./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1 --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 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:34:49,486 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:34:49,540 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:34:49,545 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:34:49,545 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:34:49,566 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:34:49,566 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:34:49,566 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:34:49,567 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:34:49,567 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:34:49,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:34:49,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:34:49,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:34:49,567 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:34:49,568 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:34:49,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:34:49,568 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:34:49,568 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:34:49,568 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:34:49,568 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:34:49,568 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:34:49,568 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:34:49,568 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:34:49,568 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:34:49,569 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:34:49,569 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:34:49,569 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:34:49,569 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:34:49,569 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:34:49,569 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:34:49,569 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:34:49,569 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:34:49,569 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:34:49,569 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:34:49,570 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:34:49,570 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:34:49,570 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:34:49,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:34:49,570 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:34:49,570 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:34:49,570 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:34:49,570 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:34:49,570 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:34:49,570 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:34:49,571 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:34:49,571 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:34:49,571 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:34:49,571 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:34:49,571 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_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1 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 -> 72c3cbe0b435a963730c7c79c0d825f3c978c53ad7cc61822ef9417e2e6ee67f [2024-12-02 14:34:49,770 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:34:49,779 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:34:49,781 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:34:49,782 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:34:49,782 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:34:49,783 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2024-12-02 14:34:52,437 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/data/c868f770c/5a2d75c397854b37af80932065c33c58/FLAGe1d8d3b63 [2024-12-02 14:34:52,720 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:34:52,721 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i [2024-12-02 14:34:52,734 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/data/c868f770c/5a2d75c397854b37af80932065c33c58/FLAGe1d8d3b63 [2024-12-02 14:34:52,747 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/data/c868f770c/5a2d75c397854b37af80932065c33c58 [2024-12-02 14:34:52,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:34:52,751 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:34:52,752 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:34:52,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:34:52,755 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:34:52,755 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:34:52" (1/1) ... [2024-12-02 14:34:52,756 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b810774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:52, skipping insertion in model container [2024-12-02 14:34:52,756 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:34:52" (1/1) ... [2024-12-02 14:34:52,786 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:34:53,037 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_20e540f7-d645-4512-9aea-68f3bf1b63e6/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i[33021,33034] [2024-12-02 14:34:53,105 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:34:53,116 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:34:53,145 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_20e540f7-d645-4512-9aea-68f3bf1b63e6/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test1-1.i[33021,33034] [2024-12-02 14:34:53,187 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:34:53,212 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:34:53,212 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:53 WrapperNode [2024-12-02 14:34:53,212 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:34:53,213 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:34:53,213 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:34:53,213 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:34:53,218 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:53" (1/1) ... [2024-12-02 14:34:53,235 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:53" (1/1) ... [2024-12-02 14:34:53,272 INFO L138 Inliner]: procedures = 176, calls = 179, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 820 [2024-12-02 14:34:53,272 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:34:53,272 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:34:53,272 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:34:53,273 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:34:53,282 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:53" (1/1) ... [2024-12-02 14:34:53,282 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:53" (1/1) ... [2024-12-02 14:34:53,289 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:53" (1/1) ... [2024-12-02 14:34:53,327 INFO L175 MemorySlicer]: Split 158 memory accesses to 2 slices as follows [2, 156]. 99 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 42 writes are split as follows [0, 42]. [2024-12-02 14:34:53,327 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:53" (1/1) ... [2024-12-02 14:34:53,328 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:53" (1/1) ... [2024-12-02 14:34:53,351 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:53" (1/1) ... [2024-12-02 14:34:53,352 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:53" (1/1) ... [2024-12-02 14:34:53,360 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:53" (1/1) ... [2024-12-02 14:34:53,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:53" (1/1) ... [2024-12-02 14:34:53,366 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:53" (1/1) ... [2024-12-02 14:34:53,371 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:34:53,372 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:34:53,372 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:34:53,372 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:34:53,373 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:53" (1/1) ... [2024-12-02 14:34:53,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:34:53,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:34:53,404 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:34:53,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:34:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 14:34:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 14:34:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-12-02 14:34:53,425 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-12-02 14:34:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 14:34:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 14:34:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#0 [2024-12-02 14:34:53,425 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset#1 [2024-12-02 14:34:53,425 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#0 [2024-12-02 14:34:53,425 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset#1 [2024-12-02 14:34:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-12-02 14:34:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:34:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-12-02 14:34:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-12-02 14:34:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-12-02 14:34:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-12-02 14:34:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-12-02 14:34:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:34:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 14:34:53,426 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:34:53,426 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:34:53,558 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:34:53,560 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:34:54,507 INFO L? ?]: Removed 208 outVars from TransFormulas that were not future-live. [2024-12-02 14:34:54,507 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:34:54,520 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:34:54,520 INFO L312 CfgBuilder]: Removed 18 assume(true) statements. [2024-12-02 14:34:54,521 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:34:54 BoogieIcfgContainer [2024-12-02 14:34:54,521 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:34:54,523 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:34:54,523 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:34:54,527 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:34:54,527 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:34:52" (1/3) ... [2024-12-02 14:34:54,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38270abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:34:54, skipping insertion in model container [2024-12-02 14:34:54,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:34:53" (2/3) ... [2024-12-02 14:34:54,528 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38270abe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:34:54, skipping insertion in model container [2024-12-02 14:34:54,528 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:34:54" (3/3) ... [2024-12-02 14:34:54,529 INFO L128 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test1-1.i [2024-12-02 14:34:54,543 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:34:54,544 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG uthash_FNV_test1-1.i that has 4 procedures, 243 locations, 1 initial locations, 20 loop locations, and 1 error locations. [2024-12-02 14:34:54,592 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:34:54,602 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;@3e826034, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:34:54,602 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 14:34:54,606 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 222 states have (on average 1.6036036036036037) internal successors, (356), 233 states have internal predecessors, (356), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 14:34:54,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-12-02 14:34:54,612 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:54,612 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:34:54,613 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:54,617 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:54,617 INFO L85 PathProgramCache]: Analyzing trace with hash -871851695, now seen corresponding path program 1 times [2024-12-02 14:34:54,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:54,624 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44299687] [2024-12-02 14:34:54,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:54,625 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:54,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:34:54,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:54,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44299687] [2024-12-02 14:34:54,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44299687] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:54,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:54,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:34:54,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23930081] [2024-12-02 14:34:54,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:54,786 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:34:54,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:54,800 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:34:54,801 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:34:54,803 INFO L87 Difference]: Start difference. First operand has 239 states, 222 states have (on average 1.6036036036036037) internal successors, (356), 233 states have internal predecessors, (356), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:34:54,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:54,890 INFO L93 Difference]: Finished difference Result 674 states and 1092 transitions. [2024-12-02 14:34:54,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:34:54,892 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-12-02 14:34:54,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:54,903 INFO L225 Difference]: With dead ends: 674 [2024-12-02 14:34:54,903 INFO L226 Difference]: Without dead ends: 433 [2024-12-02 14:34:54,907 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 [2024-12-02 14:34:54,909 INFO L435 NwaCegarLoop]: 343 mSDtfsCounter, 278 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:54,910 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 683 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:54,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 433 states. [2024-12-02 14:34:54,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 433 to 236. [2024-12-02 14:34:54,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 220 states have (on average 1.440909090909091) internal successors, (317), 230 states have internal predecessors, (317), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 14:34:54,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 343 transitions. [2024-12-02 14:34:54,953 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 343 transitions. Word has length 11 [2024-12-02 14:34:54,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:54,954 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 343 transitions. [2024-12-02 14:34:54,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:34:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 343 transitions. [2024-12-02 14:34:54,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 14:34:54,957 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:54,957 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:34:54,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 14:34:54,958 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:54,958 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:54,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1524368446, now seen corresponding path program 1 times [2024-12-02 14:34:54,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:54,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578679041] [2024-12-02 14:34:54,958 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:54,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:55,348 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:34:55,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:55,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578679041] [2024-12-02 14:34:55,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578679041] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:55,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:55,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:34:55,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259732383] [2024-12-02 14:34:55,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:55,350 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:34:55,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:55,350 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:34:55,350 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:34:55,351 INFO L87 Difference]: Start difference. First operand 236 states and 343 transitions. Second operand has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:34:55,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:55,449 INFO L93 Difference]: Finished difference Result 472 states and 686 transitions. [2024-12-02 14:34:55,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:34:55,450 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-12-02 14:34:55,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:55,452 INFO L225 Difference]: With dead ends: 472 [2024-12-02 14:34:55,452 INFO L226 Difference]: Without dead ends: 239 [2024-12-02 14:34:55,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:34:55,453 INFO L435 NwaCegarLoop]: 314 mSDtfsCounter, 88 mSDsluCounter, 836 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:55,454 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 1150 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:34:55,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2024-12-02 14:34:55,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 236. [2024-12-02 14:34:55,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 220 states have (on average 1.4090909090909092) internal successors, (310), 230 states have internal predecessors, (310), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 14:34:55,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 336 transitions. [2024-12-02 14:34:55,466 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 336 transitions. Word has length 87 [2024-12-02 14:34:55,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:55,466 INFO L471 AbstractCegarLoop]: Abstraction has 236 states and 336 transitions. [2024-12-02 14:34:55,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.2) internal successors, (86), 5 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:34:55,467 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 336 transitions. [2024-12-02 14:34:55,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 14:34:55,469 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:55,469 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:34:55,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:34:55,469 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:55,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:55,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1515792822, now seen corresponding path program 1 times [2024-12-02 14:34:55,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:55,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282653596] [2024-12-02 14:34:55,470 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:55,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:55,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:55,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:34:55,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:55,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282653596] [2024-12-02 14:34:55,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282653596] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:55,683 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:55,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:34:55,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639713358] [2024-12-02 14:34:55,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:55,684 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:34:55,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:55,684 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:34:55,684 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:34:55,685 INFO L87 Difference]: Start difference. First operand 236 states and 336 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:34:55,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:55,742 INFO L93 Difference]: Finished difference Result 475 states and 678 transitions. [2024-12-02 14:34:55,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:34:55,743 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-12-02 14:34:55,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:55,745 INFO L225 Difference]: With dead ends: 475 [2024-12-02 14:34:55,745 INFO L226 Difference]: Without dead ends: 242 [2024-12-02 14:34:55,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:34:55,747 INFO L435 NwaCegarLoop]: 329 mSDtfsCounter, 1 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:55,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 636 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:55,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-12-02 14:34:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2024-12-02 14:34:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 226 states have (on average 1.3982300884955752) internal successors, (316), 236 states have internal predecessors, (316), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 14:34:55,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 342 transitions. [2024-12-02 14:34:55,760 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 342 transitions. Word has length 87 [2024-12-02 14:34:55,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:55,761 INFO L471 AbstractCegarLoop]: Abstraction has 242 states and 342 transitions. [2024-12-02 14:34:55,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:34:55,761 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 342 transitions. [2024-12-02 14:34:55,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2024-12-02 14:34:55,763 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:55,763 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:34:55,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:34:55,763 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:55,764 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:55,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1082063736, now seen corresponding path program 1 times [2024-12-02 14:34:55,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:55,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260168011] [2024-12-02 14:34:55,764 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:55,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:55,973 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:34:55,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:55,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260168011] [2024-12-02 14:34:55,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260168011] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:34:55,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:34:55,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-12-02 14:34:55,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741010884] [2024-12-02 14:34:55,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:34:55,974 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 14:34:55,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:55,975 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 14:34:55,975 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-12-02 14:34:55,975 INFO L87 Difference]: Start difference. First operand 242 states and 342 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:34:56,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:56,035 INFO L93 Difference]: Finished difference Result 618 states and 878 transitions. [2024-12-02 14:34:56,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 14:34:56,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 87 [2024-12-02 14:34:56,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:56,041 INFO L225 Difference]: With dead ends: 618 [2024-12-02 14:34:56,041 INFO L226 Difference]: Without dead ends: 379 [2024-12-02 14:34:56,041 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 [2024-12-02 14:34:56,042 INFO L435 NwaCegarLoop]: 334 mSDtfsCounter, 135 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:56,043 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 660 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:34:56,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-12-02 14:34:56,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2024-12-02 14:34:56,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 363 states have (on average 1.4104683195592287) internal successors, (512), 373 states have internal predecessors, (512), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 4 states have call predecessors, (13), 13 states have call successors, (13) [2024-12-02 14:34:56,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 538 transitions. [2024-12-02 14:34:56,062 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 538 transitions. Word has length 87 [2024-12-02 14:34:56,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:56,063 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 538 transitions. [2024-12-02 14:34:56,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 3 states have internal predecessors, (86), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:34:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 538 transitions. [2024-12-02 14:34:56,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2024-12-02 14:34:56,065 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:56,065 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:34:56,065 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:34:56,065 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:56,065 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:56,066 INFO L85 PathProgramCache]: Analyzing trace with hash -630023000, now seen corresponding path program 1 times [2024-12-02 14:34:56,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:56,066 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237387003] [2024-12-02 14:34:56,066 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:56,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:56,377 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:34:56,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:56,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237387003] [2024-12-02 14:34:56,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237387003] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:34:56,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [429590561] [2024-12-02 14:34:56,378 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:56,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:34:56,378 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:34:56,380 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:34:56,381 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:34:56,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:56,703 INFO L256 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 14:34:56,711 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:34:56,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:34:56,894 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:34:57,061 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:34:57,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [429590561] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:34:57,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:34:57,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-12-02 14:34:57,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534404765] [2024-12-02 14:34:57,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:34:57,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:34:57,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:57,064 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:34:57,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:34:57,064 INFO L87 Difference]: Start difference. First operand 379 states and 538 transitions. Second operand has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-12-02 14:34:57,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:34:57,195 INFO L93 Difference]: Finished difference Result 883 states and 1244 transitions. [2024-12-02 14:34:57,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:34:57,196 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 102 [2024-12-02 14:34:57,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:34:57,200 INFO L225 Difference]: With dead ends: 883 [2024-12-02 14:34:57,200 INFO L226 Difference]: Without dead ends: 852 [2024-12-02 14:34:57,201 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 206 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:34:57,202 INFO L435 NwaCegarLoop]: 377 mSDtfsCounter, 1065 mSDsluCounter, 1296 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1073 SdHoareTripleChecker+Valid, 1673 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:34:57,202 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1073 Valid, 1673 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:34:57,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 852 states. [2024-12-02 14:34:57,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 852 to 852. [2024-12-02 14:34:57,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 827 states have (on average 1.3869407496977026) internal successors, (1147), 837 states have internal predecessors, (1147), 22 states have call successors, (22), 2 states have call predecessors, (22), 2 states have return successors, (22), 13 states have call predecessors, (22), 22 states have call successors, (22) [2024-12-02 14:34:57,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1191 transitions. [2024-12-02 14:34:57,232 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1191 transitions. Word has length 102 [2024-12-02 14:34:57,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:34:57,233 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1191 transitions. [2024-12-02 14:34:57,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.0) internal successors, (259), 7 states have internal predecessors, (259), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-12-02 14:34:57,233 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1191 transitions. [2024-12-02 14:34:57,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 331 [2024-12-02 14:34:57,237 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:34:57,238 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:34:57,249 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:34:57,438 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:34:57,439 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:34:57,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:34:57,439 INFO L85 PathProgramCache]: Analyzing trace with hash 876153885, now seen corresponding path program 1 times [2024-12-02 14:34:57,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:34:57,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1119431348] [2024-12-02 14:34:57,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:57,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:34:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:58,441 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 454 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:34:58,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:34:58,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1119431348] [2024-12-02 14:34:58,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1119431348] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:34:58,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311287590] [2024-12-02 14:34:58,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:34:58,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:34:58,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:34:58,444 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:34:58,445 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:34:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:34:59,015 INFO L256 TraceCheckSpWp]: Trace formula consists of 1659 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-12-02 14:34:59,024 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:34:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 454 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:34:59,447 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:34:59,853 INFO L134 CoverageAnalysis]: Checked inductivity of 458 backedges. 0 proven. 454 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 14:34:59,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311287590] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:34:59,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:34:59,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-12-02 14:34:59,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619662204] [2024-12-02 14:34:59,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:34:59,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-12-02 14:34:59,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:34:59,856 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-12-02 14:34:59,856 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:34:59,856 INFO L87 Difference]: Start difference. First operand 852 states and 1191 transitions. Second operand has 13 states, 13 states have (on average 55.0) internal successors, (715), 13 states have internal predecessors, (715), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-12-02 14:35:00,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:35:00,125 INFO L93 Difference]: Finished difference Result 2107 states and 2951 transitions. [2024-12-02 14:35:00,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-12-02 14:35:00,126 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 55.0) internal successors, (715), 13 states have internal predecessors, (715), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 330 [2024-12-02 14:35:00,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:35:00,136 INFO L225 Difference]: With dead ends: 2107 [2024-12-02 14:35:00,136 INFO L226 Difference]: Without dead ends: 2076 [2024-12-02 14:35:00,137 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 665 GetRequests, 654 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-12-02 14:35:00,138 INFO L435 NwaCegarLoop]: 422 mSDtfsCounter, 4230 mSDsluCounter, 3050 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4256 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 88 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:35:00,138 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4256 Valid, 3472 Invalid, 88 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:35:00,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2076 states. [2024-12-02 14:35:00,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2076 to 2076. [2024-12-02 14:35:00,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 2033 states have (on average 1.384653221839646) internal successors, (2815), 2043 states have internal predecessors, (2815), 40 states have call successors, (40), 2 states have call predecessors, (40), 2 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 14:35:00,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 2895 transitions. [2024-12-02 14:35:00,200 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 2895 transitions. Word has length 330 [2024-12-02 14:35:00,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:35:00,201 INFO L471 AbstractCegarLoop]: Abstraction has 2076 states and 2895 transitions. [2024-12-02 14:35:00,201 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 55.0) internal successors, (715), 13 states have internal predecessors, (715), 4 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-12-02 14:35:00,201 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 2895 transitions. [2024-12-02 14:35:00,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 787 [2024-12-02 14:35:00,224 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:35:00,225 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 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] [2024-12-02 14:35:00,237 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 14:35:00,425 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-12-02 14:35:00,425 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:35:00,426 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:35:00,426 INFO L85 PathProgramCache]: Analyzing trace with hash -362004601, now seen corresponding path program 2 times [2024-12-02 14:35:00,426 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:35:00,426 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773986027] [2024-12-02 14:35:00,426 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:35:00,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:37:57,055 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 14:37:57,055 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:37:58,492 INFO L134 CoverageAnalysis]: Checked inductivity of 3416 backedges. 505 proven. 3 refuted. 0 times theorem prover too weak. 2908 trivial. 0 not checked. [2024-12-02 14:37:58,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:37:58,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773986027] [2024-12-02 14:37:58,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773986027] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:37:58,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1164566556] [2024-12-02 14:37:58,493 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:37:58,493 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:37:58,493 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:37:58,495 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:37:58,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:38:04,933 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 14:38:04,933 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:38:04,975 INFO L256 TraceCheckSpWp]: Trace formula consists of 3849 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-12-02 14:38:04,991 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:38:05,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-12-02 14:38:06,205 INFO L134 CoverageAnalysis]: Checked inductivity of 3416 backedges. 899 proven. 33 refuted. 0 times theorem prover too weak. 2484 trivial. 0 not checked. [2024-12-02 14:38:06,205 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:38:09,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1164566556] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:38:09,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 14:38:09,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 13] total 15 [2024-12-02 14:38:09,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234565695] [2024-12-02 14:38:09,712 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 14:38:09,713 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-12-02 14:38:09,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:38:09,714 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-12-02 14:38:09,714 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2024-12-02 14:38:09,714 INFO L87 Difference]: Start difference. First operand 2076 states and 2895 transitions. Second operand has 15 states, 15 states have (on average 18.0) internal successors, (270), 15 states have internal predecessors, (270), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 14:38:15,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:38:15,252 INFO L93 Difference]: Finished difference Result 4053 states and 5651 transitions. [2024-12-02 14:38:15,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-12-02 14:38:15,252 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 18.0) internal successors, (270), 15 states have internal predecessors, (270), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 786 [2024-12-02 14:38:15,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:38:15,262 INFO L225 Difference]: With dead ends: 4053 [2024-12-02 14:38:15,262 INFO L226 Difference]: Without dead ends: 2120 [2024-12-02 14:38:15,265 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1517 GetRequests, 1485 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=225, Invalid=897, Unknown=0, NotChecked=0, Total=1122 [2024-12-02 14:38:15,266 INFO L435 NwaCegarLoop]: 606 mSDtfsCounter, 734 mSDsluCounter, 4288 mSDsCounter, 0 mSdLazyCounter, 2719 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 737 SdHoareTripleChecker+Valid, 4894 SdHoareTripleChecker+Invalid, 2729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:38:15,267 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [737 Valid, 4894 Invalid, 2729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2719 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2024-12-02 14:38:15,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2120 states. [2024-12-02 14:38:15,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2120 to 2113. [2024-12-02 14:38:15,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2113 states, 2069 states have (on average 1.3813436442725955) internal successors, (2858), 2079 states have internal predecessors, (2858), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 14:38:15,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2113 states to 2113 states and 2938 transitions. [2024-12-02 14:38:15,341 INFO L78 Accepts]: Start accepts. Automaton has 2113 states and 2938 transitions. Word has length 786 [2024-12-02 14:38:15,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:38:15,342 INFO L471 AbstractCegarLoop]: Abstraction has 2113 states and 2938 transitions. [2024-12-02 14:38:15,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 18.0) internal successors, (270), 15 states have internal predecessors, (270), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 14:38:15,342 INFO L276 IsEmpty]: Start isEmpty. Operand 2113 states and 2938 transitions. [2024-12-02 14:38:15,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 788 [2024-12-02 14:38:15,368 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:38:15,369 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 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] [2024-12-02 14:38:15,429 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:38:15,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-12-02 14:38:15,570 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:38:15,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:38:15,570 INFO L85 PathProgramCache]: Analyzing trace with hash -125869361, now seen corresponding path program 1 times [2024-12-02 14:38:15,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:38:15,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027353369] [2024-12-02 14:38:15,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:15,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:38:15,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:38:17,387 INFO L134 CoverageAnalysis]: Checked inductivity of 3418 backedges. 853 proven. 0 refuted. 0 times theorem prover too weak. 2565 trivial. 0 not checked. [2024-12-02 14:38:17,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:38:17,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027353369] [2024-12-02 14:38:17,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2027353369] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:38:17,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:38:17,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:38:17,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836487609] [2024-12-02 14:38:17,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:38:17,388 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:38:17,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:38:17,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:38:17,389 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 14:38:17,389 INFO L87 Difference]: Start difference. First operand 2113 states and 2938 transitions. Second operand has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 14:38:17,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:38:17,463 INFO L93 Difference]: Finished difference Result 3635 states and 4979 transitions. [2024-12-02 14:38:17,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:38:17,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 787 [2024-12-02 14:38:17,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:38:17,471 INFO L225 Difference]: With dead ends: 3635 [2024-12-02 14:38:17,472 INFO L226 Difference]: Without dead ends: 1531 [2024-12-02 14:38:17,475 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 [2024-12-02 14:38:17,476 INFO L435 NwaCegarLoop]: 238 mSDtfsCounter, 9 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:38:17,476 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 695 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 14:38:17,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2024-12-02 14:38:17,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1531. [2024-12-02 14:38:17,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1487 states have (on average 1.3113651647612643) internal successors, (1950), 1497 states have internal predecessors, (1950), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 14:38:17,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 2030 transitions. [2024-12-02 14:38:17,525 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 2030 transitions. Word has length 787 [2024-12-02 14:38:17,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:38:17,526 INFO L471 AbstractCegarLoop]: Abstraction has 1531 states and 2030 transitions. [2024-12-02 14:38:17,526 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 48.0) internal successors, (192), 4 states have internal predecessors, (192), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 14:38:17,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 2030 transitions. [2024-12-02 14:38:17,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 789 [2024-12-02 14:38:17,535 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:38:17,536 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 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] [2024-12-02 14:38:17,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:38:17,536 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:38:17,536 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:38:17,537 INFO L85 PathProgramCache]: Analyzing trace with hash 221273084, now seen corresponding path program 1 times [2024-12-02 14:38:17,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:38:17,537 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820233293] [2024-12-02 14:38:17,537 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:38:17,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:41:55,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:41:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 3418 backedges. 505 proven. 5 refuted. 0 times theorem prover too weak. 2908 trivial. 0 not checked. [2024-12-02 14:41:56,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:41:56,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820233293] [2024-12-02 14:41:56,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820233293] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:41:56,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224940166] [2024-12-02 14:41:56,925 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:41:56,925 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:41:56,925 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:41:56,927 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:41:56,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 14:42:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:42:32,757 INFO L256 TraceCheckSpWp]: Trace formula consists of 3865 conjuncts, 31 conjuncts are in the unsatisfiable core [2024-12-02 14:42:32,772 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:42:32,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2024-12-02 14:42:33,152 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 14:42:33,153 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 77 treesize of output 55 [2024-12-02 14:42:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3418 backedges. 298 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 14:42:33,314 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:42:33,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224940166] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:42:33,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:42:33,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [5] total 14 [2024-12-02 14:42:33,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237288327] [2024-12-02 14:42:33,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:42:33,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 14:42:33,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:42:33,316 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 14:42:33,316 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:42:33,316 INFO L87 Difference]: Start difference. First operand 1531 states and 2030 transitions. Second operand has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 11 states have internal predecessors, (133), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 14:42:34,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:42:34,637 INFO L93 Difference]: Finished difference Result 3024 states and 4019 transitions. [2024-12-02 14:42:34,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-12-02 14:42:34,637 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 11 states have internal predecessors, (133), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 788 [2024-12-02 14:42:34,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:42:34,643 INFO L225 Difference]: With dead ends: 3024 [2024-12-02 14:42:34,643 INFO L226 Difference]: Without dead ends: 1531 [2024-12-02 14:42:34,646 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 800 GetRequests, 780 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2024-12-02 14:42:34,647 INFO L435 NwaCegarLoop]: 280 mSDtfsCounter, 288 mSDsluCounter, 1249 mSDsCounter, 0 mSdLazyCounter, 528 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1529 SdHoareTripleChecker+Invalid, 532 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 528 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:42:34,647 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [290 Valid, 1529 Invalid, 532 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 528 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-12-02 14:42:34,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2024-12-02 14:42:34,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1531. [2024-12-02 14:42:34,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1487 states have (on average 1.3106926698049766) internal successors, (1949), 1497 states have internal predecessors, (1949), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 14:42:34,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 2029 transitions. [2024-12-02 14:42:34,690 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 2029 transitions. Word has length 788 [2024-12-02 14:42:34,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:42:34,690 INFO L471 AbstractCegarLoop]: Abstraction has 1531 states and 2029 transitions. [2024-12-02 14:42:34,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 12.090909090909092) internal successors, (133), 11 states have internal predecessors, (133), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 14:42:34,691 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 2029 transitions. [2024-12-02 14:42:34,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2024-12-02 14:42:34,699 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:42:34,699 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 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] [2024-12-02 14:42:34,803 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 14:42:34,899 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:42:34,900 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:42:34,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:42:34,900 INFO L85 PathProgramCache]: Analyzing trace with hash -734226871, now seen corresponding path program 2 times [2024-12-02 14:42:34,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:42:34,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147478076] [2024-12-02 14:42:34,901 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:42:34,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:07,927 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 14:45:07,928 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:45:08,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3419 backedges. 506 proven. 5 refuted. 0 times theorem prover too weak. 2908 trivial. 0 not checked. [2024-12-02 14:45:08,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:08,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147478076] [2024-12-02 14:45:08,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147478076] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:45:08,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [50813664] [2024-12-02 14:45:08,849 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:45:08,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:45:08,849 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:45:08,851 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:45:08,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 14:45:23,697 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 14:45:23,697 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:45:23,750 INFO L256 TraceCheckSpWp]: Trace formula consists of 3866 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-12-02 14:45:23,765 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:45:23,830 INFO L134 CoverageAnalysis]: Checked inductivity of 3419 backedges. 299 proven. 0 refuted. 0 times theorem prover too weak. 3120 trivial. 0 not checked. [2024-12-02 14:45:23,830 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:45:23,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [50813664] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:23,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:45:23,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2024-12-02 14:45:23,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724919462] [2024-12-02 14:45:23,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:23,831 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 14:45:23,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:23,832 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 14:45:23,832 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:23,832 INFO L87 Difference]: Start difference. First operand 1531 states and 2029 transitions. Second operand has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 14:45:23,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:23,962 INFO L93 Difference]: Finished difference Result 3024 states and 4018 transitions. [2024-12-02 14:45:23,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 14:45:23,962 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 789 [2024-12-02 14:45:23,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:23,968 INFO L225 Difference]: With dead ends: 3024 [2024-12-02 14:45:23,968 INFO L226 Difference]: Without dead ends: 1531 [2024-12-02 14:45:23,970 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 793 GetRequests, 788 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:23,970 INFO L435 NwaCegarLoop]: 244 mSDtfsCounter, 13 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:23,971 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 607 Invalid, 112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 14:45:23,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1531 states. [2024-12-02 14:45:24,001 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1531 to 1531. [2024-12-02 14:45:24,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1531 states, 1487 states have (on average 1.3039677202420983) internal successors, (1939), 1497 states have internal predecessors, (1939), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 14:45:24,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 2019 transitions. [2024-12-02 14:45:24,008 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 2019 transitions. Word has length 789 [2024-12-02 14:45:24,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:24,008 INFO L471 AbstractCegarLoop]: Abstraction has 1531 states and 2019 transitions. [2024-12-02 14:45:24,008 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.5) internal successors, (134), 4 states have internal predecessors, (134), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 14:45:24,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 2019 transitions. [2024-12-02 14:45:24,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 792 [2024-12-02 14:45:24,017 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:24,017 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 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] [2024-12-02 14:45:24,099 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 14:45:24,217 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-12-02 14:45:24,218 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:24,218 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:24,218 INFO L85 PathProgramCache]: Analyzing trace with hash -157507551, now seen corresponding path program 1 times [2024-12-02 14:45:24,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:24,218 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734777078] [2024-12-02 14:45:24,218 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:24,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:25,758 INFO L134 CoverageAnalysis]: Checked inductivity of 3420 backedges. 318 proven. 0 refuted. 0 times theorem prover too weak. 3102 trivial. 0 not checked. [2024-12-02 14:45:25,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:25,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734777078] [2024-12-02 14:45:25,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734777078] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:25,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:25,758 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:45:25,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102747126] [2024-12-02 14:45:25,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:25,759 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:45:25,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:25,760 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:45:25,760 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:45:25,760 INFO L87 Difference]: Start difference. First operand 1531 states and 2019 transitions. Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 14:45:25,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:25,933 INFO L93 Difference]: Finished difference Result 3051 states and 4044 transitions. [2024-12-02 14:45:25,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:45:25,934 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 791 [2024-12-02 14:45:25,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:25,938 INFO L225 Difference]: With dead ends: 3051 [2024-12-02 14:45:25,938 INFO L226 Difference]: Without dead ends: 1561 [2024-12-02 14:45:25,939 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:45:25,940 INFO L435 NwaCegarLoop]: 243 mSDtfsCounter, 4 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 238 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 238 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:25,940 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 771 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 238 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:45:25,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2024-12-02 14:45:25,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 1561. [2024-12-02 14:45:25,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1561 states, 1517 states have (on average 1.2979564930784444) internal successors, (1969), 1527 states have internal predecessors, (1969), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 14:45:25,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1561 states to 1561 states and 2049 transitions. [2024-12-02 14:45:25,979 INFO L78 Accepts]: Start accepts. Automaton has 1561 states and 2049 transitions. Word has length 791 [2024-12-02 14:45:25,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:25,979 INFO L471 AbstractCegarLoop]: Abstraction has 1561 states and 2049 transitions. [2024-12-02 14:45:25,980 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 6 states have internal predecessors, (138), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 14:45:25,980 INFO L276 IsEmpty]: Start isEmpty. Operand 1561 states and 2049 transitions. [2024-12-02 14:45:25,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2024-12-02 14:45:25,988 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:25,988 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 8, 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] [2024-12-02 14:45:25,988 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 14:45:25,988 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:25,989 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:25,989 INFO L85 PathProgramCache]: Analyzing trace with hash -663568407, now seen corresponding path program 1 times [2024-12-02 14:45:25,989 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:25,989 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747708947] [2024-12-02 14:45:25,989 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:25,989 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:45:26,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:45:27,270 INFO L134 CoverageAnalysis]: Checked inductivity of 3421 backedges. 337 proven. 0 refuted. 0 times theorem prover too weak. 3084 trivial. 0 not checked. [2024-12-02 14:45:27,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:45:27,270 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747708947] [2024-12-02 14:45:27,270 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747708947] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:45:27,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:45:27,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:45:27,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342660790] [2024-12-02 14:45:27,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:45:27,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:45:27,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:45:27,271 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:45:27,271 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:27,271 INFO L87 Difference]: Start difference. First operand 1561 states and 2049 transitions. Second operand has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 14:45:27,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:45:27,512 INFO L93 Difference]: Finished difference Result 3121 states and 4120 transitions. [2024-12-02 14:45:27,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:45:27,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 793 [2024-12-02 14:45:27,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:45:27,551 INFO L225 Difference]: With dead ends: 3121 [2024-12-02 14:45:27,551 INFO L226 Difference]: Without dead ends: 1611 [2024-12-02 14:45:27,552 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:45:27,553 INFO L435 NwaCegarLoop]: 233 mSDtfsCounter, 8 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 14:45:27,553 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 1082 Invalid, 400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 14:45:27,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1611 states. [2024-12-02 14:45:27,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1611 to 1601. [2024-12-02 14:45:27,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1557 states have (on average 1.2967244701348748) internal successors, (2019), 1567 states have internal predecessors, (2019), 40 states have call successors, (40), 3 states have call predecessors, (40), 3 states have return successors, (40), 31 states have call predecessors, (40), 40 states have call successors, (40) [2024-12-02 14:45:27,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2099 transitions. [2024-12-02 14:45:27,590 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2099 transitions. Word has length 793 [2024-12-02 14:45:27,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:45:27,590 INFO L471 AbstractCegarLoop]: Abstraction has 1601 states and 2099 transitions. [2024-12-02 14:45:27,590 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.428571428571427) internal successors, (143), 7 states have internal predecessors, (143), 1 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-12-02 14:45:27,590 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2099 transitions. [2024-12-02 14:45:27,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2024-12-02 14:45:27,598 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:45:27,598 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 8, 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] [2024-12-02 14:45:27,598 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 14:45:27,598 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:45:27,599 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:45:27,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1059427223, now seen corresponding path program 1 times [2024-12-02 14:45:27,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:45:27,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255491220] [2024-12-02 14:45:27,599 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:45:27,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:47:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:47:49,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3421 backedges. 508 proven. 5 refuted. 0 times theorem prover too weak. 2908 trivial. 0 not checked. [2024-12-02 14:47:49,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:47:49,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255491220] [2024-12-02 14:47:49,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255491220] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:47:49,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [205471111] [2024-12-02 14:47:49,025 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:47:49,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:47:49,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:47:49,026 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:47:49,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 14:48:03,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:48:03,538 INFO L256 TraceCheckSpWp]: Trace formula consists of 3864 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-12-02 14:48:03,549 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:48:03,929 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 7 [2024-12-02 14:48:04,621 INFO L134 CoverageAnalysis]: Checked inductivity of 3421 backedges. 1850 proven. 585 refuted. 0 times theorem prover too weak. 986 trivial. 0 not checked. [2024-12-02 14:48:04,621 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:48:20,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [205471111] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:48:20,544 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-12-02 14:48:20,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 17] total 20 [2024-12-02 14:48:20,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488400447] [2024-12-02 14:48:20,545 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-12-02 14:48:20,546 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-12-02 14:48:20,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:48:20,547 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-12-02 14:48:20,547 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=910, Unknown=1, NotChecked=0, Total=1056 [2024-12-02 14:48:20,548 INFO L87 Difference]: Start difference. First operand 1601 states and 2099 transitions. Second operand has 20 states, 20 states have (on average 25.65) internal successors, (513), 20 states have internal predecessors, (513), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 14:48:31,912 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-12-02 14:48:32,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 14:48:32,070 INFO L93 Difference]: Finished difference Result 3114 states and 4114 transitions. [2024-12-02 14:48:32,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-12-02 14:48:32,071 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 25.65) internal successors, (513), 20 states have internal predecessors, (513), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 793 [2024-12-02 14:48:32,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 14:48:32,076 INFO L225 Difference]: With dead ends: 3114 [2024-12-02 14:48:32,076 INFO L226 Difference]: Without dead ends: 1606 [2024-12-02 14:48:32,078 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1524 GetRequests, 1485 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=291, Invalid=1348, Unknown=1, NotChecked=0, Total=1640 [2024-12-02 14:48:32,078 INFO L435 NwaCegarLoop]: 992 mSDtfsCounter, 983 mSDsluCounter, 11094 mSDsCounter, 0 mSdLazyCounter, 3959 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 12086 SdHoareTripleChecker+Invalid, 3969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 3959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2024-12-02 14:48:32,078 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 12086 Invalid, 3969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 3959 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2024-12-02 14:48:32,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1606 states. [2024-12-02 14:48:32,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1606 to 1606. [2024-12-02 14:48:32,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1606 states, 1561 states have (on average 1.296604740550929) internal successors, (2024), 1572 states have internal predecessors, (2024), 40 states have call successors, (40), 3 states have call predecessors, (40), 4 states have return successors, (50), 31 states have call predecessors, (50), 40 states have call successors, (50) [2024-12-02 14:48:32,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1606 states to 1606 states and 2114 transitions. [2024-12-02 14:48:32,119 INFO L78 Accepts]: Start accepts. Automaton has 1606 states and 2114 transitions. Word has length 793 [2024-12-02 14:48:32,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 14:48:32,120 INFO L471 AbstractCegarLoop]: Abstraction has 1606 states and 2114 transitions. [2024-12-02 14:48:32,120 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 25.65) internal successors, (513), 20 states have internal predecessors, (513), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2024-12-02 14:48:32,120 INFO L276 IsEmpty]: Start isEmpty. Operand 1606 states and 2114 transitions. [2024-12-02 14:48:32,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 798 [2024-12-02 14:48:32,128 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 14:48:32,129 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 7, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:48:32,200 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-12-02 14:48:32,329 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20e540f7-d645-4512-9aea-68f3bf1b63e6/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-12-02 14:48:32,329 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 14:48:32,330 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:48:32,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1672490599, now seen corresponding path program 2 times [2024-12-02 14:48:32,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:48:32,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358896299] [2024-12-02 14:48:32,330 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:48:32,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms