./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC --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 cdd691469d2e12c2dd1871c48be4dd2db0b9d27541ac5dee5ff25a04db0d98eb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:59:11,054 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:59:11,152 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:59:11,159 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:59:11,160 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:59:11,192 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:59:11,193 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:59:11,193 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:59:11,196 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:59:11,196 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:59:11,196 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:59:11,196 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:59:11,197 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:59:11,197 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:59:11,198 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:59:11,199 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:59:11,199 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:59:11,199 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:59:11,200 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:59:11,200 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:59:11,200 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:59:11,200 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:59:11,200 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:59:11,200 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:59:11,200 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:59:11,200 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:59:11,201 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:59:11,201 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:59:11,201 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:59:11,201 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:59:11,201 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:59:11,202 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:59:11,202 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:59:11,202 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:59:11,203 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:59:11,203 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:59:11,203 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:59:11,203 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:59:11,203 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:59:11,203 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:59:11,203 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:59:11,203 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:59:11,203 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:59:11,204 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:59:11,204 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:59:11,204 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:59:11,204 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:59:11,204 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:59:11,204 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_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC 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 -> cdd691469d2e12c2dd1871c48be4dd2db0b9d27541ac5dee5ff25a04db0d98eb [2024-11-24 00:59:11,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:59:11,558 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:59:11,560 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:59:11,562 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:59:11,562 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:59:11,563 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c [2024-11-24 00:59:14,608 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/data/27fe5eae6/e5cbb15dc1ef474a8ae44b001a861889/FLAG11b5a0bbb [2024-11-24 00:59:14,909 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:59:14,910 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c [2024-11-24 00:59:14,922 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/data/27fe5eae6/e5cbb15dc1ef474a8ae44b001a861889/FLAG11b5a0bbb [2024-11-24 00:59:14,936 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/data/27fe5eae6/e5cbb15dc1ef474a8ae44b001a861889 [2024-11-24 00:59:14,938 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:59:14,940 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:59:14,941 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:59:14,941 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:59:14,946 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:59:14,947 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:59:14" (1/1) ... [2024-11-24 00:59:14,948 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65571664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:14, skipping insertion in model container [2024-11-24 00:59:14,948 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:59:14" (1/1) ... [2024-11-24 00:59:14,978 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:59:15,228 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_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c[14702,14715] [2024-11-24 00:59:15,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:59:15,243 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:59:15,337 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_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/sv-benchmarks/c/seq-mthreaded/pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c[14702,14715] [2024-11-24 00:59:15,338 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:59:15,359 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:59:15,360 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:15 WrapperNode [2024-11-24 00:59:15,360 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:59:15,361 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:59:15,361 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:59:15,361 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:59:15,368 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:15" (1/1) ... [2024-11-24 00:59:15,380 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:15" (1/1) ... [2024-11-24 00:59:15,417 INFO L138 Inliner]: procedures = 32, calls = 48, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 509 [2024-11-24 00:59:15,418 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:59:15,418 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:59:15,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:59:15,419 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:59:15,429 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:15" (1/1) ... [2024-11-24 00:59:15,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:15" (1/1) ... [2024-11-24 00:59:15,434 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:15" (1/1) ... [2024-11-24 00:59:15,460 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]. [2024-11-24 00:59:15,461 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:15" (1/1) ... [2024-11-24 00:59:15,461 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:15" (1/1) ... [2024-11-24 00:59:15,479 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:15" (1/1) ... [2024-11-24 00:59:15,481 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:15" (1/1) ... [2024-11-24 00:59:15,487 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:15" (1/1) ... [2024-11-24 00:59:15,489 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:15" (1/1) ... [2024-11-24 00:59:15,491 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:15" (1/1) ... [2024-11-24 00:59:15,495 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:59:15,496 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:59:15,496 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:59:15,496 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:59:15,498 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:15" (1/1) ... [2024-11-24 00:59:15,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:59:15,517 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:59:15,535 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:59:15,543 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:59:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure read_manual_selection_history [2024-11-24 00:59:15,571 INFO L138 BoogieDeclarations]: Found implementation of procedure read_manual_selection_history [2024-11-24 00:59:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:59:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure read_side2_failed_history [2024-11-24 00:59:15,572 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side2_failed_history [2024-11-24 00:59:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2024-11-24 00:59:15,572 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2024-11-24 00:59:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure flip_the_side [2024-11-24 00:59:15,573 INFO L138 BoogieDeclarations]: Found implementation of procedure flip_the_side [2024-11-24 00:59:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-24 00:59:15,573 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-24 00:59:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:59:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure read_side1_failed_history [2024-11-24 00:59:15,573 INFO L138 BoogieDeclarations]: Found implementation of procedure read_side1_failed_history [2024-11-24 00:59:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:59:15,573 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:59:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure read_active_side_history [2024-11-24 00:59:15,574 INFO L138 BoogieDeclarations]: Found implementation of procedure read_active_side_history [2024-11-24 00:59:15,686 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:59:15,688 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:59:16,477 INFO L? ?]: Removed 115 outVars from TransFormulas that were not future-live. [2024-11-24 00:59:16,477 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:59:16,497 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:59:16,500 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-24 00:59:16,500 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:59:16 BoogieIcfgContainer [2024-11-24 00:59:16,500 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:59:16,504 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:59:16,504 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:59:16,510 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:59:16,510 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:59:14" (1/3) ... [2024-11-24 00:59:16,511 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fcc8a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:59:16, skipping insertion in model container [2024-11-24 00:59:16,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:59:15" (2/3) ... [2024-11-24 00:59:16,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5fcc8a3b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:59:16, skipping insertion in model container [2024-11-24 00:59:16,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:59:16" (3/3) ... [2024-11-24 00:59:16,514 INFO L128 eAbstractionObserver]: Analyzing ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c [2024-11-24 00:59:16,529 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:59:16,531 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG pals_STARTPALS_ActiveStandby.4_2.ufo.BOUNDED-10.pals.c that has 8 procedures, 182 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-24 00:59:16,600 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:59:16,615 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;@e46a952, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:59:16,616 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:59:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand has 182 states, 142 states have (on average 1.5492957746478873) internal successors, (220), 143 states have internal predecessors, (220), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 00:59:16,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-24 00:59:16,632 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:16,633 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] [2024-11-24 00:59:16,634 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:16,638 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:16,639 INFO L85 PathProgramCache]: Analyzing trace with hash 1322673909, now seen corresponding path program 1 times [2024-11-24 00:59:16,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:16,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [566805743] [2024-11-24 00:59:16,647 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:16,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:16,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:59:16,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:16,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [566805743] [2024-11-24 00:59:16,950 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [566805743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:16,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:16,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-24 00:59:16,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583367255] [2024-11-24 00:59:16,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:16,958 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-24 00:59:16,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:16,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-24 00:59:16,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:59:16,978 INFO L87 Difference]: Start difference. First operand has 182 states, 142 states have (on average 1.5492957746478873) internal successors, (220), 143 states have internal predecessors, (220), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) Second operand has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 00:59:17,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:17,024 INFO L93 Difference]: Finished difference Result 348 states and 564 transitions. [2024-11-24 00:59:17,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-24 00:59:17,026 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-24 00:59:17,026 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:17,034 INFO L225 Difference]: With dead ends: 348 [2024-11-24 00:59:17,034 INFO L226 Difference]: Without dead ends: 178 [2024-11-24 00:59:17,039 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-24 00:59:17,041 INFO L435 NwaCegarLoop]: 279 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:17,042 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 279 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:59:17,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-24 00:59:17,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2024-11-24 00:59:17,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 139 states have (on average 1.5323741007194245) internal successors, (213), 139 states have internal predecessors, (213), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 00:59:17,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 275 transitions. [2024-11-24 00:59:17,092 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 275 transitions. Word has length 29 [2024-11-24 00:59:17,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:17,092 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 275 transitions. [2024-11-24 00:59:17,092 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 12.5) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 00:59:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 275 transitions. [2024-11-24 00:59:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-24 00:59:17,094 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:17,094 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] [2024-11-24 00:59:17,095 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:59:17,095 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:17,095 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:17,096 INFO L85 PathProgramCache]: Analyzing trace with hash -482764425, now seen corresponding path program 1 times [2024-11-24 00:59:17,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:17,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288547643] [2024-11-24 00:59:17,096 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:17,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:17,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:59:17,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:17,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288547643] [2024-11-24 00:59:17,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288547643] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:17,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:17,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-24 00:59:17,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345591066] [2024-11-24 00:59:17,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:17,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-24 00:59:17,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:17,495 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-24 00:59:17,496 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:59:17,496 INFO L87 Difference]: Start difference. First operand 178 states and 275 transitions. Second operand has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 00:59:17,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:17,662 INFO L93 Difference]: Finished difference Result 456 states and 712 transitions. [2024-11-24 00:59:17,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:59:17,663 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 29 [2024-11-24 00:59:17,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:17,666 INFO L225 Difference]: With dead ends: 456 [2024-11-24 00:59:17,666 INFO L226 Difference]: Without dead ends: 292 [2024-11-24 00:59:17,668 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-24 00:59:17,669 INFO L435 NwaCegarLoop]: 269 mSDtfsCounter, 135 mSDsluCounter, 1053 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 1322 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:17,669 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 1322 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:59:17,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2024-11-24 00:59:17,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 178. [2024-11-24 00:59:17,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 139 states have (on average 1.4460431654676258) internal successors, (201), 139 states have internal predecessors, (201), 31 states have call successors, (31), 7 states have call predecessors, (31), 7 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 00:59:17,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 263 transitions. [2024-11-24 00:59:17,691 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 263 transitions. Word has length 29 [2024-11-24 00:59:17,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:17,691 INFO L471 AbstractCegarLoop]: Abstraction has 178 states and 263 transitions. [2024-11-24 00:59:17,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.0) internal successors, (25), 6 states have internal predecessors, (25), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 00:59:17,691 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 263 transitions. [2024-11-24 00:59:17,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-24 00:59:17,692 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:17,693 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:17,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-24 00:59:17,693 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:17,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:17,694 INFO L85 PathProgramCache]: Analyzing trace with hash -757328526, now seen corresponding path program 1 times [2024-11-24 00:59:17,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:17,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062215637] [2024-11-24 00:59:17,694 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:17,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:17,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:59:18,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:18,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062215637] [2024-11-24 00:59:18,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062215637] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:18,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:18,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:59:18,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359984413] [2024-11-24 00:59:18,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:18,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:59:18,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:18,136 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:59:18,136 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:59:18,136 INFO L87 Difference]: Start difference. First operand 178 states and 263 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 00:59:18,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:18,231 INFO L93 Difference]: Finished difference Result 343 states and 516 transitions. [2024-11-24 00:59:18,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:59:18,232 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2024-11-24 00:59:18,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:18,234 INFO L225 Difference]: With dead ends: 343 [2024-11-24 00:59:18,235 INFO L226 Difference]: Without dead ends: 182 [2024-11-24 00:59:18,236 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 [2024-11-24 00:59:18,237 INFO L435 NwaCegarLoop]: 257 mSDtfsCounter, 3 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 761 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:18,237 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 761 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:59:18,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2024-11-24 00:59:18,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2024-11-24 00:59:18,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 142 states have (on average 1.4366197183098592) internal successors, (204), 142 states have internal predecessors, (204), 31 states have call successors, (31), 8 states have call predecessors, (31), 8 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-24 00:59:18,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 266 transitions. [2024-11-24 00:59:18,265 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 266 transitions. Word has length 40 [2024-11-24 00:59:18,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:18,269 INFO L471 AbstractCegarLoop]: Abstraction has 182 states and 266 transitions. [2024-11-24 00:59:18,270 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 3 states have internal predecessors, (36), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-24 00:59:18,270 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 266 transitions. [2024-11-24 00:59:18,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-24 00:59:18,271 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:18,271 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:18,271 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-24 00:59:18,271 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:18,272 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:18,272 INFO L85 PathProgramCache]: Analyzing trace with hash 958748420, now seen corresponding path program 1 times [2024-11-24 00:59:18,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:18,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641087553] [2024-11-24 00:59:18,272 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:18,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:18,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:18,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:59:18,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:18,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641087553] [2024-11-24 00:59:18,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641087553] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:18,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:18,439 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:59:18,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921867043] [2024-11-24 00:59:18,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:18,439 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:59:18,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:18,441 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:59:18,441 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:59:18,441 INFO L87 Difference]: Start difference. First operand 182 states and 266 transitions. Second operand has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:59:18,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:18,508 INFO L93 Difference]: Finished difference Result 500 states and 741 transitions. [2024-11-24 00:59:18,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:59:18,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 56 [2024-11-24 00:59:18,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:18,511 INFO L225 Difference]: With dead ends: 500 [2024-11-24 00:59:18,512 INFO L226 Difference]: Without dead ends: 335 [2024-11-24 00:59:18,515 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 [2024-11-24 00:59:18,518 INFO L435 NwaCegarLoop]: 274 mSDtfsCounter, 214 mSDsluCounter, 254 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:18,518 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 528 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:59:18,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2024-11-24 00:59:18,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 328. [2024-11-24 00:59:18,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 251 states have (on average 1.4581673306772909) internal successors, (366), 252 states have internal predecessors, (366), 60 states have call successors, (60), 16 states have call predecessors, (60), 16 states have return successors, (60), 59 states have call predecessors, (60), 60 states have call successors, (60) [2024-11-24 00:59:18,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 486 transitions. [2024-11-24 00:59:18,576 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 486 transitions. Word has length 56 [2024-11-24 00:59:18,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:18,577 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 486 transitions. [2024-11-24 00:59:18,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.0) internal successors, (45), 3 states have internal predecessors, (45), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:59:18,578 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 486 transitions. [2024-11-24 00:59:18,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-24 00:59:18,581 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:18,581 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:18,582 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-24 00:59:18,582 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:18,583 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:18,583 INFO L85 PathProgramCache]: Analyzing trace with hash -261203095, now seen corresponding path program 1 times [2024-11-24 00:59:18,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:18,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593817204] [2024-11-24 00:59:18,584 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:18,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:18,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:18,737 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:59:18,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:18,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593817204] [2024-11-24 00:59:18,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593817204] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:18,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:18,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:59:18,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322370109] [2024-11-24 00:59:18,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:18,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:59:18,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:18,740 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:59:18,741 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:59:18,741 INFO L87 Difference]: Start difference. First operand 328 states and 486 transitions. Second operand has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:59:18,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:18,838 INFO L93 Difference]: Finished difference Result 923 states and 1379 transitions. [2024-11-24 00:59:18,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:59:18,839 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-11-24 00:59:18,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:18,846 INFO L225 Difference]: With dead ends: 923 [2024-11-24 00:59:18,846 INFO L226 Difference]: Without dead ends: 612 [2024-11-24 00:59:18,850 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 [2024-11-24 00:59:18,851 INFO L435 NwaCegarLoop]: 294 mSDtfsCounter, 216 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:18,852 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 550 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:59:18,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2024-11-24 00:59:18,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 606. [2024-11-24 00:59:18,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 457 states have (on average 1.4682713347921226) internal successors, (671), 460 states have internal predecessors, (671), 117 states have call successors, (117), 31 states have call predecessors, (117), 31 states have return successors, (117), 114 states have call predecessors, (117), 117 states have call successors, (117) [2024-11-24 00:59:18,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 905 transitions. [2024-11-24 00:59:18,934 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 905 transitions. Word has length 57 [2024-11-24 00:59:18,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:18,935 INFO L471 AbstractCegarLoop]: Abstraction has 606 states and 905 transitions. [2024-11-24 00:59:18,935 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 15.333333333333334) internal successors, (46), 3 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:59:18,935 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 905 transitions. [2024-11-24 00:59:18,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-24 00:59:18,940 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:18,940 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:18,941 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-24 00:59:18,941 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:18,941 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:18,941 INFO L85 PathProgramCache]: Analyzing trace with hash -1541066773, now seen corresponding path program 1 times [2024-11-24 00:59:18,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:18,941 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433544582] [2024-11-24 00:59:18,942 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:18,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:19,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:19,203 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:59:19,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:19,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433544582] [2024-11-24 00:59:19,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433544582] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:19,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:19,204 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:59:19,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772034455] [2024-11-24 00:59:19,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:19,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:59:19,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:19,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:59:19,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:59:19,205 INFO L87 Difference]: Start difference. First operand 606 states and 905 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:59:19,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:19,491 INFO L93 Difference]: Finished difference Result 1300 states and 1937 transitions. [2024-11-24 00:59:19,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:59:19,492 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 57 [2024-11-24 00:59:19,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:19,500 INFO L225 Difference]: With dead ends: 1300 [2024-11-24 00:59:19,501 INFO L226 Difference]: Without dead ends: 711 [2024-11-24 00:59:19,507 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:59:19,508 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 371 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:19,508 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 675 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:59:19,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 711 states. [2024-11-24 00:59:19,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 711 to 695. [2024-11-24 00:59:19,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 533 states have (on average 1.452157598499062) internal successors, (774), 536 states have internal predecessors, (774), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:59:19,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1022 transitions. [2024-11-24 00:59:19,598 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1022 transitions. Word has length 57 [2024-11-24 00:59:19,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:19,598 INFO L471 AbstractCegarLoop]: Abstraction has 695 states and 1022 transitions. [2024-11-24 00:59:19,598 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:59:19,599 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1022 transitions. [2024-11-24 00:59:19,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-24 00:59:19,600 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:19,600 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:19,600 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-24 00:59:19,601 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:19,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:19,601 INFO L85 PathProgramCache]: Analyzing trace with hash 1635374083, now seen corresponding path program 1 times [2024-11-24 00:59:19,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:19,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184512142] [2024-11-24 00:59:19,601 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:19,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:19,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:19,809 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:59:19,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:19,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184512142] [2024-11-24 00:59:19,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184512142] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:19,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:19,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-24 00:59:19,810 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013949545] [2024-11-24 00:59:19,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:19,811 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:59:19,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:19,811 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:59:19,811 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:59:19,812 INFO L87 Difference]: Start difference. First operand 695 states and 1022 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:59:20,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:20,078 INFO L93 Difference]: Finished difference Result 1304 states and 1937 transitions. [2024-11-24 00:59:20,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:59:20,079 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2024-11-24 00:59:20,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:20,087 INFO L225 Difference]: With dead ends: 1304 [2024-11-24 00:59:20,087 INFO L226 Difference]: Without dead ends: 715 [2024-11-24 00:59:20,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:59:20,091 INFO L435 NwaCegarLoop]: 229 mSDtfsCounter, 371 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:20,092 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [371 Valid, 675 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:59:20,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2024-11-24 00:59:20,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 703. [2024-11-24 00:59:20,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 541 states have (on average 1.44547134935305) internal successors, (782), 544 states have internal predecessors, (782), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:59:20,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1030 transitions. [2024-11-24 00:59:20,179 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1030 transitions. Word has length 58 [2024-11-24 00:59:20,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:20,179 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1030 transitions. [2024-11-24 00:59:20,179 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:59:20,180 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1030 transitions. [2024-11-24 00:59:20,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-24 00:59:20,181 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:20,181 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:20,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-24 00:59:20,182 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:20,183 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:20,183 INFO L85 PathProgramCache]: Analyzing trace with hash 852896981, now seen corresponding path program 1 times [2024-11-24 00:59:20,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:20,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055161906] [2024-11-24 00:59:20,184 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:20,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:20,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:20,382 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:59:20,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:20,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055161906] [2024-11-24 00:59:20,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055161906] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:20,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:20,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:59:20,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168159451] [2024-11-24 00:59:20,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:20,384 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:59:20,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:20,385 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:59:20,385 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:59:20,385 INFO L87 Difference]: Start difference. First operand 703 states and 1030 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:59:20,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:20,602 INFO L93 Difference]: Finished difference Result 1292 states and 1917 transitions. [2024-11-24 00:59:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:59:20,603 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 60 [2024-11-24 00:59:20,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:20,608 INFO L225 Difference]: With dead ends: 1292 [2024-11-24 00:59:20,608 INFO L226 Difference]: Without dead ends: 703 [2024-11-24 00:59:20,610 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 [2024-11-24 00:59:20,611 INFO L435 NwaCegarLoop]: 230 mSDtfsCounter, 61 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:20,611 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 669 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:59:20,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2024-11-24 00:59:20,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 703. [2024-11-24 00:59:20,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 703 states, 541 states have (on average 1.4380776340110906) internal successors, (778), 544 states have internal predecessors, (778), 124 states have call successors, (124), 37 states have call predecessors, (124), 37 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:59:20,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 703 states to 703 states and 1026 transitions. [2024-11-24 00:59:20,691 INFO L78 Accepts]: Start accepts. Automaton has 703 states and 1026 transitions. Word has length 60 [2024-11-24 00:59:20,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:20,692 INFO L471 AbstractCegarLoop]: Abstraction has 703 states and 1026 transitions. [2024-11-24 00:59:20,692 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 3 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-24 00:59:20,692 INFO L276 IsEmpty]: Start isEmpty. Operand 703 states and 1026 transitions. [2024-11-24 00:59:20,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-24 00:59:20,693 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:20,693 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:20,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-24 00:59:20,694 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:20,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:20,694 INFO L85 PathProgramCache]: Analyzing trace with hash 316098937, now seen corresponding path program 1 times [2024-11-24 00:59:20,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:20,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310355947] [2024-11-24 00:59:20,695 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:20,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:20,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:20,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:59:20,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:20,921 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310355947] [2024-11-24 00:59:20,921 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310355947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:20,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:20,921 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:59:20,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688744622] [2024-11-24 00:59:20,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:20,921 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:59:20,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:20,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:59:20,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:59:20,926 INFO L87 Difference]: Start difference. First operand 703 states and 1026 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:59:21,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:21,034 INFO L93 Difference]: Finished difference Result 1312 states and 1941 transitions. [2024-11-24 00:59:21,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:59:21,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 61 [2024-11-24 00:59:21,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:21,041 INFO L225 Difference]: With dead ends: 1312 [2024-11-24 00:59:21,041 INFO L226 Difference]: Without dead ends: 723 [2024-11-24 00:59:21,043 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 [2024-11-24 00:59:21,043 INFO L435 NwaCegarLoop]: 259 mSDtfsCounter, 4 mSDsluCounter, 514 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 773 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:21,044 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 773 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:59:21,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 723 states. [2024-11-24 00:59:21,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 723 to 723. [2024-11-24 00:59:21,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 723 states, 557 states have (on average 1.4254937163375225) internal successors, (794), 560 states have internal predecessors, (794), 124 states have call successors, (124), 41 states have call predecessors, (124), 41 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:59:21,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 723 states to 723 states and 1042 transitions. [2024-11-24 00:59:21,109 INFO L78 Accepts]: Start accepts. Automaton has 723 states and 1042 transitions. Word has length 61 [2024-11-24 00:59:21,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:21,109 INFO L471 AbstractCegarLoop]: Abstraction has 723 states and 1042 transitions. [2024-11-24 00:59:21,109 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 3 states have internal predecessors, (50), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-24 00:59:21,111 INFO L276 IsEmpty]: Start isEmpty. Operand 723 states and 1042 transitions. [2024-11-24 00:59:21,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-11-24 00:59:21,112 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:21,112 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:21,112 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-24 00:59:21,112 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:21,113 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:21,113 INFO L85 PathProgramCache]: Analyzing trace with hash -1317892801, now seen corresponding path program 1 times [2024-11-24 00:59:21,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:21,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419310879] [2024-11-24 00:59:21,113 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:21,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:21,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:21,343 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:59:21,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:21,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419310879] [2024-11-24 00:59:21,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419310879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:21,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:21,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:59:21,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712615931] [2024-11-24 00:59:21,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:21,345 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:59:21,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:21,345 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:59:21,345 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:59:21,346 INFO L87 Difference]: Start difference. First operand 723 states and 1042 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-24 00:59:21,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:21,473 INFO L93 Difference]: Finished difference Result 1352 states and 1985 transitions. [2024-11-24 00:59:21,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:59:21,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 69 [2024-11-24 00:59:21,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:21,480 INFO L225 Difference]: With dead ends: 1352 [2024-11-24 00:59:21,480 INFO L226 Difference]: Without dead ends: 743 [2024-11-24 00:59:21,482 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 [2024-11-24 00:59:21,483 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 4 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:21,484 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 759 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:59:21,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2024-11-24 00:59:21,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 743. [2024-11-24 00:59:21,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 743 states, 573 states have (on average 1.4136125654450262) internal successors, (810), 576 states have internal predecessors, (810), 124 states have call successors, (124), 45 states have call predecessors, (124), 45 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:59:21,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 743 states to 743 states and 1058 transitions. [2024-11-24 00:59:21,570 INFO L78 Accepts]: Start accepts. Automaton has 743 states and 1058 transitions. Word has length 69 [2024-11-24 00:59:21,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:21,571 INFO L471 AbstractCegarLoop]: Abstraction has 743 states and 1058 transitions. [2024-11-24 00:59:21,571 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 3 states have internal predecessors, (56), 2 states have call successors, (6), 3 states have call predecessors, (6), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-24 00:59:21,571 INFO L276 IsEmpty]: Start isEmpty. Operand 743 states and 1058 transitions. [2024-11-24 00:59:21,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 00:59:21,574 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:21,574 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:21,574 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-24 00:59:21,575 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:21,575 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:21,575 INFO L85 PathProgramCache]: Analyzing trace with hash -501943895, now seen corresponding path program 1 times [2024-11-24 00:59:21,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:21,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257515484] [2024-11-24 00:59:21,575 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:21,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:21,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:21,791 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:59:21,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:21,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257515484] [2024-11-24 00:59:21,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257515484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:21,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:21,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:59:21,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523955343] [2024-11-24 00:59:21,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:21,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:59:21,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:21,793 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:59:21,793 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:59:21,793 INFO L87 Difference]: Start difference. First operand 743 states and 1058 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, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-24 00:59:21,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:21,894 INFO L93 Difference]: Finished difference Result 1388 states and 2001 transitions. [2024-11-24 00:59:21,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:59:21,894 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, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 77 [2024-11-24 00:59:21,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:21,900 INFO L225 Difference]: With dead ends: 1388 [2024-11-24 00:59:21,900 INFO L226 Difference]: Without dead ends: 759 [2024-11-24 00:59:21,902 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 [2024-11-24 00:59:21,903 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 3 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:21,903 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 769 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:59:21,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 759 states. [2024-11-24 00:59:21,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 759 to 759. [2024-11-24 00:59:21,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 759 states, 585 states have (on average 1.405128205128205) internal successors, (822), 588 states have internal predecessors, (822), 124 states have call successors, (124), 49 states have call predecessors, (124), 49 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:59:21,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 759 states to 759 states and 1070 transitions. [2024-11-24 00:59:21,970 INFO L78 Accepts]: Start accepts. Automaton has 759 states and 1070 transitions. Word has length 77 [2024-11-24 00:59:21,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:21,971 INFO L471 AbstractCegarLoop]: Abstraction has 759 states and 1070 transitions. [2024-11-24 00:59:21,971 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, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-24 00:59:21,971 INFO L276 IsEmpty]: Start isEmpty. Operand 759 states and 1070 transitions. [2024-11-24 00:59:21,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-24 00:59:21,979 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:21,979 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:21,979 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-24 00:59:21,980 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:21,980 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:21,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1894515408, now seen corresponding path program 1 times [2024-11-24 00:59:21,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:21,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963600995] [2024-11-24 00:59:21,980 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:21,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:22,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:22,213 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-24 00:59:22,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:22,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963600995] [2024-11-24 00:59:22,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963600995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:22,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:22,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:59:22,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725116830] [2024-11-24 00:59:22,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:22,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:59:22,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:22,216 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:59:22,216 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:59:22,216 INFO L87 Difference]: Start difference. First operand 759 states and 1070 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, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-24 00:59:22,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:22,343 INFO L93 Difference]: Finished difference Result 1424 states and 2041 transitions. [2024-11-24 00:59:22,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:59:22,347 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, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 77 [2024-11-24 00:59:22,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:22,359 INFO L225 Difference]: With dead ends: 1424 [2024-11-24 00:59:22,360 INFO L226 Difference]: Without dead ends: 779 [2024-11-24 00:59:22,362 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 [2024-11-24 00:59:22,362 INFO L435 NwaCegarLoop]: 256 mSDtfsCounter, 4 mSDsluCounter, 503 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 759 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:22,362 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 759 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:59:22,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2024-11-24 00:59:22,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 779. [2024-11-24 00:59:22,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 601 states have (on average 1.394342762063228) internal successors, (838), 604 states have internal predecessors, (838), 124 states have call successors, (124), 53 states have call predecessors, (124), 53 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:59:22,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1086 transitions. [2024-11-24 00:59:22,426 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1086 transitions. Word has length 77 [2024-11-24 00:59:22,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:22,427 INFO L471 AbstractCegarLoop]: Abstraction has 779 states and 1086 transitions. [2024-11-24 00:59:22,427 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, (7), 3 states have call predecessors, (7), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-24 00:59:22,427 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1086 transitions. [2024-11-24 00:59:22,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2024-11-24 00:59:22,429 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:22,430 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:22,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-24 00:59:22,430 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:22,430 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:22,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1393000016, now seen corresponding path program 1 times [2024-11-24 00:59:22,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:22,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078308563] [2024-11-24 00:59:22,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:22,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:22,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:22,709 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:59:22,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:22,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078308563] [2024-11-24 00:59:22,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078308563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:22,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:22,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:59:22,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099338114] [2024-11-24 00:59:22,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:22,711 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:59:22,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:22,711 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:59:22,711 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:59:22,712 INFO L87 Difference]: Start difference. First operand 779 states and 1086 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 00:59:22,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:22,810 INFO L93 Difference]: Finished difference Result 1468 states and 2069 transitions. [2024-11-24 00:59:22,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:59:22,811 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) Word has length 85 [2024-11-24 00:59:22,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:22,817 INFO L225 Difference]: With dead ends: 1468 [2024-11-24 00:59:22,817 INFO L226 Difference]: Without dead ends: 803 [2024-11-24 00:59:22,819 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:59:22,820 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 5 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:22,820 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 771 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:59:22,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2024-11-24 00:59:22,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 803. [2024-11-24 00:59:22,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 621 states have (on average 1.3816425120772946) internal successors, (858), 624 states have internal predecessors, (858), 124 states have call successors, (124), 57 states have call predecessors, (124), 57 states have return successors, (124), 121 states have call predecessors, (124), 124 states have call successors, (124) [2024-11-24 00:59:22,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1106 transitions. [2024-11-24 00:59:22,899 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1106 transitions. Word has length 85 [2024-11-24 00:59:22,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:22,900 INFO L471 AbstractCegarLoop]: Abstraction has 803 states and 1106 transitions. [2024-11-24 00:59:22,900 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 2 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 1 states have call predecessors, (6), 1 states have call successors, (6) [2024-11-24 00:59:22,900 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1106 transitions. [2024-11-24 00:59:22,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-24 00:59:22,904 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:22,905 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:22,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-24 00:59:22,905 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:22,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:22,906 INFO L85 PathProgramCache]: Analyzing trace with hash -557210378, now seen corresponding path program 1 times [2024-11-24 00:59:22,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:22,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654063484] [2024-11-24 00:59:22,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:22,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:23,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:23,755 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 00:59:23,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:23,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654063484] [2024-11-24 00:59:23,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654063484] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:23,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:23,755 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:59:23,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279296065] [2024-11-24 00:59:23,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:23,756 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:59:23,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:23,756 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:59:23,756 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:59:23,757 INFO L87 Difference]: Start difference. First operand 803 states and 1106 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 00:59:24,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:24,189 INFO L93 Difference]: Finished difference Result 2066 states and 2836 transitions. [2024-11-24 00:59:24,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:59:24,190 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 88 [2024-11-24 00:59:24,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:24,202 INFO L225 Difference]: With dead ends: 2066 [2024-11-24 00:59:24,202 INFO L226 Difference]: Without dead ends: 1377 [2024-11-24 00:59:24,204 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:59:24,205 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 212 mSDsluCounter, 1195 mSDsCounter, 0 mSdLazyCounter, 98 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1455 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 98 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:24,205 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1455 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 98 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:59:24,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2024-11-24 00:59:24,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1087. [2024-11-24 00:59:24,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1087 states, 832 states have (on average 1.3701923076923077) internal successors, (1140), 837 states have internal predecessors, (1140), 172 states have call successors, (172), 82 states have call predecessors, (172), 82 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-24 00:59:24,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1087 states to 1087 states and 1484 transitions. [2024-11-24 00:59:24,318 INFO L78 Accepts]: Start accepts. Automaton has 1087 states and 1484 transitions. Word has length 88 [2024-11-24 00:59:24,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:24,319 INFO L471 AbstractCegarLoop]: Abstraction has 1087 states and 1484 transitions. [2024-11-24 00:59:24,319 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-24 00:59:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 1087 states and 1484 transitions. [2024-11-24 00:59:24,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2024-11-24 00:59:24,321 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:24,323 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:24,323 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-24 00:59:24,323 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:24,324 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:24,324 INFO L85 PathProgramCache]: Analyzing trace with hash 67909963, now seen corresponding path program 1 times [2024-11-24 00:59:24,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:24,325 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115478440] [2024-11-24 00:59:24,325 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:24,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:24,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:24,549 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-24 00:59:24,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:24,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115478440] [2024-11-24 00:59:24,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115478440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:24,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:24,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:59:24,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911507898] [2024-11-24 00:59:24,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:24,552 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:59:24,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:24,552 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:59:24,552 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:59:24,553 INFO L87 Difference]: Start difference. First operand 1087 states and 1484 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-24 00:59:24,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:24,677 INFO L93 Difference]: Finished difference Result 2016 states and 2777 transitions. [2024-11-24 00:59:24,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:59:24,678 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 92 [2024-11-24 00:59:24,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:24,685 INFO L225 Difference]: With dead ends: 2016 [2024-11-24 00:59:24,685 INFO L226 Difference]: Without dead ends: 1111 [2024-11-24 00:59:24,689 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 [2024-11-24 00:59:24,690 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 3 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:24,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 769 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:59:24,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1111 states. [2024-11-24 00:59:24,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1111 to 1111. [2024-11-24 00:59:24,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1111 states, 850 states have (on average 1.3623529411764705) internal successors, (1158), 855 states have internal predecessors, (1158), 172 states have call successors, (172), 88 states have call predecessors, (172), 88 states have return successors, (172), 167 states have call predecessors, (172), 172 states have call successors, (172) [2024-11-24 00:59:24,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1111 states to 1111 states and 1502 transitions. [2024-11-24 00:59:24,793 INFO L78 Accepts]: Start accepts. Automaton has 1111 states and 1502 transitions. Word has length 92 [2024-11-24 00:59:24,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:24,794 INFO L471 AbstractCegarLoop]: Abstraction has 1111 states and 1502 transitions. [2024-11-24 00:59:24,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 3 states have internal predecessors, (71), 2 states have call successors, (9), 3 states have call predecessors, (9), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-24 00:59:24,794 INFO L276 IsEmpty]: Start isEmpty. Operand 1111 states and 1502 transitions. [2024-11-24 00:59:24,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-24 00:59:24,795 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:24,795 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:24,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-24 00:59:24,796 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:24,798 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:24,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1748531319, now seen corresponding path program 1 times [2024-11-24 00:59:24,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:24,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1271074282] [2024-11-24 00:59:24,798 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:24,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:24,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:25,282 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:59:25,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:25,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1271074282] [2024-11-24 00:59:25,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1271074282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:59:25,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980641148] [2024-11-24 00:59:25,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:25,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:59:25,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:59:25,289 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:59:25,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:59:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:25,528 INFO L256 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-24 00:59:25,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:59:25,677 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-24 00:59:25,678 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:59:25,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980641148] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:25,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:59:25,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 15 [2024-11-24 00:59:25,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814222781] [2024-11-24 00:59:25,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:25,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-24 00:59:25,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:25,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-24 00:59:25,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-24 00:59:25,680 INFO L87 Difference]: Start difference. First operand 1111 states and 1502 transitions. Second operand has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-24 00:59:26,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:26,000 INFO L93 Difference]: Finished difference Result 2384 states and 3348 transitions. [2024-11-24 00:59:26,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-24 00:59:26,001 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 91 [2024-11-24 00:59:26,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:26,011 INFO L225 Difference]: With dead ends: 2384 [2024-11-24 00:59:26,011 INFO L226 Difference]: Without dead ends: 1543 [2024-11-24 00:59:26,014 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2024-11-24 00:59:26,016 INFO L435 NwaCegarLoop]: 442 mSDtfsCounter, 141 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 2892 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:26,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 2892 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 124 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:59:26,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1543 states. [2024-11-24 00:59:26,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1543 to 1119. [2024-11-24 00:59:26,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1119 states, 854 states have (on average 1.3536299765807962) internal successors, (1156), 861 states have internal predecessors, (1156), 174 states have call successors, (174), 90 states have call predecessors, (174), 90 states have return successors, (174), 167 states have call predecessors, (174), 174 states have call successors, (174) [2024-11-24 00:59:26,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1119 states to 1119 states and 1504 transitions. [2024-11-24 00:59:26,174 INFO L78 Accepts]: Start accepts. Automaton has 1119 states and 1504 transitions. Word has length 91 [2024-11-24 00:59:26,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:26,175 INFO L471 AbstractCegarLoop]: Abstraction has 1119 states and 1504 transitions. [2024-11-24 00:59:26,176 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2024-11-24 00:59:26,176 INFO L276 IsEmpty]: Start isEmpty. Operand 1119 states and 1504 transitions. [2024-11-24 00:59:26,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-24 00:59:26,178 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:26,178 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:26,189 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-24 00:59:26,379 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-24 00:59:26,379 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:26,380 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:26,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1775559546, now seen corresponding path program 1 times [2024-11-24 00:59:26,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:26,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1439424339] [2024-11-24 00:59:26,380 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:26,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:26,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-11-24 00:59:26,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:26,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1439424339] [2024-11-24 00:59:26,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1439424339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:26,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:26,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:59:26,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529043657] [2024-11-24 00:59:26,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:26,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:59:26,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:26,569 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:59:26,569 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:59:26,569 INFO L87 Difference]: Start difference. First operand 1119 states and 1504 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:59:26,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:26,848 INFO L93 Difference]: Finished difference Result 2023 states and 2729 transitions. [2024-11-24 00:59:26,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:59:26,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 94 [2024-11-24 00:59:26,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:26,857 INFO L225 Difference]: With dead ends: 2023 [2024-11-24 00:59:26,857 INFO L226 Difference]: Without dead ends: 1168 [2024-11-24 00:59:26,859 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:59:26,860 INFO L435 NwaCegarLoop]: 261 mSDtfsCounter, 258 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 1497 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:26,860 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 1497 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:59:26,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1168 states. [2024-11-24 00:59:26,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1168 to 1126. [2024-11-24 00:59:26,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1126 states, 872 states have (on average 1.3451834862385321) internal successors, (1173), 884 states have internal predecessors, (1173), 162 states have call successors, (162), 91 states have call predecessors, (162), 91 states have return successors, (162), 150 states have call predecessors, (162), 162 states have call successors, (162) [2024-11-24 00:59:26,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1126 states to 1126 states and 1497 transitions. [2024-11-24 00:59:26,993 INFO L78 Accepts]: Start accepts. Automaton has 1126 states and 1497 transitions. Word has length 94 [2024-11-24 00:59:26,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:26,993 INFO L471 AbstractCegarLoop]: Abstraction has 1126 states and 1497 transitions. [2024-11-24 00:59:26,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 6 states have internal predecessors, (70), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-24 00:59:26,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1126 states and 1497 transitions. [2024-11-24 00:59:26,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-24 00:59:26,997 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:26,997 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:26,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-24 00:59:26,998 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:26,998 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:26,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1057916828, now seen corresponding path program 1 times [2024-11-24 00:59:26,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:26,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52674526] [2024-11-24 00:59:26,999 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:26,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:27,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:27,662 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-24 00:59:27,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:27,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52674526] [2024-11-24 00:59:27,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [52674526] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:27,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:27,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:59:27,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825863450] [2024-11-24 00:59:27,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:27,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:59:27,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:27,664 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:59:27,664 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:59:27,665 INFO L87 Difference]: Start difference. First operand 1126 states and 1497 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 00:59:27,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:27,989 INFO L93 Difference]: Finished difference Result 2006 states and 2678 transitions. [2024-11-24 00:59:27,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 00:59:27,990 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 96 [2024-11-24 00:59:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:27,997 INFO L225 Difference]: With dead ends: 2006 [2024-11-24 00:59:27,997 INFO L226 Difference]: Without dead ends: 1124 [2024-11-24 00:59:28,000 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:59:28,000 INFO L435 NwaCegarLoop]: 291 mSDtfsCounter, 152 mSDsluCounter, 1326 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1617 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:28,001 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1617 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:59:28,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1124 states. [2024-11-24 00:59:28,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1124 to 1015. [2024-11-24 00:59:28,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1015 states, 788 states have (on average 1.3477157360406091) internal successors, (1062), 798 states have internal predecessors, (1062), 145 states have call successors, (145), 81 states have call predecessors, (145), 81 states have return successors, (145), 135 states have call predecessors, (145), 145 states have call successors, (145) [2024-11-24 00:59:28,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1015 states to 1015 states and 1352 transitions. [2024-11-24 00:59:28,095 INFO L78 Accepts]: Start accepts. Automaton has 1015 states and 1352 transitions. Word has length 96 [2024-11-24 00:59:28,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:28,096 INFO L471 AbstractCegarLoop]: Abstraction has 1015 states and 1352 transitions. [2024-11-24 00:59:28,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 00:59:28,096 INFO L276 IsEmpty]: Start isEmpty. Operand 1015 states and 1352 transitions. [2024-11-24 00:59:28,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2024-11-24 00:59:28,097 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:28,097 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:28,098 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-24 00:59:28,098 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:28,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:28,118 INFO L85 PathProgramCache]: Analyzing trace with hash 272118471, now seen corresponding path program 1 times [2024-11-24 00:59:28,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:28,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286179174] [2024-11-24 00:59:28,118 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:28,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:59:28,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:28,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286179174] [2024-11-24 00:59:28,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286179174] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:28,791 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:28,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:59:28,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322173963] [2024-11-24 00:59:28,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:28,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:59:28,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:28,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:59:28,794 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:59:28,794 INFO L87 Difference]: Start difference. First operand 1015 states and 1352 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 00:59:29,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:29,402 INFO L93 Difference]: Finished difference Result 1939 states and 2567 transitions. [2024-11-24 00:59:29,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:59:29,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 97 [2024-11-24 00:59:29,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:29,410 INFO L225 Difference]: With dead ends: 1939 [2024-11-24 00:59:29,410 INFO L226 Difference]: Without dead ends: 1088 [2024-11-24 00:59:29,413 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:59:29,413 INFO L435 NwaCegarLoop]: 286 mSDtfsCounter, 413 mSDsluCounter, 1000 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 419 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:29,414 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [419 Valid, 1286 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:59:29,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1088 states. [2024-11-24 00:59:29,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1088 to 1031. [2024-11-24 00:59:29,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1031 states, 796 states have (on average 1.3253768844221105) internal successors, (1055), 807 states have internal predecessors, (1055), 148 states have call successors, (148), 86 states have call predecessors, (148), 86 states have return successors, (148), 137 states have call predecessors, (148), 148 states have call successors, (148) [2024-11-24 00:59:29,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1031 states to 1031 states and 1351 transitions. [2024-11-24 00:59:29,533 INFO L78 Accepts]: Start accepts. Automaton has 1031 states and 1351 transitions. Word has length 97 [2024-11-24 00:59:29,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:29,534 INFO L471 AbstractCegarLoop]: Abstraction has 1031 states and 1351 transitions. [2024-11-24 00:59:29,534 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 6 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-24 00:59:29,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1031 states and 1351 transitions. [2024-11-24 00:59:29,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-24 00:59:29,536 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:29,536 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:29,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-24 00:59:29,536 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:29,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:29,537 INFO L85 PathProgramCache]: Analyzing trace with hash -1488358529, now seen corresponding path program 1 times [2024-11-24 00:59:29,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:29,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233840910] [2024-11-24 00:59:29,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:29,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:29,656 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:59:29,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:29,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233840910] [2024-11-24 00:59:29,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233840910] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:29,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:29,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:59:29,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790800989] [2024-11-24 00:59:29,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:29,659 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:59:29,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:29,659 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:59:29,659 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:59:29,659 INFO L87 Difference]: Start difference. First operand 1031 states and 1351 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:29,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:29,949 INFO L93 Difference]: Finished difference Result 2712 states and 3577 transitions. [2024-11-24 00:59:29,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:59:29,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 98 [2024-11-24 00:59:29,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:29,962 INFO L225 Difference]: With dead ends: 2712 [2024-11-24 00:59:29,963 INFO L226 Difference]: Without dead ends: 1896 [2024-11-24 00:59:29,965 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 [2024-11-24 00:59:29,966 INFO L435 NwaCegarLoop]: 472 mSDtfsCounter, 203 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 1177 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:29,966 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 1177 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:59:29,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2024-11-24 00:59:30,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1777. [2024-11-24 00:59:30,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1777 states, 1352 states have (on average 1.3187869822485208) internal successors, (1783), 1371 states have internal predecessors, (1783), 272 states have call successors, (272), 152 states have call predecessors, (272), 152 states have return successors, (272), 253 states have call predecessors, (272), 272 states have call successors, (272) [2024-11-24 00:59:30,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1777 states to 1777 states and 2327 transitions. [2024-11-24 00:59:30,151 INFO L78 Accepts]: Start accepts. Automaton has 1777 states and 2327 transitions. Word has length 98 [2024-11-24 00:59:30,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:30,152 INFO L471 AbstractCegarLoop]: Abstraction has 1777 states and 2327 transitions. [2024-11-24 00:59:30,152 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:30,152 INFO L276 IsEmpty]: Start isEmpty. Operand 1777 states and 2327 transitions. [2024-11-24 00:59:30,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-24 00:59:30,154 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:30,154 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:30,154 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-24 00:59:30,154 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:30,155 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:30,155 INFO L85 PathProgramCache]: Analyzing trace with hash -1415758364, now seen corresponding path program 1 times [2024-11-24 00:59:30,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:30,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436303667] [2024-11-24 00:59:30,155 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:30,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:30,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:30,284 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:59:30,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:30,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436303667] [2024-11-24 00:59:30,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436303667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:30,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:30,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:59:30,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938696817] [2024-11-24 00:59:30,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:30,285 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:59:30,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:30,286 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:59:30,286 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:59:30,286 INFO L87 Difference]: Start difference. First operand 1777 states and 2327 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:30,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:30,606 INFO L93 Difference]: Finished difference Result 4116 states and 5418 transitions. [2024-11-24 00:59:30,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:59:30,606 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 100 [2024-11-24 00:59:30,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:30,621 INFO L225 Difference]: With dead ends: 4116 [2024-11-24 00:59:30,622 INFO L226 Difference]: Without dead ends: 2641 [2024-11-24 00:59:30,626 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 [2024-11-24 00:59:30,627 INFO L435 NwaCegarLoop]: 490 mSDtfsCounter, 204 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:30,627 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1211 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:59:30,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2024-11-24 00:59:30,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 2520. [2024-11-24 00:59:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2520 states, 1905 states have (on average 1.3133858267716536) internal successors, (2502), 1932 states have internal predecessors, (2502), 396 states have call successors, (396), 218 states have call predecessors, (396), 218 states have return successors, (396), 369 states have call predecessors, (396), 396 states have call successors, (396) [2024-11-24 00:59:30,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2520 states to 2520 states and 3294 transitions. [2024-11-24 00:59:30,925 INFO L78 Accepts]: Start accepts. Automaton has 2520 states and 3294 transitions. Word has length 100 [2024-11-24 00:59:30,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:30,926 INFO L471 AbstractCegarLoop]: Abstraction has 2520 states and 3294 transitions. [2024-11-24 00:59:30,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:30,927 INFO L276 IsEmpty]: Start isEmpty. Operand 2520 states and 3294 transitions. [2024-11-24 00:59:30,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2024-11-24 00:59:30,929 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:30,929 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:30,930 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-24 00:59:30,930 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:30,931 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:30,931 INFO L85 PathProgramCache]: Analyzing trace with hash 534410324, now seen corresponding path program 1 times [2024-11-24 00:59:30,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:30,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39407405] [2024-11-24 00:59:30,931 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:30,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:30,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:31,675 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-24 00:59:31,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:31,675 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39407405] [2024-11-24 00:59:31,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39407405] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:31,676 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:31,676 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:59:31,676 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34489920] [2024-11-24 00:59:31,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:31,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:59:31,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:31,677 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:59:31,677 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:59:31,677 INFO L87 Difference]: Start difference. First operand 2520 states and 3294 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:32,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:32,543 INFO L93 Difference]: Finished difference Result 4901 states and 6409 transitions. [2024-11-24 00:59:32,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-24 00:59:32,547 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 100 [2024-11-24 00:59:32,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:32,566 INFO L225 Difference]: With dead ends: 4901 [2024-11-24 00:59:32,566 INFO L226 Difference]: Without dead ends: 2778 [2024-11-24 00:59:32,572 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-11-24 00:59:32,575 INFO L435 NwaCegarLoop]: 326 mSDtfsCounter, 423 mSDsluCounter, 1170 mSDsCounter, 0 mSdLazyCounter, 181 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 429 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 181 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:32,576 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [429 Valid, 1496 Invalid, 183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 181 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:59:32,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2024-11-24 00:59:32,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2527. [2024-11-24 00:59:32,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2527 states, 1901 states have (on average 1.3119410836401895) internal successors, (2494), 1929 states have internal predecessors, (2494), 403 states have call successors, (403), 222 states have call predecessors, (403), 222 states have return successors, (403), 375 states have call predecessors, (403), 403 states have call successors, (403) [2024-11-24 00:59:32,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2527 states to 2527 states and 3300 transitions. [2024-11-24 00:59:32,952 INFO L78 Accepts]: Start accepts. Automaton has 2527 states and 3300 transitions. Word has length 100 [2024-11-24 00:59:32,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:32,953 INFO L471 AbstractCegarLoop]: Abstraction has 2527 states and 3300 transitions. [2024-11-24 00:59:32,953 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:32,953 INFO L276 IsEmpty]: Start isEmpty. Operand 2527 states and 3300 transitions. [2024-11-24 00:59:32,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-11-24 00:59:32,956 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:32,956 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:32,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-24 00:59:32,956 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:32,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:32,958 INFO L85 PathProgramCache]: Analyzing trace with hash 1472031769, now seen corresponding path program 1 times [2024-11-24 00:59:32,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:32,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1477921318] [2024-11-24 00:59:32,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:32,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:32,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:33,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:59:33,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:33,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1477921318] [2024-11-24 00:59:33,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1477921318] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:33,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:33,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:59:33,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262625066] [2024-11-24 00:59:33,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:33,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:59:33,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:33,071 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:59:33,071 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:59:33,071 INFO L87 Difference]: Start difference. First operand 2527 states and 3300 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:33,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:33,650 INFO L93 Difference]: Finished difference Result 6470 states and 8489 transitions. [2024-11-24 00:59:33,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:59:33,650 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 102 [2024-11-24 00:59:33,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:33,678 INFO L225 Difference]: With dead ends: 6470 [2024-11-24 00:59:33,682 INFO L226 Difference]: Without dead ends: 4385 [2024-11-24 00:59:33,688 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-24 00:59:33,689 INFO L435 NwaCegarLoop]: 479 mSDtfsCounter, 208 mSDsluCounter, 718 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:33,690 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1197 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:59:33,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4385 states. [2024-11-24 00:59:34,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4385 to 4041. [2024-11-24 00:59:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4041 states, 3004 states have (on average 1.3005992010652463) internal successors, (3907), 3048 states have internal predecessors, (3907), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2024-11-24 00:59:34,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4041 states to 4041 states and 5251 transitions. [2024-11-24 00:59:34,355 INFO L78 Accepts]: Start accepts. Automaton has 4041 states and 5251 transitions. Word has length 102 [2024-11-24 00:59:34,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:34,356 INFO L471 AbstractCegarLoop]: Abstraction has 4041 states and 5251 transitions. [2024-11-24 00:59:34,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 3 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:34,359 INFO L276 IsEmpty]: Start isEmpty. Operand 4041 states and 5251 transitions. [2024-11-24 00:59:34,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-24 00:59:34,366 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:34,366 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:34,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-24 00:59:34,367 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:34,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:34,368 INFO L85 PathProgramCache]: Analyzing trace with hash -1614875897, now seen corresponding path program 1 times [2024-11-24 00:59:34,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:34,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807709563] [2024-11-24 00:59:34,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:34,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:34,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:34,457 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:59:34,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:34,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807709563] [2024-11-24 00:59:34,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807709563] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:34,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:34,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:59:34,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997726922] [2024-11-24 00:59:34,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:34,458 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:59:34,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:34,459 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:59:34,459 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:59:34,460 INFO L87 Difference]: Start difference. First operand 4041 states and 5251 transitions. Second operand has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:35,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:35,052 INFO L93 Difference]: Finished difference Result 7760 states and 10132 transitions. [2024-11-24 00:59:35,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:59:35,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 103 [2024-11-24 00:59:35,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:35,086 INFO L225 Difference]: With dead ends: 7760 [2024-11-24 00:59:35,086 INFO L226 Difference]: Without dead ends: 4074 [2024-11-24 00:59:35,094 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 [2024-11-24 00:59:35,095 INFO L435 NwaCegarLoop]: 264 mSDtfsCounter, 6 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 491 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:35,096 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 491 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:59:35,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4074 states. [2024-11-24 00:59:35,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4074 to 4047. [2024-11-24 00:59:35,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4047 states, 3010 states have (on average 1.3) internal successors, (3913), 3054 states have internal predecessors, (3913), 672 states have call successors, (672), 364 states have call predecessors, (672), 364 states have return successors, (672), 628 states have call predecessors, (672), 672 states have call successors, (672) [2024-11-24 00:59:35,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4047 states to 4047 states and 5257 transitions. [2024-11-24 00:59:35,547 INFO L78 Accepts]: Start accepts. Automaton has 4047 states and 5257 transitions. Word has length 103 [2024-11-24 00:59:35,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:35,548 INFO L471 AbstractCegarLoop]: Abstraction has 4047 states and 5257 transitions. [2024-11-24 00:59:35,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.333333333333332) internal successors, (79), 3 states have internal predecessors, (79), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:35,548 INFO L276 IsEmpty]: Start isEmpty. Operand 4047 states and 5257 transitions. [2024-11-24 00:59:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-24 00:59:35,550 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:35,551 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:35,551 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-24 00:59:35,551 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:35,551 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:35,552 INFO L85 PathProgramCache]: Analyzing trace with hash 1907577092, now seen corresponding path program 1 times [2024-11-24 00:59:35,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:35,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464157335] [2024-11-24 00:59:35,552 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:35,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:35,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:35,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:59:35,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:35,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464157335] [2024-11-24 00:59:35,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464157335] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:35,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:35,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:59:35,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395967241] [2024-11-24 00:59:35,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:35,726 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:59:35,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:35,727 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:59:35,727 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:59:35,727 INFO L87 Difference]: Start difference. First operand 4047 states and 5257 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:36,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:36,155 INFO L93 Difference]: Finished difference Result 7725 states and 10059 transitions. [2024-11-24 00:59:36,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:59:36,155 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 104 [2024-11-24 00:59:36,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:36,182 INFO L225 Difference]: With dead ends: 7725 [2024-11-24 00:59:36,182 INFO L226 Difference]: Without dead ends: 3755 [2024-11-24 00:59:36,192 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 [2024-11-24 00:59:36,192 INFO L435 NwaCegarLoop]: 268 mSDtfsCounter, 83 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:36,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 752 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:59:36,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3755 states. [2024-11-24 00:59:36,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3755 to 3692. [2024-11-24 00:59:36,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3692 states, 2738 states have (on average 1.3093498904309715) internal successors, (3585), 2772 states have internal predecessors, (3585), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2024-11-24 00:59:36,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3692 states to 3692 states and 4825 transitions. [2024-11-24 00:59:36,652 INFO L78 Accepts]: Start accepts. Automaton has 3692 states and 4825 transitions. Word has length 104 [2024-11-24 00:59:36,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:36,653 INFO L471 AbstractCegarLoop]: Abstraction has 3692 states and 4825 transitions. [2024-11-24 00:59:36,653 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:36,653 INFO L276 IsEmpty]: Start isEmpty. Operand 3692 states and 4825 transitions. [2024-11-24 00:59:36,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:59:36,655 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:36,656 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:36,657 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-24 00:59:36,657 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:36,658 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:36,658 INFO L85 PathProgramCache]: Analyzing trace with hash 540150455, now seen corresponding path program 1 times [2024-11-24 00:59:36,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:36,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912840094] [2024-11-24 00:59:36,658 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:36,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:59:36,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:36,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912840094] [2024-11-24 00:59:36,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912840094] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:36,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:36,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:59:36,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024106445] [2024-11-24 00:59:36,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:36,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:59:36,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:36,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:59:36,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:59:36,734 INFO L87 Difference]: Start difference. First operand 3692 states and 4825 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:37,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:37,234 INFO L93 Difference]: Finished difference Result 7212 states and 9458 transitions. [2024-11-24 00:59:37,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:59:37,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 105 [2024-11-24 00:59:37,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:37,261 INFO L225 Difference]: With dead ends: 7212 [2024-11-24 00:59:37,261 INFO L226 Difference]: Without dead ends: 3702 [2024-11-24 00:59:37,271 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 [2024-11-24 00:59:37,272 INFO L435 NwaCegarLoop]: 262 mSDtfsCounter, 0 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 489 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:37,273 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 489 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:59:37,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3702 states. [2024-11-24 00:59:37,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3702 to 3702. [2024-11-24 00:59:37,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3702 states, 2748 states have (on average 1.3082241630276565) internal successors, (3595), 2782 states have internal predecessors, (3595), 620 states have call successors, (620), 333 states have call predecessors, (620), 333 states have return successors, (620), 586 states have call predecessors, (620), 620 states have call successors, (620) [2024-11-24 00:59:37,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3702 states to 3702 states and 4835 transitions. [2024-11-24 00:59:37,917 INFO L78 Accepts]: Start accepts. Automaton has 3702 states and 4835 transitions. Word has length 105 [2024-11-24 00:59:37,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:37,918 INFO L471 AbstractCegarLoop]: Abstraction has 3702 states and 4835 transitions. [2024-11-24 00:59:37,918 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:37,918 INFO L276 IsEmpty]: Start isEmpty. Operand 3702 states and 4835 transitions. [2024-11-24 00:59:37,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-11-24 00:59:37,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:37,921 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:37,921 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-24 00:59:37,922 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:37,923 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:37,923 INFO L85 PathProgramCache]: Analyzing trace with hash 594512028, now seen corresponding path program 1 times [2024-11-24 00:59:37,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:37,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234268233] [2024-11-24 00:59:37,923 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:37,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:37,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-24 00:59:38,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:38,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234268233] [2024-11-24 00:59:38,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234268233] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:38,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:38,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-24 00:59:38,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089632195] [2024-11-24 00:59:38,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:38,118 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-24 00:59:38,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:38,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-24 00:59:38,119 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-24 00:59:38,120 INFO L87 Difference]: Start difference. First operand 3702 states and 4835 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:38,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:38,549 INFO L93 Difference]: Finished difference Result 7204 states and 9430 transitions. [2024-11-24 00:59:38,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-24 00:59:38,549 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 105 [2024-11-24 00:59:38,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:38,568 INFO L225 Difference]: With dead ends: 7204 [2024-11-24 00:59:38,568 INFO L226 Difference]: Without dead ends: 3622 [2024-11-24 00:59:38,576 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 [2024-11-24 00:59:38,577 INFO L435 NwaCegarLoop]: 273 mSDtfsCounter, 64 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 762 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:38,577 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 762 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:59:38,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3622 states. [2024-11-24 00:59:38,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3622 to 2788. [2024-11-24 00:59:38,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2788 states, 2068 states have (on average 1.303191489361702) internal successors, (2695), 2087 states have internal predecessors, (2695), 469 states have call successors, (469), 250 states have call predecessors, (469), 250 states have return successors, (469), 450 states have call predecessors, (469), 469 states have call successors, (469) [2024-11-24 00:59:38,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2788 states to 2788 states and 3633 transitions. [2024-11-24 00:59:38,911 INFO L78 Accepts]: Start accepts. Automaton has 2788 states and 3633 transitions. Word has length 105 [2024-11-24 00:59:38,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:38,911 INFO L471 AbstractCegarLoop]: Abstraction has 2788 states and 3633 transitions. [2024-11-24 00:59:38,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-24 00:59:38,911 INFO L276 IsEmpty]: Start isEmpty. Operand 2788 states and 3633 transitions. [2024-11-24 00:59:38,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2024-11-24 00:59:38,916 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:38,917 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:38,917 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-24 00:59:38,917 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:38,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:38,918 INFO L85 PathProgramCache]: Analyzing trace with hash 2045136114, now seen corresponding path program 1 times [2024-11-24 00:59:38,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:38,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114761902] [2024-11-24 00:59:38,918 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:38,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:38,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:39,313 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 00:59:39,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:39,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114761902] [2024-11-24 00:59:39,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114761902] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:59:39,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520399363] [2024-11-24 00:59:39,314 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:39,314 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:59:39,314 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:59:39,316 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:59:39,319 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:59:39,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:39,609 INFO L256 TraceCheckSpWp]: Trace formula consists of 734 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-24 00:59:39,615 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:59:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-24 00:59:39,673 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-24 00:59:39,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520399363] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:39,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-24 00:59:39,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2024-11-24 00:59:39,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056906063] [2024-11-24 00:59:39,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:39,674 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-24 00:59:39,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:39,675 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-24 00:59:39,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:59:39,675 INFO L87 Difference]: Start difference. First operand 2788 states and 3633 transitions. Second operand has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-24 00:59:39,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:39,988 INFO L93 Difference]: Finished difference Result 5245 states and 6876 transitions. [2024-11-24 00:59:39,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-24 00:59:39,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) Word has length 156 [2024-11-24 00:59:39,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:40,005 INFO L225 Difference]: With dead ends: 5245 [2024-11-24 00:59:40,005 INFO L226 Difference]: Without dead ends: 2617 [2024-11-24 00:59:40,012 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-24 00:59:40,013 INFO L435 NwaCegarLoop]: 260 mSDtfsCounter, 0 mSDsluCounter, 768 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:40,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1028 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-24 00:59:40,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2617 states. [2024-11-24 00:59:40,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2617 to 2600. [2024-11-24 00:59:40,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2600 states, 1925 states have (on average 1.2997402597402596) internal successors, (2502), 1942 states have internal predecessors, (2502), 440 states have call successors, (440), 234 states have call predecessors, (440), 234 states have return successors, (440), 423 states have call predecessors, (440), 440 states have call successors, (440) [2024-11-24 00:59:40,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2600 states to 2600 states and 3382 transitions. [2024-11-24 00:59:40,313 INFO L78 Accepts]: Start accepts. Automaton has 2600 states and 3382 transitions. Word has length 156 [2024-11-24 00:59:40,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:40,314 INFO L471 AbstractCegarLoop]: Abstraction has 2600 states and 3382 transitions. [2024-11-24 00:59:40,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 24.75) internal successors, (99), 5 states have internal predecessors, (99), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (13), 2 states have call predecessors, (13), 3 states have call successors, (13) [2024-11-24 00:59:40,314 INFO L276 IsEmpty]: Start isEmpty. Operand 2600 states and 3382 transitions. [2024-11-24 00:59:40,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2024-11-24 00:59:40,319 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:40,320 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 00:59:40,330 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:59:40,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:59:40,521 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:40,522 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:40,522 INFO L85 PathProgramCache]: Analyzing trace with hash -364480390, now seen corresponding path program 1 times [2024-11-24 00:59:40,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:40,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468296081] [2024-11-24 00:59:40,523 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:40,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:40,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 00:59:41,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:41,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468296081] [2024-11-24 00:59:41,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468296081] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:59:41,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447164388] [2024-11-24 00:59:41,406 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:41,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:59:41,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:59:41,409 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:59:41,413 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:59:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:41,716 INFO L256 TraceCheckSpWp]: Trace formula consists of 768 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-24 00:59:41,725 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:59:42,154 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 44 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:59:42,154 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:59:42,642 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 13 proven. 17 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 00:59:42,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447164388] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:59:42,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:59:42,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 8] total 24 [2024-11-24 00:59:42,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108094148] [2024-11-24 00:59:42,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:59:42,645 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-24 00:59:42,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:42,646 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-24 00:59:42,646 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=487, Unknown=0, NotChecked=0, Total=552 [2024-11-24 00:59:42,646 INFO L87 Difference]: Start difference. First operand 2600 states and 3382 transitions. Second operand has 24 states, 24 states have (on average 11.166666666666666) internal successors, (268), 22 states have internal predecessors, (268), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-11-24 00:59:49,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:49,393 INFO L93 Difference]: Finished difference Result 7598 states and 9916 transitions. [2024-11-24 00:59:49,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2024-11-24 00:59:49,393 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 11.166666666666666) internal successors, (268), 22 states have internal predecessors, (268), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) Word has length 158 [2024-11-24 00:59:49,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:49,421 INFO L225 Difference]: With dead ends: 7598 [2024-11-24 00:59:49,421 INFO L226 Difference]: Without dead ends: 5241 [2024-11-24 00:59:49,429 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 332 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1798 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=1040, Invalid=6100, Unknown=0, NotChecked=0, Total=7140 [2024-11-24 00:59:49,430 INFO L435 NwaCegarLoop]: 659 mSDtfsCounter, 2810 mSDsluCounter, 5807 mSDsCounter, 0 mSdLazyCounter, 2967 mSolverCounterSat, 1021 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2810 SdHoareTripleChecker+Valid, 6466 SdHoareTripleChecker+Invalid, 3988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1021 IncrementalHoareTripleChecker+Valid, 2967 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:49,430 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2810 Valid, 6466 Invalid, 3988 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1021 Valid, 2967 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-11-24 00:59:49,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5241 states. [2024-11-24 00:59:50,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5241 to 4547. [2024-11-24 00:59:50,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4547 states, 3367 states have (on average 1.3035343035343034) internal successors, (4389), 3396 states have internal predecessors, (4389), 765 states have call successors, (765), 414 states have call predecessors, (765), 414 states have return successors, (765), 736 states have call predecessors, (765), 765 states have call successors, (765) [2024-11-24 00:59:50,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4547 states to 4547 states and 5919 transitions. [2024-11-24 00:59:50,162 INFO L78 Accepts]: Start accepts. Automaton has 4547 states and 5919 transitions. Word has length 158 [2024-11-24 00:59:50,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:50,162 INFO L471 AbstractCegarLoop]: Abstraction has 4547 states and 5919 transitions. [2024-11-24 00:59:50,163 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 11.166666666666666) internal successors, (268), 22 states have internal predecessors, (268), 9 states have call successors, (41), 4 states have call predecessors, (41), 7 states have return successors, (40), 11 states have call predecessors, (40), 9 states have call successors, (40) [2024-11-24 00:59:50,163 INFO L276 IsEmpty]: Start isEmpty. Operand 4547 states and 5919 transitions. [2024-11-24 00:59:50,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2024-11-24 00:59:50,170 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:50,171 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:59:50,181 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:59:50,371 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-11-24 00:59:50,372 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:50,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:50,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1983812197, now seen corresponding path program 1 times [2024-11-24 00:59:50,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:50,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342580046] [2024-11-24 00:59:50,373 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:50,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:50,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 00:59:51,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:51,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342580046] [2024-11-24 00:59:51,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342580046] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:59:51,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1391277828] [2024-11-24 00:59:51,299 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:51,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:59:51,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:59:51,301 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:59:51,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:59:51,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:51,646 INFO L256 TraceCheckSpWp]: Trace formula consists of 769 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-24 00:59:51,651 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:59:52,420 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 61 proven. 14 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 00:59:52,422 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:59:53,262 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 00:59:53,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1391277828] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:59:53,262 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:59:53,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 11] total 26 [2024-11-24 00:59:53,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876830516] [2024-11-24 00:59:53,263 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:59:53,263 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-24 00:59:53,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:53,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-24 00:59:53,265 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=542, Unknown=0, NotChecked=0, Total=650 [2024-11-24 00:59:53,265 INFO L87 Difference]: Start difference. First operand 4547 states and 5919 transitions. Second operand has 26 states, 26 states have (on average 9.807692307692308) internal successors, (255), 26 states have internal predecessors, (255), 10 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) [2024-11-24 00:59:57,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:59:57,101 INFO L93 Difference]: Finished difference Result 10450 states and 13599 transitions. [2024-11-24 00:59:57,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-24 00:59:57,101 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 9.807692307692308) internal successors, (255), 26 states have internal predecessors, (255), 10 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) Word has length 159 [2024-11-24 00:59:57,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:59:57,131 INFO L225 Difference]: With dead ends: 10450 [2024-11-24 00:59:57,132 INFO L226 Difference]: Without dead ends: 6157 [2024-11-24 00:59:57,142 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 379 GetRequests, 317 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1117 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=874, Invalid=3158, Unknown=0, NotChecked=0, Total=4032 [2024-11-24 00:59:57,143 INFO L435 NwaCegarLoop]: 318 mSDtfsCounter, 2098 mSDsluCounter, 3350 mSDsCounter, 0 mSdLazyCounter, 1876 mSolverCounterSat, 666 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2098 SdHoareTripleChecker+Valid, 3668 SdHoareTripleChecker+Invalid, 2542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 666 IncrementalHoareTripleChecker+Valid, 1876 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-24 00:59:57,143 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2098 Valid, 3668 Invalid, 2542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [666 Valid, 1876 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-24 00:59:57,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6157 states. [2024-11-24 00:59:58,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6157 to 5943. [2024-11-24 00:59:58,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5943 states, 4392 states have (on average 1.2962204007285973) internal successors, (5693), 4431 states have internal predecessors, (5693), 999 states have call successors, (999), 551 states have call predecessors, (999), 551 states have return successors, (999), 960 states have call predecessors, (999), 999 states have call successors, (999) [2024-11-24 00:59:58,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5943 states to 5943 states and 7691 transitions. [2024-11-24 00:59:58,267 INFO L78 Accepts]: Start accepts. Automaton has 5943 states and 7691 transitions. Word has length 159 [2024-11-24 00:59:58,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:59:58,269 INFO L471 AbstractCegarLoop]: Abstraction has 5943 states and 7691 transitions. [2024-11-24 00:59:58,269 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 9.807692307692308) internal successors, (255), 26 states have internal predecessors, (255), 10 states have call successors, (38), 5 states have call predecessors, (38), 6 states have return successors, (37), 10 states have call predecessors, (37), 10 states have call successors, (37) [2024-11-24 00:59:58,269 INFO L276 IsEmpty]: Start isEmpty. Operand 5943 states and 7691 transitions. [2024-11-24 00:59:58,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 00:59:58,280 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:59:58,281 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 00:59:58,293 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:59:58,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:59:58,484 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:59:58,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:59:58,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1810657676, now seen corresponding path program 1 times [2024-11-24 00:59:58,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:59:58,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2095486136] [2024-11-24 00:59:58,485 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:59:58,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:59:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:59:58,734 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2024-11-24 00:59:58,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:59:58,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2095486136] [2024-11-24 00:59:58,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2095486136] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:59:58,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:59:58,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-24 00:59:58,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1473511175] [2024-11-24 00:59:58,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:59:58,735 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:59:58,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:59:58,736 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:59:58,736 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:59:58,736 INFO L87 Difference]: Start difference. First operand 5943 states and 7691 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 01:00:00,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:00,698 INFO L93 Difference]: Finished difference Result 17413 states and 22597 transitions. [2024-11-24 01:00:00,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-24 01:00:00,699 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 161 [2024-11-24 01:00:00,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:00,760 INFO L225 Difference]: With dead ends: 17413 [2024-11-24 01:00:00,760 INFO L226 Difference]: Without dead ends: 11776 [2024-11-24 01:00:00,771 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-11-24 01:00:00,772 INFO L435 NwaCegarLoop]: 489 mSDtfsCounter, 225 mSDsluCounter, 2106 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 2595 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:00,772 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 2595 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 01:00:00,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11776 states. [2024-11-24 01:00:02,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11776 to 8427. [2024-11-24 01:00:02,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8427 states, 6180 states have (on average 1.2944983818770226) internal successors, (8000), 6237 states have internal predecessors, (8000), 1463 states have call successors, (1463), 783 states have call predecessors, (1463), 783 states have return successors, (1463), 1406 states have call predecessors, (1463), 1463 states have call successors, (1463) [2024-11-24 01:00:02,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8427 states to 8427 states and 10926 transitions. [2024-11-24 01:00:02,222 INFO L78 Accepts]: Start accepts. Automaton has 8427 states and 10926 transitions. Word has length 161 [2024-11-24 01:00:02,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:02,223 INFO L471 AbstractCegarLoop]: Abstraction has 8427 states and 10926 transitions. [2024-11-24 01:00:02,223 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2024-11-24 01:00:02,223 INFO L276 IsEmpty]: Start isEmpty. Operand 8427 states and 10926 transitions. [2024-11-24 01:00:02,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2024-11-24 01:00:02,237 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:02,237 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:00:02,237 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-11-24 01:00:02,238 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:02,238 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:02,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1459390940, now seen corresponding path program 1 times [2024-11-24 01:00:02,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:02,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85941086] [2024-11-24 01:00:02,239 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:02,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:02,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:03,322 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 01:00:03,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:03,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85941086] [2024-11-24 01:00:03,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85941086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:00:03,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [72384475] [2024-11-24 01:00:03,323 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:03,323 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:00:03,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:00:03,326 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:00:03,398 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-24 01:00:03,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:03,690 INFO L256 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-24 01:00:03,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:00:04,302 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 59 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 01:00:04,302 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:00:05,555 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 01:00:05,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [72384475] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:00:05,556 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:00:05,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 10] total 27 [2024-11-24 01:00:05,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432534740] [2024-11-24 01:00:05,556 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:00:05,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-24 01:00:05,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:05,558 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-24 01:00:05,558 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=590, Unknown=0, NotChecked=0, Total=702 [2024-11-24 01:00:05,559 INFO L87 Difference]: Start difference. First operand 8427 states and 10926 transitions. Second operand has 27 states, 27 states have (on average 8.962962962962964) internal successors, (242), 27 states have internal predecessors, (242), 8 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2024-11-24 01:00:08,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:08,608 INFO L93 Difference]: Finished difference Result 17251 states and 22421 transitions. [2024-11-24 01:00:08,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-24 01:00:08,609 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 8.962962962962964) internal successors, (242), 27 states have internal predecessors, (242), 8 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 161 [2024-11-24 01:00:08,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:08,725 INFO L225 Difference]: With dead ends: 17251 [2024-11-24 01:00:08,725 INFO L226 Difference]: Without dead ends: 9130 [2024-11-24 01:00:08,737 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 311 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 355 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=315, Invalid=1491, Unknown=0, NotChecked=0, Total=1806 [2024-11-24 01:00:08,738 INFO L435 NwaCegarLoop]: 468 mSDtfsCounter, 934 mSDsluCounter, 4135 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 228 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 934 SdHoareTripleChecker+Valid, 4603 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 228 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:08,738 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [934 Valid, 4603 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [228 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-24 01:00:08,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9130 states. [2024-11-24 01:00:10,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9130 to 8821. [2024-11-24 01:00:10,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8821 states, 6477 states have (on average 1.293808862127528) internal successors, (8380), 6537 states have internal predecessors, (8380), 1526 states have call successors, (1526), 817 states have call predecessors, (1526), 817 states have return successors, (1526), 1466 states have call predecessors, (1526), 1526 states have call successors, (1526) [2024-11-24 01:00:10,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8821 states to 8821 states and 11432 transitions. [2024-11-24 01:00:10,605 INFO L78 Accepts]: Start accepts. Automaton has 8821 states and 11432 transitions. Word has length 161 [2024-11-24 01:00:10,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:10,606 INFO L471 AbstractCegarLoop]: Abstraction has 8821 states and 11432 transitions. [2024-11-24 01:00:10,606 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 8.962962962962964) internal successors, (242), 27 states have internal predecessors, (242), 8 states have call successors, (30), 5 states have call predecessors, (30), 6 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2024-11-24 01:00:10,606 INFO L276 IsEmpty]: Start isEmpty. Operand 8821 states and 11432 transitions. [2024-11-24 01:00:10,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2024-11-24 01:00:10,619 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:10,619 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:00:10,641 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-24 01:00:10,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:00:10,823 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:10,824 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:10,824 INFO L85 PathProgramCache]: Analyzing trace with hash -958161478, now seen corresponding path program 1 times [2024-11-24 01:00:10,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:10,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769606896] [2024-11-24 01:00:10,824 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:10,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:11,721 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 28 proven. 4 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2024-11-24 01:00:11,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:11,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769606896] [2024-11-24 01:00:11,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769606896] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:00:11,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88752781] [2024-11-24 01:00:11,721 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:11,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:00:11,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:00:11,725 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:00:11,729 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-24 01:00:12,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:12,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 787 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-24 01:00:12,008 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:00:12,516 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 66 proven. 11 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 01:00:12,516 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:00:13,183 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2024-11-24 01:00:13,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88752781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:00:13,184 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:00:13,184 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 23 [2024-11-24 01:00:13,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9453233] [2024-11-24 01:00:13,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:00:13,185 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-24 01:00:13,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:13,185 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-24 01:00:13,186 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=428, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:00:13,186 INFO L87 Difference]: Start difference. First operand 8821 states and 11432 transitions. Second operand has 23 states, 22 states have (on average 12.227272727272727) internal successors, (269), 21 states have internal predecessors, (269), 9 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 10 states have call predecessors, (36), 9 states have call successors, (36) [2024-11-24 01:00:20,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:20,320 INFO L93 Difference]: Finished difference Result 31760 states and 41033 transitions. [2024-11-24 01:00:20,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-24 01:00:20,321 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 12.227272727272727) internal successors, (269), 21 states have internal predecessors, (269), 9 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 10 states have call predecessors, (36), 9 states have call successors, (36) Word has length 162 [2024-11-24 01:00:20,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:20,552 INFO L225 Difference]: With dead ends: 31760 [2024-11-24 01:00:20,552 INFO L226 Difference]: Without dead ends: 23218 [2024-11-24 01:00:20,589 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 397 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1368 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=710, Invalid=4260, Unknown=0, NotChecked=0, Total=4970 [2024-11-24 01:00:20,595 INFO L435 NwaCegarLoop]: 453 mSDtfsCounter, 3088 mSDsluCounter, 4447 mSDsCounter, 0 mSdLazyCounter, 2378 mSolverCounterSat, 999 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3096 SdHoareTripleChecker+Valid, 4900 SdHoareTripleChecker+Invalid, 3377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 999 IncrementalHoareTripleChecker+Valid, 2378 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:20,595 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3096 Valid, 4900 Invalid, 3377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [999 Valid, 2378 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-24 01:00:20,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23218 states. [2024-11-24 01:00:25,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23218 to 14617. [2024-11-24 01:00:25,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14617 states, 10685 states have (on average 1.296771174543753) internal successors, (13856), 10797 states have internal predecessors, (13856), 2546 states have call successors, (2546), 1385 states have call predecessors, (2546), 1385 states have return successors, (2546), 2434 states have call predecessors, (2546), 2546 states have call successors, (2546) [2024-11-24 01:00:25,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14617 states to 14617 states and 18948 transitions. [2024-11-24 01:00:25,414 INFO L78 Accepts]: Start accepts. Automaton has 14617 states and 18948 transitions. Word has length 162 [2024-11-24 01:00:25,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:25,415 INFO L471 AbstractCegarLoop]: Abstraction has 14617 states and 18948 transitions. [2024-11-24 01:00:25,416 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 12.227272727272727) internal successors, (269), 21 states have internal predecessors, (269), 9 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 10 states have call predecessors, (36), 9 states have call successors, (36) [2024-11-24 01:00:25,416 INFO L276 IsEmpty]: Start isEmpty. Operand 14617 states and 18948 transitions. [2024-11-24 01:00:25,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-24 01:00:25,446 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:25,446 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 01:00:25,459 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-24 01:00:25,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:00:25,652 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:25,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:25,653 INFO L85 PathProgramCache]: Analyzing trace with hash 334524777, now seen corresponding path program 1 times [2024-11-24 01:00:25,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:25,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192815553] [2024-11-24 01:00:25,653 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:25,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:26,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:27,035 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-24 01:00:27,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:27,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192815553] [2024-11-24 01:00:27,038 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1192815553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:00:27,038 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1471904854] [2024-11-24 01:00:27,038 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:27,038 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:00:27,038 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:00:27,042 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:00:27,045 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-24 01:00:27,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:27,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 793 conjuncts, 36 conjuncts are in the unsatisfiable core [2024-11-24 01:00:27,373 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:00:28,033 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 60 proven. 25 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-24 01:00:28,034 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:00:28,791 INFO L134 CoverageAnalysis]: Checked inductivity of 94 backedges. 16 proven. 17 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-24 01:00:28,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1471904854] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:00:28,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:00:28,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 23 [2024-11-24 01:00:28,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927518729] [2024-11-24 01:00:28,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:00:28,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-24 01:00:28,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:28,798 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-24 01:00:28,798 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2024-11-24 01:00:28,799 INFO L87 Difference]: Start difference. First operand 14617 states and 18948 transitions. Second operand has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 22 states have internal predecessors, (283), 9 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (41), 10 states have call predecessors, (41), 9 states have call successors, (41) [2024-11-24 01:00:41,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:41,304 INFO L93 Difference]: Finished difference Result 37046 states and 48231 transitions. [2024-11-24 01:00:41,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-24 01:00:41,305 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 22 states have internal predecessors, (283), 9 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (41), 10 states have call predecessors, (41), 9 states have call successors, (41) Word has length 171 [2024-11-24 01:00:41,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:41,423 INFO L225 Difference]: With dead ends: 37046 [2024-11-24 01:00:41,423 INFO L226 Difference]: Without dead ends: 22749 [2024-11-24 01:00:41,460 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 519 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 144 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8002 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=2714, Invalid=18456, Unknown=0, NotChecked=0, Total=21170 [2024-11-24 01:00:41,461 INFO L435 NwaCegarLoop]: 382 mSDtfsCounter, 3737 mSDsluCounter, 4045 mSDsCounter, 0 mSdLazyCounter, 2303 mSolverCounterSat, 1070 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3737 SdHoareTripleChecker+Valid, 4427 SdHoareTripleChecker+Invalid, 3373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1070 IncrementalHoareTripleChecker+Valid, 2303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:41,462 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [3737 Valid, 4427 Invalid, 3373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1070 Valid, 2303 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2024-11-24 01:00:41,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22749 states. [2024-11-24 01:00:46,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22749 to 21444. [2024-11-24 01:00:46,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21444 states, 15755 states have (on average 1.3002856236115519) internal successors, (20486), 15914 states have internal predecessors, (20486), 3670 states have call successors, (3670), 2018 states have call predecessors, (3670), 2018 states have return successors, (3670), 3511 states have call predecessors, (3670), 3670 states have call successors, (3670) [2024-11-24 01:00:46,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21444 states to 21444 states and 27826 transitions. [2024-11-24 01:00:46,442 INFO L78 Accepts]: Start accepts. Automaton has 21444 states and 27826 transitions. Word has length 171 [2024-11-24 01:00:46,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:00:46,442 INFO L471 AbstractCegarLoop]: Abstraction has 21444 states and 27826 transitions. [2024-11-24 01:00:46,442 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 12.304347826086957) internal successors, (283), 22 states have internal predecessors, (283), 9 states have call successors, (41), 5 states have call predecessors, (41), 6 states have return successors, (41), 10 states have call predecessors, (41), 9 states have call successors, (41) [2024-11-24 01:00:46,443 INFO L276 IsEmpty]: Start isEmpty. Operand 21444 states and 27826 transitions. [2024-11-24 01:00:46,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2024-11-24 01:00:46,459 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:00:46,459 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 01:00:46,471 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-24 01:00:46,663 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:00:46,664 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:00:46,665 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:00:46,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1352529230, now seen corresponding path program 1 times [2024-11-24 01:00:46,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:00:46,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652030837] [2024-11-24 01:00:46,665 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:46,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:00:46,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-24 01:00:48,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:00:48,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652030837] [2024-11-24 01:00:48,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652030837] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:00:48,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552419538] [2024-11-24 01:00:48,322 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:00:48,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:00:48,323 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:00:48,324 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:00:48,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-24 01:00:48,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:00:48,653 INFO L256 TraceCheckSpWp]: Trace formula consists of 791 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-24 01:00:48,659 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:00:48,823 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 52 proven. 4 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2024-11-24 01:00:48,823 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:00:48,984 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-11-24 01:00:48,984 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552419538] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:00:48,984 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:00:48,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 15 [2024-11-24 01:00:48,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82521646] [2024-11-24 01:00:48,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:00:48,986 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-24 01:00:48,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:00:48,986 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-24 01:00:48,987 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2024-11-24 01:00:48,987 INFO L87 Difference]: Start difference. First operand 21444 states and 27826 transitions. Second operand has 15 states, 15 states have (on average 13.866666666666667) internal successors, (208), 14 states have internal predecessors, (208), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2024-11-24 01:00:55,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:00:55,384 INFO L93 Difference]: Finished difference Result 43794 states and 56753 transitions. [2024-11-24 01:00:55,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-24 01:00:55,385 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 13.866666666666667) internal successors, (208), 14 states have internal predecessors, (208), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) Word has length 171 [2024-11-24 01:00:55,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:00:55,495 INFO L225 Difference]: With dead ends: 43794 [2024-11-24 01:00:55,496 INFO L226 Difference]: Without dead ends: 22565 [2024-11-24 01:00:55,531 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 348 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 318 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=249, Invalid=1311, Unknown=0, NotChecked=0, Total=1560 [2024-11-24 01:00:55,531 INFO L435 NwaCegarLoop]: 365 mSDtfsCounter, 1303 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 842 mSolverCounterSat, 483 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1303 SdHoareTripleChecker+Valid, 3183 SdHoareTripleChecker+Invalid, 1325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 483 IncrementalHoareTripleChecker+Valid, 842 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-24 01:00:55,532 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1303 Valid, 3183 Invalid, 1325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [483 Valid, 842 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-24 01:00:55,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22565 states. [2024-11-24 01:01:00,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22565 to 22147. [2024-11-24 01:01:00,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22147 states, 16282 states have (on average 1.2995332268763051) internal successors, (21159), 16446 states have internal predecessors, (21159), 3781 states have call successors, (3781), 2083 states have call predecessors, (3781), 2083 states have return successors, (3781), 3617 states have call predecessors, (3781), 3781 states have call successors, (3781) [2024-11-24 01:01:00,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22147 states to 22147 states and 28721 transitions. [2024-11-24 01:01:00,676 INFO L78 Accepts]: Start accepts. Automaton has 22147 states and 28721 transitions. Word has length 171 [2024-11-24 01:01:00,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:01:00,676 INFO L471 AbstractCegarLoop]: Abstraction has 22147 states and 28721 transitions. [2024-11-24 01:01:00,676 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 13.866666666666667) internal successors, (208), 14 states have internal predecessors, (208), 6 states have call successors, (37), 4 states have call predecessors, (37), 6 states have return successors, (37), 7 states have call predecessors, (37), 6 states have call successors, (37) [2024-11-24 01:01:00,676 INFO L276 IsEmpty]: Start isEmpty. Operand 22147 states and 28721 transitions. [2024-11-24 01:01:00,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-24 01:01:00,687 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:01:00,687 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 01:01:00,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-24 01:01:00,887 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:01:00,888 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:01:00,888 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:01:00,888 INFO L85 PathProgramCache]: Analyzing trace with hash -1832071165, now seen corresponding path program 1 times [2024-11-24 01:01:00,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:01:00,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732152276] [2024-11-24 01:01:00,889 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:01:00,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:01:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:01:01,795 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-24 01:01:01,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:01:01,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732152276] [2024-11-24 01:01:01,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732152276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:01:01,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1824790553] [2024-11-24 01:01:01,796 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:01:01,796 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:01:01,796 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:01:01,799 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:01:01,802 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-24 01:01:02,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:01:02,142 INFO L256 TraceCheckSpWp]: Trace formula consists of 825 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-24 01:01:02,148 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:01:02,798 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 76 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 01:01:02,798 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:01:03,604 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 23 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-24 01:01:03,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1824790553] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:01:03,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:01:03,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 22 [2024-11-24 01:01:03,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368081805] [2024-11-24 01:01:03,605 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:01:03,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-24 01:01:03,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:01:03,607 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-24 01:01:03,607 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2024-11-24 01:01:03,607 INFO L87 Difference]: Start difference. First operand 22147 states and 28721 transitions. Second operand has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 21 states have internal predecessors, (255), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (34), 9 states have call predecessors, (34), 8 states have call successors, (34) [2024-11-24 01:01:09,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:01:09,532 INFO L93 Difference]: Finished difference Result 43999 states and 57130 transitions. [2024-11-24 01:01:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-11-24 01:01:09,533 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 21 states have internal predecessors, (255), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (34), 9 states have call predecessors, (34), 8 states have call successors, (34) Word has length 179 [2024-11-24 01:01:09,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:01:09,647 INFO L225 Difference]: With dead ends: 43999 [2024-11-24 01:01:09,647 INFO L226 Difference]: Without dead ends: 22172 [2024-11-24 01:01:09,692 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 398 GetRequests, 356 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=402, Invalid=1490, Unknown=0, NotChecked=0, Total=1892 [2024-11-24 01:01:09,693 INFO L435 NwaCegarLoop]: 366 mSDtfsCounter, 1401 mSDsluCounter, 2907 mSDsCounter, 0 mSdLazyCounter, 1667 mSolverCounterSat, 344 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 3273 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 344 IncrementalHoareTripleChecker+Valid, 1667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-24 01:01:09,693 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 3273 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [344 Valid, 1667 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-24 01:01:09,710 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22172 states. [2024-11-24 01:01:13,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22172 to 22080. [2024-11-24 01:01:13,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22080 states, 16225 states have (on average 1.2989830508474576) internal successors, (21076), 16389 states have internal predecessors, (21076), 3776 states have call successors, (3776), 2078 states have call predecessors, (3776), 2078 states have return successors, (3776), 3612 states have call predecessors, (3776), 3776 states have call successors, (3776) [2024-11-24 01:01:14,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22080 states to 22080 states and 28628 transitions. [2024-11-24 01:01:14,057 INFO L78 Accepts]: Start accepts. Automaton has 22080 states and 28628 transitions. Word has length 179 [2024-11-24 01:01:14,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 01:01:14,058 INFO L471 AbstractCegarLoop]: Abstraction has 22080 states and 28628 transitions. [2024-11-24 01:01:14,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 11.590909090909092) internal successors, (255), 21 states have internal predecessors, (255), 8 states have call successors, (34), 5 states have call predecessors, (34), 6 states have return successors, (34), 9 states have call predecessors, (34), 8 states have call successors, (34) [2024-11-24 01:01:14,058 INFO L276 IsEmpty]: Start isEmpty. Operand 22080 states and 28628 transitions. [2024-11-24 01:01:14,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2024-11-24 01:01:14,065 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 01:01:14,065 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2024-11-24 01:01:14,076 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-24 01:01:14,266 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-24 01:01:14,266 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 01:01:14,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 01:01:14,266 INFO L85 PathProgramCache]: Analyzing trace with hash 648932033, now seen corresponding path program 1 times [2024-11-24 01:01:14,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 01:01:14,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165706234] [2024-11-24 01:01:14,267 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:01:14,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 01:01:14,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:01:15,284 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 26 proven. 7 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-24 01:01:15,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 01:01:15,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165706234] [2024-11-24 01:01:15,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165706234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 01:01:15,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953091092] [2024-11-24 01:01:15,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 01:01:15,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 01:01:15,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 01:01:15,287 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 01:01:15,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3f5c4bca-ff01-4e09-ace0-3cd2c35f2207/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-24 01:01:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 01:01:15,620 INFO L256 TraceCheckSpWp]: Trace formula consists of 824 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-24 01:01:15,626 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 01:01:15,970 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 63 proven. 27 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-11-24 01:01:15,971 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 01:01:16,259 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 18 proven. 15 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2024-11-24 01:01:16,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953091092] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 01:01:16,260 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 01:01:16,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 7] total 20 [2024-11-24 01:01:16,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164302819] [2024-11-24 01:01:16,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 01:01:16,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-24 01:01:16,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 01:01:16,262 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-24 01:01:16,262 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=329, Unknown=0, NotChecked=0, Total=380 [2024-11-24 01:01:16,262 INFO L87 Difference]: Start difference. First operand 22080 states and 28628 transitions. Second operand has 20 states, 20 states have (on average 12.65) internal successors, (253), 20 states have internal predecessors, (253), 8 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) [2024-11-24 01:01:23,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 01:01:23,749 INFO L93 Difference]: Finished difference Result 46445 states and 60207 transitions. [2024-11-24 01:01:23,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-24 01:01:23,750 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 12.65) internal successors, (253), 20 states have internal predecessors, (253), 8 states have call successors, (44), 5 states have call predecessors, (44), 6 states have return successors, (43), 8 states have call predecessors, (43), 8 states have call successors, (43) Word has length 179 [2024-11-24 01:01:23,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 01:01:23,851 INFO L225 Difference]: With dead ends: 46445 [2024-11-24 01:01:23,851 INFO L226 Difference]: Without dead ends: 24685 [2024-11-24 01:01:23,887 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 407 GetRequests, 360 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 450 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=388, Invalid=1964, Unknown=0, NotChecked=0, Total=2352 [2024-11-24 01:01:23,888 INFO L435 NwaCegarLoop]: 547 mSDtfsCounter, 1469 mSDsluCounter, 4692 mSDsCounter, 0 mSdLazyCounter, 2996 mSolverCounterSat, 475 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1469 SdHoareTripleChecker+Valid, 5239 SdHoareTripleChecker+Invalid, 3471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 475 IncrementalHoareTripleChecker+Valid, 2996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2024-11-24 01:01:23,888 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1469 Valid, 5239 Invalid, 3471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [475 Valid, 2996 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2024-11-24 01:01:23,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24685 states.