./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.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_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/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_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/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_0438fbf0-08c9-4720-8a9b-952f2d735397/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 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:42:18,566 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:42:18,688 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:42:18,699 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:42:18,699 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:42:18,736 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:42:18,738 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:42:18,738 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:42:18,739 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:42:18,740 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:42:18,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:42:18,741 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:42:18,742 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:42:18,742 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:42:18,743 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:42:18,743 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:42:18,743 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:42:18,743 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:42:18,743 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:42:18,744 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:42:18,744 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:42:18,744 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:42:18,744 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:42:18,744 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:42:18,744 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:42:18,744 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:42:18,744 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:42:18,744 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:42:18,744 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:42:18,744 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:42:18,745 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:42:18,746 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:42:18,746 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:42:18,746 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:42:18,746 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:42:18,747 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:42:18,747 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:42:18,747 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:42:18,747 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:42:18,747 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:42:18,747 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:42:18,747 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:42:18,748 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:42:18,748 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:42:18,748 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:42:18,749 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:42:18,749 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:42:18,749 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:42:18,749 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_0438fbf0-08c9-4720-8a9b-952f2d735397/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 -> 35b23af90f01e46e9f818578c532dc01a817e343291a24c8592db5f0da05a3c7 [2024-11-28 04:42:19,071 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:42:19,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:42:19,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:42:19,084 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:42:19,085 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:42:19,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2024-11-28 04:42:22,032 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/data/dff4217f5/b5edb229a4884c0693d8b10c499ee61d/FLAGb86aeb328 [2024-11-28 04:42:22,420 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:42:22,421 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2024-11-28 04:42:22,436 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/data/dff4217f5/b5edb229a4884c0693d8b10c499ee61d/FLAGb86aeb328 [2024-11-28 04:42:22,463 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/data/dff4217f5/b5edb229a4884c0693d8b10c499ee61d [2024-11-28 04:42:22,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:42:22,468 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:42:22,471 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:42:22,472 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:42:22,478 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:42:22,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:22" (1/1) ... [2024-11-28 04:42:22,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c86c802 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22, skipping insertion in model container [2024-11-28 04:42:22,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:42:22" (1/1) ... [2024-11-28 04:42:22,526 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:42:22,860 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_0438fbf0-08c9-4720-8a9b-952f2d735397/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2024-11-28 04:42:22,863 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:42:22,882 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:42:22,947 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_0438fbf0-08c9-4720-8a9b-952f2d735397/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c[12042,12055] [2024-11-28 04:42:22,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:42:22,969 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:42:22,970 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22 WrapperNode [2024-11-28 04:42:22,970 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:42:22,971 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:42:22,972 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:42:22,972 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:42:22,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22" (1/1) ... [2024-11-28 04:42:22,994 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22" (1/1) ... [2024-11-28 04:42:23,047 INFO L138 Inliner]: procedures = 27, calls = 46, calls flagged for inlining = 9, calls inlined = 9, statements flattened = 428 [2024-11-28 04:42:23,048 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:42:23,048 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:42:23,048 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:42:23,049 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:42:23,062 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22" (1/1) ... [2024-11-28 04:42:23,063 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22" (1/1) ... [2024-11-28 04:42:23,067 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22" (1/1) ... [2024-11-28 04:42:23,088 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]. [2024-11-28 04:42:23,088 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22" (1/1) ... [2024-11-28 04:42:23,089 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22" (1/1) ... [2024-11-28 04:42:23,101 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22" (1/1) ... [2024-11-28 04:42:23,104 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22" (1/1) ... [2024-11-28 04:42:23,117 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22" (1/1) ... [2024-11-28 04:42:23,119 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22" (1/1) ... [2024-11-28 04:42:23,125 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22" (1/1) ... [2024-11-28 04:42:23,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:42:23,129 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:42:23,129 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:42:23,130 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:42:23,131 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22" (1/1) ... [2024-11-28 04:42:23,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:42:23,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:23,162 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:42:23,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:42:23,200 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:42:23,200 INFO L130 BoogieDeclarations]: Found specification of procedure write_history_bool [2024-11-28 04:42:23,200 INFO L138 BoogieDeclarations]: Found implementation of procedure write_history_bool [2024-11-28 04:42:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-28 04:42:23,201 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-28 04:42:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_int8 [2024-11-28 04:42:23,201 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_int8 [2024-11-28 04:42:23,201 INFO L130 BoogieDeclarations]: Found specification of procedure read_history_bool [2024-11-28 04:42:23,201 INFO L138 BoogieDeclarations]: Found implementation of procedure read_history_bool [2024-11-28 04:42:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure add_history_type [2024-11-28 04:42:23,202 INFO L138 BoogieDeclarations]: Found implementation of procedure add_history_type [2024-11-28 04:42:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:42:23,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:42:23,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:42:23,348 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:42:23,350 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:42:24,112 INFO L? ?]: Removed 106 outVars from TransFormulas that were not future-live. [2024-11-28 04:42:24,112 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:42:24,133 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:42:24,137 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:42:24,137 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:24 BoogieIcfgContainer [2024-11-28 04:42:24,138 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:42:24,140 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:42:24,140 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:42:24,150 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:42:24,150 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:42:22" (1/3) ... [2024-11-28 04:42:24,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9f088e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:42:24, skipping insertion in model container [2024-11-28 04:42:24,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:42:22" (2/3) ... [2024-11-28 04:42:24,151 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e9f088e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:42:24, skipping insertion in model container [2024-11-28 04:42:24,151 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:42:24" (3/3) ... [2024-11-28 04:42:24,153 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c [2024-11-28 04:42:24,169 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:42:24,171 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_STARTPALS_Triplicated.ufo.BOUNDED-10.pals.c that has 6 procedures, 177 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:42:24,234 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:42:24,246 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@c26e52b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:42:24,247 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:42:24,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 138 states have (on average 1.6014492753623188) internal successors, (221), 142 states have internal predecessors, (221), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-28 04:42:24,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 04:42:24,259 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:24,260 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:24,260 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:24,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:24,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1823063889, now seen corresponding path program 1 times [2024-11-28 04:42:24,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:24,275 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393813673] [2024-11-28 04:42:24,275 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:24,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:24,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:24,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393813673] [2024-11-28 04:42:24,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [393813673] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:24,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:24,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:42:24,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358415378] [2024-11-28 04:42:24,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:24,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:24,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:24,751 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:24,751 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:24,754 INFO L87 Difference]: Start difference. First operand has 177 states, 138 states have (on average 1.6014492753623188) internal successors, (221), 142 states have internal predecessors, (221), 32 states have call successors, (32), 5 states have call predecessors, (32), 5 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:24,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:24,912 INFO L93 Difference]: Finished difference Result 357 states and 606 transitions. [2024-11-28 04:42:24,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:24,914 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2024-11-28 04:42:24,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:24,930 INFO L225 Difference]: With dead ends: 357 [2024-11-28 04:42:24,930 INFO L226 Difference]: Without dead ends: 179 [2024-11-28 04:42:24,941 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:24,944 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 7 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:24,944 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 803 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:24,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2024-11-28 04:42:25,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 179. [2024-11-28 04:42:25,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 140 states have (on average 1.542857142857143) internal successors, (216), 143 states have internal predecessors, (216), 32 states have call successors, (32), 6 states have call predecessors, (32), 6 states have return successors, (32), 32 states have call predecessors, (32), 32 states have call successors, (32) [2024-11-28 04:42:25,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 280 transitions. [2024-11-28 04:42:25,028 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 280 transitions. Word has length 15 [2024-11-28 04:42:25,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:25,028 INFO L471 AbstractCegarLoop]: Abstraction has 179 states and 280 transitions. [2024-11-28 04:42:25,028 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 2 states have call successors, (3), 3 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:25,028 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 280 transitions. [2024-11-28 04:42:25,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 04:42:25,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:25,030 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:25,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:42:25,031 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:25,033 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:25,033 INFO L85 PathProgramCache]: Analyzing trace with hash 2051282424, now seen corresponding path program 1 times [2024-11-28 04:42:25,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:25,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585820621] [2024-11-28 04:42:25,034 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:25,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:25,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:25,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:25,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:25,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585820621] [2024-11-28 04:42:25,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585820621] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:25,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:25,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:42:25,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985021960] [2024-11-28 04:42:25,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:25,206 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:25,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:25,206 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:25,207 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:25,207 INFO L87 Difference]: Start difference. First operand 179 states and 280 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:25,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:25,300 INFO L93 Difference]: Finished difference Result 371 states and 583 transitions. [2024-11-28 04:42:25,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:25,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-28 04:42:25,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:25,304 INFO L225 Difference]: With dead ends: 371 [2024-11-28 04:42:25,304 INFO L226 Difference]: Without dead ends: 195 [2024-11-28 04:42:25,308 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 [2024-11-28 04:42:25,309 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 25 mSDsluCounter, 535 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 807 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:25,309 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 807 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:25,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2024-11-28 04:42:25,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 192. [2024-11-28 04:42:25,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 151 states have (on average 1.5231788079470199) internal successors, (230), 154 states have internal predecessors, (230), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-28 04:42:25,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 296 transitions. [2024-11-28 04:42:25,342 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 296 transitions. Word has length 16 [2024-11-28 04:42:25,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:25,342 INFO L471 AbstractCegarLoop]: Abstraction has 192 states and 296 transitions. [2024-11-28 04:42:25,343 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 3 states have internal predecessors, (13), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:42:25,343 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 296 transitions. [2024-11-28 04:42:25,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 04:42:25,346 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:25,346 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:25,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:42:25,346 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:25,348 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:25,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1169667981, now seen corresponding path program 1 times [2024-11-28 04:42:25,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:25,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896487295] [2024-11-28 04:42:25,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:25,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:25,483 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:25,483 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:25,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896487295] [2024-11-28 04:42:25,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896487295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:25,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:25,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:42:25,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392018221] [2024-11-28 04:42:25,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:25,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:42:25,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:25,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:42:25,486 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:42:25,486 INFO L87 Difference]: Start difference. First operand 192 states and 296 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:42:25,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:25,518 INFO L93 Difference]: Finished difference Result 403 states and 629 transitions. [2024-11-28 04:42:25,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:42:25,518 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 24 [2024-11-28 04:42:25,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:25,521 INFO L225 Difference]: With dead ends: 403 [2024-11-28 04:42:25,521 INFO L226 Difference]: Without dead ends: 221 [2024-11-28 04:42:25,522 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 [2024-11-28 04:42:25,523 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 22 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 542 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:25,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 542 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:25,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2024-11-28 04:42:25,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 194. [2024-11-28 04:42:25,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 153 states have (on average 1.5163398692810457) internal successors, (232), 156 states have internal predecessors, (232), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-28 04:42:25,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 298 transitions. [2024-11-28 04:42:25,562 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 298 transitions. Word has length 24 [2024-11-28 04:42:25,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:25,562 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 298 transitions. [2024-11-28 04:42:25,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 04:42:25,563 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 298 transitions. [2024-11-28 04:42:25,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 04:42:25,566 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:25,566 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:42:25,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:42:25,566 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:25,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:25,567 INFO L85 PathProgramCache]: Analyzing trace with hash 277935782, now seen corresponding path program 1 times [2024-11-28 04:42:25,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:25,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840044848] [2024-11-28 04:42:25,567 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:25,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:25,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:25,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:25,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840044848] [2024-11-28 04:42:25,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840044848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:25,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:25,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:42:25,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823850722] [2024-11-28 04:42:25,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:25,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:42:25,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:25,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:42:25,731 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:25,731 INFO L87 Difference]: Start difference. First operand 194 states and 298 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:42:25,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:25,804 INFO L93 Difference]: Finished difference Result 378 states and 585 transitions. [2024-11-28 04:42:25,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:25,805 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-11-28 04:42:25,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:25,827 INFO L225 Difference]: With dead ends: 378 [2024-11-28 04:42:25,827 INFO L226 Difference]: Without dead ends: 200 [2024-11-28 04:42:25,828 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:25,829 INFO L435 NwaCegarLoop]: 272 mSDtfsCounter, 0 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1078 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:25,829 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1078 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:25,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2024-11-28 04:42:25,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 198. [2024-11-28 04:42:25,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 156 states have (on average 1.5064102564102564) internal successors, (235), 159 states have internal predecessors, (235), 33 states have call successors, (33), 7 states have call predecessors, (33), 8 states have return successors, (34), 34 states have call predecessors, (34), 33 states have call successors, (34) [2024-11-28 04:42:25,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 302 transitions. [2024-11-28 04:42:25,859 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 302 transitions. Word has length 32 [2024-11-28 04:42:25,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:25,861 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 302 transitions. [2024-11-28 04:42:25,861 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:42:25,861 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 302 transitions. [2024-11-28 04:42:25,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-28 04:42:25,862 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:25,862 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] [2024-11-28 04:42:25,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:42:25,863 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:25,863 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:25,864 INFO L85 PathProgramCache]: Analyzing trace with hash 111176602, now seen corresponding path program 1 times [2024-11-28 04:42:25,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:25,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331405733] [2024-11-28 04:42:25,864 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:25,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:25,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:26,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:26,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:26,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331405733] [2024-11-28 04:42:26,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331405733] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:26,015 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:26,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:42:26,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877047361] [2024-11-28 04:42:26,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:26,015 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:26,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:26,016 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:26,016 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:26,016 INFO L87 Difference]: Start difference. First operand 198 states and 302 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:42:26,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:26,090 INFO L93 Difference]: Finished difference Result 440 states and 691 transitions. [2024-11-28 04:42:26,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:26,093 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 32 [2024-11-28 04:42:26,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:26,095 INFO L225 Difference]: With dead ends: 440 [2024-11-28 04:42:26,095 INFO L226 Difference]: Without dead ends: 293 [2024-11-28 04:42:26,096 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:26,097 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 122 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:26,097 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 801 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:26,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-28 04:42:26,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 194. [2024-11-28 04:42:26,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 153 states have (on average 1.4836601307189543) internal successors, (227), 156 states have internal predecessors, (227), 33 states have call successors, (33), 7 states have call predecessors, (33), 7 states have return successors, (33), 33 states have call predecessors, (33), 33 states have call successors, (33) [2024-11-28 04:42:26,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 293 transitions. [2024-11-28 04:42:26,112 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 293 transitions. Word has length 32 [2024-11-28 04:42:26,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:26,112 INFO L471 AbstractCegarLoop]: Abstraction has 194 states and 293 transitions. [2024-11-28 04:42:26,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 4 states have internal predecessors, (26), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:42:26,114 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 293 transitions. [2024-11-28 04:42:26,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-28 04:42:26,115 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:26,115 INFO L218 NwaCegarLoop]: trace histogram [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] [2024-11-28 04:42:26,116 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:42:26,116 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:26,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:26,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1836290998, now seen corresponding path program 1 times [2024-11-28 04:42:26,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:26,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972941532] [2024-11-28 04:42:26,116 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:26,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:26,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:26,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:26,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:26,231 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972941532] [2024-11-28 04:42:26,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [972941532] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:26,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691771762] [2024-11-28 04:42:26,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:26,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:26,232 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:26,237 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:26,243 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:42:26,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:26,374 INFO L256 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:42:26,379 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:26,433 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:26,434 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:26,493 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:42:26,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691771762] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:26,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:42:26,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2024-11-28 04:42:26,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522923143] [2024-11-28 04:42:26,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:26,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:42:26,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:26,497 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:42:26,497 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:26,497 INFO L87 Difference]: Start difference. First operand 194 states and 293 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:42:26,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:26,577 INFO L93 Difference]: Finished difference Result 436 states and 673 transitions. [2024-11-28 04:42:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:26,578 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 35 [2024-11-28 04:42:26,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:26,582 INFO L225 Difference]: With dead ends: 436 [2024-11-28 04:42:26,582 INFO L226 Difference]: Without dead ends: 253 [2024-11-28 04:42:26,584 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 67 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:26,585 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 76 mSDsluCounter, 767 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:26,586 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 1036 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:26,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2024-11-28 04:42:26,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 247. [2024-11-28 04:42:26,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 196 states have (on average 1.4591836734693877) internal successors, (286), 199 states have internal predecessors, (286), 43 states have call successors, (43), 7 states have call predecessors, (43), 7 states have return successors, (43), 43 states have call predecessors, (43), 43 states have call successors, (43) [2024-11-28 04:42:26,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 372 transitions. [2024-11-28 04:42:26,614 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 372 transitions. Word has length 35 [2024-11-28 04:42:26,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:26,614 INFO L471 AbstractCegarLoop]: Abstraction has 247 states and 372 transitions. [2024-11-28 04:42:26,614 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 6 states have internal predecessors, (41), 5 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:42:26,614 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 372 transitions. [2024-11-28 04:42:26,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 04:42:26,617 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:26,618 INFO L218 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:26,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:42:26,822 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:26,822 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:26,822 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:26,823 INFO L85 PathProgramCache]: Analyzing trace with hash 209052842, now seen corresponding path program 2 times [2024-11-28 04:42:26,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:26,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394288001] [2024-11-28 04:42:26,823 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:42:26,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:26,848 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:42:26,849 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:26,944 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 04:42:26,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:26,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394288001] [2024-11-28 04:42:26,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394288001] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:26,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:26,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:42:26,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454237885] [2024-11-28 04:42:26,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:26,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:26,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:26,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:26,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:26,946 INFO L87 Difference]: Start difference. First operand 247 states and 372 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:42:27,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:27,027 INFO L93 Difference]: Finished difference Result 463 states and 722 transitions. [2024-11-28 04:42:27,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:27,028 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-28 04:42:27,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:27,030 INFO L225 Difference]: With dead ends: 463 [2024-11-28 04:42:27,030 INFO L226 Difference]: Without dead ends: 245 [2024-11-28 04:42:27,031 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 [2024-11-28 04:42:27,036 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 7 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:27,036 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 744 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:27,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-28 04:42:27,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 245. [2024-11-28 04:42:27,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 195 states have (on average 1.4564102564102563) internal successors, (284), 198 states have internal predecessors, (284), 42 states have call successors, (42), 7 states have call predecessors, (42), 7 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-28 04:42:27,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 368 transitions. [2024-11-28 04:42:27,062 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 368 transitions. Word has length 57 [2024-11-28 04:42:27,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:27,063 INFO L471 AbstractCegarLoop]: Abstraction has 245 states and 368 transitions. [2024-11-28 04:42:27,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:42:27,063 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 368 transitions. [2024-11-28 04:42:27,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-28 04:42:27,066 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:27,066 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:27,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:42:27,066 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:27,067 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:27,067 INFO L85 PathProgramCache]: Analyzing trace with hash -878032517, now seen corresponding path program 1 times [2024-11-28 04:42:27,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:27,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418107513] [2024-11-28 04:42:27,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:27,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:27,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:27,197 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2024-11-28 04:42:27,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:27,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418107513] [2024-11-28 04:42:27,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418107513] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:27,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:27,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:42:27,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281999123] [2024-11-28 04:42:27,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:27,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:27,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:27,198 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:27,198 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:27,198 INFO L87 Difference]: Start difference. First operand 245 states and 368 transitions. Second operand has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:42:27,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:27,271 INFO L93 Difference]: Finished difference Result 468 states and 720 transitions. [2024-11-28 04:42:27,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:27,273 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-28 04:42:27,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:27,275 INFO L225 Difference]: With dead ends: 468 [2024-11-28 04:42:27,275 INFO L226 Difference]: Without dead ends: 252 [2024-11-28 04:42:27,280 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 [2024-11-28 04:42:27,281 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 8 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:27,281 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 769 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:27,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2024-11-28 04:42:27,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 252. [2024-11-28 04:42:27,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 201 states have (on average 1.4527363184079602) internal successors, (292), 204 states have internal predecessors, (292), 42 states have call successors, (42), 8 states have call predecessors, (42), 8 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2024-11-28 04:42:27,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 376 transitions. [2024-11-28 04:42:27,308 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 376 transitions. Word has length 57 [2024-11-28 04:42:27,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:27,308 INFO L471 AbstractCegarLoop]: Abstraction has 252 states and 376 transitions. [2024-11-28 04:42:27,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.5) internal successors, (26), 3 states have internal predecessors, (26), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:42:27,308 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 376 transitions. [2024-11-28 04:42:27,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-28 04:42:27,313 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:27,313 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:27,313 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:42:27,313 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:27,313 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:27,313 INFO L85 PathProgramCache]: Analyzing trace with hash 2040991224, now seen corresponding path program 1 times [2024-11-28 04:42:27,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:27,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825166950] [2024-11-28 04:42:27,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:27,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:27,446 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:42:27,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:27,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825166950] [2024-11-28 04:42:27,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825166950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:27,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:27,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:42:27,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782375363] [2024-11-28 04:42:27,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:27,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:27,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:27,448 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:27,448 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:27,448 INFO L87 Difference]: Start difference. First operand 252 states and 376 transitions. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:42:27,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:27,507 INFO L93 Difference]: Finished difference Result 514 states and 778 transitions. [2024-11-28 04:42:27,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:27,508 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 58 [2024-11-28 04:42:27,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:27,512 INFO L225 Difference]: With dead ends: 514 [2024-11-28 04:42:27,513 INFO L226 Difference]: Without dead ends: 291 [2024-11-28 04:42:27,514 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 [2024-11-28 04:42:27,515 INFO L435 NwaCegarLoop]: 270 mSDtfsCounter, 24 mSDsluCounter, 517 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 787 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:27,515 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 787 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:27,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-28 04:42:27,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 288. [2024-11-28 04:42:27,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 233 states have (on average 1.4120171673819744) internal successors, (329), 236 states have internal predecessors, (329), 45 states have call successors, (45), 9 states have call predecessors, (45), 9 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 04:42:27,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 419 transitions. [2024-11-28 04:42:27,541 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 419 transitions. Word has length 58 [2024-11-28 04:42:27,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:27,542 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 419 transitions. [2024-11-28 04:42:27,542 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 3 states have internal predecessors, (29), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-28 04:42:27,542 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 419 transitions. [2024-11-28 04:42:27,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-28 04:42:27,543 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:27,543 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:27,544 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:42:27,544 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:27,544 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:27,544 INFO L85 PathProgramCache]: Analyzing trace with hash -521920408, now seen corresponding path program 1 times [2024-11-28 04:42:27,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:27,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168597088] [2024-11-28 04:42:27,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:27,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:27,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:27,729 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-28 04:42:27,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:27,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168597088] [2024-11-28 04:42:27,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168597088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:27,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:27,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:42:27,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498155605] [2024-11-28 04:42:27,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:27,731 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:42:27,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:27,732 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:42:27,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:27,732 INFO L87 Difference]: Start difference. First operand 288 states and 419 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:42:27,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:27,779 INFO L93 Difference]: Finished difference Result 525 states and 777 transitions. [2024-11-28 04:42:27,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:27,780 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 76 [2024-11-28 04:42:27,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:27,783 INFO L225 Difference]: With dead ends: 525 [2024-11-28 04:42:27,784 INFO L226 Difference]: Without dead ends: 290 [2024-11-28 04:42:27,785 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:27,786 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 0 mSDsluCounter, 784 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:27,786 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1049 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:27,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-28 04:42:27,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 288. [2024-11-28 04:42:27,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 288 states, 233 states have (on average 1.3991416309012876) internal successors, (326), 236 states have internal predecessors, (326), 45 states have call successors, (45), 9 states have call predecessors, (45), 9 states have return successors, (45), 45 states have call predecessors, (45), 45 states have call successors, (45) [2024-11-28 04:42:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 288 states to 288 states and 416 transitions. [2024-11-28 04:42:27,819 INFO L78 Accepts]: Start accepts. Automaton has 288 states and 416 transitions. Word has length 76 [2024-11-28 04:42:27,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:27,819 INFO L471 AbstractCegarLoop]: Abstraction has 288 states and 416 transitions. [2024-11-28 04:42:27,820 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:42:27,820 INFO L276 IsEmpty]: Start isEmpty. Operand 288 states and 416 transitions. [2024-11-28 04:42:27,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-28 04:42:27,821 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:27,821 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:27,821 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:42:27,821 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:27,821 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:27,822 INFO L85 PathProgramCache]: Analyzing trace with hash -1170030260, now seen corresponding path program 1 times [2024-11-28 04:42:27,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:27,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573647222] [2024-11-28 04:42:27,822 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:27,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:27,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:27,991 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2024-11-28 04:42:27,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:27,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573647222] [2024-11-28 04:42:27,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573647222] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:27,992 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:27,992 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:42:27,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213962686] [2024-11-28 04:42:27,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:27,993 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:27,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:27,993 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:27,994 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:27,994 INFO L87 Difference]: Start difference. First operand 288 states and 416 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, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:42:28,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:28,060 INFO L93 Difference]: Finished difference Result 512 states and 761 transitions. [2024-11-28 04:42:28,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:28,061 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, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 105 [2024-11-28 04:42:28,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:28,063 INFO L225 Difference]: With dead ends: 512 [2024-11-28 04:42:28,063 INFO L226 Difference]: Without dead ends: 282 [2024-11-28 04:42:28,064 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 [2024-11-28 04:42:28,067 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 9 mSDsluCounter, 495 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:28,067 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 752 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:28,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-28 04:42:28,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2024-11-28 04:42:28,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 228 states have (on average 1.3771929824561404) internal successors, (314), 231 states have internal predecessors, (314), 44 states have call successors, (44), 9 states have call predecessors, (44), 9 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-28 04:42:28,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 402 transitions. [2024-11-28 04:42:28,097 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 402 transitions. Word has length 105 [2024-11-28 04:42:28,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:28,098 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 402 transitions. [2024-11-28 04:42:28,098 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, (7), 3 states have call predecessors, (7), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:42:28,098 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 402 transitions. [2024-11-28 04:42:28,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2024-11-28 04:42:28,101 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:28,102 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:28,102 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:42:28,102 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:28,102 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:28,103 INFO L85 PathProgramCache]: Analyzing trace with hash -2085053298, now seen corresponding path program 1 times [2024-11-28 04:42:28,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:28,103 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846635647] [2024-11-28 04:42:28,103 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:28,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:28,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:28,285 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 243 trivial. 0 not checked. [2024-11-28 04:42:28,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:28,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846635647] [2024-11-28 04:42:28,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846635647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:28,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [625442896] [2024-11-28 04:42:28,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:28,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:28,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:28,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:28,290 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:42:28,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:28,515 INFO L256 TraceCheckSpWp]: Trace formula consists of 522 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:42:28,523 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:28,585 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 96 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2024-11-28 04:42:28,585 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:28,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [625442896] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:28,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:28,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:42:28,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731149077] [2024-11-28 04:42:28,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:28,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:28,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:28,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:28,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:28,588 INFO L87 Difference]: Start difference. First operand 282 states and 402 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:42:28,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:28,680 INFO L93 Difference]: Finished difference Result 509 states and 741 transitions. [2024-11-28 04:42:28,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:28,681 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 136 [2024-11-28 04:42:28,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:28,684 INFO L225 Difference]: With dead ends: 509 [2024-11-28 04:42:28,684 INFO L226 Difference]: Without dead ends: 265 [2024-11-28 04:42:28,685 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:42:28,686 INFO L435 NwaCegarLoop]: 248 mSDtfsCounter, 35 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:28,686 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 708 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:42:28,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2024-11-28 04:42:28,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 265. [2024-11-28 04:42:28,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 265 states, 214 states have (on average 1.3691588785046729) internal successors, (293), 217 states have internal predecessors, (293), 41 states have call successors, (41), 9 states have call predecessors, (41), 9 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-28 04:42:28,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 375 transitions. [2024-11-28 04:42:28,708 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 375 transitions. Word has length 136 [2024-11-28 04:42:28,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:28,709 INFO L471 AbstractCegarLoop]: Abstraction has 265 states and 375 transitions. [2024-11-28 04:42:28,709 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:42:28,710 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 375 transitions. [2024-11-28 04:42:28,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2024-11-28 04:42:28,712 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:28,712 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:28,724 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 04:42:28,913 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:28,913 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:28,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:28,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1935764498, now seen corresponding path program 1 times [2024-11-28 04:42:28,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:28,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381229141] [2024-11-28 04:42:28,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:28,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:28,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:29,096 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 30 proven. 8 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2024-11-28 04:42:29,096 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:29,096 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381229141] [2024-11-28 04:42:29,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381229141] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:29,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1162546400] [2024-11-28 04:42:29,097 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:29,097 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:29,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:29,099 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:29,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:42:29,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:29,329 INFO L256 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:42:29,334 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 107 proven. 0 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-11-28 04:42:29,383 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:29,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1162546400] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:29,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:29,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:42:29,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103672624] [2024-11-28 04:42:29,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:29,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:29,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:29,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:29,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:29,385 INFO L87 Difference]: Start difference. First operand 265 states and 375 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:42:29,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:29,477 INFO L93 Difference]: Finished difference Result 475 states and 687 transitions. [2024-11-28 04:42:29,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:29,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 140 [2024-11-28 04:42:29,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:29,481 INFO L225 Difference]: With dead ends: 475 [2024-11-28 04:42:29,481 INFO L226 Difference]: Without dead ends: 246 [2024-11-28 04:42:29,482 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:42:29,482 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 37 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:29,483 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 704 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:42:29,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2024-11-28 04:42:29,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 246. [2024-11-28 04:42:29,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 198 states have (on average 1.3636363636363635) internal successors, (270), 201 states have internal predecessors, (270), 38 states have call successors, (38), 9 states have call predecessors, (38), 9 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2024-11-28 04:42:29,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 346 transitions. [2024-11-28 04:42:29,501 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 346 transitions. Word has length 140 [2024-11-28 04:42:29,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:29,502 INFO L471 AbstractCegarLoop]: Abstraction has 246 states and 346 transitions. [2024-11-28 04:42:29,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:42:29,503 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 346 transitions. [2024-11-28 04:42:29,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 04:42:29,504 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:29,504 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:29,519 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 04:42:29,708 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:29,709 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:29,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash -659688106, now seen corresponding path program 1 times [2024-11-28 04:42:29,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:29,709 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102245622] [2024-11-28 04:42:29,709 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:29,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:29,871 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 21 proven. 6 refuted. 0 times theorem prover too weak. 205 trivial. 0 not checked. [2024-11-28 04:42:29,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:29,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102245622] [2024-11-28 04:42:29,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102245622] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:29,871 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2000577689] [2024-11-28 04:42:29,871 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:29,872 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:29,874 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:29,876 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:29,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:42:30,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:30,104 INFO L256 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:42:30,111 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:30,179 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2024-11-28 04:42:30,179 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:30,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2000577689] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:30,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:30,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2024-11-28 04:42:30,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321771536] [2024-11-28 04:42:30,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:30,180 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:30,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:30,181 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:30,181 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:30,181 INFO L87 Difference]: Start difference. First operand 246 states and 346 transitions. Second operand has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:42:30,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:30,276 INFO L93 Difference]: Finished difference Result 466 states and 670 transitions. [2024-11-28 04:42:30,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:30,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 143 [2024-11-28 04:42:30,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:30,280 INFO L225 Difference]: With dead ends: 466 [2024-11-28 04:42:30,280 INFO L226 Difference]: Without dead ends: 278 [2024-11-28 04:42:30,281 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 143 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:42:30,282 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 33 mSDsluCounter, 460 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:30,282 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 717 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:42:30,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2024-11-28 04:42:30,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2024-11-28 04:42:30,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 226 states have (on average 1.3628318584070795) internal successors, (308), 229 states have internal predecessors, (308), 41 states have call successors, (41), 10 states have call predecessors, (41), 10 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-28 04:42:30,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 390 transitions. [2024-11-28 04:42:30,300 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 390 transitions. Word has length 143 [2024-11-28 04:42:30,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:30,300 INFO L471 AbstractCegarLoop]: Abstraction has 278 states and 390 transitions. [2024-11-28 04:42:30,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.25) internal successors, (69), 4 states have internal predecessors, (69), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:42:30,301 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 390 transitions. [2024-11-28 04:42:30,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2024-11-28 04:42:30,303 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:30,303 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:30,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 04:42:30,503 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:30,503 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:30,504 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:30,504 INFO L85 PathProgramCache]: Analyzing trace with hash -2107587412, now seen corresponding path program 2 times [2024-11-28 04:42:30,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:30,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712965343] [2024-11-28 04:42:30,504 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:42:30,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:30,529 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:42:30,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:42:30,597 INFO L134 CoverageAnalysis]: Checked inductivity of 232 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-28 04:42:30,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:30,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712965343] [2024-11-28 04:42:30,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712965343] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:30,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:30,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:42:30,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091887293] [2024-11-28 04:42:30,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:30,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:30,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:30,599 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:30,600 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:30,600 INFO L87 Difference]: Start difference. First operand 278 states and 390 transitions. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-28 04:42:30,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:30,654 INFO L93 Difference]: Finished difference Result 421 states and 606 transitions. [2024-11-28 04:42:30,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:30,655 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) Word has length 143 [2024-11-28 04:42:30,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:30,659 INFO L225 Difference]: With dead ends: 421 [2024-11-28 04:42:30,659 INFO L226 Difference]: Without dead ends: 282 [2024-11-28 04:42:30,661 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 [2024-11-28 04:42:30,661 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 3 mSDsluCounter, 505 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:30,662 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 761 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:30,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2024-11-28 04:42:30,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 282. [2024-11-28 04:42:30,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 229 states have (on average 1.3580786026200873) internal successors, (311), 232 states have internal predecessors, (311), 41 states have call successors, (41), 11 states have call predecessors, (41), 11 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-28 04:42:30,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 393 transitions. [2024-11-28 04:42:30,684 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 393 transitions. Word has length 143 [2024-11-28 04:42:30,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:30,684 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 393 transitions. [2024-11-28 04:42:30,685 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 3 states have internal predecessors, (57), 2 states have call successors, (10), 3 states have call predecessors, (10), 1 states have return successors, (8), 1 states have call predecessors, (8), 1 states have call successors, (8) [2024-11-28 04:42:30,685 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 393 transitions. [2024-11-28 04:42:30,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2024-11-28 04:42:30,687 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:30,688 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:30,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:42:30,688 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:30,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:30,689 INFO L85 PathProgramCache]: Analyzing trace with hash 1463054989, now seen corresponding path program 1 times [2024-11-28 04:42:30,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:30,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471322887] [2024-11-28 04:42:30,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:30,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:30,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:30,861 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2024-11-28 04:42:30,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471322887] [2024-11-28 04:42:30,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471322887] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:30,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [853615534] [2024-11-28 04:42:30,861 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:30,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:30,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:30,866 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:30,868 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:42:31,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:31,079 INFO L256 TraceCheckSpWp]: Trace formula consists of 591 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:42:31,084 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:31,134 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 232 trivial. 0 not checked. [2024-11-28 04:42:31,135 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:31,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [853615534] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:31,135 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:31,135 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 04:42:31,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176872359] [2024-11-28 04:42:31,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:31,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:31,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:31,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:31,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:42:31,137 INFO L87 Difference]: Start difference. First operand 282 states and 393 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-28 04:42:31,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:31,191 INFO L93 Difference]: Finished difference Result 430 states and 614 transitions. [2024-11-28 04:42:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:31,192 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) Word has length 150 [2024-11-28 04:42:31,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:31,194 INFO L225 Difference]: With dead ends: 430 [2024-11-28 04:42:31,195 INFO L226 Difference]: Without dead ends: 287 [2024-11-28 04:42:31,197 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:42:31,198 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 4 mSDsluCounter, 506 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 763 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:31,199 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 763 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:31,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2024-11-28 04:42:31,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 287. [2024-11-28 04:42:31,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 233 states have (on average 1.351931330472103) internal successors, (315), 236 states have internal predecessors, (315), 41 states have call successors, (41), 12 states have call predecessors, (41), 12 states have return successors, (41), 41 states have call predecessors, (41), 41 states have call successors, (41) [2024-11-28 04:42:31,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 397 transitions. [2024-11-28 04:42:31,221 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 397 transitions. Word has length 150 [2024-11-28 04:42:31,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:31,222 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 397 transitions. [2024-11-28 04:42:31,222 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 1 states have call predecessors, (9), 1 states have call successors, (9) [2024-11-28 04:42:31,222 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 397 transitions. [2024-11-28 04:42:31,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-28 04:42:31,226 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:31,226 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:31,236 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:42:31,427 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 04:42:31,427 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:31,428 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:31,429 INFO L85 PathProgramCache]: Analyzing trace with hash -2093957054, now seen corresponding path program 1 times [2024-11-28 04:42:31,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:31,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134845368] [2024-11-28 04:42:31,429 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:31,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:31,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:31,662 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 9 proven. 2 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2024-11-28 04:42:31,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:31,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134845368] [2024-11-28 04:42:31,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134845368] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:31,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [629252552] [2024-11-28 04:42:31,663 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:31,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:31,663 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:31,665 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:31,669 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:42:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:31,882 INFO L256 TraceCheckSpWp]: Trace formula consists of 652 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:42:31,885 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:31,918 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 236 trivial. 0 not checked. [2024-11-28 04:42:31,918 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:31,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [629252552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:31,919 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:31,919 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 04:42:31,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515120273] [2024-11-28 04:42:31,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:31,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:31,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:31,920 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:31,920 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:42:31,920 INFO L87 Difference]: Start difference. First operand 287 states and 397 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-28 04:42:31,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:31,974 INFO L93 Difference]: Finished difference Result 434 states and 614 transitions. [2024-11-28 04:42:31,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:31,975 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) Word has length 158 [2024-11-28 04:42:31,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:31,977 INFO L225 Difference]: With dead ends: 434 [2024-11-28 04:42:31,978 INFO L226 Difference]: Without dead ends: 286 [2024-11-28 04:42:31,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:42:31,979 INFO L435 NwaCegarLoop]: 254 mSDtfsCounter, 5 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:31,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 753 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:31,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-28 04:42:31,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 286. [2024-11-28 04:42:31,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 233 states have (on average 1.3390557939914163) internal successors, (312), 235 states have internal predecessors, (312), 40 states have call successors, (40), 12 states have call predecessors, (40), 12 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2024-11-28 04:42:31,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 392 transitions. [2024-11-28 04:42:32,000 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 392 transitions. Word has length 158 [2024-11-28 04:42:32,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:32,000 INFO L471 AbstractCegarLoop]: Abstraction has 286 states and 392 transitions. [2024-11-28 04:42:32,001 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 2 states have call successors, (12), 3 states have call predecessors, (12), 1 states have return successors, (10), 1 states have call predecessors, (10), 1 states have call successors, (10) [2024-11-28 04:42:32,001 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 392 transitions. [2024-11-28 04:42:32,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2024-11-28 04:42:32,003 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:32,003 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:32,014 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:42:32,204 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 04:42:32,204 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:32,205 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:32,205 INFO L85 PathProgramCache]: Analyzing trace with hash -980053281, now seen corresponding path program 1 times [2024-11-28 04:42:32,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:32,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974075020] [2024-11-28 04:42:32,205 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:32,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:32,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:32,401 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-28 04:42:32,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:32,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974075020] [2024-11-28 04:42:32,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974075020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:32,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677212518] [2024-11-28 04:42:32,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:32,402 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:32,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:32,405 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:32,409 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:42:32,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:32,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 693 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:42:32,664 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:32,688 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-28 04:42:32,690 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:32,690 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677212518] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:32,690 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:32,690 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:42:32,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737681954] [2024-11-28 04:42:32,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:32,691 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:42:32,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:32,691 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:42:32,692 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:32,692 INFO L87 Difference]: Start difference. First operand 286 states and 392 transitions. Second operand has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-28 04:42:32,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:32,711 INFO L93 Difference]: Finished difference Result 432 states and 603 transitions. [2024-11-28 04:42:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:42:32,712 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) Word has length 166 [2024-11-28 04:42:32,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:32,715 INFO L225 Difference]: With dead ends: 432 [2024-11-28 04:42:32,715 INFO L226 Difference]: Without dead ends: 285 [2024-11-28 04:42:32,716 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:32,716 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 0 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 502 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:32,717 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 502 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:32,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-28 04:42:32,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-11-28 04:42:32,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 233 states have (on average 1.3347639484978542) internal successors, (311), 234 states have internal predecessors, (311), 39 states have call successors, (39), 12 states have call predecessors, (39), 12 states have return successors, (39), 39 states have call predecessors, (39), 39 states have call successors, (39) [2024-11-28 04:42:32,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 389 transitions. [2024-11-28 04:42:32,735 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 389 transitions. Word has length 166 [2024-11-28 04:42:32,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:32,736 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 389 transitions. [2024-11-28 04:42:32,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.333333333333332) internal successors, (70), 3 states have internal predecessors, (70), 2 states have call successors, (12), 2 states have call predecessors, (12), 1 states have return successors, (11), 1 states have call predecessors, (11), 1 states have call successors, (11) [2024-11-28 04:42:32,736 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 389 transitions. [2024-11-28 04:42:32,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2024-11-28 04:42:32,738 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:32,739 INFO L218 NwaCegarLoop]: trace histogram [8, 7, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:32,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:42:32,939 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:42:32,940 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:32,940 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:32,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1588143506, now seen corresponding path program 1 times [2024-11-28 04:42:32,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:32,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1877446275] [2024-11-28 04:42:32,941 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:32,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:32,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:33,133 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 239 trivial. 0 not checked. [2024-11-28 04:42:33,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:33,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1877446275] [2024-11-28 04:42:33,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1877446275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:33,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1672450453] [2024-11-28 04:42:33,134 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:33,134 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:33,134 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:33,136 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:33,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:42:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:33,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 687 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 04:42:33,412 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:33,495 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2024-11-28 04:42:33,496 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:33,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1672450453] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:33,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:33,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 04:42:33,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783659820] [2024-11-28 04:42:33,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:33,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:33,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:33,498 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:33,499 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:42:33,499 INFO L87 Difference]: Start difference. First operand 285 states and 389 transitions. Second operand has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:42:33,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:33,640 INFO L93 Difference]: Finished difference Result 645 states and 886 transitions. [2024-11-28 04:42:33,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:33,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 168 [2024-11-28 04:42:33,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:33,645 INFO L225 Difference]: With dead ends: 645 [2024-11-28 04:42:33,645 INFO L226 Difference]: Without dead ends: 499 [2024-11-28 04:42:33,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:42:33,647 INFO L435 NwaCegarLoop]: 309 mSDtfsCounter, 329 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 693 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:33,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 693 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:42:33,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2024-11-28 04:42:33,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 444. [2024-11-28 04:42:33,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 362 states have (on average 1.361878453038674) internal successors, (493), 364 states have internal predecessors, (493), 57 states have call successors, (57), 24 states have call predecessors, (57), 24 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-28 04:42:33,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 607 transitions. [2024-11-28 04:42:33,678 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 607 transitions. Word has length 168 [2024-11-28 04:42:33,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:33,679 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 607 transitions. [2024-11-28 04:42:33,679 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.0) internal successors, (72), 4 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-11-28 04:42:33,679 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 607 transitions. [2024-11-28 04:42:33,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2024-11-28 04:42:33,683 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:33,683 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:33,693 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 04:42:33,883 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:33,884 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:33,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:33,884 INFO L85 PathProgramCache]: Analyzing trace with hash -990875580, now seen corresponding path program 1 times [2024-11-28 04:42:33,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:33,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944505308] [2024-11-28 04:42:33,884 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:33,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:33,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:34,088 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-11-28 04:42:34,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:34,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944505308] [2024-11-28 04:42:34,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944505308] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:34,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040417172] [2024-11-28 04:42:34,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:34,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:34,089 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:34,091 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:34,095 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:42:34,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:34,376 INFO L256 TraceCheckSpWp]: Trace formula consists of 795 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:42:34,380 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:34,425 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 257 trivial. 0 not checked. [2024-11-28 04:42:34,425 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:34,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040417172] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:34,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:34,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 04:42:34,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934597804] [2024-11-28 04:42:34,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:34,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:34,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:34,427 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:34,428 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:42:34,428 INFO L87 Difference]: Start difference. First operand 444 states and 607 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:42:34,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:34,565 INFO L93 Difference]: Finished difference Result 688 states and 960 transitions. [2024-11-28 04:42:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:34,565 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 196 [2024-11-28 04:42:34,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:34,571 INFO L225 Difference]: With dead ends: 688 [2024-11-28 04:42:34,571 INFO L226 Difference]: Without dead ends: 444 [2024-11-28 04:42:34,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 196 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:42:34,572 INFO L435 NwaCegarLoop]: 237 mSDtfsCounter, 31 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:34,573 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 688 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:42:34,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 444 states. [2024-11-28 04:42:34,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 444 to 444. [2024-11-28 04:42:34,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 362 states have (on average 1.3453038674033149) internal successors, (487), 364 states have internal predecessors, (487), 57 states have call successors, (57), 24 states have call predecessors, (57), 24 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-28 04:42:34,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 601 transitions. [2024-11-28 04:42:34,603 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 601 transitions. Word has length 196 [2024-11-28 04:42:34,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:34,604 INFO L471 AbstractCegarLoop]: Abstraction has 444 states and 601 transitions. [2024-11-28 04:42:34,604 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:42:34,605 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 601 transitions. [2024-11-28 04:42:34,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-28 04:42:34,608 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:34,608 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:34,620 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:42:34,809 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:34,809 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:34,810 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:34,810 INFO L85 PathProgramCache]: Analyzing trace with hash -879394195, now seen corresponding path program 1 times [2024-11-28 04:42:34,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:34,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140028330] [2024-11-28 04:42:34,811 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:34,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:34,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:35,016 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-11-28 04:42:35,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:35,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140028330] [2024-11-28 04:42:35,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140028330] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:35,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [959492321] [2024-11-28 04:42:35,017 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:35,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:35,017 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:35,019 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:35,022 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 04:42:35,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:35,321 INFO L256 TraceCheckSpWp]: Trace formula consists of 796 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:42:35,326 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:35,373 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2024-11-28 04:42:35,373 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:35,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [959492321] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:35,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:35,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-11-28 04:42:35,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789767493] [2024-11-28 04:42:35,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:35,375 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:35,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:35,376 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:35,376 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:42:35,377 INFO L87 Difference]: Start difference. First operand 444 states and 601 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:42:35,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:35,503 INFO L93 Difference]: Finished difference Result 688 states and 946 transitions. [2024-11-28 04:42:35,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:35,504 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 197 [2024-11-28 04:42:35,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:35,509 INFO L225 Difference]: With dead ends: 688 [2024-11-28 04:42:35,509 INFO L226 Difference]: Without dead ends: 456 [2024-11-28 04:42:35,510 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 197 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:42:35,511 INFO L435 NwaCegarLoop]: 239 mSDtfsCounter, 7 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:35,511 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 696 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:42:35,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 456 states. [2024-11-28 04:42:35,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 456 to 456. [2024-11-28 04:42:35,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 456 states, 372 states have (on average 1.346774193548387) internal successors, (501), 374 states have internal predecessors, (501), 57 states have call successors, (57), 26 states have call predecessors, (57), 26 states have return successors, (57), 56 states have call predecessors, (57), 57 states have call successors, (57) [2024-11-28 04:42:35,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 615 transitions. [2024-11-28 04:42:35,557 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 615 transitions. Word has length 197 [2024-11-28 04:42:35,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:35,558 INFO L471 AbstractCegarLoop]: Abstraction has 456 states and 615 transitions. [2024-11-28 04:42:35,558 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:42:35,558 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 615 transitions. [2024-11-28 04:42:35,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2024-11-28 04:42:35,563 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:35,563 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:35,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 04:42:35,767 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:35,767 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:35,768 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:35,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1134361886, now seen corresponding path program 1 times [2024-11-28 04:42:35,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:35,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965510310] [2024-11-28 04:42:35,768 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:35,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:35,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:35,959 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-11-28 04:42:35,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:35,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965510310] [2024-11-28 04:42:35,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965510310] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:35,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347436270] [2024-11-28 04:42:35,959 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:35,959 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:35,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:35,963 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:35,966 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 04:42:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:36,236 INFO L256 TraceCheckSpWp]: Trace formula consists of 797 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:42:36,241 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2024-11-28 04:42:36,368 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:36,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347436270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:36,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:36,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:42:36,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201608069] [2024-11-28 04:42:36,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:36,369 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:42:36,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:36,370 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:42:36,370 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:36,370 INFO L87 Difference]: Start difference. First operand 456 states and 615 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 04:42:36,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:36,451 INFO L93 Difference]: Finished difference Result 962 states and 1323 transitions. [2024-11-28 04:42:36,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:42:36,452 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 198 [2024-11-28 04:42:36,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:36,457 INFO L225 Difference]: With dead ends: 962 [2024-11-28 04:42:36,458 INFO L226 Difference]: Without dead ends: 718 [2024-11-28 04:42:36,459 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 202 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:36,462 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 161 mSDsluCounter, 241 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 520 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:36,463 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 520 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:36,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2024-11-28 04:42:36,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 541. [2024-11-28 04:42:36,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 447 states have (on average 1.3557046979865772) internal successors, (606), 450 states have internal predecessors, (606), 62 states have call successors, (62), 31 states have call predecessors, (62), 31 states have return successors, (62), 61 states have call predecessors, (62), 62 states have call successors, (62) [2024-11-28 04:42:36,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 730 transitions. [2024-11-28 04:42:36,512 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 730 transitions. Word has length 198 [2024-11-28 04:42:36,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:36,512 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 730 transitions. [2024-11-28 04:42:36,513 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 04:42:36,513 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 730 transitions. [2024-11-28 04:42:36,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-28 04:42:36,516 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:36,516 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:36,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-28 04:42:36,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:36,717 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:36,718 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:36,718 INFO L85 PathProgramCache]: Analyzing trace with hash 1990356785, now seen corresponding path program 1 times [2024-11-28 04:42:36,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:36,718 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445254126] [2024-11-28 04:42:36,719 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:36,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:36,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:36,910 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-11-28 04:42:36,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:36,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445254126] [2024-11-28 04:42:36,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1445254126] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:36,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1691303659] [2024-11-28 04:42:36,911 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:36,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:36,911 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:36,913 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:36,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 04:42:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:37,163 INFO L256 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:42:37,174 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:37,254 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2024-11-28 04:42:37,256 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:37,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1691303659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:37,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:37,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:42:37,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1699972608] [2024-11-28 04:42:37,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:37,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:42:37,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:37,257 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:42:37,258 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:37,258 INFO L87 Difference]: Start difference. First operand 541 states and 730 transitions. Second operand has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 04:42:37,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:37,326 INFO L93 Difference]: Finished difference Result 1147 states and 1576 transitions. [2024-11-28 04:42:37,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:42:37,326 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 199 [2024-11-28 04:42:37,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:37,333 INFO L225 Difference]: With dead ends: 1147 [2024-11-28 04:42:37,333 INFO L226 Difference]: Without dead ends: 851 [2024-11-28 04:42:37,335 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:37,336 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 165 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:37,336 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 537 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:37,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 851 states. [2024-11-28 04:42:37,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 851 to 661. [2024-11-28 04:42:37,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 661 states, 555 states have (on average 1.3693693693693694) internal successors, (760), 560 states have internal predecessors, (760), 68 states have call successors, (68), 37 states have call predecessors, (68), 37 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 04:42:37,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 661 states to 661 states and 896 transitions. [2024-11-28 04:42:37,401 INFO L78 Accepts]: Start accepts. Automaton has 661 states and 896 transitions. Word has length 199 [2024-11-28 04:42:37,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:37,402 INFO L471 AbstractCegarLoop]: Abstraction has 661 states and 896 transitions. [2024-11-28 04:42:37,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.333333333333336) internal successors, (97), 3 states have internal predecessors, (97), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2024-11-28 04:42:37,402 INFO L276 IsEmpty]: Start isEmpty. Operand 661 states and 896 transitions. [2024-11-28 04:42:37,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-28 04:42:37,405 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:37,405 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:37,415 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 04:42:37,605 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:37,606 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:37,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:37,607 INFO L85 PathProgramCache]: Analyzing trace with hash -706079719, now seen corresponding path program 1 times [2024-11-28 04:42:37,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:37,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [969571867] [2024-11-28 04:42:37,607 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:37,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:37,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:37,772 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-11-28 04:42:37,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:37,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [969571867] [2024-11-28 04:42:37,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [969571867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:37,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770358527] [2024-11-28 04:42:37,772 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:37,773 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:37,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:37,775 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:37,778 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 04:42:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:38,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-28 04:42:38,018 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:38,077 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2024-11-28 04:42:38,079 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:38,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770358527] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:38,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:38,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-28 04:42:38,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515328936] [2024-11-28 04:42:38,079 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:38,080 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:42:38,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:38,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:42:38,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:38,081 INFO L87 Difference]: Start difference. First operand 661 states and 896 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:42:38,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:38,159 INFO L93 Difference]: Finished difference Result 1385 states and 1914 transitions. [2024-11-28 04:42:38,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:42:38,160 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 200 [2024-11-28 04:42:38,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:38,166 INFO L225 Difference]: With dead ends: 1385 [2024-11-28 04:42:38,166 INFO L226 Difference]: Without dead ends: 1009 [2024-11-28 04:42:38,168 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:38,168 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 172 mSDsluCounter, 245 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:38,169 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 553 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:38,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1009 states. [2024-11-28 04:42:38,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1009 to 791. [2024-11-28 04:42:38,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 677 states have (on average 1.394387001477105) internal successors, (944), 686 states have internal predecessors, (944), 72 states have call successors, (72), 41 states have call predecessors, (72), 41 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-28 04:42:38,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1088 transitions. [2024-11-28 04:42:38,217 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1088 transitions. Word has length 200 [2024-11-28 04:42:38,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:38,218 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 1088 transitions. [2024-11-28 04:42:38,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:42:38,218 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1088 transitions. [2024-11-28 04:42:38,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2024-11-28 04:42:38,221 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:38,221 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:38,231 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-28 04:42:38,422 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-28 04:42:38,422 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:38,422 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:38,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1344904279, now seen corresponding path program 1 times [2024-11-28 04:42:38,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:38,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205076436] [2024-11-28 04:42:38,423 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:38,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:38,581 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 285 trivial. 0 not checked. [2024-11-28 04:42:38,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:38,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205076436] [2024-11-28 04:42:38,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205076436] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:38,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159013232] [2024-11-28 04:42:38,582 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:38,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:38,582 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:38,584 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:38,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 04:42:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:38,824 INFO L256 TraceCheckSpWp]: Trace formula consists of 798 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:42:38,829 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:38,856 INFO L134 CoverageAnalysis]: Checked inductivity of 291 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 244 trivial. 0 not checked. [2024-11-28 04:42:38,856 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:38,856 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1159013232] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:38,856 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:38,856 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2024-11-28 04:42:38,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099867217] [2024-11-28 04:42:38,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:38,857 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:42:38,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:38,857 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:42:38,858 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:42:38,858 INFO L87 Difference]: Start difference. First operand 791 states and 1088 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:42:38,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:38,918 INFO L93 Difference]: Finished difference Result 1425 states and 1975 transitions. [2024-11-28 04:42:38,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:38,919 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 200 [2024-11-28 04:42:38,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:38,924 INFO L225 Difference]: With dead ends: 1425 [2024-11-28 04:42:38,924 INFO L226 Difference]: Without dead ends: 793 [2024-11-28 04:42:38,926 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:42:38,926 INFO L435 NwaCegarLoop]: 253 mSDtfsCounter, 0 mSDsluCounter, 750 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1003 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:38,926 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1003 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:38,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 793 states. [2024-11-28 04:42:38,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 793 to 791. [2024-11-28 04:42:38,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 677 states have (on average 1.3855243722304285) internal successors, (938), 686 states have internal predecessors, (938), 72 states have call successors, (72), 41 states have call predecessors, (72), 41 states have return successors, (72), 71 states have call predecessors, (72), 72 states have call successors, (72) [2024-11-28 04:42:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1082 transitions. [2024-11-28 04:42:38,973 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1082 transitions. Word has length 200 [2024-11-28 04:42:38,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:38,973 INFO L471 AbstractCegarLoop]: Abstraction has 791 states and 1082 transitions. [2024-11-28 04:42:38,973 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:42:38,973 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1082 transitions. [2024-11-28 04:42:38,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-28 04:42:38,977 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:38,977 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 7, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:38,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-11-28 04:42:39,177 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-11-28 04:42:39,178 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:39,178 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:39,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1201158976, now seen corresponding path program 1 times [2024-11-28 04:42:39,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:39,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668164020] [2024-11-28 04:42:39,178 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:39,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:39,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:39,358 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2024-11-28 04:42:39,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:39,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668164020] [2024-11-28 04:42:39,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668164020] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:39,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1315990017] [2024-11-28 04:42:39,359 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:39,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:39,359 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:39,361 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:39,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-28 04:42:39,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:39,603 INFO L256 TraceCheckSpWp]: Trace formula consists of 790 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:42:39,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:39,667 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 129 proven. 11 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2024-11-28 04:42:39,667 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 109 proven. 0 refuted. 0 times theorem prover too weak. 264 trivial. 0 not checked. [2024-11-28 04:42:39,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1315990017] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:39,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:42:39,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5, 4] total 8 [2024-11-28 04:42:39,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463197910] [2024-11-28 04:42:39,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:39,855 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:39,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:39,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:39,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:42:39,857 INFO L87 Difference]: Start difference. First operand 791 states and 1082 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:42:39,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:39,939 INFO L93 Difference]: Finished difference Result 1447 states and 1999 transitions. [2024-11-28 04:42:39,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:42:39,940 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 207 [2024-11-28 04:42:39,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:39,945 INFO L225 Difference]: With dead ends: 1447 [2024-11-28 04:42:39,945 INFO L226 Difference]: Without dead ends: 782 [2024-11-28 04:42:39,947 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 411 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:42:39,948 INFO L435 NwaCegarLoop]: 247 mSDtfsCounter, 35 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 471 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:39,948 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 471 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:39,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2024-11-28 04:42:39,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 782. [2024-11-28 04:42:39,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 671 states have (on average 1.375558867362146) internal successors, (923), 680 states have internal predecessors, (923), 69 states have call successors, (69), 41 states have call predecessors, (69), 41 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2024-11-28 04:42:39,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1061 transitions. [2024-11-28 04:42:39,995 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1061 transitions. Word has length 207 [2024-11-28 04:42:39,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:39,995 INFO L471 AbstractCegarLoop]: Abstraction has 782 states and 1061 transitions. [2024-11-28 04:42:39,995 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-28 04:42:39,996 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1061 transitions. [2024-11-28 04:42:39,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2024-11-28 04:42:39,999 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:39,999 INFO L218 NwaCegarLoop]: trace histogram [10, 9, 8, 8, 7, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:40,011 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-28 04:42:40,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-28 04:42:40,201 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:40,202 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:40,202 INFO L85 PathProgramCache]: Analyzing trace with hash -360643021, now seen corresponding path program 1 times [2024-11-28 04:42:40,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:40,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707849983] [2024-11-28 04:42:40,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:40,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:40,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:40,398 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 421 trivial. 0 not checked. [2024-11-28 04:42:40,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:40,399 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707849983] [2024-11-28 04:42:40,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707849983] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:40,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1676480421] [2024-11-28 04:42:40,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:40,400 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:40,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:40,402 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:40,406 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-28 04:42:40,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:40,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 868 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 04:42:40,667 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:40,692 INFO L134 CoverageAnalysis]: Checked inductivity of 427 backedges. 136 proven. 0 refuted. 0 times theorem prover too weak. 291 trivial. 0 not checked. [2024-11-28 04:42:40,692 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:40,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1676480421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:40,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:40,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 5 [2024-11-28 04:42:40,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662931225] [2024-11-28 04:42:40,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:40,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:42:40,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:40,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:42:40,694 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:40,694 INFO L87 Difference]: Start difference. First operand 782 states and 1061 transitions. Second operand has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:42:40,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:40,751 INFO L93 Difference]: Finished difference Result 1455 states and 1992 transitions. [2024-11-28 04:42:40,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:40,752 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 231 [2024-11-28 04:42:40,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:40,757 INFO L225 Difference]: With dead ends: 1455 [2024-11-28 04:42:40,757 INFO L226 Difference]: Without dead ends: 782 [2024-11-28 04:42:40,759 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 235 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:40,760 INFO L435 NwaCegarLoop]: 252 mSDtfsCounter, 0 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1000 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:40,760 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1000 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:40,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 782 states. [2024-11-28 04:42:40,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 782 to 782. [2024-11-28 04:42:40,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 782 states, 671 states have (on average 1.3710879284649777) internal successors, (920), 680 states have internal predecessors, (920), 69 states have call successors, (69), 41 states have call predecessors, (69), 41 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2024-11-28 04:42:40,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 782 states to 782 states and 1058 transitions. [2024-11-28 04:42:40,807 INFO L78 Accepts]: Start accepts. Automaton has 782 states and 1058 transitions. Word has length 231 [2024-11-28 04:42:40,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:40,808 INFO L471 AbstractCegarLoop]: Abstraction has 782 states and 1058 transitions. [2024-11-28 04:42:40,808 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:42:40,809 INFO L276 IsEmpty]: Start isEmpty. Operand 782 states and 1058 transitions. [2024-11-28 04:42:40,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2024-11-28 04:42:40,812 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:40,812 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 9, 7, 7, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:40,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-11-28 04:42:41,013 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2024-11-28 04:42:41,013 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:41,014 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:41,014 INFO L85 PathProgramCache]: Analyzing trace with hash 286361644, now seen corresponding path program 1 times [2024-11-28 04:42:41,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:41,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047193783] [2024-11-28 04:42:41,014 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:41,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:41,191 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 83 proven. 73 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-28 04:42:41,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:41,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047193783] [2024-11-28 04:42:41,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047193783] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:41,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643481393] [2024-11-28 04:42:41,192 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:41,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:41,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:41,194 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:41,197 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-28 04:42:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:41,485 INFO L256 TraceCheckSpWp]: Trace formula consists of 861 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:42:41,492 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 260 proven. 9 refuted. 0 times theorem prover too weak. 259 trivial. 0 not checked. [2024-11-28 04:42:41,537 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:41,720 INFO L134 CoverageAnalysis]: Checked inductivity of 528 backedges. 92 proven. 64 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2024-11-28 04:42:41,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643481393] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:41,721 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:42:41,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2024-11-28 04:42:41,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827027710] [2024-11-28 04:42:41,722 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:41,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:42:41,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:41,723 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:42:41,723 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:41,724 INFO L87 Difference]: Start difference. First operand 782 states and 1058 transitions. Second operand has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:42:41,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:41,822 INFO L93 Difference]: Finished difference Result 1493 states and 2035 transitions. [2024-11-28 04:42:41,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:41,822 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 237 [2024-11-28 04:42:41,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:41,827 INFO L225 Difference]: With dead ends: 1493 [2024-11-28 04:42:41,828 INFO L226 Difference]: Without dead ends: 779 [2024-11-28 04:42:41,830 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 478 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:41,831 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 48 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 462 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:41,831 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 462 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:42:41,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-11-28 04:42:41,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 779. [2024-11-28 04:42:41,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 668 states have (on average 1.3682634730538923) internal successors, (914), 677 states have internal predecessors, (914), 69 states have call successors, (69), 41 states have call predecessors, (69), 41 states have return successors, (69), 68 states have call predecessors, (69), 69 states have call successors, (69) [2024-11-28 04:42:41,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1052 transitions. [2024-11-28 04:42:41,882 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1052 transitions. Word has length 237 [2024-11-28 04:42:41,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:41,885 INFO L471 AbstractCegarLoop]: Abstraction has 779 states and 1052 transitions. [2024-11-28 04:42:41,885 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.2) internal successors, (131), 5 states have internal predecessors, (131), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:42:41,885 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1052 transitions. [2024-11-28 04:42:41,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2024-11-28 04:42:41,890 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:41,890 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:41,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-28 04:42:42,090 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-11-28 04:42:42,091 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:42,092 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:42,092 INFO L85 PathProgramCache]: Analyzing trace with hash 875038169, now seen corresponding path program 1 times [2024-11-28 04:42:42,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:42,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885447184] [2024-11-28 04:42:42,093 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:42,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:42,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:42,482 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2024-11-28 04:42:42,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:42,483 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885447184] [2024-11-28 04:42:42,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885447184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:42,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:42,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:42:42,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295101035] [2024-11-28 04:42:42,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:42,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:42:42,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:42,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:42:42,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:42:42,485 INFO L87 Difference]: Start difference. First operand 779 states and 1052 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:42:42,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:42,547 INFO L93 Difference]: Finished difference Result 1263 states and 1729 transitions. [2024-11-28 04:42:42,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:42:42,548 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 264 [2024-11-28 04:42:42,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:42,553 INFO L225 Difference]: With dead ends: 1263 [2024-11-28 04:42:42,553 INFO L226 Difference]: Without dead ends: 754 [2024-11-28 04:42:42,555 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 [2024-11-28 04:42:42,555 INFO L435 NwaCegarLoop]: 250 mSDtfsCounter, 0 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:42,556 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 493 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:42,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 754 states. [2024-11-28 04:42:42,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 754 to 754. [2024-11-28 04:42:42,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 754 states, 644 states have (on average 1.3493788819875776) internal successors, (869), 652 states have internal predecessors, (869), 69 states have call successors, (69), 41 states have call predecessors, (69), 40 states have return successors, (68), 67 states have call predecessors, (68), 68 states have call successors, (68) [2024-11-28 04:42:42,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 754 states to 754 states and 1006 transitions. [2024-11-28 04:42:42,601 INFO L78 Accepts]: Start accepts. Automaton has 754 states and 1006 transitions. Word has length 264 [2024-11-28 04:42:42,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:42,602 INFO L471 AbstractCegarLoop]: Abstraction has 754 states and 1006 transitions. [2024-11-28 04:42:42,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2024-11-28 04:42:42,602 INFO L276 IsEmpty]: Start isEmpty. Operand 754 states and 1006 transitions. [2024-11-28 04:42:42,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2024-11-28 04:42:42,606 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:42,606 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:42,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-11-28 04:42:42,606 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:42,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:42,607 INFO L85 PathProgramCache]: Analyzing trace with hash 1698741409, now seen corresponding path program 1 times [2024-11-28 04:42:42,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:42,607 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122802391] [2024-11-28 04:42:42,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:42,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:42,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:43,186 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 639 trivial. 0 not checked. [2024-11-28 04:42:43,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:43,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122802391] [2024-11-28 04:42:43,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122802391] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:43,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:43,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:42:43,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746357932] [2024-11-28 04:42:43,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:43,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:42:43,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:43,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:42:43,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:43,189 INFO L87 Difference]: Start difference. First operand 754 states and 1006 transitions. Second operand has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:42:43,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:43,314 INFO L93 Difference]: Finished difference Result 1085 states and 1517 transitions. [2024-11-28 04:42:43,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:42:43,315 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 265 [2024-11-28 04:42:43,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:43,322 INFO L225 Difference]: With dead ends: 1085 [2024-11-28 04:42:43,322 INFO L226 Difference]: Without dead ends: 1083 [2024-11-28 04:42:43,323 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 [2024-11-28 04:42:43,326 INFO L435 NwaCegarLoop]: 390 mSDtfsCounter, 123 mSDsluCounter, 1417 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:43,326 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 1807 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:42:43,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2024-11-28 04:42:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 760. [2024-11-28 04:42:43,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 760 states, 648 states have (on average 1.3472222222222223) internal successors, (873), 657 states have internal predecessors, (873), 70 states have call successors, (70), 42 states have call predecessors, (70), 41 states have return successors, (69), 67 states have call predecessors, (69), 69 states have call successors, (69) [2024-11-28 04:42:43,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 760 states to 760 states and 1012 transitions. [2024-11-28 04:42:43,385 INFO L78 Accepts]: Start accepts. Automaton has 760 states and 1012 transitions. Word has length 265 [2024-11-28 04:42:43,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:43,386 INFO L471 AbstractCegarLoop]: Abstraction has 760 states and 1012 transitions. [2024-11-28 04:42:43,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 17.8) internal successors, (89), 5 states have internal predecessors, (89), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2024-11-28 04:42:43,386 INFO L276 IsEmpty]: Start isEmpty. Operand 760 states and 1012 transitions. [2024-11-28 04:42:43,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-28 04:42:43,390 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:43,390 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:43,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-28 04:42:43,391 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:43,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:43,391 INFO L85 PathProgramCache]: Analyzing trace with hash 903219750, now seen corresponding path program 1 times [2024-11-28 04:42:43,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:43,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942631856] [2024-11-28 04:42:43,395 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:43,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:43,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:43,843 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 142 proven. 27 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-11-28 04:42:43,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:43,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942631856] [2024-11-28 04:42:43,844 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942631856] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:43,844 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744058084] [2024-11-28 04:42:43,844 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:43,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:43,844 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:43,846 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:43,852 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-28 04:42:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:44,135 INFO L256 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 04:42:44,142 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:44,394 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 251 proven. 33 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2024-11-28 04:42:44,395 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:42:44,894 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 146 proven. 23 refuted. 0 times theorem prover too weak. 515 trivial. 0 not checked. [2024-11-28 04:42:44,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744058084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:42:44,894 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:42:44,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 18 [2024-11-28 04:42:44,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134199135] [2024-11-28 04:42:44,895 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:42:44,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 04:42:44,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:44,898 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 04:42:44,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=257, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:42:44,898 INFO L87 Difference]: Start difference. First operand 760 states and 1012 transitions. Second operand has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 5 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-28 04:42:45,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:45,658 INFO L93 Difference]: Finished difference Result 1821 states and 2502 transitions. [2024-11-28 04:42:45,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:42:45,660 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 5 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) Word has length 273 [2024-11-28 04:42:45,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:45,668 INFO L225 Difference]: With dead ends: 1821 [2024-11-28 04:42:45,668 INFO L226 Difference]: Without dead ends: 1352 [2024-11-28 04:42:45,670 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 565 GetRequests, 537 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=545, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:42:45,674 INFO L435 NwaCegarLoop]: 354 mSDtfsCounter, 301 mSDsluCounter, 3741 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 4095 SdHoareTripleChecker+Invalid, 376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:45,674 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 4095 Invalid, 376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:42:45,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1352 states. [2024-11-28 04:42:45,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1352 to 1066. [2024-11-28 04:42:45,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1066 states, 914 states have (on average 1.3479212253829322) internal successors, (1232), 924 states have internal predecessors, (1232), 94 states have call successors, (94), 55 states have call predecessors, (94), 57 states have return successors, (98), 93 states have call predecessors, (98), 93 states have call successors, (98) [2024-11-28 04:42:45,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1424 transitions. [2024-11-28 04:42:45,746 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1424 transitions. Word has length 273 [2024-11-28 04:42:45,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:45,747 INFO L471 AbstractCegarLoop]: Abstraction has 1066 states and 1424 transitions. [2024-11-28 04:42:45,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 8.11111111111111) internal successors, (146), 14 states have internal predecessors, (146), 5 states have call successors, (25), 4 states have call predecessors, (25), 9 states have return successors, (27), 8 states have call predecessors, (27), 5 states have call successors, (27) [2024-11-28 04:42:45,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1424 transitions. [2024-11-28 04:42:45,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2024-11-28 04:42:45,750 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:45,750 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:45,760 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-28 04:42:45,950 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:45,951 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:45,951 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:45,951 INFO L85 PathProgramCache]: Analyzing trace with hash 1864833767, now seen corresponding path program 1 times [2024-11-28 04:42:45,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:45,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783967386] [2024-11-28 04:42:45,951 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:45,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2024-11-28 04:42:46,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:46,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783967386] [2024-11-28 04:42:46,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783967386] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:46,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641238926] [2024-11-28 04:42:46,106 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:46,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:46,107 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:46,109 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:46,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-28 04:42:46,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:46,408 INFO L256 TraceCheckSpWp]: Trace formula consists of 968 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:42:46,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:46,435 INFO L134 CoverageAnalysis]: Checked inductivity of 684 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 607 trivial. 0 not checked. [2024-11-28 04:42:46,435 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:46,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641238926] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:46,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:46,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 04:42:46,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130794032] [2024-11-28 04:42:46,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:46,437 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:46,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:46,438 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:46,438 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:46,439 INFO L87 Difference]: Start difference. First operand 1066 states and 1424 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:42:46,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:46,560 INFO L93 Difference]: Finished difference Result 1995 states and 2712 transitions. [2024-11-28 04:42:46,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:46,561 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 273 [2024-11-28 04:42:46,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:46,567 INFO L225 Difference]: With dead ends: 1995 [2024-11-28 04:42:46,567 INFO L226 Difference]: Without dead ends: 1050 [2024-11-28 04:42:46,571 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:46,571 INFO L435 NwaCegarLoop]: 235 mSDtfsCounter, 4 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:46,572 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 684 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:42:46,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1050 states. [2024-11-28 04:42:46,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1050 to 1050. [2024-11-28 04:42:46,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1050 states, 903 states have (on average 1.3377630121816169) internal successors, (1208), 913 states have internal predecessors, (1208), 90 states have call successors, (90), 55 states have call predecessors, (90), 56 states have return successors, (93), 88 states have call predecessors, (93), 89 states have call successors, (93) [2024-11-28 04:42:46,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1050 states to 1050 states and 1391 transitions. [2024-11-28 04:42:46,648 INFO L78 Accepts]: Start accepts. Automaton has 1050 states and 1391 transitions. Word has length 273 [2024-11-28 04:42:46,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:46,652 INFO L471 AbstractCegarLoop]: Abstraction has 1050 states and 1391 transitions. [2024-11-28 04:42:46,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2024-11-28 04:42:46,652 INFO L276 IsEmpty]: Start isEmpty. Operand 1050 states and 1391 transitions. [2024-11-28 04:42:46,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 277 [2024-11-28 04:42:46,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:46,656 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 9, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:46,666 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2024-11-28 04:42:46,856 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2024-11-28 04:42:46,857 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:46,857 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:46,857 INFO L85 PathProgramCache]: Analyzing trace with hash 82715142, now seen corresponding path program 1 times [2024-11-28 04:42:46,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:46,857 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260101579] [2024-11-28 04:42:46,858 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:46,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:46,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:47,001 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 121 proven. 19 refuted. 0 times theorem prover too weak. 550 trivial. 0 not checked. [2024-11-28 04:42:47,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:47,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260101579] [2024-11-28 04:42:47,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260101579] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:47,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164257632] [2024-11-28 04:42:47,002 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:47,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:47,003 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:47,005 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:47,008 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-28 04:42:47,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:47,302 INFO L256 TraceCheckSpWp]: Trace formula consists of 969 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-28 04:42:47,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:47,334 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 222 proven. 0 refuted. 0 times theorem prover too weak. 468 trivial. 0 not checked. [2024-11-28 04:42:47,335 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:47,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164257632] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:47,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:47,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2024-11-28 04:42:47,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11080036] [2024-11-28 04:42:47,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:47,336 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:47,336 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:47,337 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:47,337 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:47,337 INFO L87 Difference]: Start difference. First operand 1050 states and 1391 transitions. Second operand has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:42:47,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:47,482 INFO L93 Difference]: Finished difference Result 1814 states and 2439 transitions. [2024-11-28 04:42:47,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:47,483 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 276 [2024-11-28 04:42:47,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:47,488 INFO L225 Difference]: With dead ends: 1814 [2024-11-28 04:42:47,489 INFO L226 Difference]: Without dead ends: 876 [2024-11-28 04:42:47,490 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 277 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:42:47,491 INFO L435 NwaCegarLoop]: 246 mSDtfsCounter, 4 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 712 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:47,491 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 712 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:42:47,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2024-11-28 04:42:47,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 876. [2024-11-28 04:42:47,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 876 states, 747 states have (on average 1.322623828647925) internal successors, (988), 757 states have internal predecessors, (988), 81 states have call successors, (81), 48 states have call predecessors, (81), 47 states have return successors, (80), 77 states have call predecessors, (80), 80 states have call successors, (80) [2024-11-28 04:42:47,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 876 states to 876 states and 1149 transitions. [2024-11-28 04:42:47,554 INFO L78 Accepts]: Start accepts. Automaton has 876 states and 1149 transitions. Word has length 276 [2024-11-28 04:42:47,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:47,555 INFO L471 AbstractCegarLoop]: Abstraction has 876 states and 1149 transitions. [2024-11-28 04:42:47,555 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.0) internal successors, (108), 4 states have internal predecessors, (108), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2024-11-28 04:42:47,555 INFO L276 IsEmpty]: Start isEmpty. Operand 876 states and 1149 transitions. [2024-11-28 04:42:47,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-28 04:42:47,557 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:47,557 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:47,569 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2024-11-28 04:42:47,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-11-28 04:42:47,758 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:47,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:47,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1612582383, now seen corresponding path program 1 times [2024-11-28 04:42:47,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:47,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968702157] [2024-11-28 04:42:47,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:47,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:50,155 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 24 proven. 144 refuted. 0 times theorem prover too weak. 561 trivial. 0 not checked. [2024-11-28 04:42:50,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:50,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968702157] [2024-11-28 04:42:50,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968702157] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:50,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [870516262] [2024-11-28 04:42:50,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:50,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:50,156 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:50,158 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:50,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-28 04:42:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:50,456 INFO L256 TraceCheckSpWp]: Trace formula consists of 1016 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:42:50,462 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:50,792 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 148 proven. 0 refuted. 0 times theorem prover too weak. 581 trivial. 0 not checked. [2024-11-28 04:42:50,793 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:50,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [870516262] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:50,793 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:50,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [18] total 26 [2024-11-28 04:42:50,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070663515] [2024-11-28 04:42:50,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:50,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:42:50,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:50,795 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:42:50,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:42:50,796 INFO L87 Difference]: Start difference. First operand 876 states and 1149 transitions. Second operand has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 04:42:51,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:51,743 INFO L93 Difference]: Finished difference Result 2487 states and 3218 transitions. [2024-11-28 04:42:51,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:42:51,744 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 288 [2024-11-28 04:42:51,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:51,755 INFO L225 Difference]: With dead ends: 2487 [2024-11-28 04:42:51,755 INFO L226 Difference]: Without dead ends: 1899 [2024-11-28 04:42:51,758 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 256 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=129, Invalid=1353, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 04:42:51,758 INFO L435 NwaCegarLoop]: 358 mSDtfsCounter, 638 mSDsluCounter, 2297 mSDsCounter, 0 mSdLazyCounter, 609 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 643 SdHoareTripleChecker+Valid, 2655 SdHoareTripleChecker+Invalid, 673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 609 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:51,758 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [643 Valid, 2655 Invalid, 673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 609 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:42:51,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1899 states. [2024-11-28 04:42:51,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1899 to 1530. [2024-11-28 04:42:51,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1287 states have (on average 1.275058275058275) internal successors, (1641), 1303 states have internal predecessors, (1641), 160 states have call successors, (160), 83 states have call predecessors, (160), 82 states have return successors, (159), 150 states have call predecessors, (159), 159 states have call successors, (159) [2024-11-28 04:42:51,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 1960 transitions. [2024-11-28 04:42:51,879 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 1960 transitions. Word has length 288 [2024-11-28 04:42:51,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:51,880 INFO L471 AbstractCegarLoop]: Abstraction has 1530 states and 1960 transitions. [2024-11-28 04:42:51,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.7) internal successors, (107), 9 states have internal predecessors, (107), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 04:42:51,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 1960 transitions. [2024-11-28 04:42:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2024-11-28 04:42:51,883 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:51,883 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 8, 8, 8, 7, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:51,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-11-28 04:42:52,087 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-11-28 04:42:52,087 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:52,088 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:52,088 INFO L85 PathProgramCache]: Analyzing trace with hash -327995931, now seen corresponding path program 1 times [2024-11-28 04:42:52,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:52,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744904801] [2024-11-28 04:42:52,088 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:52,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:52,381 INFO L134 CoverageAnalysis]: Checked inductivity of 729 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 729 trivial. 0 not checked. [2024-11-28 04:42:52,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:52,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744904801] [2024-11-28 04:42:52,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744904801] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:52,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:52,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:42:52,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686433647] [2024-11-28 04:42:52,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:52,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:52,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:52,383 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:52,383 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:52,383 INFO L87 Difference]: Start difference. First operand 1530 states and 1960 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 04:42:52,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:52,603 INFO L93 Difference]: Finished difference Result 3236 states and 4151 transitions. [2024-11-28 04:42:52,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:52,604 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 289 [2024-11-28 04:42:52,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:52,613 INFO L225 Difference]: With dead ends: 3236 [2024-11-28 04:42:52,614 INFO L226 Difference]: Without dead ends: 1980 [2024-11-28 04:42:52,616 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 [2024-11-28 04:42:52,617 INFO L435 NwaCegarLoop]: 308 mSDtfsCounter, 307 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:52,617 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 684 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:42:52,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1980 states. [2024-11-28 04:42:52,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1980 to 1635. [2024-11-28 04:42:52,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1635 states, 1370 states have (on average 1.2635036496350365) internal successors, (1731), 1387 states have internal predecessors, (1731), 177 states have call successors, (177), 88 states have call predecessors, (177), 87 states have return successors, (176), 166 states have call predecessors, (176), 176 states have call successors, (176) [2024-11-28 04:42:52,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1635 states to 1635 states and 2084 transitions. [2024-11-28 04:42:52,746 INFO L78 Accepts]: Start accepts. Automaton has 1635 states and 2084 transitions. Word has length 289 [2024-11-28 04:42:52,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:52,747 INFO L471 AbstractCegarLoop]: Abstraction has 1635 states and 2084 transitions. [2024-11-28 04:42:52,747 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 04:42:52,747 INFO L276 IsEmpty]: Start isEmpty. Operand 1635 states and 2084 transitions. [2024-11-28 04:42:52,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-28 04:42:52,749 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:52,750 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:52,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-11-28 04:42:52,750 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:52,750 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:52,751 INFO L85 PathProgramCache]: Analyzing trace with hash 940115532, now seen corresponding path program 1 times [2024-11-28 04:42:52,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:52,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174801203] [2024-11-28 04:42:52,751 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:52,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:52,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:53,000 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-11-28 04:42:53,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:53,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174801203] [2024-11-28 04:42:53,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174801203] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:53,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:53,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:42:53,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1722456789] [2024-11-28 04:42:53,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:53,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:42:53,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:53,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:42:53,002 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:53,002 INFO L87 Difference]: Start difference. First operand 1635 states and 2084 transitions. Second operand has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 5 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 04:42:53,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:53,181 INFO L93 Difference]: Finished difference Result 3086 states and 4039 transitions. [2024-11-28 04:42:53,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:42:53,181 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 5 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) Word has length 294 [2024-11-28 04:42:53,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:53,191 INFO L225 Difference]: With dead ends: 3086 [2024-11-28 04:42:53,191 INFO L226 Difference]: Without dead ends: 1806 [2024-11-28 04:42:53,194 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:42:53,194 INFO L435 NwaCegarLoop]: 265 mSDtfsCounter, 41 mSDsluCounter, 500 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:53,194 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 765 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:42:53,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1806 states. [2024-11-28 04:42:53,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1806 to 1755. [2024-11-28 04:42:53,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1755 states, 1463 states have (on average 1.277511961722488) internal successors, (1869), 1480 states have internal predecessors, (1869), 204 states have call successors, (204), 88 states have call predecessors, (204), 87 states have return successors, (203), 193 states have call predecessors, (203), 203 states have call successors, (203) [2024-11-28 04:42:53,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1755 states to 1755 states and 2276 transitions. [2024-11-28 04:42:53,337 INFO L78 Accepts]: Start accepts. Automaton has 1755 states and 2276 transitions. Word has length 294 [2024-11-28 04:42:53,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:53,337 INFO L471 AbstractCegarLoop]: Abstraction has 1755 states and 2276 transitions. [2024-11-28 04:42:53,339 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.333333333333332) internal successors, (98), 6 states have internal predecessors, (98), 5 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 4 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 04:42:53,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1755 states and 2276 transitions. [2024-11-28 04:42:53,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-28 04:42:53,341 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:53,342 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:53,342 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-11-28 04:42:53,342 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:53,342 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:53,343 INFO L85 PathProgramCache]: Analyzing trace with hash -890299448, now seen corresponding path program 1 times [2024-11-28 04:42:53,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:53,343 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761386119] [2024-11-28 04:42:53,343 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:53,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:53,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:54,067 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2024-11-28 04:42:54,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:54,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761386119] [2024-11-28 04:42:54,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761386119] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:54,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540444697] [2024-11-28 04:42:54,068 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:54,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:54,068 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:54,070 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:54,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-28 04:42:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:54,405 INFO L256 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:42:54,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:54,642 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 181 proven. 0 refuted. 0 times theorem prover too weak. 589 trivial. 0 not checked. [2024-11-28 04:42:54,642 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:54,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540444697] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:54,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:54,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2024-11-28 04:42:54,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10771169] [2024-11-28 04:42:54,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:54,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:42:54,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:54,643 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:42:54,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2024-11-28 04:42:54,644 INFO L87 Difference]: Start difference. First operand 1755 states and 2276 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 04:42:55,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:55,138 INFO L93 Difference]: Finished difference Result 3690 states and 4805 transitions. [2024-11-28 04:42:55,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:42:55,139 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 294 [2024-11-28 04:42:55,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:55,153 INFO L225 Difference]: With dead ends: 3690 [2024-11-28 04:42:55,153 INFO L226 Difference]: Without dead ends: 2297 [2024-11-28 04:42:55,157 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 291 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:42:55,158 INFO L435 NwaCegarLoop]: 319 mSDtfsCounter, 123 mSDsluCounter, 1537 mSDsCounter, 0 mSdLazyCounter, 368 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 1856 SdHoareTripleChecker+Invalid, 370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:55,158 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 1856 Invalid, 370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 368 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:42:55,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2297 states. [2024-11-28 04:42:55,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2297 to 1987. [2024-11-28 04:42:55,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1987 states, 1658 states have (on average 1.2689987937273823) internal successors, (2104), 1677 states have internal predecessors, (2104), 231 states have call successors, (231), 98 states have call predecessors, (231), 97 states have return successors, (230), 218 states have call predecessors, (230), 230 states have call successors, (230) [2024-11-28 04:42:55,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1987 states to 1987 states and 2565 transitions. [2024-11-28 04:42:55,307 INFO L78 Accepts]: Start accepts. Automaton has 1987 states and 2565 transitions. Word has length 294 [2024-11-28 04:42:55,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:55,308 INFO L471 AbstractCegarLoop]: Abstraction has 1987 states and 2565 transitions. [2024-11-28 04:42:55,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2024-11-28 04:42:55,308 INFO L276 IsEmpty]: Start isEmpty. Operand 1987 states and 2565 transitions. [2024-11-28 04:42:55,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-28 04:42:55,311 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:55,311 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:55,324 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-11-28 04:42:55,516 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-11-28 04:42:55,516 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:55,517 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:55,517 INFO L85 PathProgramCache]: Analyzing trace with hash -214966328, now seen corresponding path program 1 times [2024-11-28 04:42:55,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:55,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219577599] [2024-11-28 04:42:55,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:55,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:55,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:56,588 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 760 trivial. 0 not checked. [2024-11-28 04:42:56,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:56,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219577599] [2024-11-28 04:42:56,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219577599] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:42:56,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062685824] [2024-11-28 04:42:56,589 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:56,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:42:56,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:42:56,592 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:42:56,596 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-28 04:42:56,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:56,894 INFO L256 TraceCheckSpWp]: Trace formula consists of 1027 conjuncts, 23 conjuncts are in the unsatisfiable core [2024-11-28 04:42:56,900 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:42:57,055 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 187 proven. 0 refuted. 0 times theorem prover too weak. 583 trivial. 0 not checked. [2024-11-28 04:42:57,055 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:42:57,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062685824] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:57,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:42:57,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [12] total 13 [2024-11-28 04:42:57,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543565975] [2024-11-28 04:42:57,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:57,056 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:42:57,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:57,057 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:42:57,057 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:42:57,057 INFO L87 Difference]: Start difference. First operand 1987 states and 2565 transitions. Second operand has 10 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 04:42:57,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:57,976 INFO L93 Difference]: Finished difference Result 3983 states and 5146 transitions. [2024-11-28 04:42:57,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:42:57,977 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 294 [2024-11-28 04:42:57,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:57,994 INFO L225 Difference]: With dead ends: 3983 [2024-11-28 04:42:57,995 INFO L226 Difference]: Without dead ends: 2425 [2024-11-28 04:42:58,002 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2024-11-28 04:42:58,005 INFO L435 NwaCegarLoop]: 371 mSDtfsCounter, 612 mSDsluCounter, 2414 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 2785 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:58,005 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [618 Valid, 2785 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:42:58,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2024-11-28 04:42:58,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 1948. [2024-11-28 04:42:58,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1948 states, 1631 states have (on average 1.2624156958920907) internal successors, (2059), 1650 states have internal predecessors, (2059), 219 states have call successors, (219), 98 states have call predecessors, (219), 97 states have return successors, (218), 206 states have call predecessors, (218), 218 states have call successors, (218) [2024-11-28 04:42:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2496 transitions. [2024-11-28 04:42:58,163 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2496 transitions. Word has length 294 [2024-11-28 04:42:58,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:58,164 INFO L471 AbstractCegarLoop]: Abstraction has 1948 states and 2496 transitions. [2024-11-28 04:42:58,164 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.3) internal successors, (113), 9 states have internal predecessors, (113), 4 states have call successors, (18), 4 states have call predecessors, (18), 5 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2024-11-28 04:42:58,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2496 transitions. [2024-11-28 04:42:58,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2024-11-28 04:42:58,167 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:58,167 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 8, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2024-11-28 04:42:58,180 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-28 04:42:58,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-11-28 04:42:58,371 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:58,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:58,372 INFO L85 PathProgramCache]: Analyzing trace with hash 63640710, now seen corresponding path program 1 times [2024-11-28 04:42:58,372 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:58,372 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555763514] [2024-11-28 04:42:58,372 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:58,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:58,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:58,607 INFO L134 CoverageAnalysis]: Checked inductivity of 770 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 770 trivial. 0 not checked. [2024-11-28 04:42:58,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:58,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555763514] [2024-11-28 04:42:58,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555763514] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:58,608 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:58,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:42:58,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94330310] [2024-11-28 04:42:58,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:58,609 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:58,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:58,609 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:58,610 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:58,610 INFO L87 Difference]: Start difference. First operand 1948 states and 2496 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 04:42:58,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:58,896 INFO L93 Difference]: Finished difference Result 3664 states and 4733 transitions. [2024-11-28 04:42:58,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:58,897 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 294 [2024-11-28 04:42:58,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:58,911 INFO L225 Difference]: With dead ends: 3664 [2024-11-28 04:42:58,912 INFO L226 Difference]: Without dead ends: 2089 [2024-11-28 04:42:58,915 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 [2024-11-28 04:42:58,916 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 246 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:58,916 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 689 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:42:58,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2089 states. [2024-11-28 04:42:59,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2089 to 1843. [2024-11-28 04:42:59,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1843 states, 1541 states have (on average 1.2628163530175212) internal successors, (1946), 1559 states have internal predecessors, (1946), 209 states have call successors, (209), 93 states have call predecessors, (209), 92 states have return successors, (208), 197 states have call predecessors, (208), 208 states have call successors, (208) [2024-11-28 04:42:59,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1843 states to 1843 states and 2363 transitions. [2024-11-28 04:42:59,048 INFO L78 Accepts]: Start accepts. Automaton has 1843 states and 2363 transitions. Word has length 294 [2024-11-28 04:42:59,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:59,049 INFO L471 AbstractCegarLoop]: Abstraction has 1843 states and 2363 transitions. [2024-11-28 04:42:59,049 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 3 states have call successors, (18), 2 states have call predecessors, (18), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2024-11-28 04:42:59,049 INFO L276 IsEmpty]: Start isEmpty. Operand 1843 states and 2363 transitions. [2024-11-28 04:42:59,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 304 [2024-11-28 04:42:59,051 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:59,052 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 10, 10, 9, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:42:59,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-11-28 04:42:59,053 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:59,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:59,054 INFO L85 PathProgramCache]: Analyzing trace with hash 579938176, now seen corresponding path program 1 times [2024-11-28 04:42:59,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:59,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974609019] [2024-11-28 04:42:59,055 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:59,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:59,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:42:59,228 INFO L134 CoverageAnalysis]: Checked inductivity of 707 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 705 trivial. 0 not checked. [2024-11-28 04:42:59,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:42:59,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974609019] [2024-11-28 04:42:59,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974609019] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:42:59,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:42:59,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:42:59,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749416907] [2024-11-28 04:42:59,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:42:59,230 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:42:59,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:42:59,231 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:42:59,231 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:42:59,231 INFO L87 Difference]: Start difference. First operand 1843 states and 2363 transitions. Second operand has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 04:42:59,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:42:59,632 INFO L93 Difference]: Finished difference Result 3383 states and 4367 transitions. [2024-11-28 04:42:59,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:42:59,633 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) Word has length 303 [2024-11-28 04:42:59,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:42:59,645 INFO L225 Difference]: With dead ends: 3383 [2024-11-28 04:42:59,645 INFO L226 Difference]: Without dead ends: 1905 [2024-11-28 04:42:59,648 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 [2024-11-28 04:42:59,649 INFO L435 NwaCegarLoop]: 379 mSDtfsCounter, 433 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 131 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 433 SdHoareTripleChecker+Valid, 898 SdHoareTripleChecker+Invalid, 211 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 131 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:42:59,649 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [433 Valid, 898 Invalid, 211 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 131 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:42:59,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1905 states. [2024-11-28 04:42:59,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1905 to 1664. [2024-11-28 04:42:59,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1664 states, 1399 states have (on average 1.243745532523231) internal successors, (1740), 1409 states have internal predecessors, (1740), 184 states have call successors, (184), 80 states have call predecessors, (184), 80 states have return successors, (184), 174 states have call predecessors, (184), 184 states have call successors, (184) [2024-11-28 04:42:59,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1664 states to 1664 states and 2108 transitions. [2024-11-28 04:42:59,760 INFO L78 Accepts]: Start accepts. Automaton has 1664 states and 2108 transitions. Word has length 303 [2024-11-28 04:42:59,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:42:59,761 INFO L471 AbstractCegarLoop]: Abstraction has 1664 states and 2108 transitions. [2024-11-28 04:42:59,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.0) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 1 states have return successors, (15), 1 states have call predecessors, (15), 1 states have call successors, (15) [2024-11-28 04:42:59,761 INFO L276 IsEmpty]: Start isEmpty. Operand 1664 states and 2108 transitions. [2024-11-28 04:42:59,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-11-28 04:42:59,765 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:42:59,765 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:42:59,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-11-28 04:42:59,766 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:42:59,766 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:42:59,766 INFO L85 PathProgramCache]: Analyzing trace with hash -310316906, now seen corresponding path program 1 times [2024-11-28 04:42:59,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:42:59,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885216199] [2024-11-28 04:42:59,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:42:59,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:42:59,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:00,666 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 16 proven. 16 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2024-11-28 04:43:00,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:00,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885216199] [2024-11-28 04:43:00,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885216199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:00,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672791661] [2024-11-28 04:43:00,667 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:00,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:00,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:00,670 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:00,675 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-28 04:43:01,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:01,086 INFO L256 TraceCheckSpWp]: Trace formula consists of 1307 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-28 04:43:01,098 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:02,157 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 226 proven. 65 refuted. 0 times theorem prover too weak. 586 trivial. 0 not checked. [2024-11-28 04:43:02,157 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:03,030 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 14 proven. 18 refuted. 0 times theorem prover too weak. 845 trivial. 0 not checked. [2024-11-28 04:43:03,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672791661] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:03,030 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:03,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 8, 12] total 22 [2024-11-28 04:43:03,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808177339] [2024-11-28 04:43:03,031 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:03,032 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-28 04:43:03,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:03,032 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-28 04:43:03,033 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:43:03,033 INFO L87 Difference]: Start difference. First operand 1664 states and 2108 transitions. Second operand has 22 states, 21 states have (on average 12.952380952380953) internal successors, (272), 21 states have internal predecessors, (272), 13 states have call successors, (51), 7 states have call predecessors, (51), 6 states have return successors, (49), 12 states have call predecessors, (49), 12 states have call successors, (49) [2024-11-28 04:43:08,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:08,628 INFO L93 Difference]: Finished difference Result 10221 states and 13749 transitions. [2024-11-28 04:43:08,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 92 states. [2024-11-28 04:43:08,629 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 12.952380952380953) internal successors, (272), 21 states have internal predecessors, (272), 13 states have call successors, (51), 7 states have call predecessors, (51), 6 states have return successors, (49), 12 states have call predecessors, (49), 12 states have call successors, (49) Word has length 344 [2024-11-28 04:43:08,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:08,665 INFO L225 Difference]: With dead ends: 10221 [2024-11-28 04:43:08,665 INFO L226 Difference]: Without dead ends: 8930 [2024-11-28 04:43:08,672 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 805 GetRequests, 697 SyntacticMatches, 1 SemanticMatches, 107 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3992 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=1776, Invalid=9996, Unknown=0, NotChecked=0, Total=11772 [2024-11-28 04:43:08,673 INFO L435 NwaCegarLoop]: 482 mSDtfsCounter, 6525 mSDsluCounter, 4411 mSDsCounter, 0 mSdLazyCounter, 1699 mSolverCounterSat, 1439 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6525 SdHoareTripleChecker+Valid, 4893 SdHoareTripleChecker+Invalid, 3138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1439 IncrementalHoareTripleChecker+Valid, 1699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:08,673 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6525 Valid, 4893 Invalid, 3138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1439 Valid, 1699 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-11-28 04:43:08,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8930 states. [2024-11-28 04:43:09,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8930 to 3108. [2024-11-28 04:43:09,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3108 states, 2600 states have (on average 1.2665384615384616) internal successors, (3293), 2620 states have internal predecessors, (3293), 354 states have call successors, (354), 153 states have call predecessors, (354), 153 states have return successors, (354), 334 states have call predecessors, (354), 354 states have call successors, (354) [2024-11-28 04:43:09,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3108 states to 3108 states and 4001 transitions. [2024-11-28 04:43:09,073 INFO L78 Accepts]: Start accepts. Automaton has 3108 states and 4001 transitions. Word has length 344 [2024-11-28 04:43:09,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:09,074 INFO L471 AbstractCegarLoop]: Abstraction has 3108 states and 4001 transitions. [2024-11-28 04:43:09,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 12.952380952380953) internal successors, (272), 21 states have internal predecessors, (272), 13 states have call successors, (51), 7 states have call predecessors, (51), 6 states have return successors, (49), 12 states have call predecessors, (49), 12 states have call successors, (49) [2024-11-28 04:43:09,075 INFO L276 IsEmpty]: Start isEmpty. Operand 3108 states and 4001 transitions. [2024-11-28 04:43:09,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 345 [2024-11-28 04:43:09,083 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:09,083 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:43:09,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-11-28 04:43:09,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:09,287 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:09,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:09,288 INFO L85 PathProgramCache]: Analyzing trace with hash -663405288, now seen corresponding path program 1 times [2024-11-28 04:43:09,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:09,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164993012] [2024-11-28 04:43:09,288 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:09,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:09,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:09,699 INFO L134 CoverageAnalysis]: Checked inductivity of 877 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 849 trivial. 0 not checked. [2024-11-28 04:43:09,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:09,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164993012] [2024-11-28 04:43:09,699 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164993012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:09,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:09,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:43:09,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129769832] [2024-11-28 04:43:09,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:09,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:43:09,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:09,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:43:09,701 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:43:09,701 INFO L87 Difference]: Start difference. First operand 3108 states and 4001 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 04:43:10,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:10,398 INFO L93 Difference]: Finished difference Result 6326 states and 8175 transitions. [2024-11-28 04:43:10,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:43:10,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) Word has length 344 [2024-11-28 04:43:10,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:10,417 INFO L225 Difference]: With dead ends: 6326 [2024-11-28 04:43:10,417 INFO L226 Difference]: Without dead ends: 3730 [2024-11-28 04:43:10,423 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:43:10,424 INFO L435 NwaCegarLoop]: 383 mSDtfsCounter, 156 mSDsluCounter, 1863 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:10,424 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 2246 Invalid, 422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:43:10,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3730 states. [2024-11-28 04:43:10,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3730 to 3004. [2024-11-28 04:43:10,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3004 states, 2526 states have (on average 1.2553444180522566) internal successors, (3171), 2548 states have internal predecessors, (3171), 326 states have call successors, (326), 151 states have call predecessors, (326), 151 states have return successors, (326), 304 states have call predecessors, (326), 326 states have call successors, (326) [2024-11-28 04:43:10,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3004 states to 3004 states and 3823 transitions. [2024-11-28 04:43:10,796 INFO L78 Accepts]: Start accepts. Automaton has 3004 states and 3823 transitions. Word has length 344 [2024-11-28 04:43:10,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:10,797 INFO L471 AbstractCegarLoop]: Abstraction has 3004 states and 3823 transitions. [2024-11-28 04:43:10,797 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 4 states have call predecessors, (19), 3 states have call successors, (19) [2024-11-28 04:43:10,797 INFO L276 IsEmpty]: Start isEmpty. Operand 3004 states and 3823 transitions. [2024-11-28 04:43:10,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-28 04:43:10,804 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:10,805 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:43:10,805 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-28 04:43:10,805 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:10,806 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:10,806 INFO L85 PathProgramCache]: Analyzing trace with hash 1074985956, now seen corresponding path program 1 times [2024-11-28 04:43:10,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:10,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011431480] [2024-11-28 04:43:10,806 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:10,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:12,316 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2024-11-28 04:43:12,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:12,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011431480] [2024-11-28 04:43:12,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011431480] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:12,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:12,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:43:12,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660183672] [2024-11-28 04:43:12,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:12,318 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:43:12,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:12,321 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:43:12,321 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:43:12,322 INFO L87 Difference]: Start difference. First operand 3004 states and 3823 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 6 states have internal predecessors, (111), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 04:43:12,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:12,829 INFO L93 Difference]: Finished difference Result 6246 states and 7975 transitions. [2024-11-28 04:43:12,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:43:12,830 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 6 states have internal predecessors, (111), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) Word has length 345 [2024-11-28 04:43:12,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:12,844 INFO L225 Difference]: With dead ends: 6246 [2024-11-28 04:43:12,844 INFO L226 Difference]: Without dead ends: 3754 [2024-11-28 04:43:12,848 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:43:12,852 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 78 mSDsluCounter, 1454 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:12,853 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1718 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:43:12,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3754 states. [2024-11-28 04:43:13,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3754 to 3344. [2024-11-28 04:43:13,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3344 states, 2782 states have (on average 1.2534148094895758) internal successors, (3487), 2810 states have internal predecessors, (3487), 364 states have call successors, (364), 175 states have call predecessors, (364), 197 states have return successors, (392), 358 states have call predecessors, (392), 364 states have call successors, (392) [2024-11-28 04:43:13,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3344 states to 3344 states and 4243 transitions. [2024-11-28 04:43:13,270 INFO L78 Accepts]: Start accepts. Automaton has 3344 states and 4243 transitions. Word has length 345 [2024-11-28 04:43:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:13,271 INFO L471 AbstractCegarLoop]: Abstraction has 3344 states and 4243 transitions. [2024-11-28 04:43:13,271 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 6 states have internal predecessors, (111), 3 states have call successors, (19), 2 states have call predecessors, (19), 2 states have return successors, (19), 4 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 04:43:13,271 INFO L276 IsEmpty]: Start isEmpty. Operand 3344 states and 4243 transitions. [2024-11-28 04:43:13,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 346 [2024-11-28 04:43:13,288 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:13,288 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 12, 12, 9, 7, 7, 7, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:43:13,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-28 04:43:13,289 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:13,291 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:13,295 INFO L85 PathProgramCache]: Analyzing trace with hash 878472451, now seen corresponding path program 1 times [2024-11-28 04:43:13,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:13,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150925528] [2024-11-28 04:43:13,295 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:13,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:13,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:13,653 INFO L134 CoverageAnalysis]: Checked inductivity of 874 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 830 trivial. 0 not checked. [2024-11-28 04:43:13,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:13,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150925528] [2024-11-28 04:43:13,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150925528] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:43:13,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:43:13,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:43:13,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572014667] [2024-11-28 04:43:13,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:43:13,655 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:43:13,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:13,655 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:43:13,656 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:43:13,656 INFO L87 Difference]: Start difference. First operand 3344 states and 4243 transitions. Second operand has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-28 04:43:14,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:14,091 INFO L93 Difference]: Finished difference Result 6737 states and 8535 transitions. [2024-11-28 04:43:14,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:43:14,092 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 345 [2024-11-28 04:43:14,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:14,104 INFO L225 Difference]: With dead ends: 6737 [2024-11-28 04:43:14,104 INFO L226 Difference]: Without dead ends: 3256 [2024-11-28 04:43:14,109 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 [2024-11-28 04:43:14,110 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 26 mSDsluCounter, 431 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:14,110 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 658 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:43:14,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3256 states. [2024-11-28 04:43:14,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3256 to 3256. [2024-11-28 04:43:14,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3256 states, 2716 states have (on average 1.223858615611193) internal successors, (3324), 2744 states have internal predecessors, (3324), 364 states have call successors, (364), 175 states have call predecessors, (364), 175 states have return successors, (364), 336 states have call predecessors, (364), 364 states have call successors, (364) [2024-11-28 04:43:14,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3256 states to 3256 states and 4052 transitions. [2024-11-28 04:43:14,561 INFO L78 Accepts]: Start accepts. Automaton has 3256 states and 4052 transitions. Word has length 345 [2024-11-28 04:43:14,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:14,562 INFO L471 AbstractCegarLoop]: Abstraction has 3256 states and 4052 transitions. [2024-11-28 04:43:14,562 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.75) internal successors, (111), 4 states have internal predecessors, (111), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2024-11-28 04:43:14,562 INFO L276 IsEmpty]: Start isEmpty. Operand 3256 states and 4052 transitions. [2024-11-28 04:43:14,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2024-11-28 04:43:14,572 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:14,573 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:43:14,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-11-28 04:43:14,573 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:14,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:14,574 INFO L85 PathProgramCache]: Analyzing trace with hash -14518423, now seen corresponding path program 1 times [2024-11-28 04:43:14,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:14,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955720032] [2024-11-28 04:43:14,574 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:14,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:16,647 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 24 proven. 17 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2024-11-28 04:43:16,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:16,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955720032] [2024-11-28 04:43:16,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955720032] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:16,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710900865] [2024-11-28 04:43:16,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:16,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:16,649 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:16,651 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:16,662 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-28 04:43:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:17,031 INFO L256 TraceCheckSpWp]: Trace formula consists of 1332 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-11-28 04:43:17,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:18,021 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 275 proven. 63 refuted. 0 times theorem prover too weak. 593 trivial. 0 not checked. [2024-11-28 04:43:18,022 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:19,038 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2024-11-28 04:43:19,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710900865] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:19,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:19,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 9, 13] total 36 [2024-11-28 04:43:19,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175666419] [2024-11-28 04:43:19,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:19,040 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-28 04:43:19,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:19,042 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-28 04:43:19,042 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=126, Invalid=1134, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:43:19,043 INFO L87 Difference]: Start difference. First operand 3256 states and 4052 transitions. Second operand has 36 states, 35 states have (on average 9.2) internal successors, (322), 34 states have internal predecessors, (322), 16 states have call successors, (62), 7 states have call predecessors, (62), 7 states have return successors, (60), 16 states have call predecessors, (60), 15 states have call successors, (60) [2024-11-28 04:43:39,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:43:39,315 INFO L93 Difference]: Finished difference Result 27590 states and 36396 transitions. [2024-11-28 04:43:39,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 183 states. [2024-11-28 04:43:39,316 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 9.2) internal successors, (322), 34 states have internal predecessors, (322), 16 states have call successors, (62), 7 states have call predecessors, (62), 7 states have return successors, (60), 16 states have call predecessors, (60), 15 states have call successors, (60) Word has length 355 [2024-11-28 04:43:39,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:43:39,425 INFO L225 Difference]: With dead ends: 27590 [2024-11-28 04:43:39,426 INFO L226 Difference]: Without dead ends: 24882 [2024-11-28 04:43:39,449 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 942 GetRequests, 730 SyntacticMatches, 0 SemanticMatches, 212 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16254 ImplicationChecksByTransitivity, 9.6s TimeCoverageRelationStatistics Valid=4694, Invalid=40888, Unknown=0, NotChecked=0, Total=45582 [2024-11-28 04:43:39,450 INFO L435 NwaCegarLoop]: 991 mSDtfsCounter, 4032 mSDsluCounter, 18060 mSDsCounter, 0 mSdLazyCounter, 8770 mSolverCounterSat, 1032 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4032 SdHoareTripleChecker+Valid, 19051 SdHoareTripleChecker+Invalid, 9802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1032 IncrementalHoareTripleChecker+Valid, 8770 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:43:39,451 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4032 Valid, 19051 Invalid, 9802 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1032 Valid, 8770 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2024-11-28 04:43:39,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24882 states. [2024-11-28 04:43:40,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24882 to 6269. [2024-11-28 04:43:40,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6269 states, 5205 states have (on average 1.2428434197886646) internal successors, (6469), 5261 states have internal predecessors, (6469), 717 states have call successors, (717), 346 states have call predecessors, (717), 346 states have return successors, (717), 661 states have call predecessors, (717), 717 states have call successors, (717) [2024-11-28 04:43:40,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6269 states to 6269 states and 7903 transitions. [2024-11-28 04:43:40,628 INFO L78 Accepts]: Start accepts. Automaton has 6269 states and 7903 transitions. Word has length 355 [2024-11-28 04:43:40,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:43:40,629 INFO L471 AbstractCegarLoop]: Abstraction has 6269 states and 7903 transitions. [2024-11-28 04:43:40,629 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 9.2) internal successors, (322), 34 states have internal predecessors, (322), 16 states have call successors, (62), 7 states have call predecessors, (62), 7 states have return successors, (60), 16 states have call predecessors, (60), 15 states have call successors, (60) [2024-11-28 04:43:40,629 INFO L276 IsEmpty]: Start isEmpty. Operand 6269 states and 7903 transitions. [2024-11-28 04:43:40,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-28 04:43:40,645 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:43:40,646 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:43:40,659 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-11-28 04:43:40,850 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable44 [2024-11-28 04:43:40,850 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:43:40,850 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:43:40,851 INFO L85 PathProgramCache]: Analyzing trace with hash 805317834, now seen corresponding path program 1 times [2024-11-28 04:43:40,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:43:40,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604039891] [2024-11-28 04:43:40,851 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:40,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:43:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:42,517 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2024-11-28 04:43:42,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:43:42,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604039891] [2024-11-28 04:43:42,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604039891] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:43:42,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [440076172] [2024-11-28 04:43:42,518 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:43:42,518 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:43:42,518 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:43:42,523 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:43:42,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-11-28 04:43:42,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:43:42,934 INFO L256 TraceCheckSpWp]: Trace formula consists of 1333 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 04:43:42,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:43:44,193 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 248 proven. 93 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2024-11-28 04:43:44,193 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:43:45,359 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 14 proven. 27 refuted. 0 times theorem prover too weak. 890 trivial. 0 not checked. [2024-11-28 04:43:45,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [440076172] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:43:45,359 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:43:45,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 18] total 39 [2024-11-28 04:43:45,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567172508] [2024-11-28 04:43:45,360 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:43:45,361 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 04:43:45,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:43:45,362 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 04:43:45,363 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=1329, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 04:43:45,363 INFO L87 Difference]: Start difference. First operand 6269 states and 7903 transitions. Second operand has 39 states, 38 states have (on average 9.026315789473685) internal successors, (343), 36 states have internal predecessors, (343), 14 states have call successors, (62), 7 states have call predecessors, (62), 9 states have return successors, (61), 15 states have call predecessors, (61), 13 states have call successors, (61) [2024-11-28 04:44:39,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:39,251 INFO L93 Difference]: Finished difference Result 129921 states and 173990 transitions. [2024-11-28 04:44:39,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 614 states. [2024-11-28 04:44:39,251 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 9.026315789473685) internal successors, (343), 36 states have internal predecessors, (343), 14 states have call successors, (62), 7 states have call predecessors, (62), 9 states have return successors, (61), 15 states have call predecessors, (61), 13 states have call successors, (61) Word has length 356 [2024-11-28 04:44:39,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:40,032 INFO L225 Difference]: With dead ends: 129921 [2024-11-28 04:44:40,032 INFO L226 Difference]: Without dead ends: 124458 [2024-11-28 04:44:40,113 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1380 GetRequests, 734 SyntacticMatches, 0 SemanticMatches, 646 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192217 ImplicationChecksByTransitivity, 26.0s TimeCoverageRelationStatistics Valid=23272, Invalid=395984, Unknown=0, NotChecked=0, Total=419256 [2024-11-28 04:44:40,114 INFO L435 NwaCegarLoop]: 1039 mSDtfsCounter, 13792 mSDsluCounter, 17434 mSDsCounter, 0 mSdLazyCounter, 11574 mSolverCounterSat, 4030 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13800 SdHoareTripleChecker+Valid, 18473 SdHoareTripleChecker+Invalid, 15604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4030 IncrementalHoareTripleChecker+Valid, 11574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:40,114 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13800 Valid, 18473 Invalid, 15604 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4030 Valid, 11574 Invalid, 0 Unknown, 0 Unchecked, 11.6s Time] [2024-11-28 04:44:40,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124458 states. [2024-11-28 04:44:44,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124458 to 13979. [2024-11-28 04:44:44,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13979 states, 11351 states have (on average 1.2358382521363755) internal successors, (14028), 11494 states have internal predecessors, (14028), 1791 states have call successors, (1791), 836 states have call predecessors, (1791), 836 states have return successors, (1791), 1648 states have call predecessors, (1791), 1791 states have call successors, (1791) [2024-11-28 04:44:44,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13979 states to 13979 states and 17610 transitions. [2024-11-28 04:44:44,906 INFO L78 Accepts]: Start accepts. Automaton has 13979 states and 17610 transitions. Word has length 356 [2024-11-28 04:44:44,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:44,907 INFO L471 AbstractCegarLoop]: Abstraction has 13979 states and 17610 transitions. [2024-11-28 04:44:44,907 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 9.026315789473685) internal successors, (343), 36 states have internal predecessors, (343), 14 states have call successors, (62), 7 states have call predecessors, (62), 9 states have return successors, (61), 15 states have call predecessors, (61), 13 states have call successors, (61) [2024-11-28 04:44:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 13979 states and 17610 transitions. [2024-11-28 04:44:44,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-28 04:44:44,937 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:44,937 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:44:44,952 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Ended with exit code 0 [2024-11-28 04:44:45,138 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:44:45,139 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:45,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:45,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1276478711, now seen corresponding path program 1 times [2024-11-28 04:44:45,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:45,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1213334947] [2024-11-28 04:44:45,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:45,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:45,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:45,592 INFO L134 CoverageAnalysis]: Checked inductivity of 930 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 902 trivial. 0 not checked. [2024-11-28 04:44:45,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:45,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1213334947] [2024-11-28 04:44:45,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1213334947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:45,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:44:45,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:44:45,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873005388] [2024-11-28 04:44:45,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:45,594 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:44:45,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:45,595 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:44:45,595 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:44:45,595 INFO L87 Difference]: Start difference. First operand 13979 states and 17610 transitions. Second operand has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-28 04:44:50,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:50,387 INFO L93 Difference]: Finished difference Result 31609 states and 40029 transitions. [2024-11-28 04:44:50,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:44:50,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) Word has length 356 [2024-11-28 04:44:50,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:50,458 INFO L225 Difference]: With dead ends: 31609 [2024-11-28 04:44:50,458 INFO L226 Difference]: Without dead ends: 18869 [2024-11-28 04:44:50,480 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2024-11-28 04:44:50,481 INFO L435 NwaCegarLoop]: 475 mSDtfsCounter, 285 mSDsluCounter, 2520 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 291 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 862 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:50,481 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [291 Valid, 2995 Invalid, 862 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:44:50,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18869 states. [2024-11-28 04:44:53,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18869 to 12881. [2024-11-28 04:44:53,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12881 states, 10523 states have (on average 1.2372897462700752) internal successors, (13020), 10648 states have internal predecessors, (13020), 1611 states have call successors, (1611), 746 states have call predecessors, (1611), 746 states have return successors, (1611), 1486 states have call predecessors, (1611), 1611 states have call successors, (1611) [2024-11-28 04:44:53,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12881 states to 12881 states and 16242 transitions. [2024-11-28 04:44:53,233 INFO L78 Accepts]: Start accepts. Automaton has 12881 states and 16242 transitions. Word has length 356 [2024-11-28 04:44:53,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:53,234 INFO L471 AbstractCegarLoop]: Abstraction has 12881 states and 16242 transitions. [2024-11-28 04:44:53,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 13.666666666666666) internal successors, (123), 8 states have internal predecessors, (123), 3 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 4 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-28 04:44:53,234 INFO L276 IsEmpty]: Start isEmpty. Operand 12881 states and 16242 transitions. [2024-11-28 04:44:53,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 357 [2024-11-28 04:44:53,264 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:53,264 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:44:53,265 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-28 04:44:53,265 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:53,265 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:53,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1622769460, now seen corresponding path program 1 times [2024-11-28 04:44:53,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:53,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2093360249] [2024-11-28 04:44:53,266 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:53,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:53,737 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 926 trivial. 0 not checked. [2024-11-28 04:44:53,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:53,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2093360249] [2024-11-28 04:44:53,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2093360249] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:53,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:44:53,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:44:53,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120877475] [2024-11-28 04:44:53,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:53,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:44:53,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:53,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:44:53,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:44:53,740 INFO L87 Difference]: Start difference. First operand 12881 states and 16242 transitions. Second operand has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 04:44:56,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:44:56,434 INFO L93 Difference]: Finished difference Result 23731 states and 29955 transitions. [2024-11-28 04:44:56,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:44:56,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) Word has length 356 [2024-11-28 04:44:56,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:44:56,482 INFO L225 Difference]: With dead ends: 23731 [2024-11-28 04:44:56,482 INFO L226 Difference]: Without dead ends: 11553 [2024-11-28 04:44:56,504 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 [2024-11-28 04:44:56,504 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 0 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:44:56,504 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 479 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:44:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11553 states. [2024-11-28 04:44:58,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11553 to 11553. [2024-11-28 04:44:58,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11553 states, 9275 states have (on average 1.2252291105121293) internal successors, (11364), 9400 states have internal predecessors, (11364), 1571 states have call successors, (1571), 706 states have call predecessors, (1571), 706 states have return successors, (1571), 1446 states have call predecessors, (1571), 1571 states have call successors, (1571) [2024-11-28 04:44:58,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11553 states to 11553 states and 14506 transitions. [2024-11-28 04:44:58,532 INFO L78 Accepts]: Start accepts. Automaton has 11553 states and 14506 transitions. Word has length 356 [2024-11-28 04:44:58,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:44:58,532 INFO L471 AbstractCegarLoop]: Abstraction has 11553 states and 14506 transitions. [2024-11-28 04:44:58,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.333333333333336) internal successors, (109), 3 states have internal predecessors, (109), 2 states have call successors, (20), 2 states have call predecessors, (20), 1 states have return successors, (19), 2 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-28 04:44:58,532 INFO L276 IsEmpty]: Start isEmpty. Operand 11553 states and 14506 transitions. [2024-11-28 04:44:58,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2024-11-28 04:44:58,549 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:44:58,549 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:44:58,550 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-11-28 04:44:58,550 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:44:58,550 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:44:58,550 INFO L85 PathProgramCache]: Analyzing trace with hash 885472400, now seen corresponding path program 1 times [2024-11-28 04:44:58,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:44:58,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552591270] [2024-11-28 04:44:58,551 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:44:58,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:44:58,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:44:58,912 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 922 trivial. 0 not checked. [2024-11-28 04:44:58,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:44:58,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552591270] [2024-11-28 04:44:58,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552591270] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:44:58,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:44:58,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:44:58,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085774126] [2024-11-28 04:44:58,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:44:58,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:44:58,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:44:58,915 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:44:58,915 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:44:58,915 INFO L87 Difference]: Start difference. First operand 11553 states and 14506 transitions. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:45:00,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:00,995 INFO L93 Difference]: Finished difference Result 20636 states and 25953 transitions. [2024-11-28 04:45:00,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:45:00,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 357 [2024-11-28 04:45:00,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:01,024 INFO L225 Difference]: With dead ends: 20636 [2024-11-28 04:45:01,024 INFO L226 Difference]: Without dead ends: 9707 [2024-11-28 04:45:01,037 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 [2024-11-28 04:45:01,037 INFO L435 NwaCegarLoop]: 242 mSDtfsCounter, 0 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 477 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:01,038 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 477 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:01,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9707 states. [2024-11-28 04:45:02,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9707 to 9707. [2024-11-28 04:45:02,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9707 states, 7699 states have (on average 1.2157423041953501) internal successors, (9360), 7811 states have internal predecessors, (9360), 1391 states have call successors, (1391), 616 states have call predecessors, (1391), 616 states have return successors, (1391), 1279 states have call predecessors, (1391), 1391 states have call successors, (1391) [2024-11-28 04:45:02,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9707 states to 9707 states and 12142 transitions. [2024-11-28 04:45:02,632 INFO L78 Accepts]: Start accepts. Automaton has 9707 states and 12142 transitions. Word has length 357 [2024-11-28 04:45:02,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:02,633 INFO L471 AbstractCegarLoop]: Abstraction has 9707 states and 12142 transitions. [2024-11-28 04:45:02,633 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 2 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-11-28 04:45:02,633 INFO L276 IsEmpty]: Start isEmpty. Operand 9707 states and 12142 transitions. [2024-11-28 04:45:02,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 359 [2024-11-28 04:45:02,647 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:02,647 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 7, 7, 7, 7, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:02,647 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-11-28 04:45:02,648 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:02,648 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:02,648 INFO L85 PathProgramCache]: Analyzing trace with hash -117412015, now seen corresponding path program 1 times [2024-11-28 04:45:02,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:02,648 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069385935] [2024-11-28 04:45:02,648 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:02,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:03,025 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 919 trivial. 0 not checked. [2024-11-28 04:45:03,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:03,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069385935] [2024-11-28 04:45:03,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069385935] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:03,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:03,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:45:03,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055247518] [2024-11-28 04:45:03,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:03,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:45:03,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:03,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:45:03,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:45:03,027 INFO L87 Difference]: Start difference. First operand 9707 states and 12142 transitions. Second operand has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:45:04,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:04,360 INFO L93 Difference]: Finished difference Result 16652 states and 20880 transitions. [2024-11-28 04:45:04,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:45:04,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 358 [2024-11-28 04:45:04,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:04,389 INFO L225 Difference]: With dead ends: 16652 [2024-11-28 04:45:04,390 INFO L226 Difference]: Without dead ends: 7524 [2024-11-28 04:45:04,403 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 [2024-11-28 04:45:04,404 INFO L435 NwaCegarLoop]: 225 mSDtfsCounter, 0 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:04,404 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 443 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:45:04,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7524 states. [2024-11-28 04:45:06,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7524 to 7524. [2024-11-28 04:45:06,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7524 states, 5998 states have (on average 1.2140713571190396) internal successors, (7282), 6083 states have internal predecessors, (7282), 1049 states have call successors, (1049), 476 states have call predecessors, (1049), 476 states have return successors, (1049), 964 states have call predecessors, (1049), 1049 states have call successors, (1049) [2024-11-28 04:45:06,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7524 states to 7524 states and 9380 transitions. [2024-11-28 04:45:06,233 INFO L78 Accepts]: Start accepts. Automaton has 7524 states and 9380 transitions. Word has length 358 [2024-11-28 04:45:06,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:06,234 INFO L471 AbstractCegarLoop]: Abstraction has 7524 states and 9380 transitions. [2024-11-28 04:45:06,234 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.0) internal successors, (117), 3 states have internal predecessors, (117), 2 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:45:06,234 INFO L276 IsEmpty]: Start isEmpty. Operand 7524 states and 9380 transitions. [2024-11-28 04:45:06,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-28 04:45:06,247 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:06,248 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 9, 8, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:45:06,248 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-11-28 04:45:06,248 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:06,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:06,249 INFO L85 PathProgramCache]: Analyzing trace with hash 645212080, now seen corresponding path program 1 times [2024-11-28 04:45:06,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:06,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583187707] [2024-11-28 04:45:06,249 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:06,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:06,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:06,648 INFO L134 CoverageAnalysis]: Checked inductivity of 946 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 909 trivial. 0 not checked. [2024-11-28 04:45:06,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:06,649 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583187707] [2024-11-28 04:45:06,649 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583187707] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:06,649 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:06,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:45:06,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652121984] [2024-11-28 04:45:06,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:06,650 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:45:06,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:06,651 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:45:06,651 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:45:06,651 INFO L87 Difference]: Start difference. First operand 7524 states and 9380 transitions. Second operand has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:45:08,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:08,988 INFO L93 Difference]: Finished difference Result 15181 states and 18974 transitions. [2024-11-28 04:45:08,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:45:08,988 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 361 [2024-11-28 04:45:08,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:09,014 INFO L225 Difference]: With dead ends: 15181 [2024-11-28 04:45:09,014 INFO L226 Difference]: Without dead ends: 8522 [2024-11-28 04:45:09,025 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:45:09,025 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 117 mSDsluCounter, 1385 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 1671 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:09,026 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 1671 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:45:09,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8522 states. [2024-11-28 04:45:11,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8522 to 7727. [2024-11-28 04:45:11,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7727 states, 6145 states have (on average 1.213506916192026) internal successors, (7457), 6230 states have internal predecessors, (7457), 1091 states have call successors, (1091), 490 states have call predecessors, (1091), 490 states have return successors, (1091), 1006 states have call predecessors, (1091), 1091 states have call successors, (1091) [2024-11-28 04:45:11,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7727 states to 7727 states and 9639 transitions. [2024-11-28 04:45:11,099 INFO L78 Accepts]: Start accepts. Automaton has 7727 states and 9639 transitions. Word has length 361 [2024-11-28 04:45:11,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:11,100 INFO L471 AbstractCegarLoop]: Abstraction has 7727 states and 9639 transitions. [2024-11-28 04:45:11,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.25) internal successors, (122), 7 states have internal predecessors, (122), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:45:11,100 INFO L276 IsEmpty]: Start isEmpty. Operand 7727 states and 9639 transitions. [2024-11-28 04:45:11,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 362 [2024-11-28 04:45:11,136 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:11,136 INFO L218 NwaCegarLoop]: trace histogram [12, 12, 11, 11, 10, 10, 10, 9, 8, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:45:11,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-11-28 04:45:11,137 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:11,141 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:11,141 INFO L85 PathProgramCache]: Analyzing trace with hash -960437341, now seen corresponding path program 1 times [2024-11-28 04:45:11,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:11,142 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071505133] [2024-11-28 04:45:11,142 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:11,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:11,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:11,590 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 908 trivial. 0 not checked. [2024-11-28 04:45:11,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:11,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071505133] [2024-11-28 04:45:11,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071505133] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:11,591 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580548424] [2024-11-28 04:45:11,591 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:11,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:11,591 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:11,594 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:11,597 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-11-28 04:45:12,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:12,064 INFO L256 TraceCheckSpWp]: Trace formula consists of 1356 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:45:12,091 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 127 proven. 205 refuted. 0 times theorem prover too weak. 613 trivial. 0 not checked. [2024-11-28 04:45:12,869 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:13,398 INFO L134 CoverageAnalysis]: Checked inductivity of 945 backedges. 17 proven. 32 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2024-11-28 04:45:13,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580548424] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:13,399 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:13,399 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 12] total 19 [2024-11-28 04:45:13,399 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649102810] [2024-11-28 04:45:13,399 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:13,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2024-11-28 04:45:13,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:13,402 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2024-11-28 04:45:13,402 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:45:13,402 INFO L87 Difference]: Start difference. First operand 7727 states and 9639 transitions. Second operand has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 17 states have internal predecessors, (274), 7 states have call successors, (65), 6 states have call predecessors, (65), 9 states have return successors, (64), 9 states have call predecessors, (64), 7 states have call successors, (64) [2024-11-28 04:45:19,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:19,898 INFO L93 Difference]: Finished difference Result 24021 states and 30007 transitions. [2024-11-28 04:45:19,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-28 04:45:19,899 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 17 states have internal predecessors, (274), 7 states have call successors, (65), 6 states have call predecessors, (65), 9 states have return successors, (64), 9 states have call predecessors, (64), 7 states have call successors, (64) Word has length 361 [2024-11-28 04:45:19,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:19,962 INFO L225 Difference]: With dead ends: 24021 [2024-11-28 04:45:19,963 INFO L226 Difference]: Without dead ends: 17159 [2024-11-28 04:45:19,978 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 779 GetRequests, 712 SyntacticMatches, 9 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=362, Invalid=3178, Unknown=0, NotChecked=0, Total=3540 [2024-11-28 04:45:19,979 INFO L435 NwaCegarLoop]: 568 mSDtfsCounter, 1001 mSDsluCounter, 7169 mSDsCounter, 0 mSdLazyCounter, 1713 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 7737 SdHoareTripleChecker+Invalid, 1918 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:19,980 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 7737 Invalid, 1918 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1713 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 04:45:19,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17159 states. [2024-11-28 04:45:23,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17159 to 13964. [2024-11-28 04:45:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13964 states, 11148 states have (on average 1.208557588805167) internal successors, (13473), 11290 states have internal predecessors, (13473), 1928 states have call successors, (1928), 887 states have call predecessors, (1928), 887 states have return successors, (1928), 1786 states have call predecessors, (1928), 1928 states have call successors, (1928) [2024-11-28 04:45:23,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13964 states to 13964 states and 17329 transitions. [2024-11-28 04:45:23,915 INFO L78 Accepts]: Start accepts. Automaton has 13964 states and 17329 transitions. Word has length 361 [2024-11-28 04:45:23,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:23,915 INFO L471 AbstractCegarLoop]: Abstraction has 13964 states and 17329 transitions. [2024-11-28 04:45:23,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 14.421052631578947) internal successors, (274), 17 states have internal predecessors, (274), 7 states have call successors, (65), 6 states have call predecessors, (65), 9 states have return successors, (64), 9 states have call predecessors, (64), 7 states have call successors, (64) [2024-11-28 04:45:23,915 INFO L276 IsEmpty]: Start isEmpty. Operand 13964 states and 17329 transitions. [2024-11-28 04:45:23,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 366 [2024-11-28 04:45:23,930 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:23,931 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-28 04:45:23,948 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2024-11-28 04:45:24,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable51 [2024-11-28 04:45:24,132 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:24,132 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:24,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1701997546, now seen corresponding path program 1 times [2024-11-28 04:45:24,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:24,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151944355] [2024-11-28 04:45:24,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:24,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:24,557 INFO L134 CoverageAnalysis]: Checked inductivity of 971 backedges. 26 proven. 2 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2024-11-28 04:45:24,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:24,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151944355] [2024-11-28 04:45:24,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151944355] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:24,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439654459] [2024-11-28 04:45:24,558 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:24,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:24,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:24,569 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:24,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-11-28 04:45:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:25,096 INFO L256 TraceCheckSpWp]: Trace formula consists of 1364 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-28 04:45:25,117 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:25,839 INFO L134 CoverageAnalysis]: Checked inductivity of 971 backedges. 327 proven. 60 refuted. 0 times theorem prover too weak. 584 trivial. 0 not checked. [2024-11-28 04:45:25,840 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:45:27,077 INFO L134 CoverageAnalysis]: Checked inductivity of 971 backedges. 58 proven. 52 refuted. 0 times theorem prover too weak. 861 trivial. 0 not checked. [2024-11-28 04:45:27,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439654459] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:45:27,077 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:45:27,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 14, 14] total 33 [2024-11-28 04:45:27,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912864706] [2024-11-28 04:45:27,078 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:45:27,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-11-28 04:45:27,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:27,080 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-11-28 04:45:27,081 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=98, Invalid=958, Unknown=0, NotChecked=0, Total=1056 [2024-11-28 04:45:27,081 INFO L87 Difference]: Start difference. First operand 13964 states and 17329 transitions. Second operand has 33 states, 33 states have (on average 8.696969696969697) internal successors, (287), 28 states have internal predecessors, (287), 7 states have call successors, (49), 8 states have call predecessors, (49), 15 states have return successors, (50), 12 states have call predecessors, (50), 7 states have call successors, (50) [2024-11-28 04:45:52,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:45:52,406 INFO L93 Difference]: Finished difference Result 40017 states and 49128 transitions. [2024-11-28 04:45:52,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 235 states. [2024-11-28 04:45:52,407 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 8.696969696969697) internal successors, (287), 28 states have internal predecessors, (287), 7 states have call successors, (49), 8 states have call predecessors, (49), 15 states have return successors, (50), 12 states have call predecessors, (50), 7 states have call successors, (50) Word has length 365 [2024-11-28 04:45:52,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:45:52,483 INFO L225 Difference]: With dead ends: 40017 [2024-11-28 04:45:52,483 INFO L226 Difference]: Without dead ends: 29627 [2024-11-28 04:45:52,506 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1018 GetRequests, 759 SyntacticMatches, 0 SemanticMatches, 259 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26014 ImplicationChecksByTransitivity, 9.9s TimeCoverageRelationStatistics Valid=6124, Invalid=61736, Unknown=0, NotChecked=0, Total=67860 [2024-11-28 04:45:52,507 INFO L435 NwaCegarLoop]: 596 mSDtfsCounter, 3568 mSDsluCounter, 10276 mSDsCounter, 0 mSdLazyCounter, 7621 mSolverCounterSat, 1199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3570 SdHoareTripleChecker+Valid, 10872 SdHoareTripleChecker+Invalid, 8820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1199 IncrementalHoareTripleChecker+Valid, 7621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2024-11-28 04:45:52,507 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3570 Valid, 10872 Invalid, 8820 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1199 Valid, 7621 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2024-11-28 04:45:52,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29627 states. [2024-11-28 04:45:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29627 to 14691. [2024-11-28 04:45:56,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14691 states, 11819 states have (on average 1.1907098739318047) internal successors, (14073), 11955 states have internal predecessors, (14073), 1895 states have call successors, (1895), 976 states have call predecessors, (1895), 976 states have return successors, (1895), 1759 states have call predecessors, (1895), 1895 states have call successors, (1895) [2024-11-28 04:45:56,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14691 states to 14691 states and 17863 transitions. [2024-11-28 04:45:56,913 INFO L78 Accepts]: Start accepts. Automaton has 14691 states and 17863 transitions. Word has length 365 [2024-11-28 04:45:56,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:45:56,914 INFO L471 AbstractCegarLoop]: Abstraction has 14691 states and 17863 transitions. [2024-11-28 04:45:56,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 8.696969696969697) internal successors, (287), 28 states have internal predecessors, (287), 7 states have call successors, (49), 8 states have call predecessors, (49), 15 states have return successors, (50), 12 states have call predecessors, (50), 7 states have call successors, (50) [2024-11-28 04:45:56,915 INFO L276 IsEmpty]: Start isEmpty. Operand 14691 states and 17863 transitions. [2024-11-28 04:45:56,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 369 [2024-11-28 04:45:56,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:45:56,927 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-11-28 04:45:56,936 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2024-11-28 04:45:57,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-28 04:45:57,128 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:45:57,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:57,129 INFO L85 PathProgramCache]: Analyzing trace with hash -572926366, now seen corresponding path program 1 times [2024-11-28 04:45:57,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:57,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17755895] [2024-11-28 04:45:57,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:57,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:57,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:58,762 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 73 proven. 28 refuted. 0 times theorem prover too weak. 866 trivial. 0 not checked. [2024-11-28 04:45:58,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:58,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17755895] [2024-11-28 04:45:58,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17755895] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:45:58,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617860558] [2024-11-28 04:45:58,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:58,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:45:58,763 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:58,765 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:45:58,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-11-28 04:45:59,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:59,193 INFO L256 TraceCheckSpWp]: Trace formula consists of 1368 conjuncts, 38 conjuncts are in the unsatisfiable core [2024-11-28 04:45:59,202 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:45:59,734 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 304 proven. 72 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2024-11-28 04:45:59,734 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:00,795 INFO L134 CoverageAnalysis]: Checked inductivity of 967 backedges. 32 proven. 70 refuted. 0 times theorem prover too weak. 865 trivial. 0 not checked. [2024-11-28 04:46:00,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617860558] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:00,796 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:00,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 14] total 35 [2024-11-28 04:46:00,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712033760] [2024-11-28 04:46:00,796 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:00,797 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-28 04:46:00,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:00,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-28 04:46:00,799 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=1085, Unknown=0, NotChecked=0, Total=1190 [2024-11-28 04:46:00,799 INFO L87 Difference]: Start difference. First operand 14691 states and 17863 transitions. Second operand has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 29 states have internal predecessors, (317), 8 states have call successors, (52), 9 states have call predecessors, (52), 17 states have return successors, (53), 14 states have call predecessors, (53), 8 states have call successors, (53) [2024-11-28 04:46:31,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:31,058 INFO L93 Difference]: Finished difference Result 45186 states and 53689 transitions. [2024-11-28 04:46:31,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 245 states. [2024-11-28 04:46:31,059 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 29 states have internal predecessors, (317), 8 states have call successors, (52), 9 states have call predecessors, (52), 17 states have return successors, (53), 14 states have call predecessors, (53), 8 states have call successors, (53) Word has length 368 [2024-11-28 04:46:31,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:31,158 INFO L225 Difference]: With dead ends: 45186 [2024-11-28 04:46:31,159 INFO L226 Difference]: Without dead ends: 33891 [2024-11-28 04:46:31,188 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1057 GetRequests, 784 SyntacticMatches, 0 SemanticMatches, 273 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28865 ImplicationChecksByTransitivity, 11.9s TimeCoverageRelationStatistics Valid=7839, Invalid=67511, Unknown=0, NotChecked=0, Total=75350 [2024-11-28 04:46:31,188 INFO L435 NwaCegarLoop]: 834 mSDtfsCounter, 3005 mSDsluCounter, 13879 mSDsCounter, 0 mSdLazyCounter, 8206 mSolverCounterSat, 1088 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3005 SdHoareTripleChecker+Valid, 14713 SdHoareTripleChecker+Invalid, 9294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1088 IncrementalHoareTripleChecker+Valid, 8206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:31,189 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3005 Valid, 14713 Invalid, 9294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1088 Valid, 8206 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2024-11-28 04:46:31,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33891 states. [2024-11-28 04:46:35,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33891 to 10635. [2024-11-28 04:46:35,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10635 states, 8761 states have (on average 1.1760073051021573) internal successors, (10303), 8831 states have internal predecessors, (10303), 1164 states have call successors, (1164), 709 states have call predecessors, (1164), 709 states have return successors, (1164), 1094 states have call predecessors, (1164), 1164 states have call successors, (1164) [2024-11-28 04:46:35,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10635 states to 10635 states and 12631 transitions. [2024-11-28 04:46:35,109 INFO L78 Accepts]: Start accepts. Automaton has 10635 states and 12631 transitions. Word has length 368 [2024-11-28 04:46:35,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:35,109 INFO L471 AbstractCegarLoop]: Abstraction has 10635 states and 12631 transitions. [2024-11-28 04:46:35,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 9.057142857142857) internal successors, (317), 29 states have internal predecessors, (317), 8 states have call successors, (52), 9 states have call predecessors, (52), 17 states have return successors, (53), 14 states have call predecessors, (53), 8 states have call successors, (53) [2024-11-28 04:46:35,109 INFO L276 IsEmpty]: Start isEmpty. Operand 10635 states and 12631 transitions. [2024-11-28 04:46:35,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2024-11-28 04:46:35,117 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:35,117 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1] [2024-11-28 04:46:35,127 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2024-11-28 04:46:35,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-11-28 04:46:35,318 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:35,318 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:35,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1466229555, now seen corresponding path program 1 times [2024-11-28 04:46:35,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:35,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731058572] [2024-11-28 04:46:35,319 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:35,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:35,618 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2024-11-28 04:46:35,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:35,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731058572] [2024-11-28 04:46:35,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731058572] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:35,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:35,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:46:35,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235684396] [2024-11-28 04:46:35,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:35,620 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:46:35,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:35,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:46:35,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:46:35,620 INFO L87 Difference]: Start difference. First operand 10635 states and 12631 transitions. Second operand has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 8 states have internal predecessors, (132), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:46:41,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:41,863 INFO L93 Difference]: Finished difference Result 20377 states and 24048 transitions. [2024-11-28 04:46:41,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:46:41,864 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 8 states have internal predecessors, (132), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 373 [2024-11-28 04:46:41,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:41,899 INFO L225 Difference]: With dead ends: 20377 [2024-11-28 04:46:41,899 INFO L226 Difference]: Without dead ends: 15106 [2024-11-28 04:46:41,907 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:46:41,908 INFO L435 NwaCegarLoop]: 400 mSDtfsCounter, 321 mSDsluCounter, 2104 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:41,908 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [331 Valid, 2504 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:46:41,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15106 states. [2024-11-28 04:46:45,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15106 to 10551. [2024-11-28 04:46:45,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10551 states, 8691 states have (on average 1.1725923369002416) internal successors, (10191), 8761 states have internal predecessors, (10191), 1150 states have call successors, (1150), 709 states have call predecessors, (1150), 709 states have return successors, (1150), 1080 states have call predecessors, (1150), 1150 states have call successors, (1150) [2024-11-28 04:46:45,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10551 states to 10551 states and 12491 transitions. [2024-11-28 04:46:45,065 INFO L78 Accepts]: Start accepts. Automaton has 10551 states and 12491 transitions. Word has length 373 [2024-11-28 04:46:45,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:45,065 INFO L471 AbstractCegarLoop]: Abstraction has 10551 states and 12491 transitions. [2024-11-28 04:46:45,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.666666666666666) internal successors, (132), 8 states have internal predecessors, (132), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:46:45,065 INFO L276 IsEmpty]: Start isEmpty. Operand 10551 states and 12491 transitions. [2024-11-28 04:46:45,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 375 [2024-11-28 04:46:45,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:45,076 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1] [2024-11-28 04:46:45,076 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-11-28 04:46:45,076 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:45,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:45,076 INFO L85 PathProgramCache]: Analyzing trace with hash -549243690, now seen corresponding path program 1 times [2024-11-28 04:46:45,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:45,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518671264] [2024-11-28 04:46:45,077 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:45,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:45,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:45,182 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 957 trivial. 0 not checked. [2024-11-28 04:46:45,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:45,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518671264] [2024-11-28 04:46:45,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518671264] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:45,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:45,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:46:45,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030275028] [2024-11-28 04:46:45,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:45,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:46:45,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:45,184 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:46:45,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:46:45,184 INFO L87 Difference]: Start difference. First operand 10551 states and 12491 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:46:50,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:46:50,359 INFO L93 Difference]: Finished difference Result 18310 states and 21534 transitions. [2024-11-28 04:46:50,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:46:50,360 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) Word has length 374 [2024-11-28 04:46:50,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:46:50,394 INFO L225 Difference]: With dead ends: 18310 [2024-11-28 04:46:50,394 INFO L226 Difference]: Without dead ends: 13116 [2024-11-28 04:46:50,403 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 [2024-11-28 04:46:50,403 INFO L435 NwaCegarLoop]: 344 mSDtfsCounter, 124 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:46:50,403 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 531 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:46:50,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13116 states. [2024-11-28 04:46:53,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13116 to 10523. [2024-11-28 04:46:53,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10523 states, 8663 states have (on average 1.1650698372388317) internal successors, (10093), 8733 states have internal predecessors, (10093), 1150 states have call successors, (1150), 709 states have call predecessors, (1150), 709 states have return successors, (1150), 1080 states have call predecessors, (1150), 1150 states have call successors, (1150) [2024-11-28 04:46:53,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10523 states to 10523 states and 12393 transitions. [2024-11-28 04:46:53,531 INFO L78 Accepts]: Start accepts. Automaton has 10523 states and 12393 transitions. Word has length 374 [2024-11-28 04:46:53,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:46:53,532 INFO L471 AbstractCegarLoop]: Abstraction has 10523 states and 12393 transitions. [2024-11-28 04:46:53,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 3 states have call successors, (22), 2 states have call predecessors, (22), 1 states have return successors, (21), 2 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:46:53,532 INFO L276 IsEmpty]: Start isEmpty. Operand 10523 states and 12393 transitions. [2024-11-28 04:46:53,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-11-28 04:46:53,540 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:46:53,541 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-11-28 04:46:53,541 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-11-28 04:46:53,541 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:46:53,541 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:53,541 INFO L85 PathProgramCache]: Analyzing trace with hash 501425866, now seen corresponding path program 1 times [2024-11-28 04:46:53,541 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:53,541 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696712496] [2024-11-28 04:46:53,541 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:53,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:53,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:53,826 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2024-11-28 04:46:53,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:53,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696712496] [2024-11-28 04:46:53,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696712496] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:46:53,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [40318163] [2024-11-28 04:46:53,826 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:53,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:46:53,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:46:53,829 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:46:53,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-11-28 04:46:54,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:54,247 INFO L256 TraceCheckSpWp]: Trace formula consists of 1392 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-28 04:46:54,253 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:46:54,510 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 236 proven. 10 refuted. 0 times theorem prover too weak. 724 trivial. 0 not checked. [2024-11-28 04:46:54,510 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:46:54,824 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 931 trivial. 0 not checked. [2024-11-28 04:46:54,825 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [40318163] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:46:54,825 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:46:54,825 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 10] total 21 [2024-11-28 04:46:54,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485216387] [2024-11-28 04:46:54,825 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:46:54,826 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 04:46:54,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:54,826 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 04:46:54,826 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2024-11-28 04:46:54,826 INFO L87 Difference]: Start difference. First operand 10523 states and 12393 transitions. Second operand has 21 states, 21 states have (on average 8.80952380952381) internal successors, (185), 17 states have internal predecessors, (185), 5 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) [2024-11-28 04:47:01,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:01,907 INFO L93 Difference]: Finished difference Result 22265 states and 26180 transitions. [2024-11-28 04:47:01,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 04:47:01,907 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 8.80952380952381) internal successors, (185), 17 states have internal predecessors, (185), 5 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) Word has length 375 [2024-11-28 04:47:01,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:01,967 INFO L225 Difference]: With dead ends: 22265 [2024-11-28 04:47:01,968 INFO L226 Difference]: Without dead ends: 16896 [2024-11-28 04:47:01,981 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 776 GetRequests, 742 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=180, Invalid=1080, Unknown=0, NotChecked=0, Total=1260 [2024-11-28 04:47:01,982 INFO L435 NwaCegarLoop]: 389 mSDtfsCounter, 779 mSDsluCounter, 4870 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 163 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 1729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 163 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:01,982 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 5259 Invalid, 1729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [163 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-28 04:47:01,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16896 states. [2024-11-28 04:47:05,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16896 to 10432. [2024-11-28 04:47:05,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10432 states, 8586 states have (on average 1.1567668297228046) internal successors, (9932), 8656 states have internal predecessors, (9932), 1136 states have call successors, (1136), 709 states have call predecessors, (1136), 709 states have return successors, (1136), 1066 states have call predecessors, (1136), 1136 states have call successors, (1136) [2024-11-28 04:47:05,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10432 states to 10432 states and 12204 transitions. [2024-11-28 04:47:05,175 INFO L78 Accepts]: Start accepts. Automaton has 10432 states and 12204 transitions. Word has length 375 [2024-11-28 04:47:05,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:05,176 INFO L471 AbstractCegarLoop]: Abstraction has 10432 states and 12204 transitions. [2024-11-28 04:47:05,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 8.80952380952381) internal successors, (185), 17 states have internal predecessors, (185), 5 states have call successors, (34), 4 states have call predecessors, (34), 7 states have return successors, (33), 8 states have call predecessors, (33), 5 states have call successors, (33) [2024-11-28 04:47:05,176 INFO L276 IsEmpty]: Start isEmpty. Operand 10432 states and 12204 transitions. [2024-11-28 04:47:05,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-11-28 04:47:05,184 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:05,184 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-11-28 04:47:05,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-11-28 04:47:05,385 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0438fbf0-08c9-4720-8a9b-952f2d735397/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:47:05,385 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:05,385 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:05,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1492718840, now seen corresponding path program 1 times [2024-11-28 04:47:05,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:05,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936676807] [2024-11-28 04:47:05,386 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:05,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:05,779 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2024-11-28 04:47:05,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:05,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936676807] [2024-11-28 04:47:05,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936676807] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:05,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:05,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:47:05,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489185327] [2024-11-28 04:47:05,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:05,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:47:05,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:05,781 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:47:05,781 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:47:05,781 INFO L87 Difference]: Start difference. First operand 10432 states and 12204 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:47:10,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:10,955 INFO L93 Difference]: Finished difference Result 18802 states and 21920 transitions. [2024-11-28 04:47:10,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:47:10,955 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 375 [2024-11-28 04:47:10,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:10,990 INFO L225 Difference]: With dead ends: 18802 [2024-11-28 04:47:10,990 INFO L226 Difference]: Without dead ends: 13811 [2024-11-28 04:47:10,998 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:47:10,999 INFO L435 NwaCegarLoop]: 341 mSDtfsCounter, 333 mSDsluCounter, 1947 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 340 SdHoareTripleChecker+Valid, 2288 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:10,999 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [340 Valid, 2288 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 04:47:11,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13811 states. [2024-11-28 04:47:14,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13811 to 10404. [2024-11-28 04:47:14,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10404 states, 8558 states have (on average 1.1556438420191633) internal successors, (9890), 8628 states have internal predecessors, (9890), 1136 states have call successors, (1136), 709 states have call predecessors, (1136), 709 states have return successors, (1136), 1066 states have call predecessors, (1136), 1136 states have call successors, (1136) [2024-11-28 04:47:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10404 states to 10404 states and 12162 transitions. [2024-11-28 04:47:14,119 INFO L78 Accepts]: Start accepts. Automaton has 10404 states and 12162 transitions. Word has length 375 [2024-11-28 04:47:14,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:14,119 INFO L471 AbstractCegarLoop]: Abstraction has 10404 states and 12162 transitions. [2024-11-28 04:47:14,119 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:47:14,119 INFO L276 IsEmpty]: Start isEmpty. Operand 10404 states and 12162 transitions. [2024-11-28 04:47:14,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-11-28 04:47:14,128 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:14,128 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-11-28 04:47:14,128 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-11-28 04:47:14,128 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:14,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:14,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1885745850, now seen corresponding path program 1 times [2024-11-28 04:47:14,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:14,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145098139] [2024-11-28 04:47:14,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:14,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:14,333 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2024-11-28 04:47:14,333 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:14,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145098139] [2024-11-28 04:47:14,333 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145098139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:14,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:14,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:47:14,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225356761] [2024-11-28 04:47:14,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:14,334 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:47:14,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:14,334 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:47:14,334 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:47:14,335 INFO L87 Difference]: Start difference. First operand 10404 states and 12162 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-28 04:47:17,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:17,315 INFO L93 Difference]: Finished difference Result 15556 states and 18257 transitions. [2024-11-28 04:47:17,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:47:17,316 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) Word has length 375 [2024-11-28 04:47:17,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:17,345 INFO L225 Difference]: With dead ends: 15556 [2024-11-28 04:47:17,345 INFO L226 Difference]: Without dead ends: 10425 [2024-11-28 04:47:17,353 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:47:17,354 INFO L435 NwaCegarLoop]: 227 mSDtfsCounter, 3 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 653 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:17,354 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 653 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:47:17,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10425 states. [2024-11-28 04:47:20,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10425 to 10376. [2024-11-28 04:47:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10376 states, 8530 states have (on average 1.1528722157092615) internal successors, (9834), 8600 states have internal predecessors, (9834), 1136 states have call successors, (1136), 709 states have call predecessors, (1136), 709 states have return successors, (1136), 1066 states have call predecessors, (1136), 1136 states have call successors, (1136) [2024-11-28 04:47:20,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10376 states to 10376 states and 12106 transitions. [2024-11-28 04:47:20,514 INFO L78 Accepts]: Start accepts. Automaton has 10376 states and 12106 transitions. Word has length 375 [2024-11-28 04:47:20,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:20,515 INFO L471 AbstractCegarLoop]: Abstraction has 10376 states and 12106 transitions. [2024-11-28 04:47:20,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 4 states have internal predecessors, (125), 4 states have call successors, (21), 2 states have call predecessors, (21), 1 states have return successors, (20), 3 states have call predecessors, (20), 3 states have call successors, (20) [2024-11-28 04:47:20,515 INFO L276 IsEmpty]: Start isEmpty. Operand 10376 states and 12106 transitions. [2024-11-28 04:47:20,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 376 [2024-11-28 04:47:20,523 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:47:20,523 INFO L218 NwaCegarLoop]: trace histogram [13, 13, 12, 12, 9, 8, 8, 8, 8, 7, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-11-28 04:47:20,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-11-28 04:47:20,523 INFO L396 AbstractCegarLoop]: === Iteration 60 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:47:20,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:47:20,524 INFO L85 PathProgramCache]: Analyzing trace with hash 632834301, now seen corresponding path program 1 times [2024-11-28 04:47:20,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:47:20,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994463379] [2024-11-28 04:47:20,524 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:47:20,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:47:20,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:47:20,970 INFO L134 CoverageAnalysis]: Checked inductivity of 970 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 943 trivial. 0 not checked. [2024-11-28 04:47:20,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:47:20,970 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994463379] [2024-11-28 04:47:20,970 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [994463379] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:47:20,970 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:47:20,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:47:20,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585041841] [2024-11-28 04:47:20,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:47:20,971 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:47:20,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:47:20,972 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:47:20,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:47:20,972 INFO L87 Difference]: Start difference. First operand 10376 states and 12106 transitions. Second operand has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:47:26,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:47:26,157 INFO L93 Difference]: Finished difference Result 19072 states and 22252 transitions. [2024-11-28 04:47:26,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-28 04:47:26,157 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) Word has length 375 [2024-11-28 04:47:26,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:47:26,174 INFO L225 Difference]: With dead ends: 19072 [2024-11-28 04:47:26,174 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 04:47:26,191 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2024-11-28 04:47:26,192 INFO L435 NwaCegarLoop]: 508 mSDtfsCounter, 241 mSDsluCounter, 2535 mSDsCounter, 0 mSdLazyCounter, 700 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 3043 SdHoareTripleChecker+Invalid, 713 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 700 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:47:26,192 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [250 Valid, 3043 Invalid, 713 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 700 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-28 04:47:26,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 04:47:26,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 04:47:26,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:47:26,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 04:47:26,204 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 375 [2024-11-28 04:47:26,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:47:26,205 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 04:47:26,205 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 14.88888888888889) internal successors, (134), 8 states have internal predecessors, (134), 3 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (21), 3 states have call predecessors, (21), 2 states have call successors, (21) [2024-11-28 04:47:26,205 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 04:47:26,205 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 04:47:26,211 INFO L782 garLoopResultBuilder]: Registering result SAFE for location assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 04:47:26,212 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-11-28 04:47:26,220 INFO L422 BasicCegarLoop]: Path program histogram: [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] [2024-11-28 04:47:26,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions.