./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_partial_init_ground.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6497de01 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_partial_init_ground.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC --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 59d5175089b9a27cfba8f910bda680bc8b61a004048e68040b8cf993cc9cd888 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-6497de0 [2024-11-24 00:08:38,322 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-24 00:08:38,411 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-24 00:08:38,418 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-24 00:08:38,418 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-24 00:08:38,449 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-24 00:08:38,449 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-24 00:08:38,450 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-24 00:08:38,450 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-24 00:08:38,450 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-24 00:08:38,451 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-24 00:08:38,451 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-24 00:08:38,451 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-24 00:08:38,451 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-24 00:08:38,451 INFO L153 SettingsManager]: * Use SBE=true [2024-11-24 00:08:38,452 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-24 00:08:38,452 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-24 00:08:38,452 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-24 00:08:38,452 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-24 00:08:38,452 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-24 00:08:38,453 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-24 00:08:38,453 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-24 00:08:38,453 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-24 00:08:38,453 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-24 00:08:38,453 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-24 00:08:38,453 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-24 00:08:38,454 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-24 00:08:38,454 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-24 00:08:38,454 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-24 00:08:38,454 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:08:38,454 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:08:38,455 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:08:38,455 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:08:38,455 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-24 00:08:38,455 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-24 00:08:38,455 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-24 00:08:38,456 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-24 00:08:38,456 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:08:38,456 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-24 00:08:38,456 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-24 00:08:38,456 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-24 00:08:38,458 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-24 00:08:38,458 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-24 00:08:38,458 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-24 00:08:38,459 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-24 00:08:38,459 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-24 00:08:38,462 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-24 00:08:38,462 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-24 00:08:38,462 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_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC 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 -> 59d5175089b9a27cfba8f910bda680bc8b61a004048e68040b8cf993cc9cd888 [2024-11-24 00:08:38,796 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-24 00:08:38,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-24 00:08:38,813 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-24 00:08:38,814 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-24 00:08:38,814 INFO L274 PluginConnector]: CDTParser initialized [2024-11-24 00:08:38,816 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/../../sv-benchmarks/c/array-examples/standard_partial_init_ground.i [2024-11-24 00:08:42,141 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/data/327e05a0f/a1ef45b2e8364c5abe1befed71804b67/FLAGef215c0d4 [2024-11-24 00:08:42,492 INFO L384 CDTParser]: Found 1 translation units. [2024-11-24 00:08:42,493 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/sv-benchmarks/c/array-examples/standard_partial_init_ground.i [2024-11-24 00:08:42,517 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/data/327e05a0f/a1ef45b2e8364c5abe1befed71804b67/FLAGef215c0d4 [2024-11-24 00:08:42,564 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/data/327e05a0f/a1ef45b2e8364c5abe1befed71804b67 [2024-11-24 00:08:42,567 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-24 00:08:42,568 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-24 00:08:42,570 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-24 00:08:42,570 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-24 00:08:42,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-24 00:08:42,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:08:42" (1/1) ... [2024-11-24 00:08:42,576 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23fc6736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42, skipping insertion in model container [2024-11-24 00:08:42,576 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 12:08:42" (1/1) ... [2024-11-24 00:08:42,592 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-24 00:08:42,786 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_6050227a-d6e8-408d-80d2-dbd142b84d88/sv-benchmarks/c/array-examples/standard_partial_init_ground.i[821,834] [2024-11-24 00:08:42,814 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:08:42,824 INFO L200 MainTranslator]: Completed pre-run [2024-11-24 00:08:42,841 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_6050227a-d6e8-408d-80d2-dbd142b84d88/sv-benchmarks/c/array-examples/standard_partial_init_ground.i[821,834] [2024-11-24 00:08:42,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-24 00:08:42,889 INFO L204 MainTranslator]: Completed translation [2024-11-24 00:08:42,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42 WrapperNode [2024-11-24 00:08:42,891 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-24 00:08:42,893 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-24 00:08:42,893 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-24 00:08:42,893 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-24 00:08:42,907 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42" (1/1) ... [2024-11-24 00:08:42,916 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42" (1/1) ... [2024-11-24 00:08:42,938 INFO L138 Inliner]: procedures = 16, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 79 [2024-11-24 00:08:42,938 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-24 00:08:42,939 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-24 00:08:42,939 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-24 00:08:42,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-24 00:08:42,952 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42" (1/1) ... [2024-11-24 00:08:42,952 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42" (1/1) ... [2024-11-24 00:08:42,954 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42" (1/1) ... [2024-11-24 00:08:42,983 INFO L175 MemorySlicer]: Split 9 memory accesses to 4 slices as follows [2, 3, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-11-24 00:08:42,983 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42" (1/1) ... [2024-11-24 00:08:42,983 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42" (1/1) ... [2024-11-24 00:08:42,997 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42" (1/1) ... [2024-11-24 00:08:42,998 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42" (1/1) ... [2024-11-24 00:08:43,005 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42" (1/1) ... [2024-11-24 00:08:43,007 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42" (1/1) ... [2024-11-24 00:08:43,008 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42" (1/1) ... [2024-11-24 00:08:43,015 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-24 00:08:43,015 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-24 00:08:43,016 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-24 00:08:43,016 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-24 00:08:43,017 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42" (1/1) ... [2024-11-24 00:08:43,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-24 00:08:43,042 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:43,060 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-24 00:08:43,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-24 00:08:43,098 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-24 00:08:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-24 00:08:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-24 00:08:43,099 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-24 00:08:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-24 00:08:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-24 00:08:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-24 00:08:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-24 00:08:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-24 00:08:43,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-24 00:08:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-24 00:08:43,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-24 00:08:43,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-24 00:08:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-24 00:08:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-24 00:08:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-24 00:08:43,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-24 00:08:43,102 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-24 00:08:43,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-24 00:08:43,220 INFO L234 CfgBuilder]: Building ICFG [2024-11-24 00:08:43,222 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-24 00:08:43,421 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-24 00:08:43,421 INFO L283 CfgBuilder]: Performing block encoding [2024-11-24 00:08:43,433 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-24 00:08:43,433 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-24 00:08:43,434 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:08:43 BoogieIcfgContainer [2024-11-24 00:08:43,434 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-24 00:08:43,437 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-24 00:08:43,437 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-24 00:08:43,443 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-24 00:08:43,443 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 12:08:42" (1/3) ... [2024-11-24 00:08:43,444 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cbe3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:08:43, skipping insertion in model container [2024-11-24 00:08:43,444 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 12:08:42" (2/3) ... [2024-11-24 00:08:43,445 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24cbe3f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 12:08:43, skipping insertion in model container [2024-11-24 00:08:43,446 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 12:08:43" (3/3) ... [2024-11-24 00:08:43,449 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_partial_init_ground.i [2024-11-24 00:08:43,472 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-24 00:08:43,474 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_partial_init_ground.i that has 2 procedures, 29 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-24 00:08:43,559 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-24 00:08:43,577 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;@11991e9c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-24 00:08:43,578 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-24 00:08:43,584 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 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) [2024-11-24 00:08:43,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-24 00:08:43,594 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:43,595 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:08:43,596 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:43,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:43,602 INFO L85 PathProgramCache]: Analyzing trace with hash 211777606, now seen corresponding path program 1 times [2024-11-24 00:08:43,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:43,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397176742] [2024-11-24 00:08:43,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:43,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:43,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-24 00:08:43,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:43,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397176742] [2024-11-24 00:08:43,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397176742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-24 00:08:43,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-24 00:08:43,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-24 00:08:43,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356005692] [2024-11-24 00:08:43,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-24 00:08:43,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-24 00:08:43,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:43,909 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-24 00:08:43,910 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-24 00:08:43,912 INFO L87 Difference]: Start difference. First operand has 29 states, 24 states have (on average 1.4583333333333333) internal successors, (35), 25 states have internal predecessors, (35), 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 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:43,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:43,994 INFO L93 Difference]: Finished difference Result 60 states and 85 transitions. [2024-11-24 00:08:43,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-24 00:08:43,996 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-24 00:08:43,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:44,004 INFO L225 Difference]: With dead ends: 60 [2024-11-24 00:08:44,004 INFO L226 Difference]: Without dead ends: 31 [2024-11-24 00:08:44,008 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 [2024-11-24 00:08:44,012 INFO L435 NwaCegarLoop]: 28 mSDtfsCounter, 5 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 51 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:44,013 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 51 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:08:44,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-11-24 00:08:44,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 27. [2024-11-24 00:08:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 23 states have (on average 1.2173913043478262) internal successors, (28), 23 states have internal predecessors, (28), 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) [2024-11-24 00:08:44,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2024-11-24 00:08:44,050 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 12 [2024-11-24 00:08:44,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:44,050 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2024-11-24 00:08:44,050 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), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:44,051 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2024-11-24 00:08:44,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-24 00:08:44,052 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:44,052 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:08:44,052 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-24 00:08:44,053 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:44,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:44,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1395420963, now seen corresponding path program 1 times [2024-11-24 00:08:44,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:44,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608383721] [2024-11-24 00:08:44,054 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:44,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:44,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:44,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:08:44,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:44,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608383721] [2024-11-24 00:08:44,281 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608383721] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:44,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600362195] [2024-11-24 00:08:44,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-24 00:08:44,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:44,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:44,288 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:08:44,316 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-24 00:08:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-24 00:08:44,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-24 00:08:44,449 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:08:44,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:08:44,522 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:08:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-24 00:08:44,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600362195] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:08:44,583 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:08:44,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-24 00:08:44,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741604780] [2024-11-24 00:08:44,587 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:08:44,587 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-24 00:08:44,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:44,588 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-24 00:08:44,588 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:08:44,589 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:44,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:44,746 INFO L93 Difference]: Finished difference Result 67 states and 85 transitions. [2024-11-24 00:08:44,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-24 00:08:44,748 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-24 00:08:44,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:44,750 INFO L225 Difference]: With dead ends: 67 [2024-11-24 00:08:44,750 INFO L226 Difference]: Without dead ends: 45 [2024-11-24 00:08:44,751 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-24 00:08:44,752 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 34 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:44,753 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 65 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-24 00:08:44,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2024-11-24 00:08:44,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2024-11-24 00:08:44,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 41 states have (on average 1.1951219512195121) internal successors, (49), 41 states have internal predecessors, (49), 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) [2024-11-24 00:08:44,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 53 transitions. [2024-11-24 00:08:44,770 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 53 transitions. Word has length 18 [2024-11-24 00:08:44,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:44,770 INFO L471 AbstractCegarLoop]: Abstraction has 45 states and 53 transitions. [2024-11-24 00:08:44,770 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 7 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:44,770 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 53 transitions. [2024-11-24 00:08:44,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-24 00:08:44,771 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:44,771 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:08:44,785 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-24 00:08:44,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:44,972 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:44,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:44,973 INFO L85 PathProgramCache]: Analyzing trace with hash 159370593, now seen corresponding path program 2 times [2024-11-24 00:08:44,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:44,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059114505] [2024-11-24 00:08:44,973 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:08:44,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:45,066 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:08:45,067 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:08:45,359 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-24 00:08:45,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:45,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059114505] [2024-11-24 00:08:45,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059114505] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:45,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1041838003] [2024-11-24 00:08:45,362 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-24 00:08:45,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:45,363 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:45,368 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:08:45,371 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-24 00:08:45,530 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-24 00:08:45,531 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:08:45,532 INFO L256 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-24 00:08:45,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:08:45,589 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-24 00:08:45,591 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:08:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-24 00:08:45,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1041838003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:08:45,728 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:08:45,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-24 00:08:45,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194340362] [2024-11-24 00:08:45,728 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:08:45,729 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-24 00:08:45,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:45,731 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-24 00:08:45,732 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:08:45,732 INFO L87 Difference]: Start difference. First operand 45 states and 53 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:45,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:45,998 INFO L93 Difference]: Finished difference Result 115 states and 148 transitions. [2024-11-24 00:08:46,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-24 00:08:46,003 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 36 [2024-11-24 00:08:46,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:46,004 INFO L225 Difference]: With dead ends: 115 [2024-11-24 00:08:46,004 INFO L226 Difference]: Without dead ends: 81 [2024-11-24 00:08:46,005 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-24 00:08:46,005 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 90 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:46,006 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [90 Valid, 72 Invalid, 103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-24 00:08:46,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2024-11-24 00:08:46,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2024-11-24 00:08:46,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 77 states have internal predecessors, (91), 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) [2024-11-24 00:08:46,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2024-11-24 00:08:46,023 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 36 [2024-11-24 00:08:46,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:46,027 INFO L471 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2024-11-24 00:08:46,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:46,027 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2024-11-24 00:08:46,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-11-24 00:08:46,029 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:46,029 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:08:46,037 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-24 00:08:46,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:46,230 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:46,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:46,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1825504407, now seen corresponding path program 3 times [2024-11-24 00:08:46,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:46,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045172904] [2024-11-24 00:08:46,231 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:08:46,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:46,643 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-24 00:08:46,643 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:08:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-24 00:08:47,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:47,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045172904] [2024-11-24 00:08:47,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045172904] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:47,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [285265233] [2024-11-24 00:08:47,294 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-24 00:08:47,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:47,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:47,296 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:08:47,301 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-24 00:08:50,079 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-24 00:08:50,079 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:08:50,085 INFO L256 TraceCheckSpWp]: Trace formula consists of 371 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-24 00:08:50,090 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:08:50,215 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-24 00:08:50,215 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:08:50,633 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2024-11-24 00:08:50,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [285265233] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:08:50,634 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:08:50,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-24 00:08:50,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905191471] [2024-11-24 00:08:50,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:08:50,635 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-24 00:08:50,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:50,641 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-24 00:08:50,642 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:08:50,642 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:51,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:51,078 INFO L93 Difference]: Finished difference Result 211 states and 274 transitions. [2024-11-24 00:08:51,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-24 00:08:51,079 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2024-11-24 00:08:51,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:51,081 INFO L225 Difference]: With dead ends: 211 [2024-11-24 00:08:51,081 INFO L226 Difference]: Without dead ends: 153 [2024-11-24 00:08:51,082 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-24 00:08:51,083 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 134 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 219 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:51,083 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 102 Invalid, 219 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-24 00:08:51,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2024-11-24 00:08:51,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2024-11-24 00:08:51,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 149 states have (on average 1.174496644295302) internal successors, (175), 149 states have internal predecessors, (175), 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) [2024-11-24 00:08:51,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 179 transitions. [2024-11-24 00:08:51,103 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 179 transitions. Word has length 72 [2024-11-24 00:08:51,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:51,103 INFO L471 AbstractCegarLoop]: Abstraction has 153 states and 179 transitions. [2024-11-24 00:08:51,103 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.0) internal successors, (100), 25 states have internal predecessors, (100), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:51,104 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 179 transitions. [2024-11-24 00:08:51,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2024-11-24 00:08:51,107 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:51,108 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:08:51,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-24 00:08:51,308 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:51,308 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:51,309 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:51,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1000694649, now seen corresponding path program 4 times [2024-11-24 00:08:51,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:51,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1745933434] [2024-11-24 00:08:51,309 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:08:51,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:51,453 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:08:51,453 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:08:53,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-24 00:08:53,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:08:53,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1745933434] [2024-11-24 00:08:53,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1745933434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:08:53,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545584083] [2024-11-24 00:08:53,384 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-24 00:08:53,384 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:53,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:08:53,390 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:08:53,392 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-24 00:08:54,000 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-24 00:08:54,000 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:08:54,006 INFO L256 TraceCheckSpWp]: Trace formula consists of 731 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-24 00:08:54,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-24 00:08:54,274 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-24 00:08:54,275 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-24 00:08:55,688 INFO L134 CoverageAnalysis]: Checked inductivity of 1430 backedges. 0 proven. 946 refuted. 0 times theorem prover too weak. 484 trivial. 0 not checked. [2024-11-24 00:08:55,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1545584083] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-24 00:08:55,688 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-24 00:08:55,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 25, 25] total 52 [2024-11-24 00:08:55,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611467132] [2024-11-24 00:08:55,689 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-24 00:08:55,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2024-11-24 00:08:55,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-24 00:08:55,694 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2024-11-24 00:08:55,697 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1182, Invalid=1470, Unknown=0, NotChecked=0, Total=2652 [2024-11-24 00:08:55,697 INFO L87 Difference]: Start difference. First operand 153 states and 179 transitions. Second operand has 52 states, 51 states have (on average 3.9019607843137254) internal successors, (199), 51 states have internal predecessors, (199), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:56,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-24 00:08:56,646 INFO L93 Difference]: Finished difference Result 403 states and 526 transitions. [2024-11-24 00:08:56,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-24 00:08:56,647 INFO L78 Accepts]: Start accepts. Automaton has has 52 states, 51 states have (on average 3.9019607843137254) internal successors, (199), 51 states have internal predecessors, (199), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 144 [2024-11-24 00:08:56,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-24 00:08:56,649 INFO L225 Difference]: With dead ends: 403 [2024-11-24 00:08:56,649 INFO L226 Difference]: Without dead ends: 297 [2024-11-24 00:08:56,652 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 315 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1182, Invalid=1470, Unknown=0, NotChecked=0, Total=2652 [2024-11-24 00:08:56,653 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 312 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-24 00:08:56,653 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 256 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-24 00:08:56,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 297 states. [2024-11-24 00:08:56,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 297 to 297. [2024-11-24 00:08:56,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 297 states, 293 states have (on average 1.1706484641638226) internal successors, (343), 293 states have internal predecessors, (343), 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) [2024-11-24 00:08:56,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 347 transitions. [2024-11-24 00:08:56,690 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 347 transitions. Word has length 144 [2024-11-24 00:08:56,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-24 00:08:56,691 INFO L471 AbstractCegarLoop]: Abstraction has 297 states and 347 transitions. [2024-11-24 00:08:56,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 52 states, 51 states have (on average 3.9019607843137254) internal successors, (199), 51 states have internal predecessors, (199), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-24 00:08:56,691 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 347 transitions. [2024-11-24 00:08:56,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 289 [2024-11-24 00:08:56,704 INFO L210 NwaCegarLoop]: Found error trace [2024-11-24 00:08:56,704 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-24 00:08:56,717 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-24 00:08:56,908 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:08:56,908 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-24 00:08:56,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-24 00:08:56,909 INFO L85 PathProgramCache]: Analyzing trace with hash -1446120551, now seen corresponding path program 5 times [2024-11-24 00:08:56,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-24 00:08:56,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051005972] [2024-11-24 00:08:56,909 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:08:56,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-24 00:08:59,522 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-24 00:08:59,523 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-24 00:09:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 6302 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 4186 trivial. 0 not checked. [2024-11-24 00:09:04,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-24 00:09:04,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051005972] [2024-11-24 00:09:04,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051005972] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-24 00:09:04,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60408049] [2024-11-24 00:09:04,287 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-24 00:09:04,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-24 00:09:04,287 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 [2024-11-24 00:09:04,290 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-24 00:09:04,292 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6050227a-d6e8-408d-80d2-dbd142b84d88/bin/uautomizer-verify-LYvppIcaGC/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process