./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/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_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_3.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/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_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/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 7a78b2f82c5c523b03c70ba898547797b8578723f2b367d871b1e6ef867cb4b5 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:50:21,883 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:50:21,966 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 19:50:21,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:50:21,975 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:50:22,013 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:50:22,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:50:22,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:50:22,016 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:50:22,016 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:50:22,017 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:50:22,017 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:50:22,018 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:50:22,018 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:50:22,019 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:50:22,019 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:50:22,020 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:50:22,020 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 19:50:22,020 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:50:22,020 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 19:50:22,020 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:50:22,020 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:50:22,020 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:50:22,020 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:50:22,020 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 19:50:22,021 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:50:22,021 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:50:22,021 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:50:22,021 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:50:22,021 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:22,021 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:22,021 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:22,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:22,022 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:50:22,022 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:50:22,023 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:50:22,023 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:50:22,023 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:22,023 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:50:22,023 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:50:22,023 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:50:22,023 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:50:22,024 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:50:22,024 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:50:22,024 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:50:22,024 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:50:22,024 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:50:22,024 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:50:22,024 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_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/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 -> 7a78b2f82c5c523b03c70ba898547797b8578723f2b367d871b1e6ef867cb4b5 [2024-11-27 19:50:22,364 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:50:22,376 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:50:22,382 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:50:22,384 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:50:22,384 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:50:22,387 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_3.i [2024-11-27 19:50:25,523 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/data/07cd6b2c2/01042958de2f40e69806cb64182c5c12/FLAGd05c46124 [2024-11-27 19:50:25,807 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:50:25,808 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_3.i [2024-11-27 19:50:25,817 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/data/07cd6b2c2/01042958de2f40e69806cb64182c5c12/FLAGd05c46124 [2024-11-27 19:50:25,845 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/data/07cd6b2c2/01042958de2f40e69806cb64182c5c12 [2024-11-27 19:50:25,848 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:50:25,851 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:50:25,852 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:25,854 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:50:25,858 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:50:25,860 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:25" (1/1) ... [2024-11-27 19:50:25,861 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@521d1dec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:25, skipping insertion in model container [2024-11-27 19:50:25,861 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:50:25" (1/1) ... [2024-11-27 19:50:25,880 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:50:26,076 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_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_3.i[1898,1911] [2024-11-27 19:50:26,106 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:26,120 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:50:26,135 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_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/sv-benchmarks/c/recursified_loop-crafted/recursified_simple_array_index_value_3.i[1898,1911] [2024-11-27 19:50:26,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:50:26,173 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:50:26,175 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:26 WrapperNode [2024-11-27 19:50:26,176 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:50:26,177 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:26,178 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:50:26,178 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:50:26,185 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:26" (1/1) ... [2024-11-27 19:50:26,193 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:26" (1/1) ... [2024-11-27 19:50:26,215 INFO L138 Inliner]: procedures = 18, calls = 36, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2024-11-27 19:50:26,216 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:50:26,217 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:50:26,217 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:50:26,217 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:50:26,229 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:26" (1/1) ... [2024-11-27 19:50:26,229 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:26" (1/1) ... [2024-11-27 19:50:26,231 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:26" (1/1) ... [2024-11-27 19:50:26,251 INFO L175 MemorySlicer]: Split 21 memory accesses to 4 slices as follows [2, 12, 4, 3]. 57 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 1, 1, 0]. The 5 writes are split as follows [0, 3, 1, 1]. [2024-11-27 19:50:26,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:26" (1/1) ... [2024-11-27 19:50:26,255 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:26" (1/1) ... [2024-11-27 19:50:26,264 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:26" (1/1) ... [2024-11-27 19:50:26,269 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:26" (1/1) ... [2024-11-27 19:50:26,271 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:26" (1/1) ... [2024-11-27 19:50:26,276 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:26" (1/1) ... [2024-11-27 19:50:26,277 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:26" (1/1) ... [2024-11-27 19:50:26,279 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:50:26,279 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:50:26,279 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:50:26,280 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:50:26,285 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:26" (1/1) ... [2024-11-27 19:50:26,292 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:50:26,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:26,325 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:50:26,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:50:26,359 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:50:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:50:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 19:50:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-27 19:50:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-27 19:50:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-27 19:50:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 19:50:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 19:50:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-27 19:50:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-27 19:50:26,360 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_38_to_41_0 [2024-11-27 19:50:26,360 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_38_to_41_0 [2024-11-27 19:50:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_44_to_45_0 [2024-11-27 19:50:26,361 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_44_to_45_0 [2024-11-27 19:50:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:50:26,361 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:50:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 19:50:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 19:50:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-27 19:50:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-27 19:50:26,361 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-27 19:50:26,471 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:50:26,475 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:50:26,748 INFO L? ?]: Removed 11 outVars from TransFormulas that were not future-live. [2024-11-27 19:50:26,752 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:50:26,762 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:50:26,763 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-27 19:50:26,763 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:26 BoogieIcfgContainer [2024-11-27 19:50:26,763 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:50:26,767 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:50:26,767 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:50:26,773 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:50:26,773 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:50:25" (1/3) ... [2024-11-27 19:50:26,774 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db3c8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:26, skipping insertion in model container [2024-11-27 19:50:26,775 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:50:26" (2/3) ... [2024-11-27 19:50:26,775 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@db3c8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:50:26, skipping insertion in model container [2024-11-27 19:50:26,776 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:50:26" (3/3) ... [2024-11-27 19:50:26,778 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_simple_array_index_value_3.i [2024-11-27 19:50:26,799 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:50:26,801 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_simple_array_index_value_3.i that has 3 procedures, 25 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-27 19:50:26,879 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:50:26,896 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;@745e25e2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:50:26,896 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 19:50:26,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-27 19:50:26,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-27 19:50:26,910 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:26,911 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:26,911 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:26,917 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:26,919 INFO L85 PathProgramCache]: Analyzing trace with hash 1413062803, now seen corresponding path program 1 times [2024-11-27 19:50:26,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:26,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300256017] [2024-11-27 19:50:26,929 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:26,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:27,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:27,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:27,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300256017] [2024-11-27 19:50:27,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300256017] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:50:27,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:50:27,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 19:50:27,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630167018] [2024-11-27 19:50:27,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:50:27,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 19:50:27,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:27,921 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 19:50:27,922 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-27 19:50:27,924 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 20 states have internal predecessors, (22), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 19:50:28,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:28,121 INFO L93 Difference]: Finished difference Result 47 states and 59 transitions. [2024-11-27 19:50:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:50:28,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-27 19:50:28,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:28,134 INFO L225 Difference]: With dead ends: 47 [2024-11-27 19:50:28,135 INFO L226 Difference]: Without dead ends: 21 [2024-11-27 19:50:28,139 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:50:28,145 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 11 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:28,146 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 56 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:50:28,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-27 19:50:28,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-27 19:50:28,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 16 states have internal predecessors, (17), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-27 19:50:28,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-27 19:50:28,196 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2024-11-27 19:50:28,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:28,198 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-27 19:50:28,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-27 19:50:28,199 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-27 19:50:28,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-27 19:50:28,200 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:28,200 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:28,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 19:50:28,201 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:28,201 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:28,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1244657017, now seen corresponding path program 1 times [2024-11-27 19:50:28,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:28,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005051484] [2024-11-27 19:50:28,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:28,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:28,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:28,944 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 19:50:28,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:28,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005051484] [2024-11-27 19:50:28,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005051484] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:28,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408207169] [2024-11-27 19:50:28,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:50:28,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:28,947 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:28,950 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:28,952 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:50:29,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:50:29,139 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-27 19:50:29,147 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:29,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 19:50:29,439 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:30,156 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:50:30,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408207169] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:30,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:30,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 10] total 21 [2024-11-27 19:50:30,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1876126827] [2024-11-27 19:50:30,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:30,161 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-27 19:50:30,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:30,162 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-27 19:50:30,162 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2024-11-27 19:50:30,162 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 21 states, 16 states have (on average 1.6875) internal successors, (27), 18 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-27 19:50:30,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:30,551 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2024-11-27 19:50:30,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-27 19:50:30,553 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 16 states have (on average 1.6875) internal successors, (27), 18 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 20 [2024-11-27 19:50:30,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:30,554 INFO L225 Difference]: With dead ends: 36 [2024-11-27 19:50:30,555 INFO L226 Difference]: Without dead ends: 25 [2024-11-27 19:50:30,555 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=117, Invalid=483, Unknown=0, NotChecked=0, Total=600 [2024-11-27 19:50:30,557 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 24 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:30,558 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 111 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:50:30,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-27 19:50:30,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-11-27 19:50:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 16 states have (on average 1.1875) internal successors, (19), 18 states have internal predecessors, (19), 4 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-27 19:50:30,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2024-11-27 19:50:30,569 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 20 [2024-11-27 19:50:30,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:30,572 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2024-11-27 19:50:30,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 16 states have (on average 1.6875) internal successors, (27), 18 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2024-11-27 19:50:30,572 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2024-11-27 19:50:30,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-27 19:50:30,575 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:30,575 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:30,587 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 19:50:30,779 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:30,779 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:30,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:30,780 INFO L85 PathProgramCache]: Analyzing trace with hash -427815883, now seen corresponding path program 2 times [2024-11-27 19:50:30,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:30,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [112267809] [2024-11-27 19:50:30,780 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 19:50:30,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:30,847 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 19:50:30,848 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:50:31,965 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-27 19:50:31,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:31,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [112267809] [2024-11-27 19:50:31,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [112267809] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:31,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [113984145] [2024-11-27 19:50:31,966 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 19:50:31,966 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:31,966 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:31,968 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:31,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 19:50:32,262 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 19:50:32,262 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:50:32,268 WARN L254 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 152 conjuncts are in the unsatisfiable core [2024-11-27 19:50:32,278 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:32,537 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 25 treesize of output 21 [2024-11-27 19:50:33,443 INFO L349 Elim1Store]: treesize reduction 213, result has 7.4 percent of original size [2024-11-27 19:50:33,443 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 2 case distinctions, treesize of input 92 treesize of output 25 [2024-11-27 19:50:33,570 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 7 treesize of output 3 [2024-11-27 19:50:33,634 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 [2024-11-27 19:50:33,968 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 19:50:33,969 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:37,834 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:37,836 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:37,838 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:37,866 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:50:37,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 138 treesize of output 168 [2024-11-27 19:50:37,928 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:37,930 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:37,931 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:37,934 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:37,936 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:37,945 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:50:37,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 5 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 101 treesize of output 65 [2024-11-27 19:50:37,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 8 [2024-11-27 19:50:39,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [113984145] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:39,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:50:39,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20] total 31 [2024-11-27 19:50:39,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374282774] [2024-11-27 19:50:39,469 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:39,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-27 19:50:39,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:39,472 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-27 19:50:39,474 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1361, Unknown=0, NotChecked=0, Total=1482 [2024-11-27 19:50:39,476 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand has 31 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 26 states have internal predecessors, (38), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-27 19:50:41,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:41,469 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2024-11-27 19:50:41,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-27 19:50:41,472 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 26 states have internal predecessors, (38), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) Word has length 30 [2024-11-27 19:50:41,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:41,473 INFO L225 Difference]: With dead ends: 51 [2024-11-27 19:50:41,473 INFO L226 Difference]: Without dead ends: 36 [2024-11-27 19:50:41,476 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 646 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=288, Invalid=2682, Unknown=0, NotChecked=0, Total=2970 [2024-11-27 19:50:41,478 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 45 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 142 SdHoareTripleChecker+Invalid, 608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:41,480 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 142 Invalid, 608 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-27 19:50:41,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2024-11-27 19:50:41,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2024-11-27 19:50:41,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 23 states have (on average 1.1304347826086956) internal successors, (26), 24 states have internal predecessors, (26), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2024-11-27 19:50:41,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2024-11-27 19:50:41,495 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 30 [2024-11-27 19:50:41,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:41,495 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2024-11-27 19:50:41,496 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 24 states have (on average 1.5833333333333333) internal successors, (38), 26 states have internal predecessors, (38), 9 states have call successors, (9), 6 states have call predecessors, (9), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2024-11-27 19:50:41,496 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2024-11-27 19:50:41,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-27 19:50:41,497 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:41,497 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:41,505 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 19:50:41,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:41,698 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:41,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:41,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1371036561, now seen corresponding path program 3 times [2024-11-27 19:50:41,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:41,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077235073] [2024-11-27 19:50:41,699 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 19:50:41,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:41,766 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 19:50:41,766 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:50:43,086 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 8 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-27 19:50:43,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:43,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077235073] [2024-11-27 19:50:43,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077235073] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:43,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731094954] [2024-11-27 19:50:43,087 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 19:50:43,087 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:43,087 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:43,089 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:43,093 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 19:50:43,536 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-27 19:50:43,536 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:50:43,546 WARN L254 TraceCheckSpWp]: Trace formula consists of 321 conjuncts, 183 conjuncts are in the unsatisfiable core [2024-11-27 19:50:43,555 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:43,733 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 79 treesize of output 66 [2024-11-27 19:50:43,744 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 21 [2024-11-27 19:50:43,778 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 23 treesize of output 22 [2024-11-27 19:50:45,214 INFO L349 Elim1Store]: treesize reduction 475, result has 8.3 percent of original size [2024-11-27 19:50:45,214 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 4 case distinctions, treesize of input 156 treesize of output 96 [2024-11-27 19:50:45,764 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 7 treesize of output 3 [2024-11-27 19:50:45,835 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 [2024-11-27 19:50:46,315 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-27 19:50:46,315 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:52,638 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:52,640 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:52,641 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:52,644 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:52,645 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:52,647 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:52,650 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:52,719 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:50:52,720 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 4 stores, 0 select indices, 0 select index equivalence classes, 15 disjoint index pairs (out of 0 index pairs), introduced 4 new quantified variables, introduced 16 case distinctions, treesize of input 383 treesize of output 498 [2024-11-27 19:50:53,035 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,036 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,039 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,041 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,042 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,044 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,048 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,049 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,083 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:50:53,084 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 8 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 2 case distinctions, treesize of input 529 treesize of output 448 [2024-11-27 19:50:53,097 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,099 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,100 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,102 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 462 treesize of output 378 [2024-11-27 19:50:53,118 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,119 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,120 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,123 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,124 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,125 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,126 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 359 treesize of output 249 [2024-11-27 19:50:53,412 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,413 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:50:53,413 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 225 treesize of output 140 [2024-11-27 19:50:53,442 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:50:53,442 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 50 treesize of output 19 [2024-11-27 19:50:56,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731094954] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:56,922 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:50:56,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 24] total 38 [2024-11-27 19:50:56,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464731629] [2024-11-27 19:50:56,923 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:56,923 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-27 19:50:56,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:56,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-27 19:50:56,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=164, Invalid=1998, Unknown=0, NotChecked=0, Total=2162 [2024-11-27 19:50:56,928 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand has 38 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 32 states have internal predecessors, (43), 11 states have call successors, (11), 7 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-27 19:51:02,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:51:02,187 INFO L93 Difference]: Finished difference Result 58 states and 68 transitions. [2024-11-27 19:51:02,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-27 19:51:02,188 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 32 states have internal predecessors, (43), 11 states have call successors, (11), 7 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) Word has length 35 [2024-11-27 19:51:02,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:51:02,190 INFO L225 Difference]: With dead ends: 58 [2024-11-27 19:51:02,190 INFO L226 Difference]: Without dead ends: 43 [2024-11-27 19:51:02,192 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1000 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=406, Invalid=4016, Unknown=0, NotChecked=0, Total=4422 [2024-11-27 19:51:02,193 INFO L435 NwaCegarLoop]: 13 mSDtfsCounter, 50 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 162 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:51:02,193 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 162 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2024-11-27 19:51:02,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2024-11-27 19:51:02,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 37. [2024-11-27 19:51:02,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 24 states have (on average 1.125) internal successors, (27), 26 states have internal predecessors, (27), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2024-11-27 19:51:02,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2024-11-27 19:51:02,213 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 35 [2024-11-27 19:51:02,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:51:02,214 INFO L471 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2024-11-27 19:51:02,214 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 29 states have (on average 1.4827586206896552) internal successors, (43), 32 states have internal predecessors, (43), 11 states have call successors, (11), 7 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-27 19:51:02,214 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2024-11-27 19:51:02,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-11-27 19:51:02,215 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:51:02,215 INFO L218 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:51:02,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 19:51:02,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:02,416 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:51:02,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:51:02,416 INFO L85 PathProgramCache]: Analyzing trace with hash -1807343901, now seen corresponding path program 4 times [2024-11-27 19:51:02,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:51:02,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [307764264] [2024-11-27 19:51:02,417 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 19:51:02,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:51:02,456 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 19:51:02,456 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:51:03,905 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 19:51:03,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:51:03,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [307764264] [2024-11-27 19:51:03,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [307764264] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:51:03,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032255187] [2024-11-27 19:51:03,905 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 19:51:03,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:51:03,906 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:51:03,909 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:51:03,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 19:51:04,141 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 19:51:04,142 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:51:04,145 INFO L256 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-27 19:51:04,149 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:51:04,686 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-27 19:51:04,686 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:51:47,596 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:51:47,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032255187] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:51:47,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:51:47,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 26] total 47 [2024-11-27 19:51:47,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412305802] [2024-11-27 19:51:47,597 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:51:47,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2024-11-27 19:51:47,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:51:47,598 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2024-11-27 19:51:47,599 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1957, Unknown=10, NotChecked=0, Total=2162 [2024-11-27 19:51:47,599 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand has 47 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 40 states have internal predecessors, (50), 11 states have call successors, (11), 8 states have call predecessors, (11), 18 states have return successors, (18), 16 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-27 19:51:51,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:51:55,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:51:59,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:52:03,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:52:07,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:52:11,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:52:15,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:52:19,841 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:52:55,909 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:52:59,914 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:53:03,919 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:53:07,922 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:53:11,927 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:53:15,933 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:53:19,937 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:53:23,942 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:53:27,955 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:53:31,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:53:35,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:53:39,971 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:53:43,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:53:47,990 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:53:51,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:53:56,000 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:54:00,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:54:04,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:54:08,014 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:54:12,018 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:54:16,036 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:54:20,040 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:54:24,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:54:28,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:54:32,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:54:36,080 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:54:40,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:54:44,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:54:48,109 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:54:52,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:54:56,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:55:00,145 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:55:00,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:55:00,558 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2024-11-27 19:55:00,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-27 19:55:00,558 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 40 states have internal predecessors, (50), 11 states have call successors, (11), 8 states have call predecessors, (11), 18 states have return successors, (18), 16 states have call predecessors, (18), 10 states have call successors, (18) Word has length 40 [2024-11-27 19:55:00,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:55:00,560 INFO L225 Difference]: With dead ends: 62 [2024-11-27 19:55:00,560 INFO L226 Difference]: Without dead ends: 45 [2024-11-27 19:55:00,561 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 762 ImplicationChecksByTransitivity, 73.8s TimeCoverageRelationStatistics Valid=265, Invalid=2369, Unknown=18, NotChecked=0, Total=2652 [2024-11-27 19:55:00,562 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 29 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 9 mSolverCounterUnsat, 40 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 160.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 40 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 160.7s IncrementalHoareTripleChecker+Time [2024-11-27 19:55:00,562 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 347 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 478 Invalid, 40 Unknown, 0 Unchecked, 160.7s Time] [2024-11-27 19:55:00,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-27 19:55:00,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2024-11-27 19:55:00,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.12) internal successors, (28), 27 states have internal predecessors, (28), 6 states have call successors, (6), 4 states have call predecessors, (6), 7 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-27 19:55:00,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2024-11-27 19:55:00,576 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 40 [2024-11-27 19:55:00,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:55:00,576 INFO L471 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2024-11-27 19:55:00,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 37 states have (on average 1.3513513513513513) internal successors, (50), 40 states have internal predecessors, (50), 11 states have call successors, (11), 8 states have call predecessors, (11), 18 states have return successors, (18), 16 states have call predecessors, (18), 10 states have call successors, (18) [2024-11-27 19:55:00,577 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2024-11-27 19:55:00,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-27 19:55:00,578 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:55:00,578 INFO L218 NwaCegarLoop]: trace histogram [7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:55:00,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 19:55:00,782 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:00,782 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:55:00,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:55:00,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1669453859, now seen corresponding path program 5 times [2024-11-27 19:55:00,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:55:00,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [976918867] [2024-11-27 19:55:00,783 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 19:55:00,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:55:00,914 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-27 19:55:00,914 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:55:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 10 proven. 48 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2024-11-27 19:55:02,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:55:02,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [976918867] [2024-11-27 19:55:02,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [976918867] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:55:02,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310676596] [2024-11-27 19:55:02,575 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 19:55:02,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:02,575 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:55:02,577 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:55:02,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 19:55:04,524 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-27 19:55:04,524 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:55:04,534 WARN L254 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 259 conjuncts are in the unsatisfiable core [2024-11-27 19:55:04,548 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:55:04,867 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 25 treesize of output 21 [2024-11-27 19:55:11,419 INFO L349 Elim1Store]: treesize reduction 1267, result has 1.3 percent of original size [2024-11-27 19:55:11,420 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 5 case distinctions, treesize of input 185 treesize of output 25 [2024-11-27 19:55:11,673 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 7 treesize of output 3 [2024-11-27 19:55:11,913 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 [2024-11-27 19:55:13,110 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 77 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2024-11-27 19:55:13,111 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:55:31,270 WARN L286 SmtUtils]: Spent 8.94s on a formula simplification. DAG size of input: 128 DAG size of output: 126 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-27 19:56:03,425 WARN L286 SmtUtils]: Spent 24.21s on a formula simplification. DAG size of input: 141 DAG size of output: 139 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-27 19:56:18,170 WARN L286 SmtUtils]: Spent 11.22s on a formula simplification that was a NOOP. DAG size: 113 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-27 19:56:25,630 WARN L286 SmtUtils]: Spent 7.46s on a formula simplification that was a NOOP. DAG size: 109 (called from [L 299] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-27 19:56:26,086 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,087 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,090 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,093 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,095 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,098 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,101 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,104 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,108 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,111 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,114 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,117 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,119 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,122 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,125 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,127 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,129 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,131 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,137 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,139 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:26,144 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:28,028 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:56:28,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 16 stores, 0 select indices, 0 select index equivalence classes, 45 disjoint index pairs (out of 0 index pairs), introduced 16 new quantified variables, introduced 96 case distinctions, treesize of input 2023 treesize of output 3504 [2024-11-27 19:56:31,223 INFO L224 Elim1Store]: Index analysis took 135 ms [2024-11-27 19:56:31,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 10 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 383 treesize of output 462 [2024-11-27 19:56:31,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 2 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 223 treesize of output 190 [2024-11-27 19:56:31,681 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,683 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,684 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,686 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,689 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,690 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,693 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,695 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,696 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,698 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,710 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:56:31,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 196 treesize of output 101 [2024-11-27 19:56:31,902 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,905 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,907 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,909 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,911 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,914 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:31,916 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 101 [2024-11-27 19:56:32,105 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,107 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,110 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,112 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,114 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,116 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,119 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 101 [2024-11-27 19:56:32,247 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,248 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,250 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,253 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,254 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,255 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,257 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,259 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,261 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,263 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,264 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 542 treesize of output 305 [2024-11-27 19:56:32,356 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,358 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,359 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,365 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,367 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,370 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,372 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 186 treesize of output 101 [2024-11-27 19:56:32,505 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,506 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,508 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,509 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,513 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,516 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,518 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,520 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,523 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,525 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,527 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 101 [2024-11-27 19:56:32,690 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,693 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,696 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,700 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,705 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,707 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,710 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 716 treesize of output 399 [2024-11-27 19:56:32,851 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,852 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,854 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,857 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,859 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,862 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,864 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,866 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 416 treesize of output 227 [2024-11-27 19:56:32,944 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,946 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,948 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,950 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,952 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,953 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,956 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:32,959 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 185 treesize of output 99 [2024-11-27 19:56:33,016 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,019 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,020 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,022 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,029 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,032 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,033 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,035 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 348 treesize of output 194 [2024-11-27 19:56:33,070 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,071 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,072 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,073 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,074 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,075 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,077 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,078 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 319 treesize of output 175 [2024-11-27 19:56:33,104 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,106 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,108 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,109 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,112 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,114 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 184 treesize of output 99 [2024-11-27 19:56:33,139 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,141 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,142 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,143 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,145 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,147 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,150 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,153 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,155 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,157 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,159 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 311 treesize of output 172 [2024-11-27 19:56:33,180 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,183 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,186 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,189 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,191 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,193 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,195 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,196 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 15 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 0 case distinctions, treesize of input 216 treesize of output 118 [2024-11-27 19:56:33,206 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,208 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,210 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,213 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,214 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,216 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,220 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,222 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,223 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,225 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,226 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,229 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,231 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,234 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,236 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,238 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,240 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,242 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,245 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,247 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-27 19:56:33,258 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-27 19:56:33,258 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 20 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 1 case distinctions, treesize of input 190 treesize of output 120 [2024-11-27 19:56:33,265 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 20 treesize of output 8 [2024-11-27 19:56:49,653 WARN L286 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 128 DAG size of output: 126 (called from [L 276] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2024-11-27 19:57:03,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310676596] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:57:03,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-27 19:57:03,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 23] total 37 [2024-11-27 19:57:03,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734820236] [2024-11-27 19:57:03,564 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-27 19:57:03,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-27 19:57:03,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:57:03,566 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-27 19:57:03,566 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=1844, Unknown=0, NotChecked=0, Total=1980 [2024-11-27 19:57:03,567 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand has 37 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 32 states have internal predecessors, (44), 9 states have call successors, (9), 6 states have call predecessors, (9), 14 states have return successors, (14), 14 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-27 19:58:04,282 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.03s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:58:13,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:58:18,247 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.62s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 19:58:22,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:58:22,799 INFO L93 Difference]: Finished difference Result 78 states and 101 transitions. [2024-11-27 19:58:22,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-27 19:58:22,800 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 32 states have internal predecessors, (44), 9 states have call successors, (9), 6 states have call predecessors, (9), 14 states have return successors, (14), 14 states have call predecessors, (14), 7 states have call successors, (14) Word has length 45 [2024-11-27 19:58:22,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:58:22,802 INFO L225 Difference]: With dead ends: 78 [2024-11-27 19:58:22,802 INFO L226 Difference]: Without dead ends: 55 [2024-11-27 19:58:22,804 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1078 ImplicationChecksByTransitivity, 41.1s TimeCoverageRelationStatistics Valid=504, Invalid=4751, Unknown=1, NotChecked=0, Total=5256 [2024-11-27 19:58:22,805 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 69 mSDsluCounter, 216 mSDsCounter, 0 mSdLazyCounter, 840 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 50.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 231 SdHoareTripleChecker+Invalid, 917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 840 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 51.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:58:22,805 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 231 Invalid, 917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 840 Invalid, 0 Unknown, 0 Unchecked, 51.0s Time] [2024-11-27 19:58:22,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2024-11-27 19:58:22,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2024-11-27 19:58:22,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 32 states have (on average 1.09375) internal successors, (35), 33 states have internal predecessors, (35), 8 states have call successors, (8), 7 states have call predecessors, (8), 8 states have return successors, (14), 8 states have call predecessors, (14), 6 states have call successors, (14) [2024-11-27 19:58:22,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 57 transitions. [2024-11-27 19:58:22,840 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 57 transitions. Word has length 45 [2024-11-27 19:58:22,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:58:22,840 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 57 transitions. [2024-11-27 19:58:22,841 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 32 states have internal predecessors, (44), 9 states have call successors, (9), 6 states have call predecessors, (9), 14 states have return successors, (14), 14 states have call predecessors, (14), 7 states have call successors, (14) [2024-11-27 19:58:22,841 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 57 transitions. [2024-11-27 19:58:22,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-27 19:58:22,842 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:58:22,844 INFO L218 NwaCegarLoop]: trace histogram [8, 8, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:58:22,859 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 19:58:23,048 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:58:23,048 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_44_to_45_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:58:23,049 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:58:23,049 INFO L85 PathProgramCache]: Analyzing trace with hash -1051475311, now seen corresponding path program 6 times [2024-11-27 19:58:23,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:58:23,049 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398392992] [2024-11-27 19:58:23,049 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 19:58:23,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:58:23,226 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-27 19:58:23,227 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:58:25,586 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 20 proven. 65 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-27 19:58:25,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:58:25,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398392992] [2024-11-27 19:58:25,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398392992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:58:25,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659789061] [2024-11-27 19:58:25,588 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 19:58:25,588 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:58:25,588 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:58:25,590 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:58:25,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_55f0852d-3365-4d4a-a1b4-7b6c97dfe2ff/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 19:58:27,717 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2024-11-27 19:58:27,717 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:58:27,725 INFO L256 TraceCheckSpWp]: Trace formula consists of 462 conjuncts, 131 conjuncts are in the unsatisfiable core [2024-11-27 19:58:27,730 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:58:28,630 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2024-11-27 19:58:28,630 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:59:59,705 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 19:59:59,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659789061] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:59:59,706 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:59:59,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 17, 34] total 63 [2024-11-27 19:59:59,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697665061] [2024-11-27 19:59:59,706 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:59:59,707 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2024-11-27 19:59:59,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:59:59,709 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2024-11-27 19:59:59,710 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=351, Invalid=3534, Unknown=21, NotChecked=0, Total=3906 [2024-11-27 19:59:59,710 INFO L87 Difference]: Start difference. First operand 49 states and 57 transitions. Second operand has 63 states, 48 states have (on average 1.3125) internal successors, (63), 54 states have internal predecessors, (63), 16 states have call successors, (16), 10 states have call predecessors, (16), 24 states have return successors, (24), 22 states have call predecessors, (24), 15 states have call successors, (24) [2024-11-27 20:00:04,257 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 [] [2024-11-27 20:00:08,264 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:00:12,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:00:16,279 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:00:20,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:00:24,288 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:00:28,292 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:00:32,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:00:36,303 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:00:40,310 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:00:44,315 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:00:48,321 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:01:40,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:01:44,452 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:01:48,457 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:01:52,461 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:01:56,464 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:02:00,468 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:02:04,472 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:02:08,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:02:12,481 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:02:16,485 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:02:20,489 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:02:24,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:02:28,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:02:32,530 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:02:36,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:02:40,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:02:44,568 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:02:48,572 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:02:52,581 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:02:56,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:03:00,591 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:03:04,595 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:03:08,600 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:03:12,605 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:03:16,610 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:03:20,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:03:24,623 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:04:28,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:04:32,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:04:36,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:04:40,840 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:04:44,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:04:48,849 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:04:52,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:04:56,857 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:05:00,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:05:04,865 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:05:08,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:05:12,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:05:16,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:05:20,932 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:05:24,936 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:05:28,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-11-27 20:05:32,972 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 []