./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array11_pattern.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/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_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array11_pattern.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/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_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/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 c3ac08a3f6fb5579b9b2ae158efc8988dd3312e617d74223198803ffe0b335cb --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 03:18:19,444 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 03:18:19,523 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 03:18:19,530 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 03:18:19,531 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 03:18:19,565 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 03:18:19,565 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 03:18:19,566 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 03:18:19,566 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 03:18:19,566 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 03:18:19,567 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 03:18:19,567 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 03:18:19,567 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 03:18:19,568 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 03:18:19,568 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 03:18:19,568 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 03:18:19,568 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 03:18:19,568 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 03:18:19,569 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 03:18:19,569 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 03:18:19,569 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 03:18:19,569 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 03:18:19,569 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 03:18:19,570 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 03:18:19,570 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 03:18:19,570 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 03:18:19,570 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 03:18:19,570 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 03:18:19,571 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 03:18:19,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:18:19,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:18:19,571 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:18:19,571 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:18:19,571 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 03:18:19,571 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 03:18:19,571 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 03:18:19,572 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 03:18:19,572 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:18:19,572 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 03:18:19,572 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 03:18:19,572 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 03:18:19,572 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 03:18:19,573 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 03:18:19,573 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 03:18:19,573 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 03:18:19,573 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 03:18:19,573 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 03:18:19,573 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 03:18:19,574 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_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/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 -> c3ac08a3f6fb5579b9b2ae158efc8988dd3312e617d74223198803ffe0b335cb [2024-11-28 03:18:19,946 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 03:18:19,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 03:18:19,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 03:18:19,973 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 03:18:19,973 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 03:18:19,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-patterns/array11_pattern.c [2024-11-28 03:18:23,929 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/bin/uautomizer-verify-aQ6SnzHsRB/data/3abb5586e/d0f00bc1b7324d08ae6005f4f30bc7c4/FLAGc7f1221ef [2024-11-28 03:18:24,362 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 03:18:24,363 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/sv-benchmarks/c/array-patterns/array11_pattern.c [2024-11-28 03:18:24,375 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/bin/uautomizer-verify-aQ6SnzHsRB/data/3abb5586e/d0f00bc1b7324d08ae6005f4f30bc7c4/FLAGc7f1221ef [2024-11-28 03:18:24,540 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/bin/uautomizer-verify-aQ6SnzHsRB/data/3abb5586e/d0f00bc1b7324d08ae6005f4f30bc7c4 [2024-11-28 03:18:24,543 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 03:18:24,545 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 03:18:24,547 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 03:18:24,547 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 03:18:24,556 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 03:18:24,557 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:24" (1/1) ... [2024-11-28 03:18:24,558 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55bb1f3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24, skipping insertion in model container [2024-11-28 03:18:24,559 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:18:24" (1/1) ... [2024-11-28 03:18:24,588 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 03:18:24,823 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_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/sv-benchmarks/c/array-patterns/array11_pattern.c[1357,1370] [2024-11-28 03:18:24,865 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:18:24,886 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 03:18:24,902 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_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/sv-benchmarks/c/array-patterns/array11_pattern.c[1357,1370] [2024-11-28 03:18:24,915 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 03:18:24,935 INFO L204 MainTranslator]: Completed translation [2024-11-28 03:18:24,936 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24 WrapperNode [2024-11-28 03:18:24,937 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 03:18:24,938 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 03:18:24,938 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 03:18:24,939 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 03:18:24,954 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24" (1/1) ... [2024-11-28 03:18:24,962 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24" (1/1) ... [2024-11-28 03:18:24,984 INFO L138 Inliner]: procedures = 16, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 75 [2024-11-28 03:18:24,985 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 03:18:24,986 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 03:18:24,986 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 03:18:24,986 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 03:18:24,997 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24" (1/1) ... [2024-11-28 03:18:24,997 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24" (1/1) ... [2024-11-28 03:18:25,000 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24" (1/1) ... [2024-11-28 03:18:25,015 INFO L175 MemorySlicer]: Split 8 memory accesses to 3 slices as follows [2, 3, 3]. 38 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 4 writes are split as follows [0, 2, 2]. [2024-11-28 03:18:25,015 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24" (1/1) ... [2024-11-28 03:18:25,015 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24" (1/1) ... [2024-11-28 03:18:25,023 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24" (1/1) ... [2024-11-28 03:18:25,024 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24" (1/1) ... [2024-11-28 03:18:25,033 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24" (1/1) ... [2024-11-28 03:18:25,035 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24" (1/1) ... [2024-11-28 03:18:25,036 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24" (1/1) ... [2024-11-28 03:18:25,041 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 03:18:25,042 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 03:18:25,042 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 03:18:25,043 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 03:18:25,044 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24" (1/1) ... [2024-11-28 03:18:25,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 03:18:25,076 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:25,095 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 03:18:25,102 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 03:18:25,142 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 03:18:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-28 03:18:25,143 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-28 03:18:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 03:18:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 03:18:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-28 03:18:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 03:18:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 03:18:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 03:18:25,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-28 03:18:25,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 03:18:25,144 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 03:18:25,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 03:18:25,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 03:18:25,144 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-28 03:18:25,144 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 03:18:25,262 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 03:18:25,265 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 03:18:25,577 INFO L? ?]: Removed 12 outVars from TransFormulas that were not future-live. [2024-11-28 03:18:25,579 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 03:18:25,594 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 03:18:25,596 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 03:18:25,598 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:25 BoogieIcfgContainer [2024-11-28 03:18:25,598 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 03:18:25,605 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 03:18:25,605 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 03:18:25,613 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 03:18:25,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:18:24" (1/3) ... [2024-11-28 03:18:25,614 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d683d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:25, skipping insertion in model container [2024-11-28 03:18:25,614 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:18:24" (2/3) ... [2024-11-28 03:18:25,616 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@79d683d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:18:25, skipping insertion in model container [2024-11-28 03:18:25,616 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:18:25" (3/3) ... [2024-11-28 03:18:25,618 INFO L128 eAbstractionObserver]: Analyzing ICFG array11_pattern.c [2024-11-28 03:18:25,641 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 03:18:25,643 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG array11_pattern.c that has 2 procedures, 25 locations, 1 initial locations, 3 loop locations, and 1 error locations. [2024-11-28 03:18:25,738 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 03:18:25,754 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;@58bea926, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 03:18:25,755 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 03:18:25,761 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:18:25,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2024-11-28 03:18:25,769 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:25,770 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:25,771 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:18:25,777 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:25,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1763733444, now seen corresponding path program 1 times [2024-11-28 03:18:25,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:25,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837772431] [2024-11-28 03:18:25,788 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:25,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:26,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:26,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:26,011 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837772431] [2024-11-28 03:18:26,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837772431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:26,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:26,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 03:18:26,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [444254398] [2024-11-28 03:18:26,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:26,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 03:18:26,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:26,043 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 03:18:26,044 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 03:18:26,047 INFO L87 Difference]: Start difference. First operand has 25 states, 20 states have (on average 1.5) internal successors, (30), 21 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:18:26,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:26,068 INFO L93 Difference]: Finished difference Result 47 states and 66 transitions. [2024-11-28 03:18:26,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 03:18:26,070 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2024-11-28 03:18:26,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:26,077 INFO L225 Difference]: With dead ends: 47 [2024-11-28 03:18:26,077 INFO L226 Difference]: Without dead ends: 21 [2024-11-28 03:18:26,081 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 [2024-11-28 03:18:26,085 INFO L435 NwaCegarLoop]: 28 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, 28 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:26,087 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 03:18:26,106 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-28 03:18:26,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-28 03:18:26,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 17 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:18:26,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 24 transitions. [2024-11-28 03:18:26,132 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 24 transitions. Word has length 15 [2024-11-28 03:18:26,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:26,133 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 24 transitions. [2024-11-28 03:18:26,133 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 03:18:26,133 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 24 transitions. [2024-11-28 03:18:26,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2024-11-28 03:18:26,135 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:26,136 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:26,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 03:18:26,136 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:18:26,137 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:26,137 INFO L85 PathProgramCache]: Analyzing trace with hash 350987531, now seen corresponding path program 1 times [2024-11-28 03:18:26,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:26,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [255503085] [2024-11-28 03:18:26,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:26,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:26,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:26,698 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:18:26,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:26,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [255503085] [2024-11-28 03:18:26,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [255503085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:26,699 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:26,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 03:18:26,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736384109] [2024-11-28 03:18:26,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:26,700 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 03:18:26,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:26,701 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 03:18:26,702 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:18:26,702 INFO L87 Difference]: Start difference. First operand 21 states and 24 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:18:26,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:26,785 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2024-11-28 03:18:26,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 03:18:26,786 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2024-11-28 03:18:26,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:26,787 INFO L225 Difference]: With dead ends: 27 [2024-11-28 03:18:26,787 INFO L226 Difference]: Without dead ends: 23 [2024-11-28 03:18:26,788 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 03:18:26,789 INFO L435 NwaCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:26,790 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 38 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 03:18:26,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2024-11-28 03:18:26,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2024-11-28 03:18:26,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 18 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:18:26,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2024-11-28 03:18:26,800 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 22 [2024-11-28 03:18:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:26,801 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2024-11-28 03:18:26,802 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:18:26,802 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2024-11-28 03:18:26,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-28 03:18:26,803 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:26,803 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:26,804 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 03:18:26,804 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:18:26,805 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:26,805 INFO L85 PathProgramCache]: Analyzing trace with hash -2064622449, now seen corresponding path program 1 times [2024-11-28 03:18:26,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:26,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707757152] [2024-11-28 03:18:26,805 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:26,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:26,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:27,140 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-28 03:18:27,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 03:18:27,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707757152] [2024-11-28 03:18:27,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707757152] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 03:18:27,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 03:18:27,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 03:18:27,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751675824] [2024-11-28 03:18:27,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 03:18:27,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 03:18:27,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 03:18:27,147 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 03:18:27,147 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-28 03:18:27,147 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:18:27,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 03:18:27,329 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2024-11-28 03:18:27,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 03:18:27,331 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 24 [2024-11-28 03:18:27,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 03:18:27,332 INFO L225 Difference]: With dead ends: 41 [2024-11-28 03:18:27,333 INFO L226 Difference]: Without dead ends: 25 [2024-11-28 03:18:27,333 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 [2024-11-28 03:18:27,334 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 7 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 03:18:27,337 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 58 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 03:18:27,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-11-28 03:18:27,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 23. [2024-11-28 03:18:27,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 19 states have (on average 1.1578947368421053) internal successors, (22), 19 states have internal predecessors, (22), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:18:27,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2024-11-28 03:18:27,350 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 24 [2024-11-28 03:18:27,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 03:18:27,351 INFO L471 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2024-11-28 03:18:27,351 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 03:18:27,351 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2024-11-28 03:18:27,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-28 03:18:27,352 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 03:18:27,352 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 03:18:27,353 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 03:18:27,353 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 03:18:27,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 03:18:27,354 INFO L85 PathProgramCache]: Analyzing trace with hash 654132947, now seen corresponding path program 1 times [2024-11-28 03:18:27,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 03:18:27,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1760696302] [2024-11-28 03:18:27,354 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:27,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 03:18:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 03:18:27,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939713929] [2024-11-28 03:18:27,445 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 03:18:27,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 03:18:27,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 03:18:27,448 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 03:18:27,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c75f0f5-37bd-416f-9d0a-b3ae3aa284dc/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 03:18:27,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 03:18:27,595 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 43 conjuncts are in the unsatisfiable core [2024-11-28 03:18:27,606 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 03:18:27,914 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:18:27,937 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-28 03:18:28,738 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 03:18:28,739 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 21 [2024-11-28 03:18:28,789 INFO L349 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2024-11-28 03:18:28,789 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 26 treesize of output 21 [2024-11-28 03:18:29,213 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 03:18:29,215 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 03:18:51,789 WARN L286 SmtUtils]: Spent 7.60s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:18:59,291 WARN L286 SmtUtils]: Spent 7.50s on a formula simplification that was a NOOP. DAG size: 22 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:19:06,580 WARN L286 SmtUtils]: Spent 6.78s on a formula simplification that was a NOOP. DAG size: 24 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:19:12,461 WARN L286 SmtUtils]: Spent 5.88s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:19:22,645 WARN L286 SmtUtils]: Spent 9.98s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:19:31,198 WARN L286 SmtUtils]: Spent 8.55s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:19:43,304 WARN L286 SmtUtils]: Spent 12.10s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:19:49,289 WARN L286 SmtUtils]: Spent 5.98s on a formula simplification that was a NOOP. DAG size: 7 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:19:57,823 WARN L286 SmtUtils]: Spent 8.53s on a formula simplification that was a NOOP. DAG size: 28 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:20:06,032 WARN L286 SmtUtils]: Spent 8.21s on a formula simplification that was a NOOP. DAG size: 26 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:20:27,727 WARN L286 SmtUtils]: Spent 16.09s on a formula simplification that was a NOOP. DAG size: 32 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:20:35,981 WARN L286 SmtUtils]: Spent 8.25s on a formula simplification that was a NOOP. DAG size: 30 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2024-11-28 03:33:47,529 WARN L286 SmtUtils]: Spent 13.19m on a formula simplification that was a NOOP. DAG size: 33 (called from [L 728] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)