./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound2.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_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/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_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/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_6eace52f-0b3a-45a6-ba4d-19160c8930a8/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 5211c9fa82ede95ab74fc9c54718f437923c350e1c105ec6d7fa45c8b49537a3 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:25:10,609 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:25:10,691 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:25:10,697 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:25:10,698 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:25:10,740 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:25:10,741 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:25:10,741 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:25:10,741 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:25:10,741 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:25:10,741 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:25:10,744 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:25:10,744 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:25:10,745 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:25:10,746 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:25:10,747 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:25:10,747 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:25:10,747 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:25:10,747 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:25:10,747 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:25:10,747 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:25:10,748 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:25:10,748 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:25:10,748 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:25:10,749 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:25:10,749 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:25:10,749 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:25:10,749 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:25:10,749 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:25:10,749 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:25:10,749 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:25:10,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:25:10,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:25:10,750 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:25:10,750 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:25:10,750 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:25:10,750 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:25:10,750 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:25:10,750 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:25:10,750 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:25:10,750 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:25:10,751 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:25:10,751 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:25:10,751 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:25:10,751 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:25:10,751 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:25:10,751 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:25:10,751 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:25:10,751 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_6eace52f-0b3a-45a6-ba4d-19160c8930a8/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 -> 5211c9fa82ede95ab74fc9c54718f437923c350e1c105ec6d7fa45c8b49537a3 [2024-11-28 02:25:11,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:25:11,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:25:11,157 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:25:11,159 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:25:11,159 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:25:11,161 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound2.c [2024-11-28 02:25:14,142 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/data/153b79cbe/1f61e0618ce8400f89c8bfa1fe12701e/FLAG29024aeb5 [2024-11-28 02:25:14,362 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:25:14,362 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound2.c [2024-11-28 02:25:14,374 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/data/153b79cbe/1f61e0618ce8400f89c8bfa1fe12701e/FLAG29024aeb5 [2024-11-28 02:25:14,396 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/data/153b79cbe/1f61e0618ce8400f89c8bfa1fe12701e [2024-11-28 02:25:14,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:25:14,401 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:25:14,403 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:25:14,404 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:25:14,408 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:25:14,409 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:25:14" (1/1) ... [2024-11-28 02:25:14,410 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@53fe699e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14, skipping insertion in model container [2024-11-28 02:25:14,412 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:25:14" (1/1) ... [2024-11-28 02:25:14,428 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:25:14,580 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_6eace52f-0b3a-45a6-ba4d-19160c8930a8/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound2.c[454,467] [2024-11-28 02:25:14,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:25:14,609 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:25:14,620 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_6eace52f-0b3a-45a6-ba4d-19160c8930a8/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_valuebound2.c[454,467] [2024-11-28 02:25:14,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:25:14,645 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:25:14,646 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14 WrapperNode [2024-11-28 02:25:14,647 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:25:14,649 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:25:14,649 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:25:14,649 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:25:14,658 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14" (1/1) ... [2024-11-28 02:25:14,664 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14" (1/1) ... [2024-11-28 02:25:14,688 INFO L138 Inliner]: procedures = 14, calls = 10, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2024-11-28 02:25:14,688 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:25:14,689 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:25:14,689 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:25:14,690 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:25:14,699 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14" (1/1) ... [2024-11-28 02:25:14,699 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14" (1/1) ... [2024-11-28 02:25:14,700 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14" (1/1) ... [2024-11-28 02:25:14,712 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]. [2024-11-28 02:25:14,712 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14" (1/1) ... [2024-11-28 02:25:14,712 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14" (1/1) ... [2024-11-28 02:25:14,715 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14" (1/1) ... [2024-11-28 02:25:14,720 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14" (1/1) ... [2024-11-28 02:25:14,723 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14" (1/1) ... [2024-11-28 02:25:14,725 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14" (1/1) ... [2024-11-28 02:25:14,726 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14" (1/1) ... [2024-11-28 02:25:14,731 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:25:14,731 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:25:14,731 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:25:14,732 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:25:14,732 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14" (1/1) ... [2024-11-28 02:25:14,742 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:25:14,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:14,771 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:25:14,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:25:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:25:14,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:25:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:25:14,807 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:25:14,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:25:14,807 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:25:14,885 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:25:14,888 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:25:15,031 INFO L? ?]: Removed 8 outVars from TransFormulas that were not future-live. [2024-11-28 02:25:15,031 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:25:15,041 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:25:15,041 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-28 02:25:15,042 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:25:15 BoogieIcfgContainer [2024-11-28 02:25:15,042 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:25:15,045 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:25:15,045 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:25:15,052 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:25:15,052 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:25:14" (1/3) ... [2024-11-28 02:25:15,053 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c13ba49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:25:15, skipping insertion in model container [2024-11-28 02:25:15,053 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:25:14" (2/3) ... [2024-11-28 02:25:15,057 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c13ba49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:25:15, skipping insertion in model container [2024-11-28 02:25:15,057 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:25:15" (3/3) ... [2024-11-28 02:25:15,059 INFO L128 eAbstractionObserver]: Analyzing ICFG ps2-ll_valuebound2.c [2024-11-28 02:25:15,076 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:25:15,078 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ps2-ll_valuebound2.c that has 2 procedures, 17 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:25:15,133 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:25:15,149 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;@3f6c3308, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:25:15,149 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:25:15,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:25:15,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 02:25:15,161 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:25:15,162 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:15,162 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:25:15,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:15,169 INFO L85 PathProgramCache]: Analyzing trace with hash 120323230, now seen corresponding path program 1 times [2024-11-28 02:25:15,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:15,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235259586] [2024-11-28 02:25:15,179 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:25:15,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:15,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:25:15,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:15,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:15,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235259586] [2024-11-28 02:25:15,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235259586] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:25:15,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:25:15,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:25:15,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278393661] [2024-11-28 02:25:15,367 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:25:15,371 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:25:15,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:15,398 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:25:15,399 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:25:15,401 INFO L87 Difference]: Start difference. First operand has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 13 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:15,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:25:15,418 INFO L93 Difference]: Finished difference Result 31 states and 42 transitions. [2024-11-28 02:25:15,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:25:15,420 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 02:25:15,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:25:15,427 INFO L225 Difference]: With dead ends: 31 [2024-11-28 02:25:15,427 INFO L226 Difference]: Without dead ends: 13 [2024-11-28 02:25:15,434 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:25:15,437 INFO L435 NwaCegarLoop]: 18 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:25:15,442 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:25:15,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-28 02:25:15,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-28 02:25:15,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:25:15,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2024-11-28 02:25:15,476 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 8 [2024-11-28 02:25:15,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:25:15,476 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2024-11-28 02:25:15,476 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.5) internal successors, (7), 2 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:15,476 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2024-11-28 02:25:15,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 02:25:15,477 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:25:15,477 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:15,477 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:25:15,477 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:25:15,478 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:15,478 INFO L85 PathProgramCache]: Analyzing trace with hash 177581532, now seen corresponding path program 1 times [2024-11-28 02:25:15,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:15,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035793606] [2024-11-28 02:25:15,478 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:25:15,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:15,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:25:15,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1489889797] [2024-11-28 02:25:15,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:25:15,505 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:15,506 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:15,508 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:15,509 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:25:15,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:25:15,560 INFO L256 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:25:15,565 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:15,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:15,656 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:25:15,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:15,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035793606] [2024-11-28 02:25:15,657 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:25:15,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1489889797] [2024-11-28 02:25:15,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1489889797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:25:15,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:25:15,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:25:15,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160635354] [2024-11-28 02:25:15,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:25:15,660 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:25:15,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:15,661 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:25:15,662 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:25:15,662 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:15,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:25:15,738 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2024-11-28 02:25:15,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:25:15,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-11-28 02:25:15,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:25:15,740 INFO L225 Difference]: With dead ends: 22 [2024-11-28 02:25:15,741 INFO L226 Difference]: Without dead ends: 19 [2024-11-28 02:25:15,741 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 02:25:15,742 INFO L435 NwaCegarLoop]: 10 mSDtfsCounter, 4 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:25:15,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 37 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:25:15,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2024-11-28 02:25:15,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2024-11-28 02:25:15,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:25:15,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2024-11-28 02:25:15,749 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 8 [2024-11-28 02:25:15,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:25:15,749 INFO L471 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2024-11-28 02:25:15,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:15,750 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2024-11-28 02:25:15,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-28 02:25:15,750 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:25:15,752 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:25:15,761 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:25:15,952 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:15,953 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:25:15,953 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:25:15,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1863139806, now seen corresponding path program 1 times [2024-11-28 02:25:15,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:25:15,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515064577] [2024-11-28 02:25:15,953 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:25:15,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:25:15,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:25:15,983 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [776818342] [2024-11-28 02:25:15,983 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:25:15,983 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:15,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:25:15,986 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:25:15,990 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:25:16,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:25:16,037 INFO L256 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-28 02:25:16,039 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:25:16,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:25:16,144 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:25:16,260 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 02:25:16,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:25:16,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515064577] [2024-11-28 02:25:16,260 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:25:16,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776818342] [2024-11-28 02:25:16,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [776818342] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 02:25:16,261 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-28 02:25:16,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2024-11-28 02:25:16,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1047563263] [2024-11-28 02:25:16,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:25:16,261 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:25:16,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:25:16,264 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:25:16,264 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 02:25:16,264 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:25:16,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:25:16,325 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2024-11-28 02:25:16,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:25:16,327 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-28 02:25:16,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:25:16,327 INFO L225 Difference]: With dead ends: 19 [2024-11-28 02:25:16,328 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 02:25:16,328 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-28 02:25:16,329 INFO L435 NwaCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:25:16,329 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 26 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:25:16,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 02:25:16,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 02:25:16,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 02:25:16,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 02:25:16,333 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2024-11-28 02:25:16,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:25:16,333 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 02:25:16,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-28 02:25:16,334 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 02:25:16,334 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 02:25:16,337 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 02:25:16,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:25:16,538 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:25:16,541 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-28 02:25:16,543 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 02:25:16,610 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:25:16,630 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:25:16 BoogieIcfgContainer [2024-11-28 02:25:16,630 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:25:16,631 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:25:16,631 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:25:16,631 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:25:16,632 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:25:15" (3/4) ... [2024-11-28 02:25:16,635 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:25:16,639 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-28 02:25:16,643 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2024-11-28 02:25:16,644 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 02:25:16,644 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:25:16,644 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 02:25:16,731 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:25:16,732 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:25:16,732 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:25:16,734 INFO L158 Benchmark]: Toolchain (without parser) took 2331.74ms. Allocated memory is still 117.4MB. Free memory was 93.2MB in the beginning and 76.3MB in the end (delta: 16.9MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2024-11-28 02:25:16,734 INFO L158 Benchmark]: CDTParser took 0.45ms. Allocated memory is still 117.4MB. Free memory is still 73.5MB. There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:25:16,734 INFO L158 Benchmark]: CACSL2BoogieTranslator took 244.72ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 82.1MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:25:16,734 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.25ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 80.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:25:16,735 INFO L158 Benchmark]: Boogie Preprocessor took 41.49ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 79.7MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:25:16,735 INFO L158 Benchmark]: RCFGBuilder took 311.23ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 70.4MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:25:16,735 INFO L158 Benchmark]: TraceAbstraction took 1585.34ms. Allocated memory is still 117.4MB. Free memory was 69.8MB in the beginning and 80.5MB in the end (delta: -10.7MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:25:16,735 INFO L158 Benchmark]: Witness Printer took 100.90ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 76.3MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:25:16,738 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45ms. Allocated memory is still 117.4MB. Free memory is still 73.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 244.72ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 82.1MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.25ms. Allocated memory is still 117.4MB. Free memory was 82.1MB in the beginning and 80.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 41.49ms. Allocated memory is still 117.4MB. Free memory was 80.9MB in the beginning and 79.7MB in the end (delta: 1.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 311.23ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 70.4MB in the end (delta: 9.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1585.34ms. Allocated memory is still 117.4MB. Free memory was 69.8MB in the beginning and 80.5MB in the end (delta: -10.7MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 100.90ms. Allocated memory is still 117.4MB. Free memory was 80.5MB in the beginning and 76.3MB in the end (delta: 4.2MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 12]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.4s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 81 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30 IncrementalHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 36 mSDtfsCounter, 30 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 100 SizeOfPredicates, 2 NumberOfNonLiveVariables, 102 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 5/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: (((__int128) 2 * x) == (y + ((__int128) y * y))) RESULT: Ultimate proved your program to be correct! [2024-11-28 02:25:16,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6eace52f-0b3a-45a6-ba4d-19160c8930a8/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE