./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound2.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_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/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_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/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_cbd92893-1cff-41f1-8fee-976952af9ee3/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 68a1d90e377c3311d76daf952c7a82207c21975afd6ee262fe642de3486ccf46 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 02:47:04,660 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 02:47:04,743 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 02:47:04,749 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 02:47:04,749 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 02:47:04,785 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 02:47:04,785 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 02:47:04,785 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 02:47:04,786 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 02:47:04,786 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 02:47:04,786 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 02:47:04,786 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 02:47:04,786 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 02:47:04,786 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 02:47:04,787 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 02:47:04,787 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 02:47:04,787 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 02:47:04,787 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 02:47:04,787 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 02:47:04,787 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 02:47:04,787 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 02:47:04,787 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 02:47:04,787 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 02:47:04,788 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 02:47:04,788 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 02:47:04,790 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 02:47:04,790 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 02:47:04,790 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 02:47:04,790 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 02:47:04,791 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:47:04,791 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:47:04,791 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:47:04,791 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:47:04,792 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 02:47:04,792 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 02:47:04,792 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 02:47:04,792 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 02:47:04,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:47:04,792 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 02:47:04,792 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 02:47:04,792 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 02:47:04,792 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 02:47:04,792 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 02:47:04,792 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 02:47:04,793 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 02:47:04,793 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 02:47:04,793 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 02:47:04,793 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 02:47:04,793 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_cbd92893-1cff-41f1-8fee-976952af9ee3/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 -> 68a1d90e377c3311d76daf952c7a82207c21975afd6ee262fe642de3486ccf46 [2024-11-28 02:47:05,082 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 02:47:05,090 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 02:47:05,096 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 02:47:05,097 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 02:47:05,098 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 02:47:05,100 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound2.c [2024-11-28 02:47:08,165 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/data/3843a1f64/cec14fd61cd24ab6bc83da8cb20b1486/FLAG92ad56fa5 [2024-11-28 02:47:08,397 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 02:47:08,398 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound2.c [2024-11-28 02:47:08,405 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/data/3843a1f64/cec14fd61cd24ab6bc83da8cb20b1486/FLAG92ad56fa5 [2024-11-28 02:47:08,723 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/data/3843a1f64/cec14fd61cd24ab6bc83da8cb20b1486 [2024-11-28 02:47:08,725 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 02:47:08,727 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 02:47:08,728 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 02:47:08,729 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 02:47:08,733 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 02:47:08,734 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:47:08" (1/1) ... [2024-11-28 02:47:08,735 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c1acce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08, skipping insertion in model container [2024-11-28 02:47:08,735 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:47:08" (1/1) ... [2024-11-28 02:47:08,748 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 02:47:08,878 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_cbd92893-1cff-41f1-8fee-976952af9ee3/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound2.c[454,467] [2024-11-28 02:47:08,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:47:08,906 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 02:47:08,918 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_cbd92893-1cff-41f1-8fee-976952af9ee3/sv-benchmarks/c/nla-digbench-scaling/ps2-ll_unwindbound2.c[454,467] [2024-11-28 02:47:08,926 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 02:47:08,939 INFO L204 MainTranslator]: Completed translation [2024-11-28 02:47:08,939 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08 WrapperNode [2024-11-28 02:47:08,939 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 02:47:08,940 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 02:47:08,941 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 02:47:08,941 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 02:47:08,947 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08" (1/1) ... [2024-11-28 02:47:08,953 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08" (1/1) ... [2024-11-28 02:47:08,968 INFO L138 Inliner]: procedures = 14, calls = 9, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 37 [2024-11-28 02:47:08,968 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 02:47:08,969 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 02:47:08,969 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 02:47:08,969 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 02:47:08,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08" (1/1) ... [2024-11-28 02:47:08,978 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08" (1/1) ... [2024-11-28 02:47:08,979 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08" (1/1) ... [2024-11-28 02:47:08,989 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 02:47:08,989 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08" (1/1) ... [2024-11-28 02:47:08,989 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08" (1/1) ... [2024-11-28 02:47:08,992 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08" (1/1) ... [2024-11-28 02:47:08,992 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08" (1/1) ... [2024-11-28 02:47:08,997 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08" (1/1) ... [2024-11-28 02:47:08,998 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08" (1/1) ... [2024-11-28 02:47:08,998 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08" (1/1) ... [2024-11-28 02:47:09,001 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 02:47:09,005 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 02:47:09,006 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 02:47:09,006 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 02:47:09,007 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08" (1/1) ... [2024-11-28 02:47:09,017 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 02:47:09,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:09,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 02:47:09,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 02:47:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 02:47:09,080 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 02:47:09,081 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 02:47:09,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 02:47:09,081 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-28 02:47:09,081 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-28 02:47:09,149 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 02:47:09,153 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 02:47:09,278 INFO L? ?]: Removed 6 outVars from TransFormulas that were not future-live. [2024-11-28 02:47:09,279 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 02:47:09,290 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 02:47:09,290 INFO L312 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-28 02:47:09,291 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:47:09 BoogieIcfgContainer [2024-11-28 02:47:09,292 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 02:47:09,294 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 02:47:09,294 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 02:47:09,300 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 02:47:09,300 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 02:47:08" (1/3) ... [2024-11-28 02:47:09,301 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e63ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:47:09, skipping insertion in model container [2024-11-28 02:47:09,301 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:47:08" (2/3) ... [2024-11-28 02:47:09,302 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@44e63ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 02:47:09, skipping insertion in model container [2024-11-28 02:47:09,302 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:47:09" (3/3) ... [2024-11-28 02:47:09,303 INFO L128 eAbstractionObserver]: Analyzing ICFG ps2-ll_unwindbound2.c [2024-11-28 02:47:09,320 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 02:47:09,321 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG ps2-ll_unwindbound2.c that has 2 procedures, 17 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-11-28 02:47:09,390 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 02:47:09,407 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;@3780c85c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 02:47:09,407 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-28 02:47:09,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:47:09,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-28 02:47:09,423 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:09,424 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:09,424 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:09,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:09,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1819757606, now seen corresponding path program 1 times [2024-11-28 02:47:09,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:09,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624064798] [2024-11-28 02:47:09,438 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:09,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:09,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:09,558 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 02:47:09,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:09,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624064798] [2024-11-28 02:47:09,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624064798] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:09,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:09,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 02:47:09,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763471757] [2024-11-28 02:47:09,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:09,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-28 02:47:09,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:09,585 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-28 02:47:09,585 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-28 02:47:09,587 INFO L87 Difference]: Start difference. First operand has 17 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 02:47:09,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:09,603 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2024-11-28 02:47:09,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-28 02:47:09,605 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 7 [2024-11-28 02:47:09,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:09,611 INFO L225 Difference]: With dead ends: 32 [2024-11-28 02:47:09,611 INFO L226 Difference]: Without dead ends: 13 [2024-11-28 02:47:09,614 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 02:47:09,617 INFO L435 NwaCegarLoop]: 19 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, 19 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 02:47:09,618 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:47:09,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2024-11-28 02:47:09,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2024-11-28 02:47:09,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 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 02:47:09,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 15 transitions. [2024-11-28 02:47:09,649 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 15 transitions. Word has length 7 [2024-11-28 02:47:09,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:09,649 INFO L471 AbstractCegarLoop]: Abstraction has 13 states and 15 transitions. [2024-11-28 02:47:09,649 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 02:47:09,649 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 15 transitions. [2024-11-28 02:47:09,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-28 02:47:09,650 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:09,650 INFO L218 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:09,650 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 02:47:09,650 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:09,651 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:09,651 INFO L85 PathProgramCache]: Analyzing trace with hash 148798461, now seen corresponding path program 1 times [2024-11-28 02:47:09,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:09,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048402710] [2024-11-28 02:47:09,651 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:09,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:09,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:47:09,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [603125562] [2024-11-28 02:47:09,681 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:09,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:09,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:09,683 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:09,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 02:47:09,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:09,732 INFO L256 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 7 conjuncts are in the unsatisfiable core [2024-11-28 02:47:09,736 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:09,851 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 02:47:09,851 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-28 02:47:09,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:09,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048402710] [2024-11-28 02:47:09,852 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:47:09,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [603125562] [2024-11-28 02:47:09,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [603125562] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 02:47:09,853 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 02:47:09,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 02:47:09,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857648445] [2024-11-28 02:47:09,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 02:47:09,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 02:47:09,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:09,855 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 02:47:09,855 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-28 02:47:09,855 INFO L87 Difference]: Start difference. First operand 13 states and 15 transitions. Second operand has 5 states, 5 states have (on average 1.4) 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 02:47:09,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:09,910 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2024-11-28 02:47:09,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 02:47:09,911 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.4) 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 02:47:09,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:09,912 INFO L225 Difference]: With dead ends: 24 [2024-11-28 02:47:09,912 INFO L226 Difference]: Without dead ends: 21 [2024-11-28 02:47:09,912 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 02:47:09,913 INFO L435 NwaCegarLoop]: 11 mSDtfsCounter, 5 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:09,915 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 42 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-28 02:47:09,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2024-11-28 02:47:09,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2024-11-28 02:47:09,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 15 states have (on average 1.2) internal successors, (18), 16 states have internal predecessors, (18), 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 02:47:09,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2024-11-28 02:47:09,925 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 8 [2024-11-28 02:47:09,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:09,926 INFO L471 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2024-11-28 02:47:09,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.4) 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 02:47:09,926 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2024-11-28 02:47:09,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-28 02:47:09,927 INFO L210 NwaCegarLoop]: Found error trace [2024-11-28 02:47:09,927 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 02:47:09,935 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-28 02:47:10,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2024-11-28 02:47:10,128 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-28 02:47:10,128 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 02:47:10,128 INFO L85 PathProgramCache]: Analyzing trace with hash -186243422, now seen corresponding path program 1 times [2024-11-28 02:47:10,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 02:47:10,129 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553365737] [2024-11-28 02:47:10,129 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:10,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 02:47:10,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-28 02:47:10,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1022664504] [2024-11-28 02:47:10,158 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 02:47:10,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:10,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 02:47:10,162 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 02:47:10,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 02:47:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 02:47:10,241 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-28 02:47:10,244 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 02:47:10,430 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:10,431 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 02:47:10,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 02:47:10,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 02:47:10,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553365737] [2024-11-28 02:47:10,608 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-28 02:47:10,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022664504] [2024-11-28 02:47:10,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022664504] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 02:47:10,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-28 02:47:10,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 11 [2024-11-28 02:47:10,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893310174] [2024-11-28 02:47:10,610 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-28 02:47:10,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-28 02:47:10,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 02:47:10,613 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-28 02:47:10,614 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-11-28 02:47:10,614 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:47:10,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-28 02:47:10,716 INFO L93 Difference]: Finished difference Result 26 states and 31 transitions. [2024-11-28 02:47:10,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 02:47:10,716 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2024-11-28 02:47:10,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-28 02:47:10,717 INFO L225 Difference]: With dead ends: 26 [2024-11-28 02:47:10,717 INFO L226 Difference]: Without dead ends: 0 [2024-11-28 02:47:10,718 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-28 02:47:10,718 INFO L435 NwaCegarLoop]: 12 mSDtfsCounter, 8 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 71 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-28 02:47:10,719 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 71 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-28 02:47:10,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-11-28 02:47:10,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-11-28 02:47:10,720 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 02:47:10,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-11-28 02:47:10,720 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2024-11-28 02:47:10,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-28 02:47:10,720 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-11-28 02:47:10,721 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.090909090909091) internal successors, (23), 10 states have internal predecessors, (23), 4 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-28 02:47:10,721 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-11-28 02:47:10,721 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-11-28 02:47:10,723 INFO L782 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2024-11-28 02:47:10,735 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 02:47:10,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 02:47:10,929 INFO L422 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2024-11-28 02:47:10,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2024-11-28 02:47:11,013 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-11-28 02:47:11,031 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 02:47:11 BoogieIcfgContainer [2024-11-28 02:47:11,032 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-11-28 02:47:11,032 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-11-28 02:47:11,032 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-11-28 02:47:11,032 INFO L274 PluginConnector]: Witness Printer initialized [2024-11-28 02:47:11,033 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:47:09" (3/4) ... [2024-11-28 02:47:11,035 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-11-28 02:47:11,039 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2024-11-28 02:47:11,042 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2024-11-28 02:47:11,042 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2024-11-28 02:47:11,042 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-11-28 02:47:11,042 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-11-28 02:47:11,118 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/witness.graphml [2024-11-28 02:47:11,118 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/witness.yml [2024-11-28 02:47:11,118 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-11-28 02:47:11,119 INFO L158 Benchmark]: Toolchain (without parser) took 2392.07ms. Allocated memory is still 117.4MB. Free memory was 93.0MB in the beginning and 64.7MB in the end (delta: 28.4MB). Peak memory consumption was 29.6MB. Max. memory is 16.1GB. [2024-11-28 02:47:11,119 INFO L158 Benchmark]: CDTParser took 0.59ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 72.8MB in the end (delta: 84.2kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:47:11,119 INFO L158 Benchmark]: CACSL2BoogieTranslator took 211.32ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 81.9MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:47:11,120 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.79ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 80.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:47:11,120 INFO L158 Benchmark]: Boogie Preprocessor took 36.07ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 79.7MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:47:11,120 INFO L158 Benchmark]: RCFGBuilder took 286.19ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 70.2MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:47:11,121 INFO L158 Benchmark]: TraceAbstraction took 1737.46ms. Allocated memory is still 117.4MB. Free memory was 69.6MB in the beginning and 69.5MB in the end (delta: 160.6kB). There was no memory consumed. Max. memory is 16.1GB. [2024-11-28 02:47:11,121 INFO L158 Benchmark]: Witness Printer took 86.01ms. Allocated memory is still 117.4MB. Free memory was 69.5MB in the beginning and 64.7MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-11-28 02:47:11,123 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59ms. Allocated memory is still 117.4MB. Free memory was 72.9MB in the beginning and 72.8MB in the end (delta: 84.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 211.32ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 81.9MB in the end (delta: 10.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.79ms. Allocated memory is still 117.4MB. Free memory was 81.9MB in the beginning and 80.8MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 36.07ms. Allocated memory is still 117.4MB. Free memory was 80.8MB in the beginning and 79.7MB in the end (delta: 1.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * RCFGBuilder took 286.19ms. Allocated memory is still 117.4MB. Free memory was 79.7MB in the beginning and 70.2MB in the end (delta: 9.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 1737.46ms. Allocated memory is still 117.4MB. Free memory was 69.6MB in the beginning and 69.5MB in the end (delta: 160.6kB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 86.01ms. Allocated memory is still 117.4MB. Free memory was 69.5MB in the beginning and 64.7MB in the end (delta: 4.8MB). Peak memory consumption was 8.4MB. 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: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 15 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 132 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 90 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 55 IncrementalHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 42 mSDtfsCounter, 55 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=2, InterpolantAutomatonStates: 14, 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, 0.5s InterpolantComputationTime, 55 NumberOfCodeBlocks, 55 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 43 ConstructedInterpolants, 0 QuantifiedInterpolants, 170 SizeOfPredicates, 2 NumberOfNonLiveVariables, 111 ConjunctsInSsa, 26 ConjunctsInUnsatCore, 4 InterpolantComputations, 2 PerfectInterpolantSequences, 5/10 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 02:47:11,142 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_cbd92893-1cff-41f1-8fee-976952af9ee3/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE