./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/zonotope_3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/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_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/zonotope_3.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/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_4102795f-7677-476e-a817-cba29e7ef7e8/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 c1619194307da84227512f62eb582bffd66266544ce804bd80ee6a40fe157ac7 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 19:49:20,716 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 19:49:20,806 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 19:49:20,812 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 19:49:20,812 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 19:49:20,858 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 19:49:20,859 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 19:49:20,859 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 19:49:20,859 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 19:49:20,860 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 19:49:20,861 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 19:49:20,862 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 19:49:20,862 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 19:49:20,862 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 19:49:20,862 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 19:49:20,863 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 19:49:20,863 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 19:49:20,864 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 19:49:20,864 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 19:49:20,864 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 19:49:20,864 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 19:49:20,864 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 19:49:20,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 19:49:20,865 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 19:49:20,865 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 19:49:20,865 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 19:49:20,865 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 19:49:20,865 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 19:49:20,865 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 19:49:20,865 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:49:20,866 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:49:20,866 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:49:20,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:20,866 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 19:49:20,866 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 19:49:20,866 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 19:49:20,866 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 19:49:20,866 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:20,866 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 19:49:20,866 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 19:49:20,866 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 19:49:20,866 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 19:49:20,867 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 19:49:20,867 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 19:49:20,867 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 19:49:20,867 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 19:49:20,867 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 19:49:20,867 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 19:49:20,867 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_4102795f-7677-476e-a817-cba29e7ef7e8/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 -> c1619194307da84227512f62eb582bffd66266544ce804bd80ee6a40fe157ac7 [2024-11-27 19:49:21,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 19:49:21,231 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 19:49:21,235 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 19:49:21,237 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 19:49:21,237 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 19:49:21,240 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/float-benchs/zonotope_3.c [2024-11-27 19:49:24,213 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/data/8073f3aad/39e91738dddc41bb873d9afba52351e8/FLAG50d639512 [2024-11-27 19:49:24,502 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 19:49:24,502 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/sv-benchmarks/c/float-benchs/zonotope_3.c [2024-11-27 19:49:24,526 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/data/8073f3aad/39e91738dddc41bb873d9afba52351e8/FLAG50d639512 [2024-11-27 19:49:24,552 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/data/8073f3aad/39e91738dddc41bb873d9afba52351e8 [2024-11-27 19:49:24,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 19:49:24,557 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 19:49:24,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 19:49:24,559 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 19:49:24,565 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 19:49:24,566 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,569 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ce541b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24, skipping insertion in model container [2024-11-27 19:49:24,570 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,587 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 19:49:24,787 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_4102795f-7677-476e-a817-cba29e7ef7e8/sv-benchmarks/c/float-benchs/zonotope_3.c[604,617] [2024-11-27 19:49:24,817 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:49:24,828 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 19:49:24,842 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_4102795f-7677-476e-a817-cba29e7ef7e8/sv-benchmarks/c/float-benchs/zonotope_3.c[604,617] [2024-11-27 19:49:24,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 19:49:24,872 INFO L204 MainTranslator]: Completed translation [2024-11-27 19:49:24,873 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24 WrapperNode [2024-11-27 19:49:24,875 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 19:49:24,877 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 19:49:24,877 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 19:49:24,877 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 19:49:24,888 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,897 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,923 INFO L138 Inliner]: procedures = 16, calls = 17, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 64 [2024-11-27 19:49:24,924 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 19:49:24,924 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 19:49:24,925 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 19:49:24,925 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 19:49:24,936 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,936 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,939 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,959 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 19:49:24,960 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,960 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,968 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,969 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,976 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,977 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,981 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,982 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 19:49:24,983 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 19:49:24,984 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 19:49:24,988 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 19:49:24,989 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (1/1) ... [2024-11-27 19:49:24,998 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 19:49:25,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:25,028 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 19:49:25,031 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 19:49:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 19:49:25,060 INFO L130 BoogieDeclarations]: Found specification of procedure f [2024-11-27 19:49:25,060 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2024-11-27 19:49:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure g [2024-11-27 19:49:25,061 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2024-11-27 19:49:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 19:49:25,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 19:49:25,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 19:49:25,148 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 19:49:25,154 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 19:49:25,346 INFO L? ?]: Removed 16 outVars from TransFormulas that were not future-live. [2024-11-27 19:49:25,346 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 19:49:25,362 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 19:49:25,363 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-27 19:49:25,364 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:49:25 BoogieIcfgContainer [2024-11-27 19:49:25,364 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 19:49:25,367 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 19:49:25,367 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 19:49:25,375 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 19:49:25,375 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 07:49:24" (1/3) ... [2024-11-27 19:49:25,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39aae89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:49:25, skipping insertion in model container [2024-11-27 19:49:25,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 07:49:24" (2/3) ... [2024-11-27 19:49:25,378 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39aae89b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 07:49:25, skipping insertion in model container [2024-11-27 19:49:25,380 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 07:49:25" (3/3) ... [2024-11-27 19:49:25,381 INFO L128 eAbstractionObserver]: Analyzing ICFG zonotope_3.c [2024-11-27 19:49:25,402 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 19:49:25,406 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG zonotope_3.c that has 3 procedures, 36 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-27 19:49:25,493 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 19:49:25,512 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;@1ce3c44d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 19:49:25,512 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-27 19:49:25,517 INFO L276 IsEmpty]: Start isEmpty. Operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-27 19:49:25,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-27 19:49:25,526 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:25,526 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:25,527 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:25,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:25,533 INFO L85 PathProgramCache]: Analyzing trace with hash -791062114, now seen corresponding path program 1 times [2024-11-27 19:49:25,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:25,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840906055] [2024-11-27 19:49:25,544 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:25,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:25,859 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-27 19:49:25,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:25,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840906055] [2024-11-27 19:49:25,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840906055] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 19:49:25,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 19:49:25,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-27 19:49:25,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480229126] [2024-11-27 19:49:25,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 19:49:25,873 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 19:49:25,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:25,897 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 19:49:25,898 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:25,900 INFO L87 Difference]: Start difference. First operand has 36 states, 24 states have (on average 1.2083333333333333) internal successors, (29), 25 states have internal predecessors, (29), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-27 19:49:25,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:25,959 INFO L93 Difference]: Finished difference Result 74 states and 95 transitions. [2024-11-27 19:49:25,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 19:49:25,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 26 [2024-11-27 19:49:25,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:25,972 INFO L225 Difference]: With dead ends: 74 [2024-11-27 19:49:25,972 INFO L226 Difference]: Without dead ends: 44 [2024-11-27 19:49:25,977 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 19:49:25,982 INFO L435 NwaCegarLoop]: 40 mSDtfsCounter, 7 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:25,984 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 76 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-27 19:49:26,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2024-11-27 19:49:26,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2024-11-27 19:49:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 22 states have internal predecessors, (23), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-27 19:49:26,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 39 transitions. [2024-11-27 19:49:26,034 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 39 transitions. Word has length 26 [2024-11-27 19:49:26,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:26,036 INFO L471 AbstractCegarLoop]: Abstraction has 33 states and 39 transitions. [2024-11-27 19:49:26,036 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-27 19:49:26,036 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 39 transitions. [2024-11-27 19:49:26,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-27 19:49:26,040 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:26,040 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1] [2024-11-27 19:49:26,040 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 19:49:26,041 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:26,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:26,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1249969672, now seen corresponding path program 1 times [2024-11-27 19:49:26,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:26,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1210572683] [2024-11-27 19:49:26,043 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:26,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:26,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:49:26,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:26,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1210572683] [2024-11-27 19:49:26,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1210572683] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:26,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [62624084] [2024-11-27 19:49:26,261 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 19:49:26,261 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:26,261 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:26,268 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:26,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 19:49:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:49:26,402 INFO L256 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-27 19:49:26,414 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:26,526 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:49:26,526 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:49:26,671 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2024-11-27 19:49:26,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [62624084] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:49:26,671 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:49:26,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-27 19:49:26,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912703655] [2024-11-27 19:49:26,673 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:49:26,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-27 19:49:26,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:26,674 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-27 19:49:26,675 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:49:26,675 INFO L87 Difference]: Start difference. First operand 33 states and 39 transitions. Second operand has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-27 19:49:26,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:26,779 INFO L93 Difference]: Finished difference Result 73 states and 93 transitions. [2024-11-27 19:49:26,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 19:49:26,781 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 50 [2024-11-27 19:49:26,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:26,782 INFO L225 Difference]: With dead ends: 73 [2024-11-27 19:49:26,782 INFO L226 Difference]: Without dead ends: 69 [2024-11-27 19:49:26,783 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-27 19:49:26,784 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:26,784 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 152 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-27 19:49:26,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2024-11-27 19:49:26,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2024-11-27 19:49:26,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 46 states have (on average 1.0217391304347827) internal successors, (47), 46 states have internal predecessors, (47), 20 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2024-11-27 19:49:26,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 87 transitions. [2024-11-27 19:49:26,797 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 87 transitions. Word has length 50 [2024-11-27 19:49:26,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:26,798 INFO L471 AbstractCegarLoop]: Abstraction has 69 states and 87 transitions. [2024-11-27 19:49:26,798 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.857142857142857) internal successors, (41), 7 states have internal predecessors, (41), 4 states have call successors, (16), 1 states have call predecessors, (16), 1 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2024-11-27 19:49:26,798 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 87 transitions. [2024-11-27 19:49:26,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2024-11-27 19:49:26,802 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:26,802 INFO L218 NwaCegarLoop]: trace histogram [10, 10, 10, 10, 4, 4, 4, 4, 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] [2024-11-27 19:49:26,813 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-27 19:49:27,005 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:27,005 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:27,006 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:27,006 INFO L85 PathProgramCache]: Analyzing trace with hash -171485370, now seen corresponding path program 2 times [2024-11-27 19:49:27,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:27,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475470662] [2024-11-27 19:49:27,006 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 19:49:27,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:27,101 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 19:49:27,105 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-11-27 19:49:27,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:27,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475470662] [2024-11-27 19:49:27,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475470662] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:27,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [907147478] [2024-11-27 19:49:27,483 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 19:49:27,483 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:27,484 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:27,486 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:27,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 19:49:27,654 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 19:49:27,654 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:27,656 INFO L256 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 19:49:27,665 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:27,853 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-11-27 19:49:27,853 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:49:28,209 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2024-11-27 19:49:28,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [907147478] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:49:28,209 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:49:28,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2024-11-27 19:49:28,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067557922] [2024-11-27 19:49:28,210 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:49:28,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-27 19:49:28,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:28,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-27 19:49:28,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-27 19:49:28,216 INFO L87 Difference]: Start difference. First operand 69 states and 87 transitions. Second operand has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-11-27 19:49:28,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:28,448 INFO L93 Difference]: Finished difference Result 145 states and 192 transitions. [2024-11-27 19:49:28,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-27 19:49:28,449 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) Word has length 122 [2024-11-27 19:49:28,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:28,452 INFO L225 Difference]: With dead ends: 145 [2024-11-27 19:49:28,452 INFO L226 Difference]: Without dead ends: 141 [2024-11-27 19:49:28,453 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-27 19:49:28,454 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 129 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 165 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:28,455 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 165 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-27 19:49:28,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-27 19:49:28,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2024-11-27 19:49:28,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141 states, 94 states have (on average 1.0106382978723405) internal successors, (95), 94 states have internal predecessors, (95), 44 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 44 states have call predecessors, (44), 44 states have call successors, (44) [2024-11-27 19:49:28,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 183 transitions. [2024-11-27 19:49:28,484 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 183 transitions. Word has length 122 [2024-11-27 19:49:28,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:28,485 INFO L471 AbstractCegarLoop]: Abstraction has 141 states and 183 transitions. [2024-11-27 19:49:28,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.846153846153846) internal successors, (89), 13 states have internal predecessors, (89), 10 states have call successors, (40), 1 states have call predecessors, (40), 1 states have return successors, (40), 10 states have call predecessors, (40), 10 states have call successors, (40) [2024-11-27 19:49:28,485 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 183 transitions. [2024-11-27 19:49:28,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2024-11-27 19:49:28,491 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:28,491 INFO L218 NwaCegarLoop]: trace histogram [22, 22, 22, 22, 10, 10, 10, 10, 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] [2024-11-27 19:49:28,499 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-27 19:49:28,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:28,694 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:28,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:28,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1113796670, now seen corresponding path program 3 times [2024-11-27 19:49:28,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:28,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403683535] [2024-11-27 19:49:28,695 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 19:49:28,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:28,812 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-27 19:49:28,812 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:29,667 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2024-11-27 19:49:29,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:29,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403683535] [2024-11-27 19:49:29,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403683535] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:29,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428163003] [2024-11-27 19:49:29,667 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 19:49:29,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:29,668 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:29,670 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:29,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-27 19:49:29,918 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 17 check-sat command(s) [2024-11-27 19:49:29,918 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:29,921 INFO L256 TraceCheckSpWp]: Trace formula consists of 554 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-27 19:49:29,932 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:30,228 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2024-11-27 19:49:30,228 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:49:30,908 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 550 refuted. 0 times theorem prover too weak. 1386 trivial. 0 not checked. [2024-11-27 19:49:30,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428163003] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:49:30,909 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:49:30,909 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 25 [2024-11-27 19:49:30,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259649390] [2024-11-27 19:49:30,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:49:30,910 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-27 19:49:30,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:30,912 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-27 19:49:30,912 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-27 19:49:30,913 INFO L87 Difference]: Start difference. First operand 141 states and 183 transitions. Second operand has 25 states, 25 states have (on average 7.4) internal successors, (185), 25 states have internal predecessors, (185), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) [2024-11-27 19:49:31,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:31,277 INFO L93 Difference]: Finished difference Result 289 states and 390 transitions. [2024-11-27 19:49:31,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-27 19:49:31,277 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 7.4) internal successors, (185), 25 states have internal predecessors, (185), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) Word has length 266 [2024-11-27 19:49:31,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:31,281 INFO L225 Difference]: With dead ends: 289 [2024-11-27 19:49:31,284 INFO L226 Difference]: Without dead ends: 285 [2024-11-27 19:49:31,284 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 520 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2024-11-27 19:49:31,285 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:31,285 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 260 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-27 19:49:31,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-27 19:49:31,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-11-27 19:49:31,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 190 states have (on average 1.0052631578947369) internal successors, (191), 190 states have internal predecessors, (191), 92 states have call successors, (92), 2 states have call predecessors, (92), 2 states have return successors, (92), 92 states have call predecessors, (92), 92 states have call successors, (92) [2024-11-27 19:49:31,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 375 transitions. [2024-11-27 19:49:31,345 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 375 transitions. Word has length 266 [2024-11-27 19:49:31,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:31,349 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 375 transitions. [2024-11-27 19:49:31,349 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 7.4) internal successors, (185), 25 states have internal predecessors, (185), 22 states have call successors, (88), 1 states have call predecessors, (88), 1 states have return successors, (88), 22 states have call predecessors, (88), 22 states have call successors, (88) [2024-11-27 19:49:31,349 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 375 transitions. [2024-11-27 19:49:31,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 555 [2024-11-27 19:49:31,365 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:31,365 INFO L218 NwaCegarLoop]: trace histogram [46, 46, 46, 46, 22, 22, 22, 22, 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] [2024-11-27 19:49:31,374 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-27 19:49:31,566 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:31,566 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:31,567 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:31,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1296885574, now seen corresponding path program 4 times [2024-11-27 19:49:31,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:31,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570788058] [2024-11-27 19:49:31,567 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 19:49:31,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:31,700 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 19:49:31,700 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 9004 backedges. 0 proven. 2794 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2024-11-27 19:49:33,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:33,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570788058] [2024-11-27 19:49:33,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570788058] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:33,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009078316] [2024-11-27 19:49:33,405 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 19:49:33,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:33,405 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:33,407 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:33,410 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-27 19:49:33,727 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 19:49:33,727 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:33,733 INFO L256 TraceCheckSpWp]: Trace formula consists of 1176 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-27 19:49:33,753 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:34,304 INFO L134 CoverageAnalysis]: Checked inductivity of 9004 backedges. 0 proven. 2794 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2024-11-27 19:49:34,304 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:49:36,269 INFO L134 CoverageAnalysis]: Checked inductivity of 9004 backedges. 0 proven. 2794 refuted. 0 times theorem prover too weak. 6210 trivial. 0 not checked. [2024-11-27 19:49:36,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009078316] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:49:36,269 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:49:36,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25, 25] total 48 [2024-11-27 19:49:36,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464731629] [2024-11-27 19:49:36,270 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:49:36,272 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2024-11-27 19:49:36,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:36,275 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2024-11-27 19:49:36,276 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 19:49:36,277 INFO L87 Difference]: Start difference. First operand 285 states and 375 transitions. Second operand has 48 states, 48 states have (on average 7.666666666666667) internal successors, (368), 48 states have internal predecessors, (368), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) [2024-11-27 19:49:37,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:37,097 INFO L93 Difference]: Finished difference Result 577 states and 786 transitions. [2024-11-27 19:49:37,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2024-11-27 19:49:37,098 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 48 states have (on average 7.666666666666667) internal successors, (368), 48 states have internal predecessors, (368), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) Word has length 554 [2024-11-27 19:49:37,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:37,106 INFO L225 Difference]: With dead ends: 577 [2024-11-27 19:49:37,106 INFO L226 Difference]: Without dead ends: 573 [2024-11-27 19:49:37,109 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 1131 GetRequests, 1085 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1128, Invalid=1128, Unknown=0, NotChecked=0, Total=2256 [2024-11-27 19:49:37,111 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 281 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 281 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:37,112 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 398 Invalid, 283 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 281 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-27 19:49:37,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-11-27 19:49:37,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 573. [2024-11-27 19:49:37,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 382 states have (on average 1.0026178010471205) internal successors, (383), 382 states have internal predecessors, (383), 188 states have call successors, (188), 2 states have call predecessors, (188), 2 states have return successors, (188), 188 states have call predecessors, (188), 188 states have call successors, (188) [2024-11-27 19:49:37,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 759 transitions. [2024-11-27 19:49:37,173 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 759 transitions. Word has length 554 [2024-11-27 19:49:37,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:37,175 INFO L471 AbstractCegarLoop]: Abstraction has 573 states and 759 transitions. [2024-11-27 19:49:37,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 48 states have (on average 7.666666666666667) internal successors, (368), 48 states have internal predecessors, (368), 45 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 45 states have call predecessors, (180), 45 states have call successors, (180) [2024-11-27 19:49:37,176 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 759 transitions. [2024-11-27 19:49:37,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1131 [2024-11-27 19:49:37,216 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:37,216 INFO L218 NwaCegarLoop]: trace histogram [94, 94, 94, 94, 46, 46, 46, 46, 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] [2024-11-27 19:49:37,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-27 19:49:37,417 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:37,417 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:37,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:37,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1154288298, now seen corresponding path program 5 times [2024-11-27 19:49:37,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:37,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342454985] [2024-11-27 19:49:37,420 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 19:49:37,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:37,971 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2024-11-27 19:49:37,971 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:46,040 INFO L134 CoverageAnalysis]: Checked inductivity of 38692 backedges. 0 proven. 12466 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2024-11-27 19:49:46,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:49:46,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342454985] [2024-11-27 19:49:46,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342454985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:49:46,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [181168415] [2024-11-27 19:49:46,041 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 19:49:46,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:46,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:49:46,046 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:49:46,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-27 19:49:47,104 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 72 check-sat command(s) [2024-11-27 19:49:47,104 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:49:47,114 INFO L256 TraceCheckSpWp]: Trace formula consists of 2376 conjuncts, 48 conjuncts are in the unsatisfiable core [2024-11-27 19:49:47,150 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:49:48,454 INFO L134 CoverageAnalysis]: Checked inductivity of 38692 backedges. 0 proven. 12466 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2024-11-27 19:49:48,455 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:49:53,407 INFO L134 CoverageAnalysis]: Checked inductivity of 38692 backedges. 0 proven. 12466 refuted. 0 times theorem prover too weak. 26226 trivial. 0 not checked. [2024-11-27 19:49:53,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [181168415] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:49:53,408 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:49:53,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [49, 49, 49] total 96 [2024-11-27 19:49:53,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188572410] [2024-11-27 19:49:53,409 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:49:53,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 96 states [2024-11-27 19:49:53,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:49:53,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 96 interpolants. [2024-11-27 19:49:53,421 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-27 19:49:53,423 INFO L87 Difference]: Start difference. First operand 573 states and 759 transitions. Second operand has 96 states, 96 states have (on average 7.833333333333333) internal successors, (752), 96 states have internal predecessors, (752), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) [2024-11-27 19:49:55,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:49:55,157 INFO L93 Difference]: Finished difference Result 1153 states and 1578 transitions. [2024-11-27 19:49:55,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2024-11-27 19:49:55,159 INFO L78 Accepts]: Start accepts. Automaton has has 96 states, 96 states have (on average 7.833333333333333) internal successors, (752), 96 states have internal predecessors, (752), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) Word has length 1130 [2024-11-27 19:49:55,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:49:55,170 INFO L225 Difference]: With dead ends: 1153 [2024-11-27 19:49:55,170 INFO L226 Difference]: Without dead ends: 1149 [2024-11-27 19:49:55,173 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2307 GetRequests, 2213 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=4560, Invalid=4560, Unknown=0, NotChecked=0, Total=9120 [2024-11-27 19:49:55,174 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 673 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-27 19:49:55,174 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 709 Invalid, 573 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-27 19:49:55,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2024-11-27 19:49:55,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1149. [2024-11-27 19:49:55,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1149 states, 766 states have (on average 1.0013054830287207) internal successors, (767), 766 states have internal predecessors, (767), 380 states have call successors, (380), 2 states have call predecessors, (380), 2 states have return successors, (380), 380 states have call predecessors, (380), 380 states have call successors, (380) [2024-11-27 19:49:55,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1149 states to 1149 states and 1527 transitions. [2024-11-27 19:49:55,257 INFO L78 Accepts]: Start accepts. Automaton has 1149 states and 1527 transitions. Word has length 1130 [2024-11-27 19:49:55,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:49:55,262 INFO L471 AbstractCegarLoop]: Abstraction has 1149 states and 1527 transitions. [2024-11-27 19:49:55,264 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 96 states, 96 states have (on average 7.833333333333333) internal successors, (752), 96 states have internal predecessors, (752), 93 states have call successors, (372), 1 states have call predecessors, (372), 1 states have return successors, (372), 93 states have call predecessors, (372), 93 states have call successors, (372) [2024-11-27 19:49:55,265 INFO L276 IsEmpty]: Start isEmpty. Operand 1149 states and 1527 transitions. [2024-11-27 19:49:55,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2283 [2024-11-27 19:49:55,335 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:49:55,336 INFO L218 NwaCegarLoop]: trace histogram [190, 190, 190, 190, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 94, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:49:55,345 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-27 19:49:55,536 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:49:55,537 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:49:55,537 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:49:55,538 INFO L85 PathProgramCache]: Analyzing trace with hash -1699320182, now seen corresponding path program 6 times [2024-11-27 19:49:55,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:49:55,538 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443607388] [2024-11-27 19:49:55,538 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 19:49:55,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:49:56,283 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 144 check-sat command(s) [2024-11-27 19:49:56,283 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:50:24,209 INFO L134 CoverageAnalysis]: Checked inductivity of 160276 backedges. 0 proven. 52546 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2024-11-27 19:50:24,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:50:24,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443607388] [2024-11-27 19:50:24,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443607388] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:50:24,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [906840201] [2024-11-27 19:50:24,210 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-27 19:50:24,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:24,211 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:50:24,213 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:50:24,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-27 19:50:26,722 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 144 check-sat command(s) [2024-11-27 19:50:26,722 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 19:50:26,742 INFO L256 TraceCheckSpWp]: Trace formula consists of 4776 conjuncts, 96 conjuncts are in the unsatisfiable core [2024-11-27 19:50:26,781 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:50:28,179 INFO L134 CoverageAnalysis]: Checked inductivity of 160276 backedges. 0 proven. 52546 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2024-11-27 19:50:28,179 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:50:42,684 INFO L134 CoverageAnalysis]: Checked inductivity of 160276 backedges. 0 proven. 52546 refuted. 0 times theorem prover too weak. 107730 trivial. 0 not checked. [2024-11-27 19:50:42,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [906840201] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:50:42,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:50:42,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [97, 97, 97] total 193 [2024-11-27 19:50:42,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001916391] [2024-11-27 19:50:42,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:50:42,690 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 193 states [2024-11-27 19:50:42,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:50:42,699 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 193 interpolants. [2024-11-27 19:50:42,708 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-27 19:50:42,711 INFO L87 Difference]: Start difference. First operand 1149 states and 1527 transitions. Second operand has 193 states, 193 states have (on average 7.922279792746114) internal successors, (1529), 193 states have internal predecessors, (1529), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) [2024-11-27 19:50:48,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:50:48,500 INFO L93 Difference]: Finished difference Result 2305 states and 3162 transitions. [2024-11-27 19:50:48,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 192 states. [2024-11-27 19:50:48,503 INFO L78 Accepts]: Start accepts. Automaton has has 193 states, 193 states have (on average 7.922279792746114) internal successors, (1529), 193 states have internal predecessors, (1529), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) Word has length 2282 [2024-11-27 19:50:48,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:50:48,519 INFO L225 Difference]: With dead ends: 2305 [2024-11-27 19:50:48,520 INFO L226 Difference]: Without dead ends: 2301 [2024-11-27 19:50:48,526 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4659 GetRequests, 4468 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 15.8s TimeCoverageRelationStatistics Valid=18528, Invalid=18528, Unknown=0, NotChecked=0, Total=37056 [2024-11-27 19:50:48,527 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 1341 mSDsCounter, 0 mSdLazyCounter, 1155 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 1377 SdHoareTripleChecker+Invalid, 1157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 1155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2024-11-27 19:50:48,527 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 1377 Invalid, 1157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 1155 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2024-11-27 19:50:48,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2301 states. [2024-11-27 19:50:48,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2301 to 2301. [2024-11-27 19:50:48,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2301 states, 1534 states have (on average 1.0006518904823989) internal successors, (1535), 1534 states have internal predecessors, (1535), 764 states have call successors, (764), 2 states have call predecessors, (764), 2 states have return successors, (764), 764 states have call predecessors, (764), 764 states have call successors, (764) [2024-11-27 19:50:48,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 3063 transitions. [2024-11-27 19:50:48,646 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 3063 transitions. Word has length 2282 [2024-11-27 19:50:48,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:50:48,652 INFO L471 AbstractCegarLoop]: Abstraction has 2301 states and 3063 transitions. [2024-11-27 19:50:48,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 193 states, 193 states have (on average 7.922279792746114) internal successors, (1529), 193 states have internal predecessors, (1529), 190 states have call successors, (760), 1 states have call predecessors, (760), 1 states have return successors, (760), 190 states have call predecessors, (760), 190 states have call successors, (760) [2024-11-27 19:50:48,654 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 3063 transitions. [2024-11-27 19:50:48,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4587 [2024-11-27 19:50:48,783 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:50:48,784 INFO L218 NwaCegarLoop]: trace histogram [382, 382, 382, 382, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 190, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:50:48,801 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-27 19:50:48,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:50:48,985 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:50:48,986 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:50:48,986 INFO L85 PathProgramCache]: Analyzing trace with hash -1654704566, now seen corresponding path program 7 times [2024-11-27 19:50:48,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:50:48,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932766356] [2024-11-27 19:50:48,987 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 19:50:48,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:50:49,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:15,525 INFO L134 CoverageAnalysis]: Checked inductivity of 652276 backedges. 0 proven. 215650 refuted. 0 times theorem prover too weak. 436626 trivial. 0 not checked. [2024-11-27 19:54:15,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 19:54:15,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932766356] [2024-11-27 19:54:15,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932766356] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 19:54:15,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064457638] [2024-11-27 19:54:15,526 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-27 19:54:15,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:54:15,526 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 19:54:15,528 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 19:54:15,530 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-27 19:54:17,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 19:54:17,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 9576 conjuncts, 192 conjuncts are in the unsatisfiable core [2024-11-27 19:54:17,714 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 19:54:21,273 INFO L134 CoverageAnalysis]: Checked inductivity of 652276 backedges. 0 proven. 215650 refuted. 0 times theorem prover too weak. 436626 trivial. 0 not checked. [2024-11-27 19:54:21,273 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 19:55:18,997 INFO L134 CoverageAnalysis]: Checked inductivity of 652276 backedges. 0 proven. 215650 refuted. 0 times theorem prover too weak. 436626 trivial. 0 not checked. [2024-11-27 19:55:18,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064457638] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-27 19:55:18,998 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-27 19:55:18,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [193, 193, 193] total 385 [2024-11-27 19:55:18,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798777759] [2024-11-27 19:55:18,999 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-27 19:55:19,008 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 385 states [2024-11-27 19:55:19,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 19:55:19,041 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 385 interpolants. [2024-11-27 19:55:19,064 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2024-11-27 19:55:19,070 INFO L87 Difference]: Start difference. First operand 2301 states and 3063 transitions. Second operand has 385 states, 385 states have (on average 7.961038961038961) internal successors, (3065), 385 states have internal predecessors, (3065), 382 states have call successors, (1528), 1 states have call predecessors, (1528), 1 states have return successors, (1528), 382 states have call predecessors, (1528), 382 states have call successors, (1528) [2024-11-27 19:55:48,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-27 19:55:48,394 INFO L93 Difference]: Finished difference Result 4609 states and 6330 transitions. [2024-11-27 19:55:48,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 384 states. [2024-11-27 19:55:48,397 INFO L78 Accepts]: Start accepts. Automaton has has 385 states, 385 states have (on average 7.961038961038961) internal successors, (3065), 385 states have internal predecessors, (3065), 382 states have call successors, (1528), 1 states have call predecessors, (1528), 1 states have return successors, (1528), 382 states have call predecessors, (1528), 382 states have call successors, (1528) Word has length 4586 [2024-11-27 19:55:48,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-27 19:55:48,437 INFO L225 Difference]: With dead ends: 4609 [2024-11-27 19:55:48,437 INFO L226 Difference]: Without dead ends: 4605 [2024-11-27 19:55:48,455 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 9363 GetRequests, 8980 SyntacticMatches, 0 SemanticMatches, 383 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 760 ImplicationChecksByTransitivity, 69.0s TimeCoverageRelationStatistics Valid=73920, Invalid=73920, Unknown=0, NotChecked=0, Total=147840 [2024-11-27 19:55:48,456 INFO L435 NwaCegarLoop]: 36 mSDtfsCounter, 14 mSDsluCounter, 2516 mSDsCounter, 0 mSdLazyCounter, 2309 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 2311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 2309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2024-11-27 19:55:48,456 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 2552 Invalid, 2311 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2 Valid, 2309 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2024-11-27 19:55:48,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4605 states. [2024-11-27 19:55:48,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4605 to 4605. [2024-11-27 19:55:48,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4605 states, 3070 states have (on average 1.0003257328990227) internal successors, (3071), 3070 states have internal predecessors, (3071), 1532 states have call successors, (1532), 2 states have call predecessors, (1532), 2 states have return successors, (1532), 1532 states have call predecessors, (1532), 1532 states have call successors, (1532) [2024-11-27 19:55:48,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4605 states to 4605 states and 6135 transitions. [2024-11-27 19:55:48,709 INFO L78 Accepts]: Start accepts. Automaton has 4605 states and 6135 transitions. Word has length 4586 [2024-11-27 19:55:48,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-27 19:55:48,716 INFO L471 AbstractCegarLoop]: Abstraction has 4605 states and 6135 transitions. [2024-11-27 19:55:48,720 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 385 states, 385 states have (on average 7.961038961038961) internal successors, (3065), 385 states have internal predecessors, (3065), 382 states have call successors, (1528), 1 states have call predecessors, (1528), 1 states have return successors, (1528), 382 states have call predecessors, (1528), 382 states have call successors, (1528) [2024-11-27 19:55:48,720 INFO L276 IsEmpty]: Start isEmpty. Operand 4605 states and 6135 transitions. [2024-11-27 19:55:49,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9195 [2024-11-27 19:55:49,242 INFO L210 NwaCegarLoop]: Found error trace [2024-11-27 19:55:49,243 INFO L218 NwaCegarLoop]: trace histogram [766, 766, 766, 766, 382, 382, 382, 382, 382, 382, 382, 382, 382, 382, 382, 382, 382, 382, 382, 382, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-27 19:55:49,262 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-27 19:55:49,444 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4102795f-7677-476e-a817-cba29e7ef7e8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 19:55:49,445 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-27 19:55:49,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 19:55:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash 2114504138, now seen corresponding path program 8 times [2024-11-27 19:55:49,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 19:55:49,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458359614] [2024-11-27 19:55:49,449 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 19:55:49,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 19:55:51,066 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 19:55:51,067 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat