./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/list-ext2-properties/simple_search_value-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/list-ext2-properties/simple_search_value-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 9339a3186df1139a7984a9803a310ef99d020bdafafac2d122ebd6ff2b132483 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:25:26,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:25:26,481 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:25:26,487 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:25:26,488 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:25:26,516 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:25:26,516 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:25:26,517 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:25:26,517 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:25:26,517 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:25:26,518 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:25:26,518 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:25:26,518 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:25:26,518 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:25:26,518 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:25:26,519 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:25:26,519 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:25:26,519 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:25:26,519 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:25:26,519 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:25:26,520 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:25:26,520 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:25:26,520 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:25:26,520 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:25:26,520 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:25:26,520 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:25:26,521 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:25:26,521 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:25:26,521 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:25:26,521 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:25:26,521 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:25:26,522 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:25:26,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:25:26,522 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:25:26,522 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:25:26,522 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:25:26,523 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:25:26,523 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:25:26,523 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:25:26,523 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:25:26,523 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:25:26,523 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:25:26,524 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:25:26,524 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:25:26,524 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:25:26,524 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:25:26,524 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:25:26,524 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:25:26,524 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_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9339a3186df1139a7984a9803a310ef99d020bdafafac2d122ebd6ff2b132483 [2024-11-27 20:25:26,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:25:26,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:25:26,927 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:25:26,931 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:25:26,931 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:25:26,934 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/list-ext2-properties/simple_search_value-1.i [2024-11-27 20:25:30,113 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/data/2007bd143/9133b84b9e5142628bff1abb0a9bf72a/FLAG1f5918379 [2024-11-27 20:25:30,531 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:25:30,531 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/sv-benchmarks/c/list-ext2-properties/simple_search_value-1.i [2024-11-27 20:25:30,551 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/data/2007bd143/9133b84b9e5142628bff1abb0a9bf72a/FLAG1f5918379 [2024-11-27 20:25:30,716 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/data/2007bd143/9133b84b9e5142628bff1abb0a9bf72a [2024-11-27 20:25:30,718 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:25:30,723 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:25:30,724 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:25:30,724 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:25:30,731 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:25:30,732 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:25:30" (1/1) ... [2024-11-27 20:25:30,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a0817e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:30, skipping insertion in model container [2024-11-27 20:25:30,734 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:25:30" (1/1) ... [2024-11-27 20:25:30,785 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:25:31,172 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_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/sv-benchmarks/c/list-ext2-properties/simple_search_value-1.i[23210,23223] [2024-11-27 20:25:31,177 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:25:31,193 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:25:31,270 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_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/sv-benchmarks/c/list-ext2-properties/simple_search_value-1.i[23210,23223] [2024-11-27 20:25:31,272 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:25:31,314 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:25:31,315 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:31 WrapperNode [2024-11-27 20:25:31,317 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:25:31,318 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:25:31,318 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:25:31,318 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:25:31,328 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:31" (1/1) ... [2024-11-27 20:25:31,341 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:31" (1/1) ... [2024-11-27 20:25:31,364 INFO L138 Inliner]: procedures = 122, calls = 18, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 68 [2024-11-27 20:25:31,367 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:25:31,367 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:25:31,367 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:25:31,368 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:25:31,380 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:31" (1/1) ... [2024-11-27 20:25:31,380 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:31" (1/1) ... [2024-11-27 20:25:31,383 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:31" (1/1) ... [2024-11-27 20:25:31,403 INFO L175 MemorySlicer]: Split 10 memory accesses to 2 slices as follows [2, 8]. 80 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 4 writes are split as follows [0, 4]. [2024-11-27 20:25:31,403 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:31" (1/1) ... [2024-11-27 20:25:31,403 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:31" (1/1) ... [2024-11-27 20:25:31,410 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:31" (1/1) ... [2024-11-27 20:25:31,411 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:31" (1/1) ... [2024-11-27 20:25:31,415 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:31" (1/1) ... [2024-11-27 20:25:31,417 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:31" (1/1) ... [2024-11-27 20:25:31,418 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:31" (1/1) ... [2024-11-27 20:25:31,420 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:25:31,421 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:25:31,421 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:25:31,421 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:25:31,423 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:31" (1/1) ... [2024-11-27 20:25:31,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:25:31,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:31,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:25:31,464 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:25:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-27 20:25:31,490 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-27 20:25:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-27 20:25:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-27 20:25:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-27 20:25:31,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-27 20:25:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-27 20:25:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:25:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-27 20:25:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-27 20:25:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-27 20:25:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-27 20:25:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:25:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-27 20:25:31,491 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:25:31,491 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:25:31,612 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:25:31,615 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:25:31,668 INFO L727 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-27 20:25:31,879 INFO L? ?]: Removed 15 outVars from TransFormulas that were not future-live. [2024-11-27 20:25:31,879 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:25:31,890 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:25:31,891 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-27 20:25:31,891 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:25:31 BoogieIcfgContainer [2024-11-27 20:25:31,891 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:25:31,894 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:25:31,894 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:25:31,899 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:25:31,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:25:30" (1/3) ... [2024-11-27 20:25:31,900 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea411e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:25:31, skipping insertion in model container [2024-11-27 20:25:31,900 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:25:31" (2/3) ... [2024-11-27 20:25:31,901 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ea411e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:25:31, skipping insertion in model container [2024-11-27 20:25:31,901 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:25:31" (3/3) ... [2024-11-27 20:25:31,902 INFO L128 eAbstractionObserver]: Analyzing ICFG simple_search_value-1.i [2024-11-27 20:25:31,919 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:25:31,920 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG simple_search_value-1.i that has 2 procedures, 29 locations, 1 initial locations, 2 loop locations, and 1 error locations. [2024-11-27 20:25:31,987 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:25:32,001 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;@650f8538, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:25:32,002 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 20:25:32,007 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-27 20:25:32,013 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:32,013 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:32,014 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:32,019 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:32,020 INFO L85 PathProgramCache]: Analyzing trace with hash 2088120783, now seen corresponding path program 1 times [2024-11-27 20:25:32,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:32,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426151851] [2024-11-27 20:25:32,028 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:32,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:32,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:32,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:32,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:32,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426151851] [2024-11-27 20:25:32,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426151851] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:32,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:32,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:25:32,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978062417] [2024-11-27 20:25:32,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:32,198 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-27 20:25:32,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:32,222 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-27 20:25:32,223 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:25:32,225 INFO L87 Difference]: Start difference. First operand has 28 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 26 states have internal predecessors, (35), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:32,242 INFO L93 Difference]: Finished difference Result 42 states and 55 transitions. [2024-11-27 20:25:32,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-27 20:25:32,244 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-27 20:25:32,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:32,249 INFO L225 Difference]: With dead ends: 42 [2024-11-27 20:25:32,249 INFO L226 Difference]: Without dead ends: 20 [2024-11-27 20:25:32,252 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-27 20:25:32,255 INFO L435 NwaCegarLoop]: 34 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, 34 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 [2024-11-27 20:25:32,256 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:25:32,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2024-11-27 20:25:32,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2024-11-27 20:25:32,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 19 states have (on average 1.263157894736842) internal successors, (24), 19 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 24 transitions. [2024-11-27 20:25:32,291 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 24 transitions. Word has length 9 [2024-11-27 20:25:32,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:32,293 INFO L471 AbstractCegarLoop]: Abstraction has 20 states and 24 transitions. [2024-11-27 20:25:32,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,293 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 24 transitions. [2024-11-27 20:25:32,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 20:25:32,294 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:32,294 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:32,294 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:25:32,295 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:32,295 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:32,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1345523840, now seen corresponding path program 1 times [2024-11-27 20:25:32,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:32,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034019997] [2024-11-27 20:25:32,298 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:32,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:32,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:32,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:32,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:32,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034019997] [2024-11-27 20:25:32,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034019997] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:32,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:32,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 20:25:32,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179181806] [2024-11-27 20:25:32,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:32,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:25:32,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:32,422 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:25:32,422 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:25:32,423 INFO L87 Difference]: Start difference. First operand 20 states and 24 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:32,443 INFO L93 Difference]: Finished difference Result 31 states and 38 transitions. [2024-11-27 20:25:32,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:25:32,444 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-27 20:25:32,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:32,444 INFO L225 Difference]: With dead ends: 31 [2024-11-27 20:25:32,445 INFO L226 Difference]: Without dead ends: 21 [2024-11-27 20:25:32,445 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:25:32,446 INFO L435 NwaCegarLoop]: 23 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 41 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:32,446 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 41 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:25:32,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-27 20:25:32,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-27 20:25:32,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 20 states have (on average 1.25) internal successors, (25), 20 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2024-11-27 20:25:32,451 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 11 [2024-11-27 20:25:32,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:32,451 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2024-11-27 20:25:32,452 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,452 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2024-11-27 20:25:32,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-27 20:25:32,452 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:32,453 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:32,453 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:25:32,453 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:32,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:32,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1402782142, now seen corresponding path program 1 times [2024-11-27 20:25:32,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:32,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786342925] [2024-11-27 20:25:32,454 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:32,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:32,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:25:32,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:32,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786342925] [2024-11-27 20:25:32,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786342925] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:32,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:32,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:25:32,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711540098] [2024-11-27 20:25:32,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:32,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:25:32,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:32,627 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:25:32,627 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:25:32,628 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:32,701 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2024-11-27 20:25:32,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:32,703 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-27 20:25:32,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:32,703 INFO L225 Difference]: With dead ends: 44 [2024-11-27 20:25:32,703 INFO L226 Difference]: Without dead ends: 27 [2024-11-27 20:25:32,704 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:32,705 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:32,705 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 52 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:25:32,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-11-27 20:25:32,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2024-11-27 20:25:32,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 22 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2024-11-27 20:25:32,717 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 11 [2024-11-27 20:25:32,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:32,717 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2024-11-27 20:25:32,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,718 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2024-11-27 20:25:32,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-27 20:25:32,718 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:32,718 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:32,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:25:32,719 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:32,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash -749690571, now seen corresponding path program 1 times [2024-11-27 20:25:32,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:32,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805901939] [2024-11-27 20:25:32,723 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:32,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:32,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:32,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-27 20:25:32,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:32,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805901939] [2024-11-27 20:25:32,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805901939] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:32,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:32,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:25:32,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612768959] [2024-11-27 20:25:32,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:32,868 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:25:32,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:32,869 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:25:32,869 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:25:32,869 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:32,943 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2024-11-27 20:25:32,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:32,944 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-11-27 20:25:32,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:32,945 INFO L225 Difference]: With dead ends: 36 [2024-11-27 20:25:32,945 INFO L226 Difference]: Without dead ends: 33 [2024-11-27 20:25:32,945 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:32,946 INFO L435 NwaCegarLoop]: 15 mSDtfsCounter, 12 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:32,946 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 36 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:25:32,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2024-11-27 20:25:32,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 24. [2024-11-27 20:25:32,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2024-11-27 20:25:32,954 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 17 [2024-11-27 20:25:32,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:32,955 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2024-11-27 20:25:32,955 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:32,955 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2024-11-27 20:25:32,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-27 20:25:32,956 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:32,956 INFO L218 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:32,956 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:25:32,956 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:32,956 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:32,957 INFO L85 PathProgramCache]: Analyzing trace with hash 247763977, now seen corresponding path program 1 times [2024-11-27 20:25:32,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:32,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330986753] [2024-11-27 20:25:32,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:32,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:33,163 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:25:33,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:33,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330986753] [2024-11-27 20:25:33,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330986753] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:33,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2090596110] [2024-11-27 20:25:33,164 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:33,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:33,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:33,169 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:33,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:25:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:33,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 141 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-27 20:25:33,337 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:33,400 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:25:33,401 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:33,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:25:33,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2090596110] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:33,469 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:33,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-27 20:25:33,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425302637] [2024-11-27 20:25:33,469 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:33,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-27 20:25:33,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:33,470 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-27 20:25:33,473 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:25:33,474 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:33,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:33,602 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2024-11-27 20:25:33,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-27 20:25:33,603 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 23 [2024-11-27 20:25:33,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:33,604 INFO L225 Difference]: With dead ends: 64 [2024-11-27 20:25:33,604 INFO L226 Difference]: Without dead ends: 46 [2024-11-27 20:25:33,605 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-11-27 20:25:33,607 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 14 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:33,608 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 70 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:25:33,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-11-27 20:25:33,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 42. [2024-11-27 20:25:33,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 41 states have (on average 1.1219512195121952) internal successors, (46), 41 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:33,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2024-11-27 20:25:33,621 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 23 [2024-11-27 20:25:33,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:33,623 INFO L471 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2024-11-27 20:25:33,623 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:33,623 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2024-11-27 20:25:33,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-27 20:25:33,624 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:33,624 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:33,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 20:25:33,825 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:33,825 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:33,826 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:33,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1777192146, now seen corresponding path program 2 times [2024-11-27 20:25:33,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:33,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237657576] [2024-11-27 20:25:33,827 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:25:33,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:33,910 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:25:33,911 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:34,060 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2024-11-27 20:25:34,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:34,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237657576] [2024-11-27 20:25:34,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237657576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:25:34,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:25:34,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:25:34,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763934025] [2024-11-27 20:25:34,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:25:34,062 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:25:34,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:34,062 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:25:34,062 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:25:34,063 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 5 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:34,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:34,128 INFO L93 Difference]: Finished difference Result 54 states and 61 transitions. [2024-11-27 20:25:34,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:25:34,128 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-27 20:25:34,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:34,129 INFO L225 Difference]: With dead ends: 54 [2024-11-27 20:25:34,130 INFO L226 Difference]: Without dead ends: 45 [2024-11-27 20:25:34,130 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:25:34,131 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 59 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:34,131 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 59 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 20:25:34,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-27 20:25:34,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2024-11-27 20:25:34,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 43 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:34,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2024-11-27 20:25:34,138 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 41 [2024-11-27 20:25:34,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:34,138 INFO L471 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2024-11-27 20:25:34,138 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:34,138 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2024-11-27 20:25:34,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-27 20:25:34,139 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:34,139 INFO L218 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:34,139 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:25:34,139 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:34,140 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:34,140 INFO L85 PathProgramCache]: Analyzing trace with hash -1775345104, now seen corresponding path program 1 times [2024-11-27 20:25:34,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:34,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576548606] [2024-11-27 20:25:34,140 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:34,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:34,471 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:25:34,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:34,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576548606] [2024-11-27 20:25:34,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576548606] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:34,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256241450] [2024-11-27 20:25:34,473 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:25:34,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:34,473 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:34,475 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:34,481 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:25:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:25:34,680 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-27 20:25:34,683 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:34,795 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:25:34,795 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:25:34,974 INFO L134 CoverageAnalysis]: Checked inductivity of 49 backedges. 4 proven. 44 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:25:34,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256241450] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 20:25:34,976 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 20:25:34,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2024-11-27 20:25:34,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147883367] [2024-11-27 20:25:34,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 20:25:34,977 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-27 20:25:34,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:25:34,978 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-27 20:25:34,980 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2024-11-27 20:25:34,981 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:35,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 20:25:35,296 INFO L93 Difference]: Finished difference Result 104 states and 118 transitions. [2024-11-27 20:25:35,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-27 20:25:35,297 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 41 [2024-11-27 20:25:35,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 20:25:35,298 INFO L225 Difference]: With dead ends: 104 [2024-11-27 20:25:35,298 INFO L226 Difference]: Without dead ends: 84 [2024-11-27 20:25:35,299 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 76 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=211, Invalid=341, Unknown=0, NotChecked=0, Total=552 [2024-11-27 20:25:35,300 INFO L435 NwaCegarLoop]: 19 mSDtfsCounter, 20 mSDsluCounter, 42 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 20:25:35,300 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 61 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 20:25:35,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-11-27 20:25:35,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2024-11-27 20:25:35,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.0632911392405062) internal successors, (84), 79 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:35,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 84 transitions. [2024-11-27 20:25:35,321 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 84 transitions. Word has length 41 [2024-11-27 20:25:35,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 20:25:35,321 INFO L471 AbstractCegarLoop]: Abstraction has 80 states and 84 transitions. [2024-11-27 20:25:35,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.285714285714286) internal successors, (74), 14 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:25:35,322 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 84 transitions. [2024-11-27 20:25:35,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2024-11-27 20:25:35,323 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 20:25:35,323 INFO L218 NwaCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 20:25:35,335 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:25:35,527 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 20:25:35,527 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 20:25:35,528 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:25:35,528 INFO L85 PathProgramCache]: Analyzing trace with hash 150868666, now seen corresponding path program 2 times [2024-11-27 20:25:35,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:25:35,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310677866] [2024-11-27 20:25:35,528 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:25:35,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:25:35,710 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:25:35,711 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:41,204 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 1 proven. 100 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2024-11-27 20:25:41,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:25:41,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310677866] [2024-11-27 20:25:41,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310677866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:25:41,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [784301104] [2024-11-27 20:25:41,207 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:25:41,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:25:41,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:25:41,211 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:25:41,215 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ececdbfd-84f3-4769-a1de-1bbce7aa8a91/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 20:25:41,547 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:25:41,547 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:25:41,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 166 conjuncts are in the unsatisfiable core [2024-11-27 20:25:41,567 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:25:41,598 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-27 20:25:41,783 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-27 20:25:41,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-27 20:25:41,899 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-27 20:25:42,093 INFO L349 Elim1Store]: treesize reduction 48, result has 36.0 percent of original size [2024-11-27 20:25:42,093 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 41 [2024-11-27 20:25:42,121 INFO L349 Elim1Store]: treesize reduction 17, result has 22.7 percent of original size [2024-11-27 20:25:42,121 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 1 case distinctions, treesize of input 49 treesize of output 36 [2024-11-27 20:25:42,295 INFO L349 Elim1Store]: treesize reduction 31, result has 18.4 percent of original size [2024-11-27 20:25:42,295 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 2 new quantified variables, introduced 1 case distinctions, treesize of input 117 treesize of output 79 [2024-11-27 20:25:42,608 INFO L349 Elim1Store]: treesize reduction 40, result has 21.6 percent of original size [2024-11-27 20:25:42,609 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 94 treesize of output 69 [2024-11-27 20:25:42,649 INFO L349 Elim1Store]: treesize reduction 12, result has 69.2 percent of original size [2024-11-27 20:25:42,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 35 treesize of output 39 [2024-11-27 20:25:42,830 INFO L349 Elim1Store]: treesize reduction 74, result has 18.7 percent of original size [2024-11-27 20:25:42,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 191 treesize of output 93 [2024-11-27 20:25:43,162 INFO L349 Elim1Store]: treesize reduction 72, result has 18.2 percent of original size [2024-11-27 20:25:43,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 150 treesize of output 95 [2024-11-27 20:25:43,402 INFO L349 Elim1Store]: treesize reduction 84, result has 16.0 percent of original size [2024-11-27 20:25:43,402 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 6 new quantified variables, introduced 6 case distinctions, treesize of input 163 treesize of output 106 [2024-11-27 20:25:43,708 INFO L349 Elim1Store]: treesize reduction 60, result has 31.8 percent of original size [2024-11-27 20:25:43,708 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 6 case distinctions, treesize of input 131 treesize of output 100 [2024-11-27 20:25:43,727 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 19 [2024-11-27 20:25:43,802 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-11-27 20:25:43,809 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 67 treesize of output 43 [2024-11-27 20:25:43,946 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 191 treesize of output 157 [2024-11-27 20:25:44,017 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-27 20:25:44,914 INFO L349 Elim1Store]: treesize reduction 72, result has 70.9 percent of original size [2024-11-27 20:25:44,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 9 new quantified variables, introduced 21 case distinctions, treesize of input 321 treesize of output 382 [2024-11-27 20:25:44,958 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 23 treesize of output 11 [2024-11-27 20:32:34,229 WARN L286 SmtUtils]: Spent 1.57m on a formula simplification. DAG size of input: 6518 DAG size of output: 6627 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:33:33,210 WARN L286 SmtUtils]: Spent 34.24s on a formula simplification. DAG size of input: 5979 DAG size of output: 5967 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:34:35,008 WARN L286 SmtUtils]: Spent 1.03m on a formula simplification. DAG size of input: 5970 DAG size of output: 5971 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:36:26,641 WARN L286 SmtUtils]: Spent 1.50m on a formula simplification. DAG size of input: 5969 DAG size of output: 6229 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:38:40,133 WARN L286 SmtUtils]: Spent 1.88m on a formula simplification. DAG size of input: 5968 DAG size of output: 6293 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-27 20:39:55,618 WARN L286 SmtUtils]: Spent 27.00s on a formula simplification that was a NOOP. DAG size: 6244 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)