./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array18_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array18_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd --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 4d58909a91b196e39d7623dd2e1e4d9b2698d6fa8ff06c2897eb5762e2e2e408 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:15:35,707 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:15:35,798 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:15:35,803 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:15:35,803 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:15:35,827 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:15:35,827 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:15:35,828 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:15:35,828 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:15:35,828 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:15:35,828 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:15:35,828 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:15:35,829 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:15:35,829 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:15:35,829 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:15:35,829 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:15:35,829 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:15:35,829 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:15:35,829 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:15:35,829 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:15:35,830 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:15:35,830 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:15:35,830 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:15:35,830 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:15:35,830 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:15:35,830 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:15:35,830 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:15:35,830 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:15:35,830 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:15:35,831 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:15:35,831 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:15:35,831 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:15:35,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:15:35,831 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:15:35,831 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:15:35,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:15:35,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:15:35,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:15:35,831 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:15:35,831 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:15:35,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:15:35,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:15:35,832 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_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd 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 -> 4d58909a91b196e39d7623dd2e1e4d9b2698d6fa8ff06c2897eb5762e2e2e408 [2024-11-13 14:15:36,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:15:36,144 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:15:36,147 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:15:36,149 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:15:36,149 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:15:36,151 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/array-patterns/array18_pattern.c Unable to find full path for "g++" [2024-11-13 14:15:38,346 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:15:38,749 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:15:38,750 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/sv-benchmarks/c/array-patterns/array18_pattern.c [2024-11-13 14:15:38,762 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/data/c80fd7fe4/d4c1a20b596947efa546d1c81c6284b9/FLAG25c2ace88 [2024-11-13 14:15:38,781 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/data/c80fd7fe4/d4c1a20b596947efa546d1c81c6284b9 [2024-11-13 14:15:38,785 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:15:38,787 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:15:38,788 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:15:38,789 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:15:38,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:15:38,796 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:15:38" (1/1) ... [2024-11-13 14:15:38,797 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c7d1cd5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:38, skipping insertion in model container [2024-11-13 14:15:38,798 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:15:38" (1/1) ... [2024-11-13 14:15:38,818 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:15:38,999 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_da62bd81-ed23-46cc-8a92-46de818ae79b/sv-benchmarks/c/array-patterns/array18_pattern.c[1444,1457] [2024-11-13 14:15:39,043 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:15:39,057 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:15:39,072 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_da62bd81-ed23-46cc-8a92-46de818ae79b/sv-benchmarks/c/array-patterns/array18_pattern.c[1444,1457] [2024-11-13 14:15:39,090 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:15:39,109 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:15:39,110 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:39 WrapperNode [2024-11-13 14:15:39,110 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:15:39,112 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:15:39,112 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:15:39,112 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:15:39,121 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:39" (1/1) ... [2024-11-13 14:15:39,129 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:39" (1/1) ... [2024-11-13 14:15:39,155 INFO L138 Inliner]: procedures = 16, calls = 20, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 99 [2024-11-13 14:15:39,156 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:15:39,156 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:15:39,160 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:15:39,161 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:15:39,173 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:39" (1/1) ... [2024-11-13 14:15:39,173 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:39" (1/1) ... [2024-11-13 14:15:39,180 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:39" (1/1) ... [2024-11-13 14:15:39,209 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 3 writes are split as follows [0, 3]. [2024-11-13 14:15:39,210 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:39" (1/1) ... [2024-11-13 14:15:39,210 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:39" (1/1) ... [2024-11-13 14:15:39,223 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:39" (1/1) ... [2024-11-13 14:15:39,232 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:39" (1/1) ... [2024-11-13 14:15:39,240 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:39" (1/1) ... [2024-11-13 14:15:39,241 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:39" (1/1) ... [2024-11-13 14:15:39,247 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:15:39,248 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:15:39,249 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:15:39,249 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:15:39,250 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:39" (1/1) ... [2024-11-13 14:15:39,258 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:15:39,283 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:15:39,302 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:15:39,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:15:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:15:39,342 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-13 14:15:39,343 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-13 14:15:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:15:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:15:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-13 14:15:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:15:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:15:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:15:39,343 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:15:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:15:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:15:39,343 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-13 14:15:39,475 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:15:39,478 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:15:39,862 INFO L? ?]: Removed 19 outVars from TransFormulas that were not future-live. [2024-11-13 14:15:39,862 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:15:39,882 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:15:39,882 INFO L316 CfgBuilder]: Removed 5 assume(true) statements. [2024-11-13 14:15:39,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:15:39 BoogieIcfgContainer [2024-11-13 14:15:39,883 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:15:39,886 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:15:39,886 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:15:39,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:15:39,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:15:38" (1/3) ... [2024-11-13 14:15:39,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4909dcab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:15:39, skipping insertion in model container [2024-11-13 14:15:39,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:15:39" (2/3) ... [2024-11-13 14:15:39,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4909dcab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:15:39, skipping insertion in model container [2024-11-13 14:15:39,902 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:15:39" (3/3) ... [2024-11-13 14:15:39,903 INFO L112 eAbstractionObserver]: Analyzing ICFG array18_pattern.c [2024-11-13 14:15:39,924 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:15:39,926 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG array18_pattern.c that has 2 procedures, 31 locations, 1 initial locations, 5 loop locations, and 1 error locations. [2024-11-13 14:15:39,993 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:15:40,009 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;@73156ed0, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:15:40,010 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-13 14:15:40,015 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 25 states have (on average 1.64) internal successors, (41), 26 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:15:40,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-13 14:15:40,024 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:15:40,025 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:15:40,026 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:15:40,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:15:40,032 INFO L85 PathProgramCache]: Analyzing trace with hash 425251968, now seen corresponding path program 1 times [2024-11-13 14:15:40,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:15:40,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340182901] [2024-11-13 14:15:40,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:40,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:15:40,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:40,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:15:40,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:40,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:15:40,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:15:40,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340182901] [2024-11-13 14:15:40,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340182901] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:15:40,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:15:40,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:15:40,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270591404] [2024-11-13 14:15:40,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:15:40,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:15:40,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:15:40,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:15:40,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:15:40,286 INFO L87 Difference]: Start difference. First operand has 31 states, 25 states have (on average 1.64) internal successors, (41), 26 states have internal predecessors, (41), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:15:40,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:15:40,321 INFO L93 Difference]: Finished difference Result 59 states and 93 transitions. [2024-11-13 14:15:40,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:15:40,325 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-13 14:15:40,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:15:40,333 INFO L225 Difference]: With dead ends: 59 [2024-11-13 14:15:40,333 INFO L226 Difference]: Without dead ends: 27 [2024-11-13 14:15:40,338 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:15:40,344 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:15:40,348 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:15:40,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-13 14:15:40,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-11-13 14:15:40,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 22 states have internal predecessors, (29), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:15:40,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 35 transitions. [2024-11-13 14:15:40,400 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 35 transitions. Word has length 15 [2024-11-13 14:15:40,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:15:40,400 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 35 transitions. [2024-11-13 14:15:40,401 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-13 14:15:40,401 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 35 transitions. [2024-11-13 14:15:40,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 14:15:40,403 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:15:40,403 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:15:40,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:15:40,405 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:15:40,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:15:40,407 INFO L85 PathProgramCache]: Analyzing trace with hash 147814355, now seen corresponding path program 1 times [2024-11-13 14:15:40,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:15:40,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462985662] [2024-11-13 14:15:40,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:40,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:15:40,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:40,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:15:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:40,737 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-13 14:15:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:40,753 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 14:15:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:40,773 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:15:40,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:15:40,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462985662] [2024-11-13 14:15:40,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462985662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:15:40,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:15:40,774 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-13 14:15:40,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964850543] [2024-11-13 14:15:40,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:15:40,778 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:15:40,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:15:40,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:15:40,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:15:40,780 INFO L87 Difference]: Start difference. First operand 27 states and 35 transitions. Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:15:40,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:15:40,865 INFO L93 Difference]: Finished difference Result 50 states and 64 transitions. [2024-11-13 14:15:40,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:15:40,868 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 30 [2024-11-13 14:15:40,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:15:40,869 INFO L225 Difference]: With dead ends: 50 [2024-11-13 14:15:40,869 INFO L226 Difference]: Without dead ends: 30 [2024-11-13 14:15:40,869 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:15:40,873 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 1 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:15:40,873 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 58 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:15:40,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-13 14:15:40,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2024-11-13 14:15:40,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.2916666666666667) internal successors, (31), 24 states have internal predecessors, (31), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:15:40,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 37 transitions. [2024-11-13 14:15:40,885 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 37 transitions. Word has length 30 [2024-11-13 14:15:40,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:15:40,887 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 37 transitions. [2024-11-13 14:15:40,888 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2024-11-13 14:15:40,889 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 37 transitions. [2024-11-13 14:15:40,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-13 14:15:40,890 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:15:40,890 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:15:40,891 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:15:40,891 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:15:40,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:15:40,893 INFO L85 PathProgramCache]: Analyzing trace with hash 957160981, now seen corresponding path program 1 times [2024-11-13 14:15:40,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:15:40,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143017905] [2024-11-13 14:15:40,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:40,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:15:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:41,275 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:15:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:41,284 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-13 14:15:41,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:41,305 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 14:15:41,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:41,316 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:15:41,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:15:41,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143017905] [2024-11-13 14:15:41,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143017905] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:15:41,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:15:41,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:15:41,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326450641] [2024-11-13 14:15:41,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:15:41,317 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:15:41,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:15:41,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:15:41,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:15:41,319 INFO L87 Difference]: Start difference. First operand 29 states and 37 transitions. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:15:41,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:15:41,344 INFO L93 Difference]: Finished difference Result 36 states and 45 transitions. [2024-11-13 14:15:41,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:15:41,345 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 30 [2024-11-13 14:15:41,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:15:41,346 INFO L225 Difference]: With dead ends: 36 [2024-11-13 14:15:41,347 INFO L226 Difference]: Without dead ends: 32 [2024-11-13 14:15:41,347 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:15:41,348 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 10 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-13 14:15:41,349 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 79 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-13 14:15:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-11-13 14:15:41,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-11-13 14:15:41,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 27 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:15:41,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2024-11-13 14:15:41,357 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 41 transitions. Word has length 30 [2024-11-13 14:15:41,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:15:41,357 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 41 transitions. [2024-11-13 14:15:41,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:15:41,358 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 41 transitions. [2024-11-13 14:15:41,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-13 14:15:41,359 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:15:41,359 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:15:41,359 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-13 14:15:41,360 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:15:41,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:15:41,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1535670749, now seen corresponding path program 1 times [2024-11-13 14:15:41,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:15:41,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533692967] [2024-11-13 14:15:41,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:41,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:15:41,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:41,591 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:15:41,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:41,597 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2024-11-13 14:15:41,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:41,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-13 14:15:41,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:41,612 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-13 14:15:41,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:15:41,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533692967] [2024-11-13 14:15:41,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533692967] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:15:41,613 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:15:41,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-13 14:15:41,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432188859] [2024-11-13 14:15:41,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:15:41,614 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-13 14:15:41,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:15:41,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-13 14:15:41,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:15:41,615 INFO L87 Difference]: Start difference. First operand 32 states and 41 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:15:41,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:15:41,735 INFO L93 Difference]: Finished difference Result 66 states and 85 transitions. [2024-11-13 14:15:41,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:15:41,736 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 34 [2024-11-13 14:15:41,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:15:41,737 INFO L225 Difference]: With dead ends: 66 [2024-11-13 14:15:41,737 INFO L226 Difference]: Without dead ends: 40 [2024-11-13 14:15:41,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-13 14:15:41,739 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 14 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:15:41,739 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 59 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:15:41,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-11-13 14:15:41,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 33. [2024-11-13 14:15:41,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.2857142857142858) internal successors, (36), 28 states have internal predecessors, (36), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:15:41,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 42 transitions. [2024-11-13 14:15:41,747 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 42 transitions. Word has length 34 [2024-11-13 14:15:41,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:15:41,748 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 42 transitions. [2024-11-13 14:15:41,748 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:15:41,748 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 42 transitions. [2024-11-13 14:15:41,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-13 14:15:41,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:15:41,749 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:15:41,750 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:15:41,750 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:15:41,751 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:15:41,751 INFO L85 PathProgramCache]: Analyzing trace with hash -749799001, now seen corresponding path program 1 times [2024-11-13 14:15:41,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:15:41,752 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791653432] [2024-11-13 14:15:41,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:41,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:15:41,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:41,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:15:41,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:41,972 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-13 14:15:41,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:41,978 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2024-11-13 14:15:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:41,985 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 14:15:41,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:15:41,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791653432] [2024-11-13 14:15:41,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791653432] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:15:41,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:15:41,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-13 14:15:41,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795411397] [2024-11-13 14:15:41,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:15:41,988 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-13 14:15:41,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:15:41,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-13 14:15:41,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:15:41,991 INFO L87 Difference]: Start difference. First operand 33 states and 42 transitions. Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:15:42,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:15:42,068 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2024-11-13 14:15:42,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-13 14:15:42,069 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 37 [2024-11-13 14:15:42,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:15:42,070 INFO L225 Difference]: With dead ends: 65 [2024-11-13 14:15:42,070 INFO L226 Difference]: Without dead ends: 37 [2024-11-13 14:15:42,070 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-13 14:15:42,071 INFO L432 NwaCegarLoop]: 29 mSDtfsCounter, 7 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:15:42,071 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 53 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:15:42,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-13 14:15:42,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 33. [2024-11-13 14:15:42,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:15:42,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2024-11-13 14:15:42,089 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 37 [2024-11-13 14:15:42,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:15:42,090 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2024-11-13 14:15:42,090 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 4 states have internal predecessors, (25), 2 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:15:42,090 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2024-11-13 14:15:42,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 14:15:42,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:15:42,093 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:15:42,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:15:42,094 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:15:42,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:15:42,094 INFO L85 PathProgramCache]: Analyzing trace with hash 701116145, now seen corresponding path program 1 times [2024-11-13 14:15:42,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:15:42,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775465800] [2024-11-13 14:15:42,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:42,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:15:42,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:15:42,148 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1656268071] [2024-11-13 14:15:42,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:15:42,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:15:42,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:15:42,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:15:42,155 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:15:42,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:15:42,279 INFO L255 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 41 conjuncts are in the unsatisfiable core [2024-11-13 14:15:42,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:15:43,026 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 [2024-11-13 14:15:43,274 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:15:43,274 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:15:43,593 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 71 [2024-11-13 14:15:43,622 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:15:43,623 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 71 treesize of output 160 [2024-11-13 14:15:43,886 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:15:43,886 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 330 treesize of output 323 [2024-11-13 14:16:20,328 WARN L286 SmtUtils]: Spent 8.51s on a formula simplification that was a NOOP. DAG size: 67 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 14:16:20,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:20,333 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775465800] [2024-11-13 14:16:20,333 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:16:20,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1656268071] [2024-11-13 14:16:20,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1656268071] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:16:20,334 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:16:20,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2024-11-13 14:16:20,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841077070] [2024-11-13 14:16:20,335 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:16:20,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-13 14:16:20,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:20,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-13 14:16:20,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=700, Unknown=1, NotChecked=0, Total=812 [2024-11-13 14:16:20,337 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand has 20 states, 20 states have (on average 1.6) internal successors, (32), 18 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:16:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:21,428 INFO L93 Difference]: Finished difference Result 110 states and 140 transitions. [2024-11-13 14:16:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-13 14:16:21,428 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 18 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 38 [2024-11-13 14:16:21,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:21,431 INFO L225 Difference]: With dead ends: 110 [2024-11-13 14:16:21,431 INFO L226 Difference]: Without dead ends: 81 [2024-11-13 14:16:21,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 413 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=266, Invalid=1625, Unknown=1, NotChecked=0, Total=1892 [2024-11-13 14:16:21,436 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 97 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 452 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:21,436 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 150 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 452 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:16:21,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-13 14:16:21,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 64. [2024-11-13 14:16:21,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 55 states have (on average 1.2727272727272727) internal successors, (70), 55 states have internal predecessors, (70), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:16:21,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 80 transitions. [2024-11-13 14:16:21,463 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 80 transitions. Word has length 38 [2024-11-13 14:16:21,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:21,465 INFO L471 AbstractCegarLoop]: Abstraction has 64 states and 80 transitions. [2024-11-13 14:16:21,465 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 1.6) internal successors, (32), 18 states have internal predecessors, (32), 2 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2024-11-13 14:16:21,465 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 80 transitions. [2024-11-13 14:16:21,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-13 14:16:21,466 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:21,466 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:16:21,493 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-13 14:16:21,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:21,667 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:21,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:21,668 INFO L85 PathProgramCache]: Analyzing trace with hash -51835667, now seen corresponding path program 1 times [2024-11-13 14:16:21,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:21,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340285463] [2024-11-13 14:16:21,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:21,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:21,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:22,176 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:16:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:22,179 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:16:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:22,237 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 14:16:22,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:22,317 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-13 14:16:22,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:22,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340285463] [2024-11-13 14:16:22,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340285463] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:16:22,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102682100] [2024-11-13 14:16:22,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:22,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:22,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:16:22,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:16:22,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-13 14:16:22,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:22,424 INFO L255 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-13 14:16:22,427 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:16:22,653 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-13 14:16:22,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:16:23,070 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-13 14:16:23,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102682100] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:16:23,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:16:23,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 23 [2024-11-13 14:16:23,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [437350176] [2024-11-13 14:16:23,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:16:23,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-13 14:16:23,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:23,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-13 14:16:23,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2024-11-13 14:16:23,075 INFO L87 Difference]: Start difference. First operand 64 states and 80 transitions. Second operand has 23 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 17 states have internal predecessors, (45), 6 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-13 14:16:23,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:23,828 INFO L93 Difference]: Finished difference Result 135 states and 166 transitions. [2024-11-13 14:16:23,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-11-13 14:16:23,829 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 17 states have internal predecessors, (45), 6 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 38 [2024-11-13 14:16:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:23,832 INFO L225 Difference]: With dead ends: 135 [2024-11-13 14:16:23,834 INFO L226 Difference]: Without dead ends: 103 [2024-11-13 14:16:23,835 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 68 SyntacticMatches, 3 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=218, Invalid=838, Unknown=0, NotChecked=0, Total=1056 [2024-11-13 14:16:23,839 INFO L432 NwaCegarLoop]: 34 mSDtfsCounter, 105 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:23,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [106 Valid, 236 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-13 14:16:23,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-13 14:16:23,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 77. [2024-11-13 14:16:23,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 67 states have internal predecessors, (85), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 14:16:23,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2024-11-13 14:16:23,881 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 38 [2024-11-13 14:16:23,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:23,882 INFO L471 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2024-11-13 14:16:23,882 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 2.3684210526315788) internal successors, (45), 17 states have internal predecessors, (45), 6 states have call successors, (7), 3 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2024-11-13 14:16:23,882 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2024-11-13 14:16:23,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-13 14:16:23,884 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:23,884 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:16:23,911 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-13 14:16:24,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:24,092 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:24,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:24,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1875386670, now seen corresponding path program 2 times [2024-11-13 14:16:24,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:24,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277704416] [2024-11-13 14:16:24,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:24,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:24,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:24,322 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:16:24,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:24,327 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:16:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:24,339 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 14:16:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:16:24,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:24,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277704416] [2024-11-13 14:16:24,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277704416] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:16:24,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401037540] [2024-11-13 14:16:24,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:16:24,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:24,348 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:16:24,350 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:16:24,353 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-13 14:16:24,504 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:16:24,504 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:16:24,506 INFO L255 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:16:24,509 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:16:24,624 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 14:16:24,624 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:16:24,746 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 14:16:24,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401037540] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:16:24,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:16:24,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 16 [2024-11-13 14:16:24,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49720294] [2024-11-13 14:16:24,747 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:16:24,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-13 14:16:24,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:24,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-13 14:16:24,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2024-11-13 14:16:24,750 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:16:25,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:25,423 INFO L93 Difference]: Finished difference Result 167 states and 218 transitions. [2024-11-13 14:16:25,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-13 14:16:25,424 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 39 [2024-11-13 14:16:25,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:25,426 INFO L225 Difference]: With dead ends: 167 [2024-11-13 14:16:25,426 INFO L226 Difference]: Without dead ends: 104 [2024-11-13 14:16:25,427 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=166, Invalid=704, Unknown=0, NotChecked=0, Total=870 [2024-11-13 14:16:25,432 INFO L432 NwaCegarLoop]: 24 mSDtfsCounter, 61 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 356 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:25,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 165 Invalid, 356 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-13 14:16:25,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-13 14:16:25,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 98. [2024-11-13 14:16:25,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 88 states have internal predecessors, (111), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 5 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-13 14:16:25,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 123 transitions. [2024-11-13 14:16:25,465 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 123 transitions. Word has length 39 [2024-11-13 14:16:25,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:25,466 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 123 transitions. [2024-11-13 14:16:25,466 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.1875) internal successors, (51), 16 states have internal predecessors, (51), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:16:25,466 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 123 transitions. [2024-11-13 14:16:25,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-13 14:16:25,471 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:25,471 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:16:25,479 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-13 14:16:25,672 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-11-13 14:16:25,672 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:25,672 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:25,673 INFO L85 PathProgramCache]: Analyzing trace with hash -599209729, now seen corresponding path program 3 times [2024-11-13 14:16:25,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:25,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039759268] [2024-11-13 14:16:25,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:25,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:25,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:25,884 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:16:25,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:25,889 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-13 14:16:25,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:25,895 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-13 14:16:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:25,902 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-13 14:16:25,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:25,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039759268] [2024-11-13 14:16:25,903 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039759268] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:16:25,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417127253] [2024-11-13 14:16:25,903 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-13 14:16:25,903 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:25,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:16:25,906 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:16:25,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-13 14:16:26,285 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-11-13 14:16:26,285 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:16:26,287 INFO L255 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:16:26,289 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:16:26,365 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:16:26,365 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:16:26,447 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-13 14:16:26,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [417127253] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:16:26,448 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:16:26,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 13 [2024-11-13 14:16:26,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577702840] [2024-11-13 14:16:26,448 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:16:26,449 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-13 14:16:26,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:26,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-13 14:16:26,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:16:26,450 INFO L87 Difference]: Start difference. First operand 98 states and 123 transitions. Second operand has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:16:26,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:26,796 INFO L93 Difference]: Finished difference Result 134 states and 161 transitions. [2024-11-13 14:16:26,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-13 14:16:26,797 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 42 [2024-11-13 14:16:26,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:26,798 INFO L225 Difference]: With dead ends: 134 [2024-11-13 14:16:26,798 INFO L226 Difference]: Without dead ends: 67 [2024-11-13 14:16:26,799 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 88 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2024-11-13 14:16:26,799 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 28 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 165 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 131 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 165 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:26,800 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 131 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 165 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-13 14:16:26,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2024-11-13 14:16:26,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2024-11-13 14:16:26,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 57 states have (on average 1.2456140350877194) internal successors, (71), 57 states have internal predecessors, (71), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:16:26,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 77 transitions. [2024-11-13 14:16:26,814 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 77 transitions. Word has length 42 [2024-11-13 14:16:26,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:26,814 INFO L471 AbstractCegarLoop]: Abstraction has 63 states and 77 transitions. [2024-11-13 14:16:26,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.0) internal successors, (52), 13 states have internal predecessors, (52), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:16:26,814 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 77 transitions. [2024-11-13 14:16:26,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-13 14:16:26,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:26,816 INFO L215 NwaCegarLoop]: trace histogram [4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-13 14:16:26,824 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-13 14:16:27,016 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2024-11-13 14:16:27,017 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:27,018 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:27,018 INFO L85 PathProgramCache]: Analyzing trace with hash -245440349, now seen corresponding path program 4 times [2024-11-13 14:16:27,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:27,018 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192809251] [2024-11-13 14:16:27,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:27,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:27,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:27,203 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-13 14:16:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:27,206 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-13 14:16:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:27,212 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-13 14:16:27,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:16:27,220 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 14:16:27,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:16:27,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192809251] [2024-11-13 14:16:27,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192809251] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:16:27,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498651590] [2024-11-13 14:16:27,221 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-13 14:16:27,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:27,221 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:16:27,223 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:16:27,226 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-13 14:16:27,319 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-13 14:16:27,320 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:16:27,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-13 14:16:27,323 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:16:27,421 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-13 14:16:27,421 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:16:27,530 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2024-11-13 14:16:27,530 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498651590] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:16:27,530 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:16:27,530 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 11 [2024-11-13 14:16:27,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099193077] [2024-11-13 14:16:27,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:16:27,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-13 14:16:27,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:16:27,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-13 14:16:27,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2024-11-13 14:16:27,532 INFO L87 Difference]: Start difference. First operand 63 states and 77 transitions. Second operand has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:16:27,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:16:27,706 INFO L93 Difference]: Finished difference Result 67 states and 80 transitions. [2024-11-13 14:16:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-13 14:16:27,707 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 44 [2024-11-13 14:16:27,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:16:27,709 INFO L225 Difference]: With dead ends: 67 [2024-11-13 14:16:27,709 INFO L226 Difference]: Without dead ends: 61 [2024-11-13 14:16:27,709 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 86 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2024-11-13 14:16:27,710 INFO L432 NwaCegarLoop]: 25 mSDtfsCounter, 11 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-13 14:16:27,710 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 128 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-13 14:16:27,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-13 14:16:27,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-13 14:16:27,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 55 states have (on average 1.2363636363636363) internal successors, (68), 55 states have internal predecessors, (68), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:16:27,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2024-11-13 14:16:27,729 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 44 [2024-11-13 14:16:27,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:16:27,729 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2024-11-13 14:16:27,729 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.5454545454545454) internal successors, (39), 11 states have internal predecessors, (39), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-13 14:16:27,729 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2024-11-13 14:16:27,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 14:16:27,730 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:16:27,730 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2024-11-13 14:16:27,759 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-13 14:16:27,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2024-11-13 14:16:27,932 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:16:27,932 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:16:27,932 INFO L85 PathProgramCache]: Analyzing trace with hash 431937781, now seen corresponding path program 5 times [2024-11-13 14:16:27,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:16:27,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808400771] [2024-11-13 14:16:27,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:16:27,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:16:27,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:16:27,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [602101684] [2024-11-13 14:16:27,969 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-13 14:16:27,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:16:27,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:16:27,972 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:16:27,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-13 14:16:29,432 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2024-11-13 14:16:29,433 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:16:29,435 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 92 conjuncts are in the unsatisfiable core [2024-11-13 14:16:29,442 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:16:29,520 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 [2024-11-13 14:16:29,576 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 14:16:29,848 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:16:29,849 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 28 [2024-11-13 14:16:29,951 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:16:29,952 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 6 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 33 treesize of output 38 [2024-11-13 14:16:31,156 INFO L349 Elim1Store]: treesize reduction 224, result has 31.9 percent of original size [2024-11-13 14:16:31,156 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 8 select indices, 8 select index equivalence classes, 6 disjoint index pairs (out of 28 index pairs), introduced 8 new quantified variables, introduced 36 case distinctions, treesize of input 74 treesize of output 144 [2024-11-13 14:16:31,553 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 122 treesize of output 100 [2024-11-13 14:16:31,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,572 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,575 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,586 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,591 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,618 INFO L349 Elim1Store]: treesize reduction 94, result has 1.1 percent of original size [2024-11-13 14:16:31,618 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 17 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 4 case distinctions, treesize of input 100 treesize of output 199 [2024-11-13 14:16:31,721 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,723 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,725 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,730 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,747 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,759 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,770 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-13 14:16:31,771 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:16:31,832 INFO L349 Elim1Store]: treesize reduction 56, result has 41.1 percent of original size [2024-11-13 14:16:31,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 19 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 4 case distinctions, treesize of input 110 treesize of output 77 [2024-11-13 14:16:33,459 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-13 14:16:33,460 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 39 [2024-11-13 14:16:33,545 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 8 proven. 41 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-13 14:16:33,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:16:45,021 WARN L286 SmtUtils]: Spent 5.92s on a formula simplification that was a NOOP. DAG size: 55 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-13 14:17:07,574 WARN L286 SmtUtils]: Spent 7.05s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:17:22,055 WARN L286 SmtUtils]: Spent 6.01s on a formula simplification that was a NOOP. DAG size: 40 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:17:36,952 WARN L286 SmtUtils]: Spent 8.15s on a formula simplification that was a NOOP. DAG size: 41 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:17:49,685 WARN L286 SmtUtils]: Spent 6.59s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:18:02,745 WARN L286 SmtUtils]: Spent 6.17s on a formula simplification that was a NOOP. DAG size: 10 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:18:24,352 WARN L286 SmtUtils]: Spent 8.01s on a formula simplification that was a NOOP. DAG size: 9 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-13 14:19:20,735 WARN L873 $PredicateComparison]: unable to prove that (let ((.cse8 (* c_~ARR_SIZE~0 4))) (let ((.cse3 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse8)) (.cse4 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| 4)) (.cse5 (+ |c_ULTIMATE.start_main_~#array~0#1.offset| .cse8 4)) (.cse11 (* |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1| |c_ULTIMATE.start_main_~num~0#1|)) (.cse14 (select |c_#memory_int#1| |c_ULTIMATE.start_main_~#array~0#1.base|)) (.cse9 (mod (+ c_~ARR_SIZE~0 4294967295) 4294967296))) (and (forall ((v_z_22 Int)) (or (< 4294967295 v_z_22) (forall ((v_y_22 Int)) (let ((.cse0 (* v_y_22 4294967296)) (.cse1 (* v_z_22 4294967295))) (let ((.cse13 (+ .cse0 .cse1)) (.cse7 (* 17179869184 v_y_22)) (.cse10 (* 17179869180 v_z_22))) (let ((.cse6 (store .cse14 (+ (* .cse13 .cse8) .cse7 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse10) |c_ULTIMATE.start_main_~num~0#1|))) (or (< c_~ARR_SIZE~0 (+ .cse0 .cse1 1)) (= (let ((.cse2 (store .cse6 (+ .cse7 (* .cse8 (+ .cse9 (- 8589934592) v_z_22)) |c_ULTIMATE.start_main_~#array~0#1.offset| .cse10) .cse11))) (+ (select .cse2 .cse3) (select .cse2 |c_ULTIMATE.start_main_~#array~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse2 .cse4) (select .cse2 .cse5))) 1) (= 0 (let ((.cse12 (store .cse6 (+ (* (+ .cse9 v_z_22 (- 4294967296)) .cse8) .cse7 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse10) .cse11))) (+ (select .cse12 .cse4) (select .cse12 |c_ULTIMATE.start_main_~#array~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse12 .cse3) (select .cse12 .cse5)))) (< .cse13 0)))))) (< (+ .cse9 v_z_22) 6442450944))) (forall ((v_z_18 Int)) (let ((.cse15 (+ .cse9 v_z_18))) (or (< .cse15 4294967296) (forall ((v_y_18 Int)) (let ((.cse17 (* v_y_18 4294967296)) (.cse18 (* v_z_18 4294967295))) (let ((.cse23 (* 17179869180 v_z_18)) (.cse24 (* 17179869184 v_y_18)) (.cse20 (+ .cse17 .cse18))) (let ((.cse22 (store .cse14 (+ .cse23 .cse24 |c_ULTIMATE.start_main_~#array~0#1.offset| (* .cse20 .cse8)) |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse16 (let ((.cse25 (store .cse22 (+ .cse23 .cse24 |c_ULTIMATE.start_main_~#array~0#1.offset| (* (+ .cse9 v_z_18 (- 4294967296)) .cse8)) .cse11))) (+ (select .cse25 .cse3) (select .cse25 .cse4) |c_ULTIMATE.start_main_~sum~0#1| (select .cse25 .cse5) (select .cse25 |c_ULTIMATE.start_main_~#array~0#1.offset|)))) (.cse19 (let ((.cse21 (store .cse22 (+ .cse23 (* .cse15 .cse8) .cse24 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse11))) (+ (select .cse21 .cse4) |c_ULTIMATE.start_main_~sum~0#1| (select .cse21 .cse5) (select .cse21 |c_ULTIMATE.start_main_~#array~0#1.offset|) (select .cse21 .cse3))))) (or (= 1 .cse16) (< c_~ARR_SIZE~0 (+ .cse17 .cse18 1)) (= .cse19 0) (= 0 .cse16) (= .cse19 1) (< .cse20 0))))))) (< 4294967295 v_z_18) (< 6442450943 .cse15)))) (forall ((v_z_18 Int)) (let ((.cse26 (+ .cse9 v_z_18))) (or (< 2147483647 .cse26) (forall ((v_y_18 Int)) (let ((.cse27 (* v_y_18 4294967296)) (.cse28 (* v_z_18 4294967295))) (let ((.cse30 (+ .cse27 .cse28))) (let ((.cse29 (let ((.cse31 (let ((.cse32 (* 17179869180 v_z_18)) (.cse33 (* 17179869184 v_y_18))) (store (store .cse14 (+ .cse32 .cse33 |c_ULTIMATE.start_main_~#array~0#1.offset| (* .cse30 .cse8)) |c_ULTIMATE.start_main_~num~0#1|) (+ .cse32 (* .cse26 .cse8) .cse33 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse11)))) (+ (select .cse31 .cse4) |c_ULTIMATE.start_main_~sum~0#1| (select .cse31 .cse5) (select .cse31 |c_ULTIMATE.start_main_~#array~0#1.offset|) (select .cse31 .cse3))))) (or (< c_~ARR_SIZE~0 (+ .cse27 .cse28 1)) (= .cse29 0) (= .cse29 1) (< .cse30 0)))))) (< v_z_18 0)))) (forall ((v_z_22 Int)) (let ((.cse34 (+ .cse9 v_z_22))) (or (< .cse34 2147483648) (< v_z_22 0) (forall ((v_y_22 Int)) (let ((.cse35 (* v_y_22 4294967296)) (.cse36 (* v_z_22 4294967295))) (let ((.cse42 (+ .cse35 .cse36)) (.cse39 (* 17179869184 v_y_22)) (.cse40 (* 17179869180 v_z_22))) (let ((.cse38 (store .cse14 (+ (* .cse42 .cse8) .cse39 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse40) |c_ULTIMATE.start_main_~num~0#1|))) (or (< c_~ARR_SIZE~0 (+ .cse35 .cse36 1)) (= (let ((.cse37 (store .cse38 (+ .cse39 (* .cse8 (+ .cse9 (- 8589934592) v_z_22)) |c_ULTIMATE.start_main_~#array~0#1.offset| .cse40) .cse11))) (+ (select .cse37 .cse3) (select .cse37 |c_ULTIMATE.start_main_~#array~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse37 .cse4) (select .cse37 .cse5))) 1) (= 0 (let ((.cse41 (store .cse38 (+ (* (+ .cse9 v_z_22 (- 4294967296)) .cse8) .cse39 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse40) .cse11))) (+ (select .cse41 .cse4) (select .cse41 |c_ULTIMATE.start_main_~#array~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse41 .cse3) (select .cse41 .cse5)))) (< .cse42 0)))))) (< 4294967295 .cse34)))) (forall ((v_z_18 Int)) (let ((.cse52 (+ .cse9 v_z_18))) (or (forall ((v_y_18 Int)) (let ((.cse47 (* v_y_18 4294967296)) (.cse48 (* v_z_18 4294967295))) (let ((.cse45 (* 17179869180 v_z_18)) (.cse46 (* 17179869184 v_y_18)) (.cse50 (+ .cse47 .cse48))) (let ((.cse44 (store .cse14 (+ .cse45 .cse46 |c_ULTIMATE.start_main_~#array~0#1.offset| (* .cse50 .cse8)) |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse49 (let ((.cse51 (store .cse44 (+ .cse45 (* .cse52 .cse8) .cse46 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse11))) (+ (select .cse51 .cse4) |c_ULTIMATE.start_main_~sum~0#1| (select .cse51 .cse5) (select .cse51 |c_ULTIMATE.start_main_~#array~0#1.offset|) (select .cse51 .cse3))))) (or (= 1 (let ((.cse43 (store .cse44 (+ .cse45 .cse46 |c_ULTIMATE.start_main_~#array~0#1.offset| (* (+ .cse9 v_z_18 (- 4294967296)) .cse8)) .cse11))) (+ (select .cse43 .cse3) (select .cse43 .cse4) |c_ULTIMATE.start_main_~sum~0#1| (select .cse43 .cse5) (select .cse43 |c_ULTIMATE.start_main_~#array~0#1.offset|)))) (< c_~ARR_SIZE~0 (+ .cse47 .cse48 1)) (= .cse49 0) (= .cse49 1) (< .cse50 0))))))) (< 2147483647 .cse52) (< v_z_18 0)))) (forall ((v_z_18 Int)) (let ((.cse61 (+ .cse9 v_z_18))) (or (forall ((v_y_18 Int)) (let ((.cse54 (* v_y_18 4294967296)) (.cse55 (* v_z_18 4294967295))) (let ((.cse60 (* 17179869180 v_z_18)) (.cse62 (* 17179869184 v_y_18)) (.cse57 (+ .cse54 .cse55))) (let ((.cse59 (store .cse14 (+ .cse60 .cse62 |c_ULTIMATE.start_main_~#array~0#1.offset| (* .cse57 .cse8)) |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse53 (let ((.cse63 (store .cse59 (+ .cse60 .cse62 |c_ULTIMATE.start_main_~#array~0#1.offset| (* (+ .cse9 v_z_18 (- 4294967296)) .cse8)) .cse11))) (+ (select .cse63 .cse3) (select .cse63 .cse4) |c_ULTIMATE.start_main_~sum~0#1| (select .cse63 .cse5) (select .cse63 |c_ULTIMATE.start_main_~#array~0#1.offset|)))) (.cse56 (let ((.cse58 (store .cse59 (+ .cse60 (* .cse61 .cse8) .cse62 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse11))) (+ (select .cse58 .cse4) |c_ULTIMATE.start_main_~sum~0#1| (select .cse58 .cse5) (select .cse58 |c_ULTIMATE.start_main_~#array~0#1.offset|) (select .cse58 .cse3))))) (or (= 1 .cse53) (< c_~ARR_SIZE~0 (+ .cse54 .cse55 1)) (= .cse56 0) (= 0 .cse53) (= .cse56 1) (< .cse57 0))))))) (< 2147483647 .cse61) (< v_z_18 0)))) (forall ((v_z_22 Int)) (or (< 4294967295 v_z_22) (forall ((v_y_22 Int)) (let ((.cse64 (* v_y_22 4294967296)) (.cse65 (* v_z_22 4294967295))) (let ((.cse67 (+ .cse64 .cse65))) (let ((.cse66 (let ((.cse68 (let ((.cse69 (* 17179869184 v_y_22)) (.cse70 (* 17179869180 v_z_22))) (store (store .cse14 (+ (* .cse67 .cse8) .cse69 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse70) |c_ULTIMATE.start_main_~num~0#1|) (+ .cse69 (* .cse8 (+ .cse9 (- 8589934592) v_z_22)) |c_ULTIMATE.start_main_~#array~0#1.offset| .cse70) .cse11)))) (+ (select .cse68 .cse3) (select .cse68 |c_ULTIMATE.start_main_~#array~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse68 .cse4) (select .cse68 .cse5))))) (or (< c_~ARR_SIZE~0 (+ .cse64 .cse65 1)) (= .cse66 1) (< .cse67 0) (= .cse66 0)))))) (< (+ .cse9 v_z_22) 6442450944))) (forall ((v_z_22 Int)) (let ((.cse78 (+ .cse9 v_z_22))) (or (forall ((v_y_22 Int)) (let ((.cse71 (* v_y_22 4294967296)) (.cse72 (* v_z_22 4294967295))) (let ((.cse74 (+ .cse71 .cse72))) (let ((.cse73 (let ((.cse75 (let ((.cse76 (* 17179869184 v_y_22)) (.cse77 (* 17179869180 v_z_22))) (store (store .cse14 (+ (* .cse74 .cse8) .cse76 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse77) |c_ULTIMATE.start_main_~num~0#1|) (+ (* (+ .cse9 v_z_22 (- 4294967296)) .cse8) .cse76 |c_ULTIMATE.start_main_~#array~0#1.offset| .cse77) .cse11)))) (+ (select .cse75 .cse4) (select .cse75 |c_ULTIMATE.start_main_~#array~0#1.offset|) |c_ULTIMATE.start_main_~sum~0#1| (select .cse75 .cse3) (select .cse75 .cse5))))) (or (< c_~ARR_SIZE~0 (+ .cse71 .cse72 1)) (= 0 .cse73) (< .cse74 0) (= 1 .cse73)))))) (< .cse78 2147483648) (< v_z_22 0) (< 4294967295 .cse78)))) (forall ((v_z_18 Int)) (let ((.cse86 (+ .cse9 v_z_18))) (or (forall ((v_y_18 Int)) (let ((.cse80 (* v_y_18 4294967296)) (.cse81 (* v_z_18 4294967295))) (let ((.cse82 (+ .cse80 .cse81))) (let ((.cse79 (let ((.cse83 (let ((.cse84 (* 17179869180 v_z_18)) (.cse85 (* 17179869184 v_y_18))) (store (store .cse14 (+ .cse84 .cse85 |c_ULTIMATE.start_main_~#array~0#1.offset| (* .cse82 .cse8)) |c_ULTIMATE.start_main_~num~0#1|) (+ .cse84 .cse85 |c_ULTIMATE.start_main_~#array~0#1.offset| (* (+ .cse9 v_z_18 (- 4294967296)) .cse8)) .cse11)))) (+ (select .cse83 .cse3) (select .cse83 .cse4) |c_ULTIMATE.start_main_~sum~0#1| (select .cse83 .cse5) (select .cse83 |c_ULTIMATE.start_main_~#array~0#1.offset|))))) (or (= 1 .cse79) (< c_~ARR_SIZE~0 (+ .cse80 .cse81 1)) (= 0 .cse79) (< .cse82 0)))))) (< .cse86 4294967296) (< 4294967295 v_z_18) (< 6442450943 .cse86)))) (forall ((v_z_18 Int)) (let ((.cse87 (+ .cse9 v_z_18))) (or (< .cse87 4294967296) (forall ((v_y_18 Int)) (let ((.cse89 (* v_y_18 4294967296)) (.cse90 (* v_z_18 4294967295))) (let ((.cse93 (* 17179869180 v_z_18)) (.cse94 (* 17179869184 v_y_18)) (.cse95 (+ .cse89 .cse90))) (let ((.cse92 (store .cse14 (+ .cse93 .cse94 |c_ULTIMATE.start_main_~#array~0#1.offset| (* .cse95 .cse8)) |c_ULTIMATE.start_main_~num~0#1|))) (let ((.cse88 (let ((.cse96 (store .cse92 (+ .cse93 .cse94 |c_ULTIMATE.start_main_~#array~0#1.offset| (* (+ .cse9 v_z_18 (- 4294967296)) .cse8)) .cse11))) (+ (select .cse96 .cse3) (select .cse96 .cse4) |c_ULTIMATE.start_main_~sum~0#1| (select .cse96 .cse5) (select .cse96 |c_ULTIMATE.start_main_~#array~0#1.offset|))))) (or (= 1 .cse88) (< c_~ARR_SIZE~0 (+ .cse89 .cse90 1)) (= 0 .cse88) (= (let ((.cse91 (store .cse92 (+ .cse93 (* .cse87 .cse8) .cse94 |c_ULTIMATE.start_main_~#array~0#1.offset|) .cse11))) (+ (select .cse91 .cse4) |c_ULTIMATE.start_main_~sum~0#1| (select .cse91 .cse5) (select .cse91 |c_ULTIMATE.start_main_~#array~0#1.offset|) (select .cse91 .cse3))) 1) (< .cse95 0))))))) (< 4294967295 v_z_18) (< 6442450943 .cse87))))))) is different from true [2024-11-13 14:19:20,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:19:20,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808400771] [2024-11-13 14:19:20,744 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-13 14:19:20,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [602101684] [2024-11-13 14:19:20,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [602101684] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:19:20,744 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-11-13 14:19:20,744 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2024-11-13 14:19:20,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823353089] [2024-11-13 14:19:20,744 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-11-13 14:19:20,745 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-13 14:19:20,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:19:20,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-13 14:19:20,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=167, Invalid=1558, Unknown=1, NotChecked=80, Total=1806 [2024-11-13 14:19:20,747 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand has 28 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 27 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:19:22,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-13 14:19:22,540 INFO L93 Difference]: Finished difference Result 112 states and 138 transitions. [2024-11-13 14:19:22,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2024-11-13 14:19:22,541 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 27 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) Word has length 50 [2024-11-13 14:19:22,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-13 14:19:22,543 INFO L225 Difference]: With dead ends: 112 [2024-11-13 14:19:22,543 INFO L226 Difference]: Without dead ends: 108 [2024-11-13 14:19:22,544 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 557 ImplicationChecksByTransitivity, 25.9s TimeCoverageRelationStatistics Valid=187, Invalid=1708, Unknown=1, NotChecked=84, Total=1980 [2024-11-13 14:19:22,545 INFO L432 NwaCegarLoop]: 26 mSDtfsCounter, 35 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 796 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2024-11-13 14:19:22,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 237 Invalid, 801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 796 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2024-11-13 14:19:22,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2024-11-13 14:19:22,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 96. [2024-11-13 14:19:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 87 states have (on average 1.2413793103448276) internal successors, (108), 87 states have internal predecessors, (108), 5 states have call successors, (5), 3 states have call predecessors, (5), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2024-11-13 14:19:22,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 118 transitions. [2024-11-13 14:19:22,576 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 118 transitions. Word has length 50 [2024-11-13 14:19:22,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-13 14:19:22,577 INFO L471 AbstractCegarLoop]: Abstraction has 96 states and 118 transitions. [2024-11-13 14:19:22,577 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 27 states have internal predecessors, (44), 3 states have call successors, (3), 2 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-13 14:19:22,577 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 118 transitions. [2024-11-13 14:19:22,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-13 14:19:22,584 INFO L207 NwaCegarLoop]: Found error trace [2024-11-13 14:19:22,584 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2024-11-13 14:19:22,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-13 14:19:22,785 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:22,785 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-13 14:19:22,785 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:19:22,785 INFO L85 PathProgramCache]: Analyzing trace with hash 1915111921, now seen corresponding path program 2 times [2024-11-13 14:19:22,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:19:22,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407709007] [2024-11-13 14:19:22,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:19:22,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:19:22,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-13 14:19:22,835 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1814184768] [2024-11-13 14:19:22,835 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-13 14:19:22,835 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:19:22,835 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:19:22,838 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:19:22,841 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_da62bd81-ed23-46cc-8a92-46de818ae79b/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-13 14:19:23,782 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-13 14:19:23,782 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-13 14:19:23,785 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 81 conjuncts are in the unsatisfiable core [2024-11-13 14:19:23,791 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:19:23,844 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 [2024-11-13 14:19:23,892 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 18 [2024-11-13 14:19:24,066 INFO L349 Elim1Store]: treesize reduction 32, result has 31.9 percent of original size [2024-11-13 14:19:24,067 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-13 14:19:24,155 INFO L349 Elim1Store]: treesize reduction 52, result has 22.4 percent of original size [2024-11-13 14:19:24,155 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 39 treesize of output 44 [2024-11-13 14:19:24,765 INFO L349 Elim1Store]: treesize reduction 190, result has 15.6 percent of original size [2024-11-13 14:19:24,766 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 1 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 14 case distinctions, treesize of input 66 treesize of output 62 [2024-11-13 14:19:24,955 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 187 treesize of output 163 [2024-11-13 14:19:25,631 INFO L349 Elim1Store]: treesize reduction 463, result has 33.0 percent of original size [2024-11-13 14:19:25,632 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 8 new quantified variables, introduced 24 case distinctions, treesize of input 163 treesize of output 421 [2024-11-13 14:19:27,356 INFO L349 Elim1Store]: treesize reduction 582, result has 17.6 percent of original size [2024-11-13 14:19:27,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 2 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 505 treesize of output 696 [2024-11-13 14:19:27,813 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-13 14:19:27,828 INFO L349 Elim1Store]: treesize reduction 70, result has 1.4 percent of original size [2024-11-13 14:19:27,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 388 treesize of output 62 [2024-11-13 14:20:10,637 WARN L286 SmtUtils]: Spent 33.85s on a formula simplification. DAG size of input: 427 DAG size of output: 191 (called from [L 346] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.arrays.Elim1Store.elim1) [2024-11-13 14:20:10,638 INFO L349 Elim1Store]: treesize reduction 3887, result has 21.3 percent of original size [2024-11-13 14:20:10,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 4 stores, 9 select indices, 9 select index equivalence classes, 0 disjoint index pairs (out of 36 index pairs), introduced 13 new quantified variables, introduced 72 case distinctions, treesize of input 637 treesize of output 2238