 proven. 14 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-27 23:28:12,446 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 23 proven. 6 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-27 23:28:14,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312496771] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:28:14,405 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:28:14,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 30 [2024-11-27 23:28:14,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232550119] [2024-11-27 23:28:14,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:14,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-11-27 23:28:14,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:14,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-11-27 23:28:14,409 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=734, Unknown=0, NotChecked=0, Total=870 [2024-11-27 23:28:14,410 INFO L87 Difference]: Start difference. First operand 6812 states and 8802 transitions. Second operand has 30 states, 30 states have (on average 9.3) internal successors, (279), 30 states have internal predecessors, (279), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) [2024-11-27 23:28:18,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:18,878 INFO L93 Difference]: Finished difference Result 14485 states and 18807 transitions. [2024-11-27 23:28:18,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-27 23:28:18,879 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 9.3) internal successors, (279), 30 states have internal predecessors, (279), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) Word has length 180 [2024-11-27 23:28:18,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:18,934 INFO L225 Difference]: With dead ends: 14485 [2024-11-27 23:28:18,934 INFO L226 Difference]: Without dead ends: 7992 [2024-11-27 23:28:18,948 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=291, Invalid=1349, Unknown=0, NotChecked=0, Total=1640 [2024-11-27 23:28:18,948 INFO L435 NwaCegarLoop]: 437 mSDtfsCounter, 1094 mSDsluCounter, 3821 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 4258 SdHoareTripleChecker+Invalid, 2300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:18,949 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 4258 Invalid, 2300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-27 23:28:18,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7992 states. [2024-11-27 23:28:20,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7992 to 7935. [2024-11-27 23:28:20,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7935 states, 5836 states have (on average 1.2947224126113777) internal successors, (7556), 5897 states have internal predecessors, (7556), 1349 states have call successors, (1349), 749 states have call predecessors, (1349), 749 states have return successors, (1349), 1288 states have call predecessors, (1349), 1349 states have call successors, (1349) [2024-11-27 23:28:20,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7935 states to 7935 states and 10254 transitions. [2024-11-27 23:28:20,719 INFO L78 Accepts]: Start accepts. Automaton has 7935 states and 10254 transitions. Word has length 180 [2024-11-27 23:28:20,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:20,720 INFO L471 AbstractCegarLoop]: Abstraction has 7935 states and 10254 transitions. [2024-11-27 23:28:20,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 9.3) internal successors, (279), 30 states have internal predecessors, (279), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) [2024-11-27 23:28:20,721 INFO L276 IsEmpty]: Start isEmpty. Operand 7935 states and 10254 transitions. [2024-11-27 23:28:20,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2024-11-27 23:28:20,732 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:20,732 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:28:20,746 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 23:28:20,937 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-27 23:28:20,937 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:20,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:20,938 INFO L85 PathProgramCache]: Analyzing trace with hash 402397944, now seen corresponding path program 1 times [2024-11-27 23:28:20,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:20,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504308762] [2024-11-27 23:28:20,938 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:20,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:21,237 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2024-11-27 23:28:21,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:21,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504308762] [2024-11-27 23:28:21,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504308762] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 23:28:21,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 23:28:21,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-27 23:28:21,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803686232] [2024-11-27 23:28:21,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 23:28:21,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 23:28:21,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:21,241 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 23:28:21,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-27 23:28:21,241 INFO L87 Difference]: Start difference. First operand 7935 states and 10254 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:28:25,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:25,543 INFO L93 Difference]: Finished difference Result 23447 states and 30380 transitions. [2024-11-27 23:28:25,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 23:28:25,545 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 180 [2024-11-27 23:28:25,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:25,616 INFO L225 Difference]: With dead ends: 23447 [2024-11-27 23:28:25,616 INFO L226 Difference]: Without dead ends: 15831 [2024-11-27 23:28:25,634 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-27 23:28:25,635 INFO L435 NwaCegarLoop]: 467 mSDtfsCounter, 215 mSDsluCounter, 2011 mSDsCounter, 0 mSdLazyCounter, 133 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 2478 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 133 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:25,635 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 2478 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 133 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 23:28:25,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15831 states. [2024-11-27 23:28:27,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15831 to 11392. [2024-11-27 23:28:27,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11392 states, 8323 states have (on average 1.2926829268292683) internal successors, (10759), 8411 states have internal predecessors, (10759), 1991 states have call successors, (1991), 1077 states have call predecessors, (1991), 1077 states have return successors, (1991), 1903 states have call predecessors, (1991), 1991 states have call successors, (1991) [2024-11-27 23:28:27,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11392 states to 11392 states and 14741 transitions. [2024-11-27 23:28:27,860 INFO L78 Accepts]: Start accepts. Automaton has 11392 states and 14741 transitions. Word has length 180 [2024-11-27 23:28:27,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:27,860 INFO L471 AbstractCegarLoop]: Abstraction has 11392 states and 14741 transitions. [2024-11-27 23:28:27,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 6 states have internal predecessors, (102), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-27 23:28:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 11392 states and 14741 transitions. [2024-11-27 23:28:27,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2024-11-27 23:28:27,874 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:27,874 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:28:27,875 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-27 23:28:27,875 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:27,875 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:27,876 INFO L85 PathProgramCache]: Analyzing trace with hash 349931155, now seen corresponding path program 1 times [2024-11-27 23:28:27,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:27,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112901556] [2024-11-27 23:28:27,876 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:27,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:29,685 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-27 23:28:29,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:29,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112901556] [2024-11-27 23:28:29,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112901556] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:29,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [443116967] [2024-11-27 23:28:29,686 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:29,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:29,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:29,689 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:29,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 23:28:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:30,095 INFO L256 TraceCheckSpWp]: Trace formula consists of 836 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-27 23:28:30,103 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:31,022 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 73 proven. 17 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-27 23:28:31,023 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:34,029 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 20 proven. 9 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-27 23:28:34,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [443116967] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:28:34,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:28:34,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 9] total 28 [2024-11-27 23:28:34,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140187818] [2024-11-27 23:28:34,030 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:34,031 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 23:28:34,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:34,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 23:28:34,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=647, Unknown=0, NotChecked=0, Total=756 [2024-11-27 23:28:34,033 INFO L87 Difference]: Start difference. First operand 11392 states and 14741 transitions. Second operand has 28 states, 28 states have (on average 10.214285714285714) internal successors, (286), 28 states have internal predecessors, (286), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) [2024-11-27 23:28:38,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:38,988 INFO L93 Difference]: Finished difference Result 23215 states and 30121 transitions. [2024-11-27 23:28:38,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-27 23:28:38,988 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 10.214285714285714) internal successors, (286), 28 states have internal predecessors, (286), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) Word has length 181 [2024-11-27 23:28:38,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:39,034 INFO L225 Difference]: With dead ends: 23215 [2024-11-27 23:28:39,034 INFO L226 Difference]: Without dead ends: 12142 [2024-11-27 23:28:39,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 350 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 440 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=294, Invalid=1428, Unknown=0, NotChecked=0, Total=1722 [2024-11-27 23:28:39,059 INFO L435 NwaCegarLoop]: 413 mSDtfsCounter, 887 mSDsluCounter, 2902 mSDsCounter, 0 mSdLazyCounter, 1588 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 887 SdHoareTripleChecker+Valid, 3315 SdHoareTripleChecker+Invalid, 1868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:39,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [887 Valid, 3315 Invalid, 1868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1588 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-27 23:28:39,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12142 states. [2024-11-27 23:28:41,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12142 to 12030. [2024-11-27 23:28:41,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12030 states, 8790 states have (on average 1.2918088737201365) internal successors, (11355), 8884 states have internal predecessors, (11355), 2100 states have call successors, (2100), 1139 states have call predecessors, (2100), 1139 states have return successors, (2100), 2006 states have call predecessors, (2100), 2100 states have call successors, (2100) [2024-11-27 23:28:41,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12030 states to 12030 states and 15555 transitions. [2024-11-27 23:28:41,826 INFO L78 Accepts]: Start accepts. Automaton has 12030 states and 15555 transitions. Word has length 181 [2024-11-27 23:28:41,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:41,826 INFO L471 AbstractCegarLoop]: Abstraction has 12030 states and 15555 transitions. [2024-11-27 23:28:41,827 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 10.214285714285714) internal successors, (286), 28 states have internal predecessors, (286), 10 states have call successors, (46), 5 states have call predecessors, (46), 6 states have return successors, (45), 10 states have call predecessors, (45), 10 states have call successors, (45) [2024-11-27 23:28:41,827 INFO L276 IsEmpty]: Start isEmpty. Operand 12030 states and 15555 transitions. [2024-11-27 23:28:41,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-27 23:28:41,834 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:41,834 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:28:41,843 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 23:28:42,035 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-27 23:28:42,036 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:28:42,036 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:28:42,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1387031853, now seen corresponding path program 1 times [2024-11-27 23:28:42,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:28:42,036 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1997749588] [2024-11-27 23:28:42,036 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:42,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:28:42,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:42,465 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-27 23:28:42,466 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:28:42,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1997749588] [2024-11-27 23:28:42,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1997749588] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:28:42,466 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611320759] [2024-11-27 23:28:42,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:28:42,466 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:28:42,466 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:28:42,469 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:28:42,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-27 23:28:42,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:28:42,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 823 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-27 23:28:42,861 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:28:43,501 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 68 proven. 22 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-27 23:28:43,501 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:28:44,138 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 15 proven. 14 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-27 23:28:44,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611320759] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:28:44,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:28:44,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 9] total 22 [2024-11-27 23:28:44,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510509512] [2024-11-27 23:28:44,138 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:28:44,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-27 23:28:44,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:28:44,140 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-27 23:28:44,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=386, Unknown=0, NotChecked=0, Total=462 [2024-11-27 23:28:44,141 INFO L87 Difference]: Start difference. First operand 12030 states and 15555 transitions. Second operand has 22 states, 22 states have (on average 13.045454545454545) internal successors, (287), 22 states have internal predecessors, (287), 9 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 9 states have call predecessors, (46), 9 states have call successors, (46) [2024-11-27 23:28:54,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:28:54,505 INFO L93 Difference]: Finished difference Result 32554 states and 42292 transitions. [2024-11-27 23:28:54,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2024-11-27 23:28:54,506 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 13.045454545454545) internal successors, (287), 22 states have internal predecessors, (287), 9 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 9 states have call predecessors, (46), 9 states have call successors, (46) Word has length 182 [2024-11-27 23:28:54,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:28:54,562 INFO L225 Difference]: With dead ends: 32554 [2024-11-27 23:28:54,562 INFO L226 Difference]: Without dead ends: 20843 [2024-11-27 23:28:54,588 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 481 GetRequests, 381 SyntacticMatches, 0 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3472 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=1536, Invalid=8766, Unknown=0, NotChecked=0, Total=10302 [2024-11-27 23:28:54,588 INFO L435 NwaCegarLoop]: 433 mSDtfsCounter, 5098 mSDsluCounter, 3885 mSDsCounter, 0 mSdLazyCounter, 2333 mSolverCounterSat, 1678 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5098 SdHoareTripleChecker+Valid, 4318 SdHoareTripleChecker+Invalid, 4011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1678 IncrementalHoareTripleChecker+Valid, 2333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2024-11-27 23:28:54,588 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5098 Valid, 4318 Invalid, 4011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1678 Valid, 2333 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2024-11-27 23:28:54,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20843 states. [2024-11-27 23:28:59,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20843 to 19315. [2024-11-27 23:28:59,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19315 states, 14199 states have (on average 1.2945982111416297) internal successors, (18382), 14347 states have internal predecessors, (18382), 3301 states have call successors, (3301), 1814 states have call predecessors, (3301), 1814 states have return successors, (3301), 3153 states have call predecessors, (3301), 3301 states have call successors, (3301) [2024-11-27 23:28:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19315 states to 19315 states and 24984 transitions. [2024-11-27 23:28:59,803 INFO L78 Accepts]: Start accepts. Automaton has 19315 states and 24984 transitions. Word has length 182 [2024-11-27 23:28:59,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:28:59,804 INFO L471 AbstractCegarLoop]: Abstraction has 19315 states and 24984 transitions. [2024-11-27 23:28:59,804 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 13.045454545454545) internal successors, (287), 22 states have internal predecessors, (287), 9 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 9 states have call predecessors, (46), 9 states have call successors, (46) [2024-11-27 23:28:59,804 INFO L276 IsEmpty]: Start isEmpty. Operand 19315 states and 24984 transitions. [2024-11-27 23:28:59,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2024-11-27 23:28:59,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:28:59,821 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:28:59,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-27 23:29:00,025 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-27 23:29:00,026 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:29:00,026 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:00,027 INFO L85 PathProgramCache]: Analyzing trace with hash -1441452950, now seen corresponding path program 1 times [2024-11-27 23:29:00,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:29:00,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118089512] [2024-11-27 23:29:00,027 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:00,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:00,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:01,624 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 25 proven. 5 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-27 23:29:01,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:01,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118089512] [2024-11-27 23:29:01,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118089512] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:01,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984768204] [2024-11-27 23:29:01,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:01,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:01,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:01,629 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:01,634 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-27 23:29:02,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:02,048 INFO L256 TraceCheckSpWp]: Trace formula consists of 821 conjuncts, 51 conjuncts are in the unsatisfiable core [2024-11-27 23:29:02,055 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:03,414 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 82 proven. 9 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-27 23:29:03,414 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:29:05,104 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 15 proven. 15 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-27 23:29:05,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984768204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:29:05,104 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:29:05,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 13] total 28 [2024-11-27 23:29:05,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118835081] [2024-11-27 23:29:05,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:29:05,106 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-27 23:29:05,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:29:05,108 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-27 23:29:05,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=637, Unknown=0, NotChecked=0, Total=756 [2024-11-27 23:29:05,109 INFO L87 Difference]: Start difference. First operand 19315 states and 24984 transitions. Second operand has 28 states, 28 states have (on average 9.857142857142858) internal successors, (276), 28 states have internal predecessors, (276), 10 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2024-11-27 23:29:19,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:19,672 INFO L93 Difference]: Finished difference Result 40998 states and 53087 transitions. [2024-11-27 23:29:19,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2024-11-27 23:29:19,673 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 9.857142857142858) internal successors, (276), 28 states have internal predecessors, (276), 10 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) Word has length 182 [2024-11-27 23:29:19,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:19,752 INFO L225 Difference]: With dead ends: 40998 [2024-11-27 23:29:19,752 INFO L226 Difference]: Without dead ends: 22002 [2024-11-27 23:29:19,787 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 364 SyntacticMatches, 0 SemanticMatches, 80 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1999 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=1229, Invalid=5413, Unknown=0, NotChecked=0, Total=6642 [2024-11-27 23:29:19,788 INFO L435 NwaCegarLoop]: 386 mSDtfsCounter, 2485 mSDsluCounter, 2912 mSDsCounter, 0 mSdLazyCounter, 1758 mSolverCounterSat, 885 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2485 SdHoareTripleChecker+Valid, 3298 SdHoareTripleChecker+Invalid, 2643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 885 IncrementalHoareTripleChecker+Valid, 1758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:19,788 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2485 Valid, 3298 Invalid, 2643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [885 Valid, 1758 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-27 23:29:19,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22002 states. [2024-11-27 23:29:25,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22002 to 21621. [2024-11-27 23:29:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21621 states, 15927 states have (on average 1.2934639291768695) internal successors, (20601), 16092 states have internal predecessors, (20601), 3664 states have call successors, (3664), 2029 states have call predecessors, (3664), 2029 states have return successors, (3664), 3499 states have call predecessors, (3664), 3664 states have call successors, (3664) [2024-11-27 23:29:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21621 states to 21621 states and 27929 transitions. [2024-11-27 23:29:25,219 INFO L78 Accepts]: Start accepts. Automaton has 21621 states and 27929 transitions. Word has length 182 [2024-11-27 23:29:25,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:25,219 INFO L471 AbstractCegarLoop]: Abstraction has 21621 states and 27929 transitions. [2024-11-27 23:29:25,220 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 9.857142857142858) internal successors, (276), 28 states have internal predecessors, (276), 10 states have call successors, (47), 5 states have call predecessors, (47), 6 states have return successors, (46), 10 states have call predecessors, (46), 10 states have call successors, (46) [2024-11-27 23:29:25,220 INFO L276 IsEmpty]: Start isEmpty. Operand 21621 states and 27929 transitions. [2024-11-27 23:29:25,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2024-11-27 23:29:25,232 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:25,232 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 23:29:25,246 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-27 23:29:25,433 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-27 23:29:25,433 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:29:25,433 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:25,433 INFO L85 PathProgramCache]: Analyzing trace with hash 1302561290, now seen corresponding path program 1 times [2024-11-27 23:29:25,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:29:25,434 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368028828] [2024-11-27 23:29:25,435 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:25,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:26,625 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-27 23:29:26,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:26,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368028828] [2024-11-27 23:29:26,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1368028828] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:26,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1019610239] [2024-11-27 23:29:26,627 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:26,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:26,628 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:26,630 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:26,635 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-27 23:29:27,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:27,089 INFO L256 TraceCheckSpWp]: Trace formula consists of 837 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-27 23:29:27,093 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:27,367 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 76 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-27 23:29:27,367 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:29:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 26 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2024-11-27 23:29:27,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1019610239] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:29:27,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:29:27,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 21 [2024-11-27 23:29:27,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212970984] [2024-11-27 23:29:27,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:29:27,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 23:29:27,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:29:27,721 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 23:29:27,721 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-11-27 23:29:27,721 INFO L87 Difference]: Start difference. First operand 21621 states and 27929 transitions. Second operand has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 18 states have internal predecessors, (228), 6 states have call successors, (37), 4 states have call predecessors, (37), 8 states have return successors, (37), 9 states have call predecessors, (37), 6 states have call successors, (37) [2024-11-27 23:29:36,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 23:29:36,160 INFO L93 Difference]: Finished difference Result 38761 states and 50071 transitions. [2024-11-27 23:29:36,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-27 23:29:36,161 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 18 states have internal predecessors, (228), 6 states have call successors, (37), 4 states have call predecessors, (37), 8 states have return successors, (37), 9 states have call predecessors, (37), 6 states have call successors, (37) Word has length 183 [2024-11-27 23:29:36,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 23:29:36,243 INFO L225 Difference]: With dead ends: 38761 [2024-11-27 23:29:36,243 INFO L226 Difference]: Without dead ends: 17488 [2024-11-27 23:29:36,282 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=207, Invalid=785, Unknown=0, NotChecked=0, Total=992 [2024-11-27 23:29:36,283 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 1473 mSDsluCounter, 2971 mSDsCounter, 0 mSdLazyCounter, 1345 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1473 SdHoareTripleChecker+Valid, 3354 SdHoareTripleChecker+Invalid, 1881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 1345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-27 23:29:36,283 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1473 Valid, 3354 Invalid, 1881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 1345 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-27 23:29:36,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17488 states. [2024-11-27 23:29:40,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17488 to 17230. [2024-11-27 23:29:40,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17230 states, 12791 states have (on average 1.289422250019545) internal successors, (16493), 12920 states have internal predecessors, (16493), 2844 states have call successors, (2844), 1594 states have call predecessors, (2844), 1594 states have return successors, (2844), 2715 states have call predecessors, (2844), 2844 states have call successors, (2844) [2024-11-27 23:29:40,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17230 states to 17230 states and 22181 transitions. [2024-11-27 23:29:40,425 INFO L78 Accepts]: Start accepts. Automaton has 17230 states and 22181 transitions. Word has length 183 [2024-11-27 23:29:40,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 23:29:40,426 INFO L471 AbstractCegarLoop]: Abstraction has 17230 states and 22181 transitions. [2024-11-27 23:29:40,426 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.857142857142858) internal successors, (228), 18 states have internal predecessors, (228), 6 states have call successors, (37), 4 states have call predecessors, (37), 8 states have return successors, (37), 9 states have call predecessors, (37), 6 states have call successors, (37) [2024-11-27 23:29:40,426 INFO L276 IsEmpty]: Start isEmpty. Operand 17230 states and 22181 transitions. [2024-11-27 23:29:40,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2024-11-27 23:29:40,432 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 23:29:40,432 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 23:29:40,441 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-27 23:29:40,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-27 23:29:40,633 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 23:29:40,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 23:29:40,633 INFO L85 PathProgramCache]: Analyzing trace with hash -668689926, now seen corresponding path program 1 times [2024-11-27 23:29:40,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 23:29:40,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352400061] [2024-11-27 23:29:40,633 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:40,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 23:29:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:41,930 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 34 proven. 9 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2024-11-27 23:29:41,933 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 23:29:41,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352400061] [2024-11-27 23:29:41,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352400061] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 23:29:41,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1467164119] [2024-11-27 23:29:41,934 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 23:29:41,934 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 23:29:41,934 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 23:29:41,938 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 23:29:41,940 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e53e6c90-0b71-446e-8da5-73b15c975d96/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-27 23:29:42,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 23:29:42,351 INFO L256 TraceCheckSpWp]: Trace formula consists of 855 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-27 23:29:42,357 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 23:29:42,768 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 102 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-27 23:29:42,768 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 23:29:43,155 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 27 proven. 6 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2024-11-27 23:29:43,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1467164119] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 23:29:43,155 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 23:29:43,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 9] total 27 [2024-11-27 23:29:43,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655510440] [2024-11-27 23:29:43,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 23:29:43,157 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-27 23:29:43,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 23:29:43,157 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-27 23:29:43,158 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2024-11-27 23:29:43,158 INFO L87 Difference]: Start difference. First operand 17230 states and 22181 transitions. Second operand has 27 states, 27 states have (on average 8.222222222222221) internal successors, (222), 21 states have internal predecessors, (222), 6 states have call successors, (40), 4 states have call predecessors, (40), 11 states have return successors, (43), 12 states have call predecessors, (43), 6 states have call successors, (43)