./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/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_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/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_7f8197c7-7a60-41e6-bf27-3f3db495a926/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 dea78793c7130d873f751539350d9a84f129d659be765f9ed3f85c683976c43a --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:09:03,998 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:09:04,094 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:09:04,103 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:09:04,103 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:09:04,141 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:09:04,142 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:09:04,142 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:09:04,142 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:09:04,142 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:09:04,142 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:09:04,142 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:09:04,143 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:09:04,143 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:09:04,143 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:09:04,143 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:09:04,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:09:04,143 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:09:04,143 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:09:04,143 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:09:04,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:09:04,144 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:09:04,144 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:09:04,144 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:09:04,144 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:09:04,144 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:09:04,144 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:09:04,146 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:09:04,146 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:09:04,146 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:09:04,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:09:04,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:09:04,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:09:04,147 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:09:04,147 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:09:04,147 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:09:04,147 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:09:04,147 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:09:04,147 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:09:04,148 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:09:04,148 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:09:04,148 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:09:04,148 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:09:04,148 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:09:04,148 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:09:04,148 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:09:04,148 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:09:04,148 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:09:04,149 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_7f8197c7-7a60-41e6-bf27-3f3db495a926/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 -> dea78793c7130d873f751539350d9a84f129d659be765f9ed3f85c683976c43a [2024-11-28 02:09:04,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:09:04,461 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:09:04,465 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:09:04,466 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:09:04,466 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:09:04,468 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c [2024-11-28 02:09:07,416 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/data/abd923c72/4fcdadf2697546f38d3184f1b9bd97f7/FLAGaf5dfb82d [2024-11-28 02:09:07,693 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:09:07,696 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c [2024-11-28 02:09:07,706 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/data/abd923c72/4fcdadf2697546f38d3184f1b9bd97f7/FLAGaf5dfb82d [2024-11-28 02:09:07,728 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/data/abd923c72/4fcdadf2697546f38d3184f1b9bd97f7 [2024-11-28 02:09:07,730 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:09:07,733 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:09:07,736 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:09:07,736 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:09:07,740 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:09:07,741 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:09:07" (1/1) ... [2024-11-28 02:09:07,742 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ad7792 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:07, skipping insertion in model container [2024-11-28 02:09:07,742 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:09:07" (1/1) ... [2024-11-28 02:09:07,765 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:09:07,947 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c[1440,1453] [2024-11-28 02:09:07,982 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:09:07,995 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:09:08,010 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_7f8197c7-7a60-41e6-bf27-3f3db495a926/sv-benchmarks/c/recursified_loop-simple/recursified_deep-nested.c[1440,1453] [2024-11-28 02:09:08,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:09:08,056 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:09:08,058 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:08 WrapperNode [2024-11-28 02:09:08,058 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:09:08,060 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:09:08,060 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:09:08,061 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:09:08,070 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:08" (1/1) ... [2024-11-28 02:09:08,083 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:08" (1/1) ... [2024-11-28 02:09:08,103 INFO L138 Inliner]: procedures = 16, calls = 71, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 44 [2024-11-28 02:09:08,103 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:09:08,104 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:09:08,104 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:09:08,104 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:09:08,115 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:08" (1/1) ... [2024-11-28 02:09:08,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:08" (1/1) ... [2024-11-28 02:09:08,119 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:08" (1/1) ... [2024-11-28 02:09:08,150 INFO L175 MemorySlicer]: Split 38 memory accesses to 7 slices as follows [2, 7, 5, 6, 6, 6, 6]. 18 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0, 0, 0]. The 11 writes are split as follows [0, 1, 2, 2, 2, 2, 2]. [2024-11-28 02:09:08,153 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:08" (1/1) ... [2024-11-28 02:09:08,154 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:08" (1/1) ... [2024-11-28 02:09:08,171 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:08" (1/1) ... [2024-11-28 02:09:08,173 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:08" (1/1) ... [2024-11-28 02:09:08,176 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:08" (1/1) ... [2024-11-28 02:09:08,179 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:08" (1/1) ... [2024-11-28 02:09:08,184 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:08" (1/1) ... [2024-11-28 02:09:08,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:09:08,195 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:09:08,195 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:09:08,196 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:09:08,197 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:08" (1/1) ... [2024-11-28 02:09:08,209 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:09:08,223 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:08,237 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:09:08,242 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:09:08,275 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_12_to_13_0 [2024-11-28 02:09:08,275 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_12_to_13_0 [2024-11-28 02:09:08,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:09:08,276 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_13_to_14_0 [2024-11-28 02:09:08,276 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_13_to_14_0 [2024-11-28 02:09:08,276 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_11_to_12_0 [2024-11-28 02:09:08,276 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_11_to_12_0 [2024-11-28 02:09:08,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:09:08,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 02:09:08,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 02:09:08,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-28 02:09:08,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-11-28 02:09:08,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-11-28 02:09:08,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-11-28 02:09:08,276 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_14_to_16_0 [2024-11-28 02:09:08,276 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_14_to_16_0 [2024-11-28 02:09:08,276 INFO L130 BoogieDeclarations]: Found specification of procedure func_to_recursive_line_10_to_11_0 [2024-11-28 02:09:08,276 INFO L138 BoogieDeclarations]: Found implementation of procedure func_to_recursive_line_10_to_11_0 [2024-11-28 02:09:08,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 02:09:08,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 02:09:08,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 02:09:08,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 02:09:08,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-28 02:09:08,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-11-28 02:09:08,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#5 [2024-11-28 02:09:08,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#6 [2024-11-28 02:09:08,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:09:08,277 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:09:08,277 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 02:09:08,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 02:09:08,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 02:09:08,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-28 02:09:08,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-11-28 02:09:08,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#5 [2024-11-28 02:09:08,280 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#6 [2024-11-28 02:09:08,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 02:09:08,462 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:09:08,464 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:09:08,918 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-28 02:09:08,918 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:09:08,933 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:09:08,933 INFO L312 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-28 02:09:08,934 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:09:08 BoogieIcfgContainer [2024-11-28 02:09:08,934 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:09:08,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:09:08,939 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:09:08,944 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:09:08,944 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:09:07" (1/3) ... [2024-11-28 02:09:08,945 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac8aaa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:09:08, skipping insertion in model container [2024-11-28 02:09:08,945 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:09:08" (2/3) ... [2024-11-28 02:09:08,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6ac8aaa1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:09:08, skipping insertion in model container [2024-11-28 02:09:08,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:09:08" (3/3) ... [2024-11-28 02:09:08,949 INFO L128 eAbstractionObserver]: Analyzing ICFG recursified_deep-nested.c [2024-11-28 02:09:08,964 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:09:08,965 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG recursified_deep-nested.c that has 6 procedures, 51 locations, 1 initial locations, 0 loop locations, and 1 error locations. [2024-11-28 02:09:09,022 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:09:09,035 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;@4b24ea3f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:09:09,035 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:09:09,039 INFO L276 IsEmpty]: Start isEmpty. Operand has 51 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 40 states have internal predecessors, (45), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 02:09:09,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 02:09:09,048 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:09,049 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:09,049 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:09,054 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:09,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1592718110, now seen corresponding path program 1 times [2024-11-28 02:09:09,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:09,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886070368] [2024-11-28 02:09:09,065 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:09,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:09,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:09,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:09,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:09,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886070368] [2024-11-28 02:09:09,679 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886070368] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:09,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:09,683 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 02:09:09,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51367972] [2024-11-28 02:09:09,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:09,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 02:09:09,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:09,713 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 02:09:09,713 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:09:09,716 INFO L87 Difference]: Start difference. First operand has 51 states, 34 states have (on average 1.3235294117647058) internal successors, (45), 40 states have internal predecessors, (45), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:09,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:09,781 INFO L93 Difference]: Finished difference Result 102 states and 140 transitions. [2024-11-28 02:09:09,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 02:09:09,783 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-28 02:09:09,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:09,790 INFO L225 Difference]: With dead ends: 102 [2024-11-28 02:09:09,790 INFO L226 Difference]: Without dead ends: 48 [2024-11-28 02:09:09,794 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 02:09:09,798 INFO L435 NwaCegarLoop]: 61 mSDtfsCounter, 1 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 175 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:09,799 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 175 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:09,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2024-11-28 02:09:09,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2024-11-28 02:09:09,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.28125) internal successors, (41), 37 states have internal predecessors, (41), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 02:09:09,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 59 transitions. [2024-11-28 02:09:09,845 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 59 transitions. Word has length 26 [2024-11-28 02:09:09,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:09,846 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 59 transitions. [2024-11-28 02:09:09,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:09,849 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 59 transitions. [2024-11-28 02:09:09,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 02:09:09,852 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:09,853 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:09,853 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:09:09,853 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:09,854 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:09,854 INFO L85 PathProgramCache]: Analyzing trace with hash -1590871068, now seen corresponding path program 1 times [2024-11-28 02:09:09,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:09,854 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113874392] [2024-11-28 02:09:09,855 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:09,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:09,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:10,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:10,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:10,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113874392] [2024-11-28 02:09:10,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113874392] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:10,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:10,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:09:10,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528469072] [2024-11-28 02:09:10,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:10,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:09:10,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:10,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:09:10,241 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:09:10,241 INFO L87 Difference]: Start difference. First operand 47 states and 59 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:10,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:10,289 INFO L93 Difference]: Finished difference Result 94 states and 128 transitions. [2024-11-28 02:09:10,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:09:10,290 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-28 02:09:10,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:10,291 INFO L225 Difference]: With dead ends: 94 [2024-11-28 02:09:10,291 INFO L226 Difference]: Without dead ends: 50 [2024-11-28 02:09:10,291 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:09:10,292 INFO L435 NwaCegarLoop]: 52 mSDtfsCounter, 1 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:10,292 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 200 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:09:10,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2024-11-28 02:09:10,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2024-11-28 02:09:10,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 40 states have internal predecessors, (44), 10 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-28 02:09:10,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 62 transitions. [2024-11-28 02:09:10,300 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 62 transitions. Word has length 26 [2024-11-28 02:09:10,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:10,300 INFO L471 AbstractCegarLoop]: Abstraction has 50 states and 62 transitions. [2024-11-28 02:09:10,300 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 1 states have call successors, (5), 1 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:10,300 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 62 transitions. [2024-11-28 02:09:10,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 02:09:10,301 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:10,301 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:10,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 02:09:10,301 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:10,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:10,302 INFO L85 PathProgramCache]: Analyzing trace with hash 927241824, now seen corresponding path program 1 times [2024-11-28 02:09:10,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:10,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122353886] [2024-11-28 02:09:10,302 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:10,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:11,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:11,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:11,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122353886] [2024-11-28 02:09:11,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122353886] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:11,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:09:11,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2024-11-28 02:09:11,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956736732] [2024-11-28 02:09:11,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:11,852 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-28 02:09:11,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:11,852 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-28 02:09:11,853 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2024-11-28 02:09:11,853 INFO L87 Difference]: Start difference. First operand 50 states and 62 transitions. Second operand has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:12,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:12,422 INFO L93 Difference]: Finished difference Result 72 states and 90 transitions. [2024-11-28 02:09:12,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-11-28 02:09:12,423 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-28 02:09:12,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:12,427 INFO L225 Difference]: With dead ends: 72 [2024-11-28 02:09:12,427 INFO L226 Difference]: Without dead ends: 70 [2024-11-28 02:09:12,428 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=402, Unknown=0, NotChecked=0, Total=462 [2024-11-28 02:09:12,430 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 55 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 298 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:12,431 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 388 Invalid, 324 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 298 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-28 02:09:12,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2024-11-28 02:09:12,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 61. [2024-11-28 02:09:12,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 45 states have (on average 1.3111111111111111) internal successors, (59), 50 states have internal predecessors, (59), 10 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (9), 8 states have call predecessors, (9), 8 states have call successors, (9) [2024-11-28 02:09:12,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2024-11-28 02:09:12,456 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 26 [2024-11-28 02:09:12,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:12,457 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2024-11-28 02:09:12,457 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 10 states have internal predecessors, (21), 5 states have call successors, (5), 5 states have call predecessors, (5), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:12,457 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2024-11-28 02:09:12,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-28 02:09:12,458 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:12,458 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:12,458 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 02:09:12,459 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:12,459 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:12,459 INFO L85 PathProgramCache]: Analyzing trace with hash 2114196936, now seen corresponding path program 1 times [2024-11-28 02:09:12,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:12,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179083295] [2024-11-28 02:09:12,460 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:12,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:12,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:14,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:14,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179083295] [2024-11-28 02:09:14,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179083295] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:14,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857358380] [2024-11-28 02:09:14,109 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:14,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:14,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:14,115 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:14,117 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:09:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:14,381 INFO L256 TraceCheckSpWp]: Trace formula consists of 513 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-28 02:09:14,394 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:14,438 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:09:14,753 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:09:15,021 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 19 treesize of output 11 [2024-11-28 02:09:15,217 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:15,217 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:16,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:16,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857358380] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:16,497 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:16,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 19] total 45 [2024-11-28 02:09:16,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205313622] [2024-11-28 02:09:16,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:16,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2024-11-28 02:09:16,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:16,499 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2024-11-28 02:09:16,500 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1860, Unknown=0, NotChecked=0, Total=1980 [2024-11-28 02:09:16,500 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand has 45 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 30 states have internal predecessors, (91), 16 states have call successors, (18), 16 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:19,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:19,987 INFO L93 Difference]: Finished difference Result 236 states and 315 transitions. [2024-11-28 02:09:19,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-28 02:09:19,990 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 30 states have internal predecessors, (91), 16 states have call successors, (18), 16 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2024-11-28 02:09:19,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:19,992 INFO L225 Difference]: With dead ends: 236 [2024-11-28 02:09:19,992 INFO L226 Difference]: Without dead ends: 178 [2024-11-28 02:09:19,997 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1057 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=607, Invalid=5873, Unknown=0, NotChecked=0, Total=6480 [2024-11-28 02:09:19,999 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 491 mSDsluCounter, 925 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 491 SdHoareTripleChecker+Valid, 966 SdHoareTripleChecker+Invalid, 1445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:20,000 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [491 Valid, 966 Invalid, 1445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 02:09:20,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2024-11-28 02:09:20,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 151. [2024-11-28 02:09:20,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 122 states have (on average 1.319672131147541) internal successors, (161), 132 states have internal predecessors, (161), 15 states have call successors, (15), 12 states have call predecessors, (15), 13 states have return successors, (23), 12 states have call predecessors, (23), 13 states have call successors, (23) [2024-11-28 02:09:20,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 199 transitions. [2024-11-28 02:09:20,035 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 199 transitions. Word has length 38 [2024-11-28 02:09:20,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:20,035 INFO L471 AbstractCegarLoop]: Abstraction has 151 states and 199 transitions. [2024-11-28 02:09:20,035 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 39 states have (on average 2.3333333333333335) internal successors, (91), 30 states have internal predecessors, (91), 16 states have call successors, (18), 16 states have call predecessors, (18), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:20,035 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 199 transitions. [2024-11-28 02:09:20,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 02:09:20,037 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:20,038 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:20,052 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 02:09:20,238 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:20,238 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:20,239 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:20,239 INFO L85 PathProgramCache]: Analyzing trace with hash 950234112, now seen corresponding path program 2 times [2024-11-28 02:09:20,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:20,239 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837801269] [2024-11-28 02:09:20,239 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:09:20,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:20,364 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:09:20,365 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:23,512 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:23,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:23,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837801269] [2024-11-28 02:09:23,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837801269] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:23,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [20799854] [2024-11-28 02:09:23,513 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:09:23,513 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:23,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:23,518 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:23,520 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:09:23,825 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:09:23,825 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:23,831 INFO L256 TraceCheckSpWp]: Trace formula consists of 744 conjuncts, 77 conjuncts are in the unsatisfiable core [2024-11-28 02:09:23,840 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:23,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:09:23,969 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:09:24,461 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-11-28 02:09:24,461 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:09:24,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [20799854] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:09:24,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:09:24,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [27] total 39 [2024-11-28 02:09:24,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794278951] [2024-11-28 02:09:24,462 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:09:24,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 02:09:24,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:24,463 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 02:09:24,464 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=1401, Unknown=0, NotChecked=0, Total=1482 [2024-11-28 02:09:24,464 INFO L87 Difference]: Start difference. First operand 151 states and 199 transitions. Second operand has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:25,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:25,015 INFO L93 Difference]: Finished difference Result 457 states and 623 transitions. [2024-11-28 02:09:25,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-28 02:09:25,016 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-28 02:09:25,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:25,020 INFO L225 Difference]: With dead ends: 457 [2024-11-28 02:09:25,022 INFO L226 Difference]: Without dead ends: 309 [2024-11-28 02:09:25,024 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=115, Invalid=1955, Unknown=0, NotChecked=0, Total=2070 [2024-11-28 02:09:25,027 INFO L435 NwaCegarLoop]: 41 mSDtfsCounter, 61 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 295 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 445 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:25,028 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 445 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 295 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 02:09:25,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2024-11-28 02:09:25,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 302. [2024-11-28 02:09:25,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 250 states have (on average 1.312) internal successors, (328), 269 states have internal predecessors, (328), 25 states have call successors, (25), 23 states have call predecessors, (25), 26 states have return successors, (45), 19 states have call predecessors, (45), 23 states have call successors, (45) [2024-11-28 02:09:25,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 398 transitions. [2024-11-28 02:09:25,071 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 398 transitions. Word has length 74 [2024-11-28 02:09:25,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:25,071 INFO L471 AbstractCegarLoop]: Abstraction has 302 states and 398 transitions. [2024-11-28 02:09:25,071 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.5833333333333335) internal successors, (31), 10 states have internal predecessors, (31), 6 states have call successors, (6), 6 states have call predecessors, (6), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:25,072 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 398 transitions. [2024-11-28 02:09:25,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 02:09:25,075 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:25,075 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:25,086 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-28 02:09:25,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:25,279 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:25,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:25,279 INFO L85 PathProgramCache]: Analyzing trace with hash -2126962582, now seen corresponding path program 1 times [2024-11-28 02:09:25,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:25,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262415487] [2024-11-28 02:09:25,279 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:25,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:25,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:27,284 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 68 proven. 30 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 02:09:27,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:27,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262415487] [2024-11-28 02:09:27,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262415487] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:27,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1757581213] [2024-11-28 02:09:27,285 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:27,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:27,285 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:27,290 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:27,293 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 02:09:27,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:27,662 INFO L256 TraceCheckSpWp]: Trace formula consists of 799 conjuncts, 177 conjuncts are in the unsatisfiable core [2024-11-28 02:09:27,673 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:27,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:09:27,803 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:09:27,913 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 [2024-11-28 02:09:28,127 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 19 treesize of output 11 [2024-11-28 02:09:28,319 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 19 treesize of output 11 [2024-11-28 02:09:28,575 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 68 proven. 30 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-28 02:09:28,575 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:28,738 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 33 treesize of output 25 [2024-11-28 02:09:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 67 proven. 42 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 02:09:30,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1757581213] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:30,221 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:30,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 20] total 52 [2024-11-28 02:09:30,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539242256] [2024-11-28 02:09:30,221 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:30,222 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-28 02:09:30,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:30,223 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-28 02:09:30,224 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=202, Invalid=2450, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 02:09:30,224 INFO L87 Difference]: Start difference. First operand 302 states and 398 transitions. Second operand has 52 states, 45 states have (on average 3.0) internal successors, (135), 37 states have internal predecessors, (135), 17 states have call successors, (19), 17 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:43,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:43,871 INFO L93 Difference]: Finished difference Result 1300 states and 1764 transitions. [2024-11-28 02:09:43,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 175 states. [2024-11-28 02:09:43,875 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 45 states have (on average 3.0) internal successors, (135), 37 states have internal predecessors, (135), 17 states have call successors, (19), 17 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-28 02:09:43,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:43,885 INFO L225 Difference]: With dead ends: 1300 [2024-11-28 02:09:43,885 INFO L226 Difference]: Without dead ends: 1001 [2024-11-28 02:09:43,893 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 193 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12468 ImplicationChecksByTransitivity, 12.1s TimeCoverageRelationStatistics Valid=3414, Invalid=34416, Unknown=0, NotChecked=0, Total=37830 [2024-11-28 02:09:43,893 INFO L435 NwaCegarLoop]: 56 mSDtfsCounter, 410 mSDsluCounter, 1281 mSDsCounter, 0 mSdLazyCounter, 3333 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 3455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:43,894 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [411 Valid, 1337 Invalid, 3455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3333 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2024-11-28 02:09:43,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2024-11-28 02:09:43,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 673. [2024-11-28 02:09:43,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 560 states have (on average 1.3) internal successors, (728), 600 states have internal predecessors, (728), 49 states have call successors, (49), 45 states have call predecessors, (49), 63 states have return successors, (110), 43 states have call predecessors, (110), 47 states have call successors, (110) [2024-11-28 02:09:43,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 887 transitions. [2024-11-28 02:09:43,990 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 887 transitions. Word has length 74 [2024-11-28 02:09:43,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:43,990 INFO L471 AbstractCegarLoop]: Abstraction has 673 states and 887 transitions. [2024-11-28 02:09:43,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 45 states have (on average 3.0) internal successors, (135), 37 states have internal predecessors, (135), 17 states have call successors, (19), 17 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:43,990 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 887 transitions. [2024-11-28 02:09:43,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-11-28 02:09:43,998 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:43,998 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:44,012 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-28 02:09:44,199 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:44,199 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:44,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:44,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1483598226, now seen corresponding path program 2 times [2024-11-28 02:09:44,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:44,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202494318] [2024-11-28 02:09:44,200 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:09:44,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:44,269 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:09:44,270 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:46,878 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 112 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:09:46,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:46,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202494318] [2024-11-28 02:09:46,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202494318] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:46,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204332328] [2024-11-28 02:09:46,879 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:09:46,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:46,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:46,883 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:46,884 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 02:09:47,185 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:09:47,185 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:09:47,192 INFO L256 TraceCheckSpWp]: Trace formula consists of 789 conjuncts, 179 conjuncts are in the unsatisfiable core [2024-11-28 02:09:47,206 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:47,214 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:09:47,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:09:47,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:09:47,444 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:09:48,098 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2024-11-28 02:09:48,098 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:09:48,331 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 35 treesize of output 27 [2024-11-28 02:09:49,189 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 31 proven. 36 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2024-11-28 02:09:49,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1204332328] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:09:49,189 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:09:49,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 22, 15] total 52 [2024-11-28 02:09:49,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129741895] [2024-11-28 02:09:49,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:09:49,190 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-28 02:09:49,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:09:49,191 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-28 02:09:49,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=2473, Unknown=0, NotChecked=0, Total=2652 [2024-11-28 02:09:49,192 INFO L87 Difference]: Start difference. First operand 673 states and 887 transitions. Second operand has 52 states, 45 states have (on average 2.9555555555555557) internal successors, (133), 36 states have internal predecessors, (133), 17 states have call successors, (19), 17 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:56,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:09:56,393 INFO L93 Difference]: Finished difference Result 1730 states and 2291 transitions. [2024-11-28 02:09:56,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2024-11-28 02:09:56,395 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 45 states have (on average 2.9555555555555557) internal successors, (133), 36 states have internal predecessors, (133), 17 states have call successors, (19), 17 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2024-11-28 02:09:56,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:09:56,406 INFO L225 Difference]: With dead ends: 1730 [2024-11-28 02:09:56,408 INFO L226 Difference]: Without dead ends: 1060 [2024-11-28 02:09:56,418 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 133 SyntacticMatches, 0 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7261 ImplicationChecksByTransitivity, 6.2s TimeCoverageRelationStatistics Valid=2006, Invalid=22174, Unknown=0, NotChecked=0, Total=24180 [2024-11-28 02:09:56,419 INFO L435 NwaCegarLoop]: 67 mSDtfsCounter, 1026 mSDsluCounter, 1970 mSDsCounter, 0 mSdLazyCounter, 3166 mSolverCounterSat, 289 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1026 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 3455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 289 IncrementalHoareTripleChecker+Valid, 3166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-28 02:09:56,420 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [1026 Valid, 2037 Invalid, 3455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [289 Valid, 3166 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-28 02:09:56,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1060 states. [2024-11-28 02:09:56,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1060 to 921. [2024-11-28 02:09:56,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 775 states have (on average 1.2851612903225806) internal successors, (996), 829 states have internal predecessors, (996), 63 states have call successors, (63), 60 states have call predecessors, (63), 82 states have return successors, (129), 55 states have call predecessors, (129), 61 states have call successors, (129) [2024-11-28 02:09:56,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1188 transitions. [2024-11-28 02:09:56,515 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1188 transitions. Word has length 74 [2024-11-28 02:09:56,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:09:56,516 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1188 transitions. [2024-11-28 02:09:56,516 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 45 states have (on average 2.9555555555555557) internal successors, (133), 36 states have internal predecessors, (133), 17 states have call successors, (19), 17 states have call predecessors, (19), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:09:56,516 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1188 transitions. [2024-11-28 02:09:56,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-11-28 02:09:56,520 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:09:56,520 INFO L218 NwaCegarLoop]: trace histogram [8, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:09:56,531 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-28 02:09:56,724 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-28 02:09:56,725 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:09:56,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:09:56,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1804881974, now seen corresponding path program 1 times [2024-11-28 02:09:56,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:09:56,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340093244] [2024-11-28 02:09:56,725 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:56,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:09:56,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:58,119 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 30 proven. 4 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2024-11-28 02:09:58,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:09:58,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340093244] [2024-11-28 02:09:58,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340093244] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:09:58,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [139478268] [2024-11-28 02:09:58,120 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:09:58,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:09:58,120 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:09:58,124 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:09:58,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 02:09:58,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:09:58,592 INFO L256 TraceCheckSpWp]: Trace formula consists of 1140 conjuncts, 218 conjuncts are in the unsatisfiable core [2024-11-28 02:09:58,604 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:09:58,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:09:58,639 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:09:58,848 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 19 treesize of output 11 [2024-11-28 02:09:59,044 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 19 treesize of output 11 [2024-11-28 02:09:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 9 proven. 57 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2024-11-28 02:09:59,790 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:10:00,014 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 35 treesize of output 27 [2024-11-28 02:10:00,367 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 106 proven. 12 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2024-11-28 02:10:00,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [139478268] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:10:00,367 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 02:10:00,367 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 26, 11] total 40 [2024-11-28 02:10:00,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55205228] [2024-11-28 02:10:00,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 02:10:00,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2024-11-28 02:10:00,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:00,372 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2024-11-28 02:10:00,373 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=1432, Unknown=0, NotChecked=0, Total=1560 [2024-11-28 02:10:00,374 INFO L87 Difference]: Start difference. First operand 921 states and 1188 transitions. Second operand has 40 states, 37 states have (on average 2.972972972972973) internal successors, (110), 30 states have internal predecessors, (110), 13 states have call successors, (24), 14 states have call predecessors, (24), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 02:10:07,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:07,059 INFO L93 Difference]: Finished difference Result 2539 states and 3366 transitions. [2024-11-28 02:10:07,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2024-11-28 02:10:07,060 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 37 states have (on average 2.972972972972973) internal successors, (110), 30 states have internal predecessors, (110), 13 states have call successors, (24), 14 states have call predecessors, (24), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) Word has length 104 [2024-11-28 02:10:07,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:07,070 INFO L225 Difference]: With dead ends: 2539 [2024-11-28 02:10:07,071 INFO L226 Difference]: Without dead ends: 1605 [2024-11-28 02:10:07,075 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 216 SyntacticMatches, 2 SemanticMatches, 133 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5761 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1375, Invalid=16715, Unknown=0, NotChecked=0, Total=18090 [2024-11-28 02:10:07,076 INFO L435 NwaCegarLoop]: 85 mSDtfsCounter, 353 mSDsluCounter, 1415 mSDsCounter, 0 mSdLazyCounter, 3085 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1500 SdHoareTripleChecker+Invalid, 3278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 3085 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:07,076 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1500 Invalid, 3278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 3085 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2024-11-28 02:10:07,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1605 states. [2024-11-28 02:10:07,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1605 to 1411. [2024-11-28 02:10:07,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1411 states, 1176 states have (on average 1.272108843537415) internal successors, (1496), 1252 states have internal predecessors, (1496), 97 states have call successors, (97), 86 states have call predecessors, (97), 137 states have return successors, (226), 79 states have call predecessors, (226), 95 states have call successors, (226) [2024-11-28 02:10:07,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1411 states to 1411 states and 1819 transitions. [2024-11-28 02:10:07,252 INFO L78 Accepts]: Start accepts. Automaton has 1411 states and 1819 transitions. Word has length 104 [2024-11-28 02:10:07,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:07,252 INFO L471 AbstractCegarLoop]: Abstraction has 1411 states and 1819 transitions. [2024-11-28 02:10:07,252 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 37 states have (on average 2.972972972972973) internal successors, (110), 30 states have internal predecessors, (110), 13 states have call successors, (24), 14 states have call predecessors, (24), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-28 02:10:07,252 INFO L276 IsEmpty]: Start isEmpty. Operand 1411 states and 1819 transitions. [2024-11-28 02:10:07,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-28 02:10:07,261 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:07,262 INFO L218 NwaCegarLoop]: trace histogram [12, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 6, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:10:07,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-28 02:10:07,465 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-28 02:10:07,466 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:07,466 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:07,466 INFO L85 PathProgramCache]: Analyzing trace with hash -764896793, now seen corresponding path program 1 times [2024-11-28 02:10:07,466 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:07,466 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913953300] [2024-11-28 02:10:07,466 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:07,466 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:07,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:10,111 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 255 proven. 55 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2024-11-28 02:10:10,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:10,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913953300] [2024-11-28 02:10:10,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913953300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:10,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21836776] [2024-11-28 02:10:10,112 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:10:10,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:10,112 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:10:10,114 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:10:10,119 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 02:10:10,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:10:10,615 INFO L256 TraceCheckSpWp]: Trace formula consists of 1519 conjuncts, 239 conjuncts are in the unsatisfiable core [2024-11-28 02:10:10,629 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:10:10,634 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 [2024-11-28 02:10:10,714 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:10:10,981 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 19 treesize of output 11 [2024-11-28 02:10:11,256 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 19 treesize of output 11 [2024-11-28 02:10:11,351 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:10:12,059 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-28 02:10:12,240 INFO L134 CoverageAnalysis]: Checked inductivity of 530 backedges. 261 proven. 91 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2024-11-28 02:10:12,240 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:10:13,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21836776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:13,924 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:10:13,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 22] total 39 [2024-11-28 02:10:13,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165385697] [2024-11-28 02:10:13,924 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:10:13,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2024-11-28 02:10:13,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:13,926 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2024-11-28 02:10:13,926 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2920, Unknown=0, NotChecked=0, Total=3080 [2024-11-28 02:10:13,926 INFO L87 Difference]: Start difference. First operand 1411 states and 1819 transitions. Second operand has 39 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 29 states have internal predecessors, (111), 17 states have call successors, (23), 15 states have call predecessors, (23), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 02:10:19,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:19,637 INFO L93 Difference]: Finished difference Result 3408 states and 4480 transitions. [2024-11-28 02:10:19,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2024-11-28 02:10:19,638 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 29 states have internal predecessors, (111), 17 states have call successors, (23), 15 states have call predecessors, (23), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) Word has length 155 [2024-11-28 02:10:19,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:19,652 INFO L225 Difference]: With dead ends: 3408 [2024-11-28 02:10:19,652 INFO L226 Difference]: Without dead ends: 1942 [2024-11-28 02:10:19,657 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 209 SyntacticMatches, 2 SemanticMatches, 115 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2717 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=701, Invalid=12871, Unknown=0, NotChecked=0, Total=13572 [2024-11-28 02:10:19,659 INFO L435 NwaCegarLoop]: 62 mSDtfsCounter, 204 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 1174 SdHoareTripleChecker+Invalid, 2011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:19,659 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [204 Valid, 1174 Invalid, 2011 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 1906 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2024-11-28 02:10:19,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1942 states. [2024-11-28 02:10:19,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1942 to 1852. [2024-11-28 02:10:19,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1852 states, 1547 states have (on average 1.2669683257918551) internal successors, (1960), 1640 states have internal predecessors, (1960), 132 states have call successors, (132), 112 states have call predecessors, (132), 172 states have return successors, (343), 110 states have call predecessors, (343), 130 states have call successors, (343) [2024-11-28 02:10:19,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1852 states to 1852 states and 2435 transitions. [2024-11-28 02:10:19,912 INFO L78 Accepts]: Start accepts. Automaton has 1852 states and 2435 transitions. Word has length 155 [2024-11-28 02:10:19,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:19,912 INFO L471 AbstractCegarLoop]: Abstraction has 1852 states and 2435 transitions. [2024-11-28 02:10:19,912 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 33 states have (on average 3.3636363636363638) internal successors, (111), 29 states have internal predecessors, (111), 17 states have call successors, (23), 15 states have call predecessors, (23), 7 states have return successors, (10), 8 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-28 02:10:19,912 INFO L276 IsEmpty]: Start isEmpty. Operand 1852 states and 2435 transitions. [2024-11-28 02:10:19,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2024-11-28 02:10:19,920 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:19,920 INFO L218 NwaCegarLoop]: trace histogram [15, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 9, 7, 6, 5, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:10:19,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 02:10:20,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-28 02:10:20,125 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:20,125 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:20,125 INFO L85 PathProgramCache]: Analyzing trace with hash -195863966, now seen corresponding path program 2 times [2024-11-28 02:10:20,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:20,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123489248] [2024-11-28 02:10:20,125 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:10:20,126 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:20,264 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:10:20,264 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:10:25,922 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 459 proven. 170 refuted. 0 times theorem prover too weak. 315 trivial. 0 not checked. [2024-11-28 02:10:25,923 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:25,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123489248] [2024-11-28 02:10:25,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123489248] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:25,923 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [364540788] [2024-11-28 02:10:25,923 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 02:10:25,923 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:25,924 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:10:25,925 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:10:25,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 02:10:26,426 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 02:10:26,426 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:10:26,437 INFO L256 TraceCheckSpWp]: Trace formula consists of 1791 conjuncts, 316 conjuncts are in the unsatisfiable core [2024-11-28 02:10:26,445 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:10:26,450 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:10:26,795 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:10:26,972 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:10:28,190 INFO L134 CoverageAnalysis]: Checked inductivity of 944 backedges. 313 proven. 8 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2024-11-28 02:10:28,190 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:10:30,239 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 21 treesize of output 17 [2024-11-28 02:10:30,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [364540788] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:30,651 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:10:30,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 20] total 48 [2024-11-28 02:10:30,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778341848] [2024-11-28 02:10:30,651 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:10:30,652 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-28 02:10:30,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:30,653 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-28 02:10:30,654 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=3724, Unknown=0, NotChecked=0, Total=3906 [2024-11-28 02:10:30,654 INFO L87 Difference]: Start difference. First operand 1852 states and 2435 transitions. Second operand has 48 states, 42 states have (on average 3.238095238095238) internal successors, (136), 33 states have internal predecessors, (136), 19 states have call successors, (22), 17 states have call predecessors, (22), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 02:10:36,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:36,995 INFO L93 Difference]: Finished difference Result 4197 states and 5590 transitions. [2024-11-28 02:10:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2024-11-28 02:10:36,996 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 42 states have (on average 3.238095238095238) internal successors, (136), 33 states have internal predecessors, (136), 19 states have call successors, (22), 17 states have call predecessors, (22), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) Word has length 197 [2024-11-28 02:10:36,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:37,009 INFO L225 Difference]: With dead ends: 4197 [2024-11-28 02:10:37,009 INFO L226 Difference]: Without dead ends: 2336 [2024-11-28 02:10:37,016 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 346 SyntacticMatches, 0 SemanticMatches, 124 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3593 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=725, Invalid=15025, Unknown=0, NotChecked=0, Total=15750 [2024-11-28 02:10:37,017 INFO L435 NwaCegarLoop]: 97 mSDtfsCounter, 329 mSDsluCounter, 2572 mSDsCounter, 0 mSdLazyCounter, 3385 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 329 SdHoareTripleChecker+Valid, 2669 SdHoareTripleChecker+Invalid, 3455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 3385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:37,017 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [329 Valid, 2669 Invalid, 3455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 3385 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-11-28 02:10:37,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2336 states. [2024-11-28 02:10:37,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2336 to 2114. [2024-11-28 02:10:37,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2114 states, 1775 states have (on average 1.2625352112676056) internal successors, (2241), 1875 states have internal predecessors, (2241), 153 states have call successors, (153), 125 states have call predecessors, (153), 185 states have return successors, (392), 121 states have call predecessors, (392), 151 states have call successors, (392) [2024-11-28 02:10:37,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2114 states to 2114 states and 2786 transitions. [2024-11-28 02:10:37,299 INFO L78 Accepts]: Start accepts. Automaton has 2114 states and 2786 transitions. Word has length 197 [2024-11-28 02:10:37,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:37,301 INFO L471 AbstractCegarLoop]: Abstraction has 2114 states and 2786 transitions. [2024-11-28 02:10:37,301 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 42 states have (on average 3.238095238095238) internal successors, (136), 33 states have internal predecessors, (136), 19 states have call successors, (22), 17 states have call predecessors, (22), 5 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7) [2024-11-28 02:10:37,301 INFO L276 IsEmpty]: Start isEmpty. Operand 2114 states and 2786 transitions. [2024-11-28 02:10:37,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 294 [2024-11-28 02:10:37,313 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:10:37,313 INFO L218 NwaCegarLoop]: trace histogram [22, 19, 19, 19, 19, 19, 19, 19, 18, 18, 18, 15, 12, 12, 7, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:10:37,325 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-28 02:10:37,514 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-28 02:10:37,514 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION === [func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:10:37,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:10:37,515 INFO L85 PathProgramCache]: Analyzing trace with hash 171526968, now seen corresponding path program 3 times [2024-11-28 02:10:37,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:10:37,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706975059] [2024-11-28 02:10:37,516 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:10:37,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:10:37,920 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 02:10:37,921 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:10:41,306 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 1103 proven. 99 refuted. 0 times theorem prover too weak. 1168 trivial. 0 not checked. [2024-11-28 02:10:41,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:10:41,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706975059] [2024-11-28 02:10:41,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706975059] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:41,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [88571199] [2024-11-28 02:10:41,307 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 02:10:41,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:41,308 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:10:41,310 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:10:41,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 02:10:43,584 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-28 02:10:43,584 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 02:10:43,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 1340 conjuncts, 224 conjuncts are in the unsatisfiable core [2024-11-28 02:10:43,607 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:10:43,621 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:10:44,042 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:10:44,932 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 19 treesize of output 11 [2024-11-28 02:10:45,354 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 19 treesize of output 11 [2024-11-28 02:10:45,581 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 02:10:47,006 INFO L134 CoverageAnalysis]: Checked inductivity of 2370 backedges. 1039 proven. 637 refuted. 0 times theorem prover too weak. 694 trivial. 0 not checked. [2024-11-28 02:10:47,006 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:10:47,952 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 21 treesize of output 17 [2024-11-28 02:10:48,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [88571199] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 02:10:48,407 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:10:48,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 28] total 50 [2024-11-28 02:10:48,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003764323] [2024-11-28 02:10:48,408 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:10:48,408 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-28 02:10:48,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:10:48,409 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-28 02:10:48,410 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=2825, Unknown=0, NotChecked=0, Total=2970 [2024-11-28 02:10:48,410 INFO L87 Difference]: Start difference. First operand 2114 states and 2786 transitions. Second operand has 50 states, 42 states have (on average 3.1666666666666665) internal successors, (133), 38 states have internal predecessors, (133), 20 states have call successors, (25), 16 states have call predecessors, (25), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-28 02:10:52,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:10:52,822 INFO L93 Difference]: Finished difference Result 2367 states and 3154 transitions. [2024-11-28 02:10:52,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2024-11-28 02:10:52,823 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 42 states have (on average 3.1666666666666665) internal successors, (133), 38 states have internal predecessors, (133), 20 states have call successors, (25), 16 states have call predecessors, (25), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) Word has length 293 [2024-11-28 02:10:52,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:10:52,826 INFO L225 Difference]: With dead ends: 2367 [2024-11-28 02:10:52,826 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 02:10:52,833 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 365 SyntacticMatches, 2 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2106 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=579, Invalid=9927, Unknown=0, NotChecked=0, Total=10506 [2024-11-28 02:10:52,834 INFO L435 NwaCegarLoop]: 37 mSDtfsCounter, 184 mSDsluCounter, 879 mSDsCounter, 0 mSdLazyCounter, 1694 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 916 SdHoareTripleChecker+Invalid, 1804 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 1694 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-28 02:10:52,834 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 916 Invalid, 1804 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 1694 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-28 02:10:52,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 02:10:52,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 02:10:52,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:10:52,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 02:10:52,838 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 293 [2024-11-28 02:10:52,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:10:52,838 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 02:10:52,839 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 42 states have (on average 3.1666666666666665) internal successors, (133), 38 states have internal predecessors, (133), 20 states have call successors, (25), 16 states have call predecessors, (25), 8 states have return successors, (12), 10 states have call predecessors, (12), 10 states have call successors, (12) [2024-11-28 02:10:52,839 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 02:10:52,839 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 02:10:52,842 INFO L782 garLoopResultBuilder]: Registering result SAFE for location func_to_recursive_line_14_to_16_0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 02:10:52,857 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-28 02:10:53,043 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:10:53,047 INFO L422 BasicCegarLoop]: Path program histogram: [3, 2, 2, 1, 1, 1, 1] [2024-11-28 02:10:53,049 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 02:11:00,729 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:11:00,736 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:11:00 BoogieIcfgContainer [2024-11-28 02:11:00,736 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:11:00,737 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:11:00,737 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:11:00,737 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:11:00,738 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:09:08" (3/4) ... [2024-11-28 02:11:00,740 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:11:00,746 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_12_to_13_0 [2024-11-28 02:11:00,746 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_13_to_14_0 [2024-11-28 02:11:00,747 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_11_to_12_0 [2024-11-28 02:11:00,747 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_14_to_16_0 [2024-11-28 02:11:00,747 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure func_to_recursive_line_10_to_11_0 [2024-11-28 02:11:00,752 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 35 nodes and edges [2024-11-28 02:11:00,753 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2024-11-28 02:11:00,753 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2024-11-28 02:11:00,753 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 02:11:00,873 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:11:00,874 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:11:00,874 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:11:00,874 INFO L158 Benchmark]: Toolchain (without parser) took 113142.33ms. Allocated memory was 142.6MB in the beginning and 637.5MB in the end (delta: 494.9MB). Free memory was 116.6MB in the beginning and 466.1MB in the end (delta: -349.6MB). Peak memory consumption was 141.2MB. Max. memory is 16.1GB. [2024-11-28 02:11:00,875 INFO L158 Benchmark]: CDTParser took 0.69ms. Allocated memory is still 117.4MB. Free memory was 72.7MB in the beginning and 72.5MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:11:00,875 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.25ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 104.4MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:11:00,875 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.76ms. Allocated memory is still 142.6MB. Free memory was 104.4MB in the beginning and 103.1MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:11:00,875 INFO L158 Benchmark]: Boogie Preprocessor took 90.61ms. Allocated memory is still 142.6MB. Free memory was 103.1MB in the beginning and 100.7MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:11:00,876 INFO L158 Benchmark]: RCFGBuilder took 739.00ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 79.5MB in the end (delta: 21.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-11-28 02:11:00,876 INFO L158 Benchmark]: TraceAbstraction took 111797.73ms. Allocated memory was 142.6MB in the beginning and 637.5MB in the end (delta: 494.9MB). Free memory was 79.0MB in the beginning and 470.1MB in the end (delta: -391.1MB). Peak memory consumption was 368.7MB. Max. memory is 16.1GB. [2024-11-28 02:11:00,876 INFO L158 Benchmark]: Witness Printer took 137.02ms. Allocated memory is still 637.5MB. Free memory was 470.1MB in the beginning and 466.1MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:11:00,878 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.69ms. Allocated memory is still 117.4MB. Free memory was 72.7MB in the beginning and 72.5MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.25ms. Allocated memory is still 142.6MB. Free memory was 116.3MB in the beginning and 104.4MB in the end (delta: 12.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.76ms. Allocated memory is still 142.6MB. Free memory was 104.4MB in the beginning and 103.1MB in the end (delta: 1.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 90.61ms. Allocated memory is still 142.6MB. Free memory was 103.1MB in the beginning and 100.7MB in the end (delta: 2.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 739.00ms. Allocated memory is still 142.6MB. Free memory was 100.5MB in the beginning and 79.5MB in the end (delta: 21.0MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * TraceAbstraction took 111797.73ms. Allocated memory was 142.6MB in the beginning and 637.5MB in the end (delta: 494.9MB). Free memory was 79.0MB in the beginning and 470.1MB in the end (delta: -391.1MB). Peak memory consumption was 368.7MB. Max. memory is 16.1GB. * Witness Printer took 137.02ms. Allocated memory is still 637.5MB. Free memory was 470.1MB in the beginning and 466.1MB in the end (delta: 4.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 32]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 51 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 104.0s, OverallIterations: 11, TraceHistogramMax: 22, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.1s, AutomataDifference: 48.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3118 SdHoareTripleChecker+Valid, 16.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3115 mSDsluCounter, 11807 SdHoareTripleChecker+Invalid, 14.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11167 mSDsCounter, 1050 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18531 IncrementalHoareTripleChecker+Invalid, 19581 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1050 mSolverCounterUnsat, 640 mSDtfsCounter, 18531 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2485 GetRequests, 1511 SyntacticMatches, 6 SemanticMatches, 968 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35154 ImplicationChecksByTransitivity, 47.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2114occurred in iteration=10, InterpolantAutomatonStates: 702, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 1017 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.7s SsaConstructionTime, 4.5s SatisfiabilityAnalysisTime, 45.6s InterpolantComputationTime, 2096 NumberOfCodeBlocks, 1772 NumberOfCodeBlocksAsserted, 31 NumberOfCheckSat, 2363 ConstructedInterpolants, 274 QuantifiedInterpolants, 22024 SizeOfPredicates, 313 NumberOfNonLiveVariables, 8635 ConjunctsInSsa, 1519 ConjunctsInUnsatCore, 23 InterpolantComputations, 4 PerfectInterpolantSequences, 7668/9241 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-11-28 02:11:00,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7f8197c7-7a60-41e6-bf27-3f3db495a926/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE