./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/verifythis/duplets.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/verifythis/duplets.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ac76721ba91522692e2c3e4d1ea27df0200031dd012c5066cc7280e0ae6e2244 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:38:37,816 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:38:37,901 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:38:37,906 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:38:37,906 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:38:37,928 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:38:37,928 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:38:37,929 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:38:37,929 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:38:37,929 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:38:37,929 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:38:37,929 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:38:37,930 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:38:37,930 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:38:37,930 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:38:37,930 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:38:37,930 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:38:37,930 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:38:37,930 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:38:37,930 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:38:37,931 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:38:37,931 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:38:37,931 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:38:37,931 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:38:37,931 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:38:37,931 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:38:37,931 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:38:37,931 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:38:37,932 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:38:37,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:38:37,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:38:37,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:38:37,932 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:38:37,932 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:38:37,932 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:38:37,932 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:38:37,932 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:38:37,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:38:37,933 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:38:37,933 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:38:37,933 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:38:37,933 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:38:37,933 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:38:37,933 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:38:37,933 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:38:37,933 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:38:37,934 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:38:37,934 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:38:37,934 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_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac76721ba91522692e2c3e4d1ea27df0200031dd012c5066cc7280e0ae6e2244 [2024-11-28 04:38:38,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:38:38,236 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:38:38,239 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:38:38,241 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:38:38,241 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:38:38,242 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/verifythis/duplets.c [2024-11-28 04:38:41,317 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/data/950dc5c82/11bdf4734c984e509c0c66f56234bd1e/FLAG376e8c254 [2024-11-28 04:38:41,622 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:38:41,623 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/sv-benchmarks/c/verifythis/duplets.c [2024-11-28 04:38:41,631 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/data/950dc5c82/11bdf4734c984e509c0c66f56234bd1e/FLAG376e8c254 [2024-11-28 04:38:41,652 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/data/950dc5c82/11bdf4734c984e509c0c66f56234bd1e [2024-11-28 04:38:41,655 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:38:41,658 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:38:41,661 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:38:41,662 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:38:41,667 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:38:41,670 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:38:41" (1/1) ... [2024-11-28 04:38:41,671 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ec07033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:41, skipping insertion in model container [2024-11-28 04:38:41,672 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:38:41" (1/1) ... [2024-11-28 04:38:41,690 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:38:41,879 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_8cc2ba7c-755c-4288-9622-a06be2bc1800/sv-benchmarks/c/verifythis/duplets.c[485,498] [2024-11-28 04:38:41,925 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:38:41,945 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:38:41,958 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_8cc2ba7c-755c-4288-9622-a06be2bc1800/sv-benchmarks/c/verifythis/duplets.c[485,498] [2024-11-28 04:38:41,985 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:38:42,009 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:38:42,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42 WrapperNode [2024-11-28 04:38:42,011 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:38:42,012 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:38:42,012 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:38:42,012 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:38:42,025 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2024-11-28 04:38:42,034 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2024-11-28 04:38:42,068 INFO L138 Inliner]: procedures = 21, calls = 43, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 122 [2024-11-28 04:38:42,069 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:38:42,069 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:38:42,070 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:38:42,070 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:38:42,081 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2024-11-28 04:38:42,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2024-11-28 04:38:42,084 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2024-11-28 04:38:42,118 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 5, 5, 7]. 37 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 5 writes are split as follows [0, 1, 1, 3]. [2024-11-28 04:38:42,119 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2024-11-28 04:38:42,119 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2024-11-28 04:38:42,138 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2024-11-28 04:38:42,139 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2024-11-28 04:38:42,148 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2024-11-28 04:38:42,150 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2024-11-28 04:38:42,154 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2024-11-28 04:38:42,157 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:38:42,164 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:38:42,164 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:38:42,164 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:38:42,165 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (1/1) ... [2024-11-28 04:38:42,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:38:42,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:42,208 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:38:42,218 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:38:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:38:42,253 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 04:38:42,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 04:38:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:38:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:38:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 04:38:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 04:38:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:38:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:38:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:38:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 04:38:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 04:38:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:38:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:38:42,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:38:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:38:42,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:38:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 04:38:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 04:38:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 04:38:42,255 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 04:38:42,255 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:38:42,393 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:38:42,394 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:38:42,729 INFO L? ?]: Removed 46 outVars from TransFormulas that were not future-live. [2024-11-28 04:38:42,729 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:38:42,746 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:38:42,746 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 04:38:42,747 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:38:42 BoogieIcfgContainer [2024-11-28 04:38:42,747 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:38:42,751 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:38:42,751 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:38:42,757 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:38:42,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:38:41" (1/3) ... [2024-11-28 04:38:42,758 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785aaa1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:38:42, skipping insertion in model container [2024-11-28 04:38:42,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:38:42" (2/3) ... [2024-11-28 04:38:42,760 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@785aaa1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:38:42, skipping insertion in model container [2024-11-28 04:38:42,760 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:38:42" (3/3) ... [2024-11-28 04:38:42,761 INFO L128 eAbstractionObserver]: Analyzing ICFG duplets.c [2024-11-28 04:38:42,783 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:38:42,785 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG duplets.c that has 3 procedures, 43 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-28 04:38:42,862 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:38:42,879 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;@57a3102c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:38:42,881 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:38:42,885 INFO L276 IsEmpty]: Start isEmpty. Operand has 43 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 31 states have internal predecessors, (40), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 04:38:42,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 04:38:42,894 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:42,895 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:42,896 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:42,904 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:42,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1136551737, now seen corresponding path program 1 times [2024-11-28 04:38:42,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:42,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798193762] [2024-11-28 04:38:42,914 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:42,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:43,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:43,118 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:38:43,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:43,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798193762] [2024-11-28 04:38:43,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798193762] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:43,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1023863107] [2024-11-28 04:38:43,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:43,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:43,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:43,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:43,127 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:38:43,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:43,310 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-28 04:38:43,318 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:43,337 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-28 04:38:43,337 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:38:43,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1023863107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:38:43,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:38:43,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-28 04:38:43,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948079263] [2024-11-28 04:38:43,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:38:43,364 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 04:38:43,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:43,389 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 04:38:43,390 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:38:43,392 INFO L87 Difference]: Start difference. First operand has 43 states, 30 states have (on average 1.3333333333333333) internal successors, (40), 31 states have internal predecessors, (40), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:38:43,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:43,422 INFO L93 Difference]: Finished difference Result 83 states and 121 transitions. [2024-11-28 04:38:43,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 04:38:43,424 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 33 [2024-11-28 04:38:43,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:43,430 INFO L225 Difference]: With dead ends: 83 [2024-11-28 04:38:43,430 INFO L226 Difference]: Without dead ends: 39 [2024-11-28 04:38:43,433 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 04:38:43,436 INFO L435 NwaCegarLoop]: 54 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:43,437 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:38:43,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2024-11-28 04:38:43,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2024-11-28 04:38:43,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 04:38:43,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2024-11-28 04:38:43,479 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 33 [2024-11-28 04:38:43,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:43,480 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2024-11-28 04:38:43,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 8.5) internal successors, (17), 2 states have internal predecessors, (17), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-28 04:38:43,480 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2024-11-28 04:38:43,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-28 04:38:43,482 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:43,482 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:43,489 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 04:38:43,683 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2024-11-28 04:38:43,684 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:43,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:43,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1821288094, now seen corresponding path program 1 times [2024-11-28 04:38:43,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:43,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131764990] [2024-11-28 04:38:43,685 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:43,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:38:44,302 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:44,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131764990] [2024-11-28 04:38:44,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131764990] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:44,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921962305] [2024-11-28 04:38:44,303 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:44,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:44,303 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:44,307 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:44,309 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:38:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:44,455 INFO L256 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 04:38:44,461 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:44,562 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:38:44,563 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:44,883 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:38:44,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921962305] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:38:44,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:38:44,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-28 04:38:44,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172316222] [2024-11-28 04:38:44,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:44,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:38:44,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:44,888 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:38:44,889 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:38:44,890 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 04:38:45,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:45,120 INFO L93 Difference]: Finished difference Result 69 states and 90 transitions. [2024-11-28 04:38:45,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:38:45,122 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 33 [2024-11-28 04:38:45,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:45,124 INFO L225 Difference]: With dead ends: 69 [2024-11-28 04:38:45,124 INFO L226 Difference]: Without dead ends: 50 [2024-11-28 04:38:45,125 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-11-28 04:38:45,126 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 51 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 215 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:45,126 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 215 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:38:45,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-28 04:38:45,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 40. [2024-11-28 04:38:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.2142857142857142) internal successors, (34), 29 states have internal predecessors, (34), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 04:38:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2024-11-28 04:38:45,139 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 33 [2024-11-28 04:38:45,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:45,140 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2024-11-28 04:38:45,140 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 11 states have internal predecessors, (25), 5 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-28 04:38:45,140 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2024-11-28 04:38:45,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-28 04:38:45,141 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:45,142 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:45,153 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:38:45,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:45,347 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:45,347 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:45,348 INFO L85 PathProgramCache]: Analyzing trace with hash -1347911154, now seen corresponding path program 1 times [2024-11-28 04:38:45,348 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:45,348 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599580587] [2024-11-28 04:38:45,348 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:45,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:45,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:45,522 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:38:45,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:45,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599580587] [2024-11-28 04:38:45,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599580587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:38:45,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:38:45,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:38:45,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676550940] [2024-11-28 04:38:45,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:38:45,523 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:38:45,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:45,524 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:38:45,524 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:38:45,524 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:38:45,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:45,600 INFO L93 Difference]: Finished difference Result 58 states and 74 transitions. [2024-11-28 04:38:45,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:38:45,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 36 [2024-11-28 04:38:45,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:45,604 INFO L225 Difference]: With dead ends: 58 [2024-11-28 04:38:45,604 INFO L226 Difference]: Without dead ends: 56 [2024-11-28 04:38:45,604 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:38:45,605 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 11 mSDsluCounter, 194 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:45,607 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 246 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:38:45,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-11-28 04:38:45,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2024-11-28 04:38:45,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.1875) internal successors, (38), 34 states have internal predecessors, (38), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 04:38:45,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 57 transitions. [2024-11-28 04:38:45,620 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 57 transitions. Word has length 36 [2024-11-28 04:38:45,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:45,620 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 57 transitions. [2024-11-28 04:38:45,620 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:38:45,621 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 57 transitions. [2024-11-28 04:38:45,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-28 04:38:45,621 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:45,621 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:45,621 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:38:45,622 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:45,622 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:45,622 INFO L85 PathProgramCache]: Analyzing trace with hash -175103757, now seen corresponding path program 1 times [2024-11-28 04:38:45,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:45,625 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141985743] [2024-11-28 04:38:45,625 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:45,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:45,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:46,423 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:38:46,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:46,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141985743] [2024-11-28 04:38:46,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141985743] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:38:46,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:38:46,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 04:38:46,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92866116] [2024-11-28 04:38:46,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:38:46,424 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:38:46,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:46,425 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:38:46,425 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:38:46,427 INFO L87 Difference]: Start difference. First operand 46 states and 57 transitions. Second operand has 11 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:38:46,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:46,876 INFO L93 Difference]: Finished difference Result 88 states and 112 transitions. [2024-11-28 04:38:46,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:38:46,877 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 37 [2024-11-28 04:38:46,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:46,880 INFO L225 Difference]: With dead ends: 88 [2024-11-28 04:38:46,880 INFO L226 Difference]: Without dead ends: 57 [2024-11-28 04:38:46,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:38:46,881 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 37 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:46,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 268 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:38:46,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2024-11-28 04:38:46,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2024-11-28 04:38:46,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 34 states have (on average 1.1764705882352942) internal successors, (40), 36 states have internal predecessors, (40), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 04:38:46,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2024-11-28 04:38:46,899 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 59 transitions. Word has length 37 [2024-11-28 04:38:46,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:46,899 INFO L471 AbstractCegarLoop]: Abstraction has 48 states and 59 transitions. [2024-11-28 04:38:46,899 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-28 04:38:46,900 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 59 transitions. [2024-11-28 04:38:46,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-28 04:38:46,904 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:46,905 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:46,905 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:38:46,905 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:46,906 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:46,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1616938280, now seen corresponding path program 1 times [2024-11-28 04:38:46,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:46,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893960499] [2024-11-28 04:38:46,906 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:46,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:38:47,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:47,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893960499] [2024-11-28 04:38:47,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893960499] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:47,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955870341] [2024-11-28 04:38:47,026 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:47,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:47,026 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:47,029 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:47,032 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:38:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:47,160 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-28 04:38:47,162 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:38:47,189 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:47,259 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:38:47,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955870341] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:38:47,261 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:38:47,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-28 04:38:47,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429563191] [2024-11-28 04:38:47,262 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:47,262 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:38:47,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:47,263 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:38:47,263 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:38:47,263 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:38:47,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:47,338 INFO L93 Difference]: Finished difference Result 70 states and 88 transitions. [2024-11-28 04:38:47,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:38:47,339 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 40 [2024-11-28 04:38:47,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:47,342 INFO L225 Difference]: With dead ends: 70 [2024-11-28 04:38:47,342 INFO L226 Difference]: Without dead ends: 51 [2024-11-28 04:38:47,342 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 77 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:38:47,343 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 4 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:47,345 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 121 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:38:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2024-11-28 04:38:47,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2024-11-28 04:38:47,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.1891891891891893) internal successors, (44), 39 states have internal predecessors, (44), 10 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 04:38:47,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2024-11-28 04:38:47,361 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 40 [2024-11-28 04:38:47,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:47,362 INFO L471 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2024-11-28 04:38:47,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:38:47,362 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2024-11-28 04:38:47,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-28 04:38:47,363 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:47,364 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:47,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:38:47,568 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:47,568 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:47,569 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:47,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1369003429, now seen corresponding path program 1 times [2024-11-28 04:38:47,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:47,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243086747] [2024-11-28 04:38:47,569 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:47,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:38:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:38:48,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:48,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243086747] [2024-11-28 04:38:48,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243086747] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:38:48,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:38:48,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-28 04:38:48,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267740801] [2024-11-28 04:38:48,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:38:48,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 04:38:48,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:48,168 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 04:38:48,169 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:38:48,169 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 04:38:48,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:48,501 INFO L93 Difference]: Finished difference Result 84 states and 107 transitions. [2024-11-28 04:38:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:38:48,502 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 43 [2024-11-28 04:38:48,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:48,503 INFO L225 Difference]: With dead ends: 84 [2024-11-28 04:38:48,503 INFO L226 Difference]: Without dead ends: 70 [2024-11-28 04:38:48,504 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:38:48,505 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 18 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:48,505 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 300 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:38:48,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-28 04:38:48,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 63. [2024-11-28 04:38:48,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 46 states have (on average 1.1956521739130435) internal successors, (55), 49 states have internal predecessors, (55), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-28 04:38:48,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 78 transitions. [2024-11-28 04:38:48,518 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 78 transitions. Word has length 43 [2024-11-28 04:38:48,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:48,518 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 78 transitions. [2024-11-28 04:38:48,519 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-28 04:38:48,519 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 78 transitions. [2024-11-28 04:38:48,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-28 04:38:48,520 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:48,520 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-28 04:38:48,520 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:38:48,520 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:48,521 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:48,521 INFO L85 PathProgramCache]: Analyzing trace with hash 467139001, now seen corresponding path program 2 times [2024-11-28 04:38:48,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:48,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491488591] [2024-11-28 04:38:48,521 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:38:48,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:48,609 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:38:48,610 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:50,389 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-28 04:38:50,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:38:50,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491488591] [2024-11-28 04:38:50,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491488591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:38:50,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914733053] [2024-11-28 04:38:50,390 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:38:50,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:50,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:38:50,393 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:38:50,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:38:50,530 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:38:50,530 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:38:50,533 INFO L256 TraceCheckSpWp]: Trace formula consists of 199 conjuncts, 56 conjuncts are in the unsatisfiable core [2024-11-28 04:38:50,538 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:38:50,901 INFO L349 Elim1Store]: treesize reduction 29, result has 39.6 percent of original size [2024-11-28 04:38:50,902 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 1 case distinctions, treesize of input 38 treesize of output 19 [2024-11-28 04:38:51,487 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-28 04:38:51,487 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 46 [2024-11-28 04:38:52,018 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 9 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:38:52,019 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:38:52,559 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:38:52,562 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 515 treesize of output 447 [2024-11-28 04:38:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 10 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:38:55,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914733053] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:38:55,791 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:38:55,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 37 [2024-11-28 04:38:55,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247058677] [2024-11-28 04:38:55,791 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:38:55,793 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-28 04:38:55,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:38:55,794 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-28 04:38:55,796 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1202, Unknown=0, NotChecked=0, Total=1332 [2024-11-28 04:38:55,796 INFO L87 Difference]: Start difference. First operand 63 states and 78 transitions. Second operand has 37 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 28 states have internal predecessors, (61), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 04:38:59,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:38:59,467 INFO L93 Difference]: Finished difference Result 122 states and 157 transitions. [2024-11-28 04:38:59,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-11-28 04:38:59,469 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 28 states have internal predecessors, (61), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Word has length 44 [2024-11-28 04:38:59,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:38:59,470 INFO L225 Difference]: With dead ends: 122 [2024-11-28 04:38:59,471 INFO L226 Difference]: Without dead ends: 88 [2024-11-28 04:38:59,473 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=323, Invalid=2127, Unknown=0, NotChecked=0, Total=2450 [2024-11-28 04:38:59,473 INFO L435 NwaCegarLoop]: 34 mSDtfsCounter, 138 mSDsluCounter, 601 mSDsCounter, 0 mSdLazyCounter, 689 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 689 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-28 04:38:59,474 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 635 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 689 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-28 04:38:59,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2024-11-28 04:38:59,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 69. [2024-11-28 04:38:59,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 52 states have (on average 1.1923076923076923) internal successors, (62), 55 states have internal predecessors, (62), 12 states have call successors, (12), 4 states have call predecessors, (12), 4 states have return successors, (11), 9 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-28 04:38:59,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 85 transitions. [2024-11-28 04:38:59,495 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 85 transitions. Word has length 44 [2024-11-28 04:38:59,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:38:59,495 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 85 transitions. [2024-11-28 04:38:59,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 28 states have (on average 2.1785714285714284) internal successors, (61), 28 states have internal predecessors, (61), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 04:38:59,496 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 85 transitions. [2024-11-28 04:38:59,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 04:38:59,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:38:59,497 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:38:59,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:38:59,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:38:59,701 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:38:59,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:38:59,701 INFO L85 PathProgramCache]: Analyzing trace with hash -144999826, now seen corresponding path program 1 times [2024-11-28 04:38:59,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:38:59,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1890423315] [2024-11-28 04:38:59,702 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:38:59,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:38:59,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:00,147 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 04:39:00,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:00,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1890423315] [2024-11-28 04:39:00,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1890423315] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:39:00,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:39:00,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:39:00,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208291582] [2024-11-28 04:39:00,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:39:00,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:39:00,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:00,149 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:39:00,149 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:39:00,150 INFO L87 Difference]: Start difference. First operand 69 states and 85 transitions. Second operand has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-11-28 04:39:00,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:00,391 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2024-11-28 04:39:00,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:39:00,392 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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 50 [2024-11-28 04:39:00,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:00,393 INFO L225 Difference]: With dead ends: 86 [2024-11-28 04:39:00,396 INFO L226 Difference]: Without dead ends: 84 [2024-11-28 04:39:00,396 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:39:00,397 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 12 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 263 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:00,397 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 263 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:39:00,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-28 04:39:00,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 79. [2024-11-28 04:39:00,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 59 states have (on average 1.2033898305084745) internal successors, (71), 62 states have internal predecessors, (71), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 11 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:39:00,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 98 transitions. [2024-11-28 04:39:00,450 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 98 transitions. Word has length 50 [2024-11-28 04:39:00,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:00,450 INFO L471 AbstractCegarLoop]: Abstraction has 79 states and 98 transitions. [2024-11-28 04:39:00,450 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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) [2024-11-28 04:39:00,450 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 98 transitions. [2024-11-28 04:39:00,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-28 04:39:00,451 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:00,452 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:00,452 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:39:00,452 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:00,452 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:00,454 INFO L85 PathProgramCache]: Analyzing trace with hash -143152784, now seen corresponding path program 1 times [2024-11-28 04:39:00,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:00,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118842843] [2024-11-28 04:39:00,455 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:00,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-28 04:39:00,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:00,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118842843] [2024-11-28 04:39:00,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118842843] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:39:00,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:39:00,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:39:00,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102749868] [2024-11-28 04:39:00,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:39:00,738 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:39:00,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:00,739 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:39:00,739 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:39:00,739 INFO L87 Difference]: Start difference. First operand 79 states and 98 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:39:00,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:00,871 INFO L93 Difference]: Finished difference Result 96 states and 119 transitions. [2024-11-28 04:39:00,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:39:00,871 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 50 [2024-11-28 04:39:00,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:00,873 INFO L225 Difference]: With dead ends: 96 [2024-11-28 04:39:00,874 INFO L226 Difference]: Without dead ends: 85 [2024-11-28 04:39:00,875 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:39:00,877 INFO L435 NwaCegarLoop]: 38 mSDtfsCounter, 4 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 169 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:00,877 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 169 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:39:00,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-11-28 04:39:00,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 81. [2024-11-28 04:39:00,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 61 states have (on average 1.1967213114754098) internal successors, (73), 63 states have internal predecessors, (73), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:39:00,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 100 transitions. [2024-11-28 04:39:00,913 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 100 transitions. Word has length 50 [2024-11-28 04:39:00,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:00,913 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 100 transitions. [2024-11-28 04:39:00,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-28 04:39:00,913 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 100 transitions. [2024-11-28 04:39:00,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-28 04:39:00,918 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:00,918 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:00,918 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:39:00,919 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:00,919 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:00,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1577129589, now seen corresponding path program 3 times [2024-11-28 04:39:00,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:00,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433476312] [2024-11-28 04:39:00,919 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:39:00,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:00,951 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 04:39:00,952 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:39:01,025 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 04:39:01,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:01,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433476312] [2024-11-28 04:39:01,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433476312] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:39:01,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:39:01,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:39:01,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932119479] [2024-11-28 04:39:01,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:39:01,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 04:39:01,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:01,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 04:39:01,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:39:01,028 INFO L87 Difference]: Start difference. First operand 81 states and 100 transitions. Second operand has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:39:01,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:01,092 INFO L93 Difference]: Finished difference Result 130 states and 163 transitions. [2024-11-28 04:39:01,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 04:39:01,093 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 51 [2024-11-28 04:39:01,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:01,094 INFO L225 Difference]: With dead ends: 130 [2024-11-28 04:39:01,094 INFO L226 Difference]: Without dead ends: 84 [2024-11-28 04:39:01,095 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-28 04:39:01,095 INFO L435 NwaCegarLoop]: 45 mSDtfsCounter, 2 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 123 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:01,095 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 123 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 04:39:01,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-28 04:39:01,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 82. [2024-11-28 04:39:01,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 62 states have (on average 1.1774193548387097) internal successors, (73), 64 states have internal predecessors, (73), 14 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:39:01,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 100 transitions. [2024-11-28 04:39:01,127 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 100 transitions. Word has length 51 [2024-11-28 04:39:01,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:01,128 INFO L471 AbstractCegarLoop]: Abstraction has 82 states and 100 transitions. [2024-11-28 04:39:01,128 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.8) internal successors, (29), 5 states have internal predecessors, (29), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-28 04:39:01,128 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 100 transitions. [2024-11-28 04:39:01,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 04:39:01,129 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:01,129 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:01,129 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:39:01,130 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:01,130 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:01,133 INFO L85 PathProgramCache]: Analyzing trace with hash -1618093098, now seen corresponding path program 1 times [2024-11-28 04:39:01,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:01,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851674980] [2024-11-28 04:39:01,133 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:01,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:01,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:01,564 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-28 04:39:01,564 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:01,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851674980] [2024-11-28 04:39:01,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [851674980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:01,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487673599] [2024-11-28 04:39:01,565 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:01,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:01,565 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:39:01,568 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:39:01,572 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 04:39:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:01,720 INFO L256 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-28 04:39:01,728 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:39:01,975 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 15 treesize of output 1 [2024-11-28 04:39:02,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-11-28 04:39:02,042 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:39:02,043 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:39:02,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 24 [2024-11-28 04:39:02,460 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-28 04:39:02,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487673599] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:39:02,460 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:39:02,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11, 11] total 20 [2024-11-28 04:39:02,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734337895] [2024-11-28 04:39:02,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:39:02,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 04:39:02,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:02,462 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 04:39:02,462 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2024-11-28 04:39:02,463 INFO L87 Difference]: Start difference. First operand 82 states and 100 transitions. Second operand has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 18 states have internal predecessors, (63), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 04:39:02,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:02,967 INFO L93 Difference]: Finished difference Result 120 states and 149 transitions. [2024-11-28 04:39:02,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 04:39:02,968 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 18 states have internal predecessors, (63), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 53 [2024-11-28 04:39:02,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:02,969 INFO L225 Difference]: With dead ends: 120 [2024-11-28 04:39:02,971 INFO L226 Difference]: Without dead ends: 99 [2024-11-28 04:39:02,972 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 93 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=165, Invalid=647, Unknown=0, NotChecked=0, Total=812 [2024-11-28 04:39:02,973 INFO L435 NwaCegarLoop]: 43 mSDtfsCounter, 14 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 321 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:02,973 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 393 Invalid, 321 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:39:02,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-28 04:39:03,000 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 90. [2024-11-28 04:39:03,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 71 states have internal predecessors, (81), 15 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 12 states have call predecessors, (14), 14 states have call successors, (14) [2024-11-28 04:39:03,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 110 transitions. [2024-11-28 04:39:03,002 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 110 transitions. Word has length 53 [2024-11-28 04:39:03,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:03,003 INFO L471 AbstractCegarLoop]: Abstraction has 90 states and 110 transitions. [2024-11-28 04:39:03,004 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 18 states have internal predecessors, (63), 4 states have call successors, (8), 3 states have call predecessors, (8), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-28 04:39:03,004 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 110 transitions. [2024-11-28 04:39:03,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-28 04:39:03,008 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:03,008 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:03,019 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 04:39:03,210 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-28 04:39:03,210 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:03,211 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:03,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1616246056, now seen corresponding path program 1 times [2024-11-28 04:39:03,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:03,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72746399] [2024-11-28 04:39:03,211 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:03,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:03,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:03,511 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 04:39:03,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:03,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72746399] [2024-11-28 04:39:03,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72746399] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:03,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [548159851] [2024-11-28 04:39:03,512 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:03,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:03,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:39:03,515 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:39:03,519 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 04:39:03,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:03,660 INFO L256 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-28 04:39:03,663 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:39:03,808 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 15 treesize of output 1 [2024-11-28 04:39:03,868 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:39:03,871 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2024-11-28 04:39:03,871 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 04:39:03,871 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [548159851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:39:03,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 04:39:03,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 8 [2024-11-28 04:39:03,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210207995] [2024-11-28 04:39:03,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:39:03,872 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:39:03,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:03,873 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:39:03,873 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:39:03,873 INFO L87 Difference]: Start difference. First operand 90 states and 110 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:39:07,907 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:39:08,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:08,058 INFO L93 Difference]: Finished difference Result 129 states and 151 transitions. [2024-11-28 04:39:08,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:39:08,059 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 53 [2024-11-28 04:39:08,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:08,061 INFO L225 Difference]: With dead ends: 129 [2024-11-28 04:39:08,061 INFO L226 Difference]: Without dead ends: 110 [2024-11-28 04:39:08,061 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 51 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:39:08,062 INFO L435 NwaCegarLoop]: 60 mSDtfsCounter, 21 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:08,066 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 211 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 85 Invalid, 1 Unknown, 0 Unchecked, 4.1s Time] [2024-11-28 04:39:08,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-28 04:39:08,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 107. [2024-11-28 04:39:08,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 83 states have internal predecessors, (92), 18 states have call successors, (18), 9 states have call predecessors, (18), 9 states have return successors, (16), 14 states have call predecessors, (16), 16 states have call successors, (16) [2024-11-28 04:39:08,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 126 transitions. [2024-11-28 04:39:08,098 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 126 transitions. Word has length 53 [2024-11-28 04:39:08,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:08,098 INFO L471 AbstractCegarLoop]: Abstraction has 107 states and 126 transitions. [2024-11-28 04:39:08,099 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 7 states have internal predecessors, (30), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-28 04:39:08,099 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 126 transitions. [2024-11-28 04:39:08,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-28 04:39:08,101 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:08,101 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:08,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 04:39:08,306 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:08,306 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:08,307 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:08,307 INFO L85 PathProgramCache]: Analyzing trace with hash -1745422951, now seen corresponding path program 1 times [2024-11-28 04:39:08,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:08,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262415487] [2024-11-28 04:39:08,308 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:08,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:08,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:08,780 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-28 04:39:08,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:08,780 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262415487] [2024-11-28 04:39:08,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262415487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:39:08,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:39:08,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 04:39:08,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180455521] [2024-11-28 04:39:08,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:39:08,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-28 04:39:08,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:08,782 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-28 04:39:08,782 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-11-28 04:39:08,783 INFO L87 Difference]: Start difference. First operand 107 states and 126 transitions. Second operand has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:39:09,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:09,000 INFO L93 Difference]: Finished difference Result 117 states and 136 transitions. [2024-11-28 04:39:09,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:39:09,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 56 [2024-11-28 04:39:09,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:09,002 INFO L225 Difference]: With dead ends: 117 [2024-11-28 04:39:09,002 INFO L226 Difference]: Without dead ends: 115 [2024-11-28 04:39:09,003 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 04:39:09,003 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 8 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 228 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:09,004 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 228 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:39:09,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2024-11-28 04:39:09,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 113. [2024-11-28 04:39:09,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 83 states have (on average 1.1566265060240963) internal successors, (96), 87 states have internal predecessors, (96), 19 states have call successors, (19), 10 states have call predecessors, (19), 10 states have return successors, (17), 15 states have call predecessors, (17), 17 states have call successors, (17) [2024-11-28 04:39:09,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 132 transitions. [2024-11-28 04:39:09,028 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 132 transitions. Word has length 56 [2024-11-28 04:39:09,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:09,029 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 132 transitions. [2024-11-28 04:39:09,029 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.25) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-28 04:39:09,029 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 132 transitions. [2024-11-28 04:39:09,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-28 04:39:09,030 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:09,030 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:09,030 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:39:09,031 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:09,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:09,031 INFO L85 PathProgramCache]: Analyzing trace with hash -1938540120, now seen corresponding path program 4 times [2024-11-28 04:39:09,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:09,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887066448] [2024-11-28 04:39:09,032 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:39:09,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:09,069 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:39:09,070 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:39:11,140 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 13 proven. 18 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-28 04:39:11,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:11,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887066448] [2024-11-28 04:39:11,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887066448] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:11,140 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [928519730] [2024-11-28 04:39:11,141 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:39:11,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:11,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:39:11,143 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:39:11,148 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 04:39:11,297 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:39:11,297 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:39:11,299 INFO L256 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-28 04:39:11,303 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:39:11,310 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 7 treesize of output 6 [2024-11-28 04:39:11,601 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 40 [2024-11-28 04:39:18,483 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 57 [2024-11-28 04:39:18,663 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 28 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-28 04:39:18,664 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:39:19,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [928519730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:19,968 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 04:39:19,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 27 [2024-11-28 04:39:19,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005381077] [2024-11-28 04:39:19,969 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 04:39:19,969 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-28 04:39:19,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:19,970 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-28 04:39:19,972 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1254, Unknown=2, NotChecked=0, Total=1406 [2024-11-28 04:39:19,972 INFO L87 Difference]: Start difference. First operand 113 states and 132 transitions. Second operand has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:39:23,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:23,836 INFO L93 Difference]: Finished difference Result 162 states and 184 transitions. [2024-11-28 04:39:23,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-11-28 04:39:23,837 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 54 [2024-11-28 04:39:23,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:23,838 INFO L225 Difference]: With dead ends: 162 [2024-11-28 04:39:23,838 INFO L226 Difference]: Without dead ends: 96 [2024-11-28 04:39:23,841 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 59 SyntacticMatches, 6 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=392, Invalid=2258, Unknown=2, NotChecked=0, Total=2652 [2024-11-28 04:39:23,842 INFO L435 NwaCegarLoop]: 35 mSDtfsCounter, 80 mSDsluCounter, 367 mSDsCounter, 0 mSdLazyCounter, 582 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 402 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 582 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:23,842 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 402 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 582 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 04:39:23,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2024-11-28 04:39:23,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 94. [2024-11-28 04:39:23,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 68 states have (on average 1.0735294117647058) internal successors, (73), 70 states have internal predecessors, (73), 15 states have call successors, (15), 11 states have call predecessors, (15), 10 states have return successors, (13), 12 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-28 04:39:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 101 transitions. [2024-11-28 04:39:23,878 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 101 transitions. Word has length 54 [2024-11-28 04:39:23,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:23,878 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 101 transitions. [2024-11-28 04:39:23,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 2.037037037037037) internal successors, (55), 27 states have internal predecessors, (55), 3 states have call successors, (8), 3 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:39:23,879 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 101 transitions. [2024-11-28 04:39:23,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-28 04:39:23,880 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:23,880 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:23,894 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 04:39:24,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:24,081 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:24,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:24,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1661145726, now seen corresponding path program 1 times [2024-11-28 04:39:24,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:24,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917549422] [2024-11-28 04:39:24,082 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:24,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:24,977 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-28 04:39:24,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:24,978 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917549422] [2024-11-28 04:39:24,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917549422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:39:24,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:39:24,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-28 04:39:24,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383148358] [2024-11-28 04:39:24,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:39:24,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 04:39:24,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:24,979 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 04:39:24,979 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:39:24,979 INFO L87 Difference]: Start difference. First operand 94 states and 101 transitions. Second operand has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:39:25,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:25,375 INFO L93 Difference]: Finished difference Result 96 states and 102 transitions. [2024-11-28 04:39:25,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 04:39:25,376 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 62 [2024-11-28 04:39:25,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:25,377 INFO L225 Difference]: With dead ends: 96 [2024-11-28 04:39:25,377 INFO L226 Difference]: Without dead ends: 64 [2024-11-28 04:39:25,377 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-11-28 04:39:25,378 INFO L435 NwaCegarLoop]: 33 mSDtfsCounter, 19 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:25,378 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 181 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:39:25,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2024-11-28 04:39:25,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 64. [2024-11-28 04:39:25,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 47 states have (on average 1.0638297872340425) internal successors, (50), 49 states have internal predecessors, (50), 10 states have call successors, (10), 6 states have call predecessors, (10), 6 states have return successors, (9), 8 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-28 04:39:25,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 69 transitions. [2024-11-28 04:39:25,397 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 69 transitions. Word has length 62 [2024-11-28 04:39:25,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:25,397 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 69 transitions. [2024-11-28 04:39:25,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.0) internal successors, (27), 9 states have internal predecessors, (27), 4 states have call successors, (9), 2 states have call predecessors, (9), 1 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2024-11-28 04:39:25,398 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 69 transitions. [2024-11-28 04:39:25,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-28 04:39:25,398 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:25,399 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:25,399 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 04:39:25,399 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:25,400 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:25,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1902511585, now seen corresponding path program 1 times [2024-11-28 04:39:25,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:25,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610982118] [2024-11-28 04:39:25,400 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:25,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:25,714 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 04:39:25,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:25,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610982118] [2024-11-28 04:39:25,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610982118] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:25,715 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721489303] [2024-11-28 04:39:25,715 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:25,715 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:25,715 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:39:25,718 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:39:25,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 04:39:25,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:25,881 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-28 04:39:25,886 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:39:26,131 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 15 treesize of output 1 [2024-11-28 04:39:26,312 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-28 04:39:26,317 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 04:39:26,317 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:39:26,396 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2024-11-28 04:39:26,730 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-11-28 04:39:26,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721489303] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:39:26,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:39:26,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 13 [2024-11-28 04:39:26,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485395753] [2024-11-28 04:39:26,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:39:26,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:39:26,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:26,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:39:26,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:39:26,734 INFO L87 Difference]: Start difference. First operand 64 states and 69 transitions. Second operand has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:39:27,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:27,083 INFO L93 Difference]: Finished difference Result 74 states and 79 transitions. [2024-11-28 04:39:27,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 04:39:27,083 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 60 [2024-11-28 04:39:27,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:27,085 INFO L225 Difference]: With dead ends: 74 [2024-11-28 04:39:27,085 INFO L226 Difference]: Without dead ends: 63 [2024-11-28 04:39:27,085 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 111 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2024-11-28 04:39:27,086 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 18 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 204 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:27,086 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 204 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:39:27,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2024-11-28 04:39:27,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2024-11-28 04:39:27,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 47 states have (on average 1.0425531914893618) internal successors, (49), 48 states have internal predecessors, (49), 9 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 04:39:27,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 66 transitions. [2024-11-28 04:39:27,108 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 66 transitions. Word has length 60 [2024-11-28 04:39:27,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:27,110 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 66 transitions. [2024-11-28 04:39:27,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.615384615384615) internal successors, (60), 13 states have internal predecessors, (60), 4 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2024-11-28 04:39:27,110 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 66 transitions. [2024-11-28 04:39:27,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 04:39:27,111 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:27,111 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:27,123 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 04:39:27,311 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:27,312 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:27,312 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:27,313 INFO L85 PathProgramCache]: Analyzing trace with hash -377501944, now seen corresponding path program 1 times [2024-11-28 04:39:27,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:27,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035156914] [2024-11-28 04:39:27,313 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:27,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:27,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:27,712 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2024-11-28 04:39:27,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:27,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035156914] [2024-11-28 04:39:27,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035156914] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:39:27,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:39:27,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 04:39:27,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905810700] [2024-11-28 04:39:27,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:39:27,715 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 04:39:27,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:39:27,716 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 04:39:27,716 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-28 04:39:27,716 INFO L87 Difference]: Start difference. First operand 63 states and 66 transitions. Second operand has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:39:27,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:39:27,950 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2024-11-28 04:39:27,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:39:27,951 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2024-11-28 04:39:27,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:39:27,952 INFO L225 Difference]: With dead ends: 69 [2024-11-28 04:39:27,952 INFO L226 Difference]: Without dead ends: 65 [2024-11-28 04:39:27,952 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 04:39:27,953 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 4 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:39:27,953 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 211 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:39:27,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2024-11-28 04:39:27,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2024-11-28 04:39:27,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 49 states have (on average 1.0204081632653061) internal successors, (50), 49 states have internal predecessors, (50), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 04:39:27,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 67 transitions. [2024-11-28 04:39:27,974 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 67 transitions. Word has length 66 [2024-11-28 04:39:27,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:39:27,974 INFO L471 AbstractCegarLoop]: Abstraction has 65 states and 67 transitions. [2024-11-28 04:39:27,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 3 states have call successors, (8), 2 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-28 04:39:27,974 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 67 transitions. [2024-11-28 04:39:27,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-28 04:39:27,975 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:39:27,975 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:39:27,976 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-28 04:39:27,976 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:39:27,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:39:27,976 INFO L85 PathProgramCache]: Analyzing trace with hash -1900499023, now seen corresponding path program 1 times [2024-11-28 04:39:27,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:39:27,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497427818] [2024-11-28 04:39:27,977 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:27,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:39:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:29,814 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-11-28 04:39:29,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:39:29,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497427818] [2024-11-28 04:39:29,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497427818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:39:29,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1091177061] [2024-11-28 04:39:29,815 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:39:29,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:39:29,815 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:39:29,818 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:39:29,822 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 04:39:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:39:30,013 INFO L256 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 91 conjuncts are in the unsatisfiable core [2024-11-28 04:39:30,020 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:39:30,030 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 7 treesize of output 6 [2024-11-28 04:39:30,596 INFO L349 Elim1Store]: treesize reduction 49, result has 15.5 percent of original size [2024-11-28 04:39:30,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 51 treesize of output 53 [2024-11-28 04:39:41,083 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 11 treesize of output 7 [2024-11-28 04:39:41,091 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 11 treesize of output 7 [2024-11-28 04:41:22,487 WARN L286 SmtUtils]: Spent 8.54s on a formula simplification that was a NOOP. DAG size: 189 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:41:32,367 WARN L286 SmtUtils]: Spent 9.80s on a formula simplification that was a NOOP. DAG size: 73 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-28 04:41:32,367 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 04:41:32,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 409 treesize of output 441 [2024-11-28 04:41:37,004 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 35 proven. 25 refuted. 4 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-28 04:41:37,004 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:41:37,719 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 80 [2024-11-28 04:41:37,725 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 138 treesize of output 130 [2024-11-28 04:41:47,730 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 14 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-28 04:41:47,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1091177061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:41:47,731 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:41:47,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 29, 15] total 48 [2024-11-28 04:41:47,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126398010] [2024-11-28 04:41:47,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:41:47,732 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 04:41:47,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:41:47,733 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 04:41:47,733 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=260, Invalid=1975, Unknown=21, NotChecked=0, Total=2256 [2024-11-28 04:41:47,734 INFO L87 Difference]: Start difference. First operand 65 states and 67 transitions. Second operand has 48 states, 46 states have (on average 2.3043478260869565) internal successors, (106), 44 states have internal predecessors, (106), 10 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-28 04:42:02,436 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:42:14,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:42:18,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:42:35,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:42:55,844 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:43:12,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:43:41,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:44:36,083 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:44:40,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:44:44,173 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:44:48,204 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:44:52,239 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:44:56,255 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:45:24,739 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:45:28,770 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:45:32,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:45:36,830 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:45:40,855 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:45:53,905 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:45:57,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:46:02,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:46:06,499 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:46:10,519 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:46:14,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:46:18,592 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:46:22,607 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:46:26,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:46:30,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:05,146 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:09,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:13,921 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:18,524 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:22,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:25,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.36s for a HTC check with result VALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:29,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:34,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:38,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:42,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:47,371 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:52,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.13s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:47:56,756 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:48:22,529 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:48:26,710 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:48:30,963 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:49:03,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:49:07,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:49:11,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:49:16,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:49:20,271 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:49:24,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:49:28,573 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:50:00,877 WARN L286 SmtUtils]: Spent 10.78s on a formula simplification. DAG size of input: 200 DAG size of output: 188 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-28 04:50:07,508 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.46s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 04:50:14,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:50:17,236 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0, 1] [2024-11-28 04:50:27,759 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:50:36,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-28 04:50:41,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:50:41,237 INFO L93 Difference]: Finished difference Result 106 states and 109 transitions. [2024-11-28 04:50:41,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2024-11-28 04:50:41,238 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 46 states have (on average 2.3043478260869565) internal successors, (106), 44 states have internal predecessors, (106), 10 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) Word has length 72 [2024-11-28 04:50:41,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:50:41,238 INFO L225 Difference]: With dead ends: 106 [2024-11-28 04:50:41,238 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 04:50:41,240 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 188 GetRequests, 105 SyntacticMatches, 8 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1472 ImplicationChecksByTransitivity, 406.0s TimeCoverageRelationStatistics Valid=696, Invalid=5073, Unknown=83, NotChecked=0, Total=5852 [2024-11-28 04:50:41,241 INFO L435 NwaCegarLoop]: 30 mSDtfsCounter, 73 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 1257 mSolverCounterSat, 23 mSolverCounterUnsat, 52 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 240.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 493 SdHoareTripleChecker+Invalid, 1332 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 1257 IncrementalHoareTripleChecker+Invalid, 52 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 242.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:50:41,241 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 493 Invalid, 1332 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 1257 Invalid, 52 Unknown, 0 Unchecked, 242.6s Time] [2024-11-28 04:50:41,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 04:50:41,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 04:50:41,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:50:41,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 04:50:41,243 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 72 [2024-11-28 04:50:41,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:50:41,243 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 04:50:41,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 46 states have (on average 2.3043478260869565) internal successors, (106), 44 states have internal predecessors, (106), 10 states have call successors, (24), 8 states have call predecessors, (24), 7 states have return successors, (22), 10 states have call predecessors, (22), 9 states have call successors, (22) [2024-11-28 04:50:41,243 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 04:50:41,244 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 04:50:41,247 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 04:50:41,259 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 04:50:41,451 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8cc2ba7c-755c-4288-9622-a06be2bc1800/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 04:50:41,454 INFO L422 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:50:41,456 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 04:52:31,476 WARN L286 SmtUtils]: Spent 1.83m on a formula simplification. DAG size of input: 155 DAG size of output: 95 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-11-28 04:52:39,813 WARN L286 SmtUtils]: Spent 8.28s on a formula simplification. DAG size of input: 224 DAG size of output: 52 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter) [2024-11-28 04:52:48,133 WARN L286 SmtUtils]: Spent 8.32s on a formula simplification. DAG size of input: 109 DAG size of output: 49 (called from [L 162] de.uni_freiburg.informatik.ultimate.lib.proofs.floydhoare.HoareAnnotationComposer.combineInter)