./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-examples/standard_init6_ground-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/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_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-examples/standard_init6_ground-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/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_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/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 ff138f81519ab5ff475befdf624922816837c8f1983c223aa78c0525de509876 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:36:28,188 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:36:28,293 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:36:28,304 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:36:28,304 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:36:28,351 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:36:28,351 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:36:28,351 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:36:28,352 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:36:28,352 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:36:28,352 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:36:28,352 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:36:28,352 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:36:28,353 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:36:28,353 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:36:28,353 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:36:28,353 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:36:28,353 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:36:28,353 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:36:28,353 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:36:28,354 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:36:28,354 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:36:28,354 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:36:28,354 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:36:28,354 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:36:28,354 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:36:28,354 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:36:28,354 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:36:28,354 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:36:28,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:36:28,355 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:36:28,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:36:28,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:36:28,355 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:36:28,355 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:36:28,355 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:36:28,355 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:36:28,355 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:36:28,355 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:36:28,356 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:36:28,356 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:36:28,356 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:36:28,356 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:36:28,356 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:36:28,356 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:36:28,356 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:36:28,356 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:36:28,356 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:36:28,356 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_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/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 -> ff138f81519ab5ff475befdf624922816837c8f1983c223aa78c0525de509876 [2024-11-28 04:36:28,655 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:36:28,669 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:36:28,675 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:36:28,676 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:36:28,676 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:36:28,678 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/array-examples/standard_init6_ground-1.i [2024-11-28 04:36:31,558 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/data/db8ebd9ff/fb9a1109b63141cdb8f2a450629cffcd/FLAG42073a5aa [2024-11-28 04:36:31,800 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:36:31,801 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/sv-benchmarks/c/array-examples/standard_init6_ground-1.i [2024-11-28 04:36:31,807 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/data/db8ebd9ff/fb9a1109b63141cdb8f2a450629cffcd/FLAG42073a5aa [2024-11-28 04:36:31,820 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/data/db8ebd9ff/fb9a1109b63141cdb8f2a450629cffcd [2024-11-28 04:36:31,822 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:36:31,823 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:36:31,824 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:36:31,825 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:36:31,828 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:36:31,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:31" (1/1) ... [2024-11-28 04:36:31,829 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@43b89eb2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:31, skipping insertion in model container [2024-11-28 04:36:31,829 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:36:31" (1/1) ... [2024-11-28 04:36:31,844 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:36:32,014 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_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/sv-benchmarks/c/array-examples/standard_init6_ground-1.i[816,829] [2024-11-28 04:36:32,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:36:32,046 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:36:32,056 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_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/sv-benchmarks/c/array-examples/standard_init6_ground-1.i[816,829] [2024-11-28 04:36:32,064 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:36:32,075 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:36:32,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:32 WrapperNode [2024-11-28 04:36:32,076 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:36:32,077 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:36:32,077 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:36:32,077 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:36:32,084 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:32" (1/1) ... [2024-11-28 04:36:32,091 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:32" (1/1) ... [2024-11-28 04:36:32,106 INFO L138 Inliner]: procedures = 15, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 67 [2024-11-28 04:36:32,106 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:36:32,107 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:36:32,107 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:36:32,107 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:36:32,114 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:32" (1/1) ... [2024-11-28 04:36:32,114 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:32" (1/1) ... [2024-11-28 04:36:32,115 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:32" (1/1) ... [2024-11-28 04:36:32,126 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 6 writes are split as follows [0, 6]. [2024-11-28 04:36:32,126 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:32" (1/1) ... [2024-11-28 04:36:32,127 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:32" (1/1) ... [2024-11-28 04:36:32,136 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:32" (1/1) ... [2024-11-28 04:36:32,137 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:32" (1/1) ... [2024-11-28 04:36:32,141 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:32" (1/1) ... [2024-11-28 04:36:32,143 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:32" (1/1) ... [2024-11-28 04:36:32,143 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:32" (1/1) ... [2024-11-28 04:36:32,145 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:36:32,146 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:36:32,146 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:36:32,146 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:36:32,147 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:32" (1/1) ... [2024-11-28 04:36:32,152 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:36:32,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:32,179 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:36:32,184 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:36:32,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:36:32,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:36:32,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:36:32,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-28 04:36:32,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:36:32,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:36:32,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:36:32,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:36:32,214 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:36:32,215 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:36:32,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-28 04:36:32,305 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:36:32,307 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:36:32,547 INFO L? ?]: Removed 13 outVars from TransFormulas that were not future-live. [2024-11-28 04:36:32,548 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:36:32,561 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:36:32,562 INFO L312 CfgBuilder]: Removed 7 assume(true) statements. [2024-11-28 04:36:32,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:32 BoogieIcfgContainer [2024-11-28 04:36:32,563 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:36:32,566 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:36:32,568 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:36:32,573 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:36:32,574 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:36:31" (1/3) ... [2024-11-28 04:36:32,574 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e19de96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:36:32, skipping insertion in model container [2024-11-28 04:36:32,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:36:32" (2/3) ... [2024-11-28 04:36:32,575 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e19de96 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:36:32, skipping insertion in model container [2024-11-28 04:36:32,575 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:36:32" (3/3) ... [2024-11-28 04:36:32,576 INFO L128 eAbstractionObserver]: Analyzing ICFG standard_init6_ground-1.i [2024-11-28 04:36:32,593 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:36:32,595 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG standard_init6_ground-1.i that has 1 procedures, 30 locations, 1 initial locations, 7 loop locations, and 1 error locations. [2024-11-28 04:36:32,646 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:36:32,658 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;@1354be90, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:36:32,658 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 04:36:32,662 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2024-11-28 04:36:32,668 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:32,668 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:32,669 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:32,674 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:32,674 INFO L85 PathProgramCache]: Analyzing trace with hash 618632717, now seen corresponding path program 1 times [2024-11-28 04:36:32,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:32,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648102574] [2024-11-28 04:36:32,683 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:32,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:32,921 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 04:36:32,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:32,922 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648102574] [2024-11-28 04:36:32,923 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648102574] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:36:32,923 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:36:32,923 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:36:32,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490211908] [2024-11-28 04:36:32,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:36:32,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:36:32,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:32,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:36:32,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:36:32,948 INFO L87 Difference]: Start difference. First operand has 30 states, 28 states have (on average 1.5714285714285714) internal successors, (44), 29 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:33,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:33,063 INFO L93 Difference]: Finished difference Result 68 states and 106 transitions. [2024-11-28 04:36:33,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:36:33,066 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2024-11-28 04:36:33,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:33,075 INFO L225 Difference]: With dead ends: 68 [2024-11-28 04:36:33,076 INFO L226 Difference]: Without dead ends: 38 [2024-11-28 04:36:33,078 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 [2024-11-28 04:36:33,083 INFO L435 NwaCegarLoop]: 24 mSDtfsCounter, 6 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:33,084 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 35 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 04:36:33,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2024-11-28 04:36:33,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2024-11-28 04:36:33,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 31 states have (on average 1.2258064516129032) internal successors, (38), 31 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:33,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2024-11-28 04:36:33,117 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 18 [2024-11-28 04:36:33,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:33,117 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2024-11-28 04:36:33,118 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.0) internal successors, (18), 3 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:33,118 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2024-11-28 04:36:33,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-28 04:36:33,119 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:33,119 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:33,119 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:36:33,119 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:33,120 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:33,120 INFO L85 PathProgramCache]: Analyzing trace with hash 903596901, now seen corresponding path program 1 times [2024-11-28 04:36:33,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:33,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040367050] [2024-11-28 04:36:33,121 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:33,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:33,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:33,293 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:36:33,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:33,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040367050] [2024-11-28 04:36:33,293 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040367050] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:33,293 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [889765012] [2024-11-28 04:36:33,293 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:36:33,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:33,294 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:33,297 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:33,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 04:36:33,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:36:33,416 INFO L256 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-28 04:36:33,423 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:33,478 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:36:33,478 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:33,530 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-28 04:36:33,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [889765012] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:33,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:33,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-28 04:36:33,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270510404] [2024-11-28 04:36:33,532 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:33,532 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:36:33,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:33,536 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:36:33,536 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:36:33,536 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:33,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:33,778 INFO L93 Difference]: Finished difference Result 95 states and 124 transitions. [2024-11-28 04:36:33,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:36:33,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-28 04:36:33,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:33,780 INFO L225 Difference]: With dead ends: 95 [2024-11-28 04:36:33,780 INFO L226 Difference]: Without dead ends: 68 [2024-11-28 04:36:33,780 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:36:33,781 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 27 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:33,781 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 52 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-28 04:36:33,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2024-11-28 04:36:33,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2024-11-28 04:36:33,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 67 states have (on average 1.1044776119402986) internal successors, (74), 67 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:33,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 74 transitions. [2024-11-28 04:36:33,790 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 74 transitions. Word has length 30 [2024-11-28 04:36:33,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:33,791 INFO L471 AbstractCegarLoop]: Abstraction has 68 states and 74 transitions. [2024-11-28 04:36:33,791 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:33,791 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 74 transitions. [2024-11-28 04:36:33,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-28 04:36:33,792 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:33,792 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:33,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 04:36:33,996 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:33,996 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:33,997 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:33,997 INFO L85 PathProgramCache]: Analyzing trace with hash 1761375085, now seen corresponding path program 2 times [2024-11-28 04:36:33,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:33,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352514944] [2024-11-28 04:36:33,997 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:36:33,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:34,072 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:36:34,073 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:34,369 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 04:36:34,369 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:34,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352514944] [2024-11-28 04:36:34,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352514944] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:34,369 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [487237519] [2024-11-28 04:36:34,370 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:36:34,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:34,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:34,372 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:34,376 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 04:36:34,504 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:36:34,504 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:34,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 04:36:34,509 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:34,580 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 04:36:34,580 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:34,670 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-11-28 04:36:34,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [487237519] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:34,670 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:34,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-28 04:36:34,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1597304434] [2024-11-28 04:36:34,671 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:34,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 04:36:34,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:34,672 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 04:36:34,672 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:36:34,672 INFO L87 Difference]: Start difference. First operand 68 states and 74 transitions. Second operand has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:35,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:35,029 INFO L93 Difference]: Finished difference Result 197 states and 244 transitions. [2024-11-28 04:36:35,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-28 04:36:35,030 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 66 [2024-11-28 04:36:35,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:35,031 INFO L225 Difference]: With dead ends: 197 [2024-11-28 04:36:35,031 INFO L226 Difference]: Without dead ends: 140 [2024-11-28 04:36:35,032 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 126 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-28 04:36:35,032 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 87 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:35,035 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 60 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-28 04:36:35,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2024-11-28 04:36:35,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2024-11-28 04:36:35,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 139 states have (on average 1.0503597122302157) internal successors, (146), 139 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:35,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 146 transitions. [2024-11-28 04:36:35,062 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 146 transitions. Word has length 66 [2024-11-28 04:36:35,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:35,062 INFO L471 AbstractCegarLoop]: Abstraction has 140 states and 146 transitions. [2024-11-28 04:36:35,062 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.769230769230769) internal successors, (49), 13 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:35,062 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 146 transitions. [2024-11-28 04:36:35,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2024-11-28 04:36:35,069 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:35,069 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:35,078 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 04:36:35,269 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:35,270 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:35,270 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:35,270 INFO L85 PathProgramCache]: Analyzing trace with hash 583526269, now seen corresponding path program 3 times [2024-11-28 04:36:35,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:35,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332175966] [2024-11-28 04:36:35,271 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:36:35,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:35,552 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 04:36:35,552 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:36,192 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-28 04:36:36,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:36,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332175966] [2024-11-28 04:36:36,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332175966] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:36,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1142392718] [2024-11-28 04:36:36,192 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:36:36,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:36,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:36,199 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:36,200 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 04:36:43,221 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2024-11-28 04:36:43,221 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:43,228 INFO L256 TraceCheckSpWp]: Trace formula consists of 479 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-28 04:36:43,232 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:43,308 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-28 04:36:43,308 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 600 backedges. 0 proven. 100 refuted. 0 times theorem prover too weak. 500 trivial. 0 not checked. [2024-11-28 04:36:43,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1142392718] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:43,624 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:43,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-28 04:36:43,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600411090] [2024-11-28 04:36:43,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:43,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 04:36:43,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:43,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 04:36:43,628 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:36:43,628 INFO L87 Difference]: Start difference. First operand 140 states and 146 transitions. Second operand has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:44,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:44,347 INFO L93 Difference]: Finished difference Result 401 states and 484 transitions. [2024-11-28 04:36:44,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-28 04:36:44,349 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 138 [2024-11-28 04:36:44,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:44,351 INFO L225 Difference]: With dead ends: 401 [2024-11-28 04:36:44,355 INFO L226 Difference]: Without dead ends: 284 [2024-11-28 04:36:44,356 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 264 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-28 04:36:44,357 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 302 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 288 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 44 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:44,357 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 44 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 288 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-28 04:36:44,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2024-11-28 04:36:44,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 284. [2024-11-28 04:36:44,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 284 states, 283 states have (on average 1.0247349823321554) internal successors, (290), 283 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:44,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 284 states to 284 states and 290 transitions. [2024-11-28 04:36:44,398 INFO L78 Accepts]: Start accepts. Automaton has 284 states and 290 transitions. Word has length 138 [2024-11-28 04:36:44,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:44,398 INFO L471 AbstractCegarLoop]: Abstraction has 284 states and 290 transitions. [2024-11-28 04:36:44,398 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.92) internal successors, (73), 25 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:44,399 INFO L276 IsEmpty]: Start isEmpty. Operand 284 states and 290 transitions. [2024-11-28 04:36:44,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2024-11-28 04:36:44,406 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:44,406 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:44,418 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 04:36:44,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:44,607 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:44,608 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:44,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1466998883, now seen corresponding path program 4 times [2024-11-28 04:36:44,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:44,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017507805] [2024-11-28 04:36:44,608 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:36:44,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:44,744 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:36:44,744 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2024-11-28 04:36:46,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:46,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017507805] [2024-11-28 04:36:46,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017507805] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:46,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1318529236] [2024-11-28 04:36:46,534 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:36:46,535 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:46,535 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:46,540 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:46,542 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 04:36:46,850 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:36:46,850 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:46,855 INFO L256 TraceCheckSpWp]: Trace formula consists of 983 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-28 04:36:46,871 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 04:36:47,014 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2024-11-28 04:36:47,014 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 04:36:48,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2904 backedges. 0 proven. 484 refuted. 0 times theorem prover too weak. 2420 trivial. 0 not checked. [2024-11-28 04:36:48,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1318529236] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 04:36:48,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 04:36:48,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 49 [2024-11-28 04:36:48,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304849916] [2024-11-28 04:36:48,024 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 04:36:48,024 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-28 04:36:48,025 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:36:48,026 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-28 04:36:48,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 04:36:48,027 INFO L87 Difference]: Start difference. First operand 284 states and 290 transitions. Second operand has 49 states, 49 states have (on average 2.4693877551020407) internal successors, (121), 49 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:49,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 04:36:49,766 INFO L93 Difference]: Finished difference Result 809 states and 964 transitions. [2024-11-28 04:36:49,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-28 04:36:49,767 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 2.4693877551020407) internal successors, (121), 49 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 282 [2024-11-28 04:36:49,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 04:36:49,770 INFO L225 Difference]: With dead ends: 809 [2024-11-28 04:36:49,770 INFO L226 Difference]: Without dead ends: 572 [2024-11-28 04:36:49,773 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 540 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2024-11-28 04:36:49,775 INFO L435 NwaCegarLoop]: 20 mSDtfsCounter, 767 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 600 mSolverCounterSat, 892 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 1492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 892 IncrementalHoareTripleChecker+Valid, 600 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-28 04:36:49,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 76 Invalid, 1492 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [892 Valid, 600 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-28 04:36:49,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2024-11-28 04:36:49,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 572. [2024-11-28 04:36:49,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 571 states have (on average 1.0122591943957968) internal successors, (578), 571 states have internal predecessors, (578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 578 transitions. [2024-11-28 04:36:49,833 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 578 transitions. Word has length 282 [2024-11-28 04:36:49,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 04:36:49,833 INFO L471 AbstractCegarLoop]: Abstraction has 572 states and 578 transitions. [2024-11-28 04:36:49,834 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 2.4693877551020407) internal successors, (121), 49 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:36:49,834 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 578 transitions. [2024-11-28 04:36:49,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2024-11-28 04:36:49,846 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 04:36:49,846 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 46, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 04:36:49,856 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 04:36:50,051 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:50,051 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 04:36:50,052 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:36:50,052 INFO L85 PathProgramCache]: Analyzing trace with hash 488673245, now seen corresponding path program 5 times [2024-11-28 04:36:50,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:36:50,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470700080] [2024-11-28 04:36:50,052 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:36:50,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:36:51,412 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 47 check-sat command(s) [2024-11-28 04:36:51,412 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:36:56,810 INFO L134 CoverageAnalysis]: Checked inductivity of 12696 backedges. 0 proven. 2116 refuted. 0 times theorem prover too weak. 10580 trivial. 0 not checked. [2024-11-28 04:36:56,811 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:36:56,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470700080] [2024-11-28 04:36:56,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470700080] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 04:36:56,811 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447120004] [2024-11-28 04:36:56,811 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:36:56,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 04:36:56,812 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:36:56,814 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 04:36:56,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f7bf7962-9808-4b6b-9795-af6ff1b05f6e/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process