./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/float-benchs/Muller_Kahan.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/Muller_Kahan.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme --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 61ce2c272542663cace3442e405f7ab093d2a72e636da199b8b44596c79af6c9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:47:03,666 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:47:03,778 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:47:03,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:47:03,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:47:03,829 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:47:03,831 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:47:03,832 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:47:03,833 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:47:03,838 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:47:03,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:47:03,839 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:47:03,840 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:47:03,842 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:47:03,842 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:47:03,843 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:47:03,843 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:47:03,844 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:47:03,844 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:47:03,844 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:47:03,845 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:47:03,846 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:47:03,846 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:47:03,846 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:47:03,847 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:47:03,847 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:47:03,848 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:47:03,848 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:47:03,849 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:47:03,849 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:47:03,850 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:47:03,851 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:03,851 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:47:03,851 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:47:03,852 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:47:03,852 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:47:03,852 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:47:03,852 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:47:03,852 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:47:03,853 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:47:03,853 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:47:03,853 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:47:03,854 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61ce2c272542663cace3442e405f7ab093d2a72e636da199b8b44596c79af6c9 [2023-11-26 11:47:04,114 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:47:04,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:47:04,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:47:04,147 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:47:04,147 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:47:04,149 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/float-benchs/Muller_Kahan.c [2023-11-26 11:47:07,239 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:47:07,464 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:47:07,464 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/sv-benchmarks/c/float-benchs/Muller_Kahan.c [2023-11-26 11:47:07,473 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/data/744d213f0/fee02eb7078646fe998dea52ddc38d99/FLAGf8ba98240 [2023-11-26 11:47:07,488 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/data/744d213f0/fee02eb7078646fe998dea52ddc38d99 [2023-11-26 11:47:07,491 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:47:07,493 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:47:07,494 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:07,494 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:47:07,506 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:47:07,506 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:07" (1/1) ... [2023-11-26 11:47:07,508 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2843ffcb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:07, skipping insertion in model container [2023-11-26 11:47:07,508 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:07" (1/1) ... [2023-11-26 11:47:07,534 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:47:07,684 WARN L240 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_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/sv-benchmarks/c/float-benchs/Muller_Kahan.c[631,644] [2023-11-26 11:47:07,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:07,708 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:47:07,719 WARN L240 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_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/sv-benchmarks/c/float-benchs/Muller_Kahan.c[631,644] [2023-11-26 11:47:07,722 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:07,737 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:47:07,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:07 WrapperNode [2023-11-26 11:47:07,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:07,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:07,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:47:07,739 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:47:07,747 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:07" (1/1) ... [2023-11-26 11:47:07,754 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:07" (1/1) ... [2023-11-26 11:47:07,770 INFO L138 Inliner]: procedures = 12, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 35 [2023-11-26 11:47:07,770 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:07,771 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:47:07,771 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:47:07,771 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:47:07,779 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:07" (1/1) ... [2023-11-26 11:47:07,780 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:07" (1/1) ... [2023-11-26 11:47:07,781 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:07" (1/1) ... [2023-11-26 11:47:07,791 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]. [2023-11-26 11:47:07,791 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:07" (1/1) ... [2023-11-26 11:47:07,791 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:07" (1/1) ... [2023-11-26 11:47:07,795 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:07" (1/1) ... [2023-11-26 11:47:07,798 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:07" (1/1) ... [2023-11-26 11:47:07,799 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:07" (1/1) ... [2023-11-26 11:47:07,800 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:07" (1/1) ... [2023-11-26 11:47:07,802 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:47:07,803 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:47:07,803 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:47:07,803 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:47:07,804 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:07" (1/1) ... [2023-11-26 11:47:07,810 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:07,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:07,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:07,859 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:47:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:47:07,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:47:07,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:47:07,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:47:07,981 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:47:07,983 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:47:08,146 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:47:08,198 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:47:08,200 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:47:08,201 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:08 BoogieIcfgContainer [2023-11-26 11:47:08,201 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:47:08,206 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:47:08,206 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:47:08,209 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:47:08,210 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:47:07" (1/3) ... [2023-11-26 11:47:08,211 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cac7cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:08, skipping insertion in model container [2023-11-26 11:47:08,211 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:07" (2/3) ... [2023-11-26 11:47:08,212 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cac7cab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:08, skipping insertion in model container [2023-11-26 11:47:08,213 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:08" (3/3) ... [2023-11-26 11:47:08,214 INFO L112 eAbstractionObserver]: Analyzing ICFG Muller_Kahan.c [2023-11-26 11:47:08,235 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:47:08,236 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:47:08,297 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:47:08,306 INFO L357 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, mHoare=true, 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;@5194d4a5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:47:08,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:47:08,312 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2023-11-26 11:47:08,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 11:47:08,320 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:08,321 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:47:08,325 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:08,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:08,333 INFO L85 PathProgramCache]: Analyzing trace with hash 59359658, now seen corresponding path program 1 times [2023-11-26 11:47:08,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:08,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961891585] [2023-11-26 11:47:08,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:08,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:08,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:08,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:08,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961891585] [2023-11-26 11:47:08,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961891585] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:08,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:08,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:08,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651933765] [2023-11-26 11:47:08,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:08,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:08,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:08,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:08,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:08,580 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-26 11:47:08,605 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:08,605 INFO L93 Difference]: Finished difference Result 15 states and 19 transitions. [2023-11-26 11:47:08,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:47:08,608 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2023-11-26 11:47:08,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:08,615 INFO L225 Difference]: With dead ends: 15 [2023-11-26 11:47:08,616 INFO L226 Difference]: Without dead ends: 7 [2023-11-26 11:47:08,618 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:08,622 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 0 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:08,623 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 9 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:47:08,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2023-11-26 11:47:08,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2023-11-26 11:47:08,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 6 states have (on average 1.1666666666666667) internal successors, (7), 6 states have internal predecessors, (7), 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) [2023-11-26 11:47:08,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2023-11-26 11:47:08,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2023-11-26 11:47:08,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:08,655 INFO L495 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2023-11-26 11:47:08,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-26 11:47:08,655 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2023-11-26 11:47:08,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-11-26 11:47:08,656 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:08,656 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-11-26 11:47:08,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:47:08,657 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:08,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:08,657 INFO L85 PathProgramCache]: Analyzing trace with hash 1861149129, now seen corresponding path program 1 times [2023-11-26 11:47:08,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:08,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254692632] [2023-11-26 11:47:08,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:08,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:08,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:08,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:08,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:08,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254692632] [2023-11-26 11:47:08,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254692632] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:08,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [520920413] [2023-11-26 11:47:08,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:08,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:08,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:08,731 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:08,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:47:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:08,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:47:08,807 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:08,852 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:08,874 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:47:08,907 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:08,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [520920413] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:47:08,908 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:47:08,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-11-26 11:47:08,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458294494] [2023-11-26 11:47:08,909 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:47:08,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-26 11:47:08,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:08,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-26 11:47:08,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:47:08,911 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 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) [2023-11-26 11:47:08,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:08,953 INFO L93 Difference]: Finished difference Result 14 states and 16 transitions. [2023-11-26 11:47:08,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:47:08,954 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2023-11-26 11:47:08,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:08,955 INFO L225 Difference]: With dead ends: 14 [2023-11-26 11:47:08,955 INFO L226 Difference]: Without dead ends: 10 [2023-11-26 11:47:08,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:47:08,957 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:08,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 7 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:47:08,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2023-11-26 11:47:08,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2023-11-26 11:47:08,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 9 states have (on average 1.1111111111111112) internal successors, (10), 9 states have internal predecessors, (10), 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) [2023-11-26 11:47:08,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 10 transitions. [2023-11-26 11:47:08,963 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 10 transitions. Word has length 6 [2023-11-26 11:47:08,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:08,963 INFO L495 AbstractCegarLoop]: Abstraction has 10 states and 10 transitions. [2023-11-26 11:47:08,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.5714285714285714) internal successors, (11), 6 states have internal predecessors, (11), 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) [2023-11-26 11:47:08,964 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 10 transitions. [2023-11-26 11:47:08,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2023-11-26 11:47:08,964 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:08,965 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1] [2023-11-26 11:47:08,975 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:09,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2023-11-26 11:47:09,176 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:09,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:09,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1138774378, now seen corresponding path program 2 times [2023-11-26 11:47:09,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:09,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257587488] [2023-11-26 11:47:09,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:09,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:09,371 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:09,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:09,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257587488] [2023-11-26 11:47:09,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257587488] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:09,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456515634] [2023-11-26 11:47:09,372 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-11-26 11:47:09,373 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:09,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:09,375 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:09,400 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:47:09,456 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-11-26 11:47:09,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:47:09,458 INFO L262 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 6 conjunts are in the unsatisfiable core [2023-11-26 11:47:09,459 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:09,507 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:09,508 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:47:09,635 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:09,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1456515634] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:47:09,642 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:47:09,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-11-26 11:47:09,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136336006] [2023-11-26 11:47:09,642 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:47:09,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-11-26 11:47:09,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:09,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-11-26 11:47:09,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:47:09,645 INFO L87 Difference]: Start difference. First operand 10 states and 10 transitions. Second operand has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 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) [2023-11-26 11:47:09,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:09,694 INFO L93 Difference]: Finished difference Result 20 states and 25 transitions. [2023-11-26 11:47:09,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:47:09,695 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2023-11-26 11:47:09,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:09,696 INFO L225 Difference]: With dead ends: 20 [2023-11-26 11:47:09,696 INFO L226 Difference]: Without dead ends: 16 [2023-11-26 11:47:09,697 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2023-11-26 11:47:09,699 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:09,700 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:47:09,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2023-11-26 11:47:09,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2023-11-26 11:47:09,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 15 states have internal predecessors, (16), 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) [2023-11-26 11:47:09,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2023-11-26 11:47:09,706 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 9 [2023-11-26 11:47:09,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:09,707 INFO L495 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2023-11-26 11:47:09,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 1.3076923076923077) internal successors, (17), 12 states have internal predecessors, (17), 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) [2023-11-26 11:47:09,707 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2023-11-26 11:47:09,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2023-11-26 11:47:09,708 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:09,709 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1] [2023-11-26 11:47:09,726 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:09,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:09,915 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:09,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:09,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1689986314, now seen corresponding path program 3 times [2023-11-26 11:47:09,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:09,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424286725] [2023-11-26 11:47:09,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:09,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:09,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:10,266 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:10,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:10,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424286725] [2023-11-26 11:47:10,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424286725] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:10,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744030193] [2023-11-26 11:47:10,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-11-26 11:47:10,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:10,268 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:10,269 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:10,296 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:47:10,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-11-26 11:47:10,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:47:10,351 INFO L262 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 12 conjunts are in the unsatisfiable core [2023-11-26 11:47:10,353 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:10,423 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:10,423 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:47:10,691 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:10,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [744030193] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:47:10,692 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:47:10,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 12] total 24 [2023-11-26 11:47:10,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240620802] [2023-11-26 11:47:10,692 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:47:10,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2023-11-26 11:47:10,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:10,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2023-11-26 11:47:10,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-26 11:47:10,695 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 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) [2023-11-26 11:47:10,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:10,740 INFO L93 Difference]: Finished difference Result 32 states and 43 transitions. [2023-11-26 11:47:10,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-11-26 11:47:10,741 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2023-11-26 11:47:10,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:10,742 INFO L225 Difference]: With dead ends: 32 [2023-11-26 11:47:10,742 INFO L226 Difference]: Without dead ends: 28 [2023-11-26 11:47:10,743 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=300, Invalid=300, Unknown=0, NotChecked=0, Total=600 [2023-11-26 11:47:10,747 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:10,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-11-26 11:47:10,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2023-11-26 11:47:10,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2023-11-26 11:47:10,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 27 states have (on average 1.037037037037037) internal successors, (28), 27 states have internal predecessors, (28), 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) [2023-11-26 11:47:10,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2023-11-26 11:47:10,768 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 15 [2023-11-26 11:47:10,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:10,768 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2023-11-26 11:47:10,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 1.16) internal successors, (29), 24 states have internal predecessors, (29), 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) [2023-11-26 11:47:10,769 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2023-11-26 11:47:10,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-11-26 11:47:10,771 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:10,771 INFO L195 NwaCegarLoop]: trace histogram [22, 1, 1, 1, 1, 1] [2023-11-26 11:47:10,783 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:10,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:10,979 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:10,979 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:10,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2031410102, now seen corresponding path program 4 times [2023-11-26 11:47:10,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:10,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854952945] [2023-11-26 11:47:10,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:10,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:11,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:11,640 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:11,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:11,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854952945] [2023-11-26 11:47:11,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854952945] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:11,641 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314334218] [2023-11-26 11:47:11,641 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-11-26 11:47:11,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:11,641 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:11,649 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:11,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:47:11,749 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-11-26 11:47:11,750 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:47:11,751 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 24 conjunts are in the unsatisfiable core [2023-11-26 11:47:11,755 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:11,848 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:11,848 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:47:12,895 INFO L134 CoverageAnalysis]: Checked inductivity of 253 backedges. 0 proven. 253 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:12,896 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314334218] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:47:12,896 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:47:12,896 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 24, 24] total 48 [2023-11-26 11:47:12,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822325415] [2023-11-26 11:47:12,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:47:12,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2023-11-26 11:47:12,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:12,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2023-11-26 11:47:12,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-11-26 11:47:12,901 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 49 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 48 states have internal predecessors, (53), 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) [2023-11-26 11:47:12,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:12,997 INFO L93 Difference]: Finished difference Result 56 states and 79 transitions. [2023-11-26 11:47:12,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-11-26 11:47:12,997 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 48 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2023-11-26 11:47:12,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:12,999 INFO L225 Difference]: With dead ends: 56 [2023-11-26 11:47:12,999 INFO L226 Difference]: Without dead ends: 52 [2023-11-26 11:47:13,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1176, Invalid=1176, Unknown=0, NotChecked=0, Total=2352 [2023-11-26 11:47:13,002 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:13,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 19 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:47:13,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2023-11-26 11:47:13,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2023-11-26 11:47:13,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 51 states have (on average 1.0196078431372548) internal successors, (52), 51 states have internal predecessors, (52), 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) [2023-11-26 11:47:13,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2023-11-26 11:47:13,012 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 27 [2023-11-26 11:47:13,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:13,013 INFO L495 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2023-11-26 11:47:13,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 49 states have (on average 1.0816326530612246) internal successors, (53), 48 states have internal predecessors, (53), 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) [2023-11-26 11:47:13,013 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2023-11-26 11:47:13,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-26 11:47:13,015 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:13,015 INFO L195 NwaCegarLoop]: trace histogram [46, 1, 1, 1, 1, 1] [2023-11-26 11:47:13,028 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-11-26 11:47:13,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:13,221 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:13,221 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:13,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1825342154, now seen corresponding path program 5 times [2023-11-26 11:47:13,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:13,222 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [192231195] [2023-11-26 11:47:13,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:13,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:15,141 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:15,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:15,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [192231195] [2023-11-26 11:47:15,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [192231195] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:15,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [423386917] [2023-11-26 11:47:15,142 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-11-26 11:47:15,142 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:15,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:15,145 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:15,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-11-26 11:47:15,275 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 24 check-sat command(s) [2023-11-26 11:47:15,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:47:15,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 48 conjunts are in the unsatisfiable core [2023-11-26 11:47:15,283 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:15,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:15,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:47:18,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1081 backedges. 0 proven. 1081 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:18,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [423386917] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:47:18,891 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:47:18,891 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [48, 48, 48] total 96 [2023-11-26 11:47:18,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544689128] [2023-11-26 11:47:18,892 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:47:18,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 97 states [2023-11-26 11:47:18,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:18,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 97 interpolants. [2023-11-26 11:47:18,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-11-26 11:47:18,900 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 97 states, 97 states have (on average 1.041237113402062) internal successors, (101), 96 states have internal predecessors, (101), 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) [2023-11-26 11:47:19,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:19,117 INFO L93 Difference]: Finished difference Result 104 states and 151 transitions. [2023-11-26 11:47:19,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 96 states. [2023-11-26 11:47:19,118 INFO L78 Accepts]: Start accepts. Automaton has has 97 states, 97 states have (on average 1.041237113402062) internal successors, (101), 96 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2023-11-26 11:47:19,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:19,125 INFO L225 Difference]: With dead ends: 104 [2023-11-26 11:47:19,125 INFO L226 Difference]: Without dead ends: 100 [2023-11-26 11:47:19,129 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 148 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=4656, Invalid=4656, Unknown=0, NotChecked=0, Total=9312 [2023-11-26 11:47:19,130 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:19,131 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 13 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:47:19,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2023-11-26 11:47:19,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2023-11-26 11:47:19,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.0101010101010102) internal successors, (100), 99 states have internal predecessors, (100), 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) [2023-11-26 11:47:19,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2023-11-26 11:47:19,155 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 51 [2023-11-26 11:47:19,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:19,156 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2023-11-26 11:47:19,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 97 states, 97 states have (on average 1.041237113402062) internal successors, (101), 96 states have internal predecessors, (101), 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) [2023-11-26 11:47:19,156 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2023-11-26 11:47:19,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-26 11:47:19,161 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:19,161 INFO L195 NwaCegarLoop]: trace histogram [94, 1, 1, 1, 1, 1] [2023-11-26 11:47:19,173 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:19,368 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:19,368 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:19,369 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:19,369 INFO L85 PathProgramCache]: Analyzing trace with hash 1599389642, now seen corresponding path program 6 times [2023-11-26 11:47:19,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:19,369 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129040193] [2023-11-26 11:47:19,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:19,369 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:26,250 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:26,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:47:26,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129040193] [2023-11-26 11:47:26,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129040193] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:47:26,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2067695607] [2023-11-26 11:47:26,251 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-11-26 11:47:26,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:26,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:26,253 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:47:26,288 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-11-26 11:47:26,525 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 48 check-sat command(s) [2023-11-26 11:47:26,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-11-26 11:47:26,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 689 conjuncts, 96 conjunts are in the unsatisfiable core [2023-11-26 11:47:26,539 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:26,771 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:26,771 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-11-26 11:47:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 4465 backedges. 0 proven. 4465 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:31,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2067695607] provided 0 perfect and 2 imperfect interpolant sequences [2023-11-26 11:47:31,615 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-11-26 11:47:31,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [96, 96, 96] total 102 [2023-11-26 11:47:31,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304430494] [2023-11-26 11:47:31,616 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-11-26 11:47:31,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 103 states [2023-11-26 11:47:31,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:47:31,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 103 interpolants. [2023-11-26 11:47:31,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2023-11-26 11:47:31,625 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand has 103 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 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) [2023-11-26 11:47:31,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:47:31,832 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2023-11-26 11:47:31,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 102 states. [2023-11-26 11:47:31,835 INFO L78 Accepts]: Start accepts. Automaton has has 103 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 99 [2023-11-26 11:47:31,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:47:31,840 INFO L225 Difference]: With dead ends: 110 [2023-11-26 11:47:31,841 INFO L226 Difference]: Without dead ends: 106 [2023-11-26 11:47:31,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 292 GetRequests, 101 SyntacticMatches, 90 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4831 ImplicationChecksByTransitivity, 8.7s TimeCoverageRelationStatistics Valid=5253, Invalid=5253, Unknown=0, NotChecked=0, Total=10506 [2023-11-26 11:47:31,847 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:47:31,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 22 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:47:31,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-11-26 11:47:31,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 106. [2023-11-26 11:47:31,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 105 states have (on average 1.0095238095238095) internal successors, (106), 105 states have internal predecessors, (106), 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) [2023-11-26 11:47:31,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 106 transitions. [2023-11-26 11:47:31,873 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 106 transitions. Word has length 99 [2023-11-26 11:47:31,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:47:31,876 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 106 transitions. [2023-11-26 11:47:31,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 103 states, 103 states have (on average 1.0485436893203883) internal successors, (108), 102 states have internal predecessors, (108), 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) [2023-11-26 11:47:31,876 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 106 transitions. [2023-11-26 11:47:31,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-11-26 11:47:31,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:31,883 INFO L195 NwaCegarLoop]: trace histogram [100, 1, 1, 1, 1, 1] [2023-11-26 11:47:31,901 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-11-26 11:47:32,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:47:32,091 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:32,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:32,092 INFO L85 PathProgramCache]: Analyzing trace with hash -587510934, now seen corresponding path program 7 times [2023-11-26 11:47:32,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:47:32,092 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613165656] [2023-11-26 11:47:32,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:32,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:47:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:32,196 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-11-26 11:47:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-11-26 11:47:32,320 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-11-26 11:47:32,321 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-11-26 11:47:32,322 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2023-11-26 11:47:32,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:47:32,329 INFO L445 BasicCegarLoop]: Path program histogram: [7, 1] [2023-11-26 11:47:32,336 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-11-26 11:47:32,470 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.11 11:47:32 BoogieIcfgContainer [2023-11-26 11:47:32,471 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-11-26 11:47:32,471 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2023-11-26 11:47:32,472 INFO L270 PluginConnector]: Initializing Witness Printer... [2023-11-26 11:47:32,472 INFO L274 PluginConnector]: Witness Printer initialized [2023-11-26 11:47:32,472 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:08" (3/4) ... [2023-11-26 11:47:32,474 INFO L140 WitnessPrinter]: No result that supports witness generation found [2023-11-26 11:47:32,475 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2023-11-26 11:47:32,476 INFO L158 Benchmark]: Toolchain (without parser) took 24983.65ms. Allocated memory was 157.3MB in the beginning and 226.5MB in the end (delta: 69.2MB). Free memory was 111.8MB in the beginning and 122.5MB in the end (delta: -10.7MB). Peak memory consumption was 61.6MB. Max. memory is 16.1GB. [2023-11-26 11:47:32,476 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 157.3MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:47:32,477 INFO L158 Benchmark]: CACSL2BoogieTranslator took 243.97ms. Allocated memory is still 157.3MB. Free memory was 111.1MB in the beginning and 101.4MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2023-11-26 11:47:32,477 INFO L158 Benchmark]: Boogie Procedure Inliner took 31.24ms. Allocated memory is still 157.3MB. Free memory was 101.3MB in the beginning and 99.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:47:32,481 INFO L158 Benchmark]: Boogie Preprocessor took 31.33ms. Allocated memory is still 157.3MB. Free memory was 99.9MB in the beginning and 97.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2023-11-26 11:47:32,482 INFO L158 Benchmark]: RCFGBuilder took 398.56ms. Allocated memory is still 157.3MB. Free memory was 97.6MB in the beginning and 88.0MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2023-11-26 11:47:32,482 INFO L158 Benchmark]: TraceAbstraction took 24265.12ms. Allocated memory was 157.3MB in the beginning and 226.5MB in the end (delta: 69.2MB). Free memory was 86.7MB in the beginning and 123.5MB in the end (delta: -36.8MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. [2023-11-26 11:47:32,483 INFO L158 Benchmark]: Witness Printer took 4.31ms. Allocated memory is still 226.5MB. Free memory is still 122.5MB. There was no memory consumed. Max. memory is 16.1GB. [2023-11-26 11:47:32,485 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 157.3MB. Free memory is still 129.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 243.97ms. Allocated memory is still 157.3MB. Free memory was 111.1MB in the beginning and 101.4MB in the end (delta: 9.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 31.24ms. Allocated memory is still 157.3MB. Free memory was 101.3MB in the beginning and 99.9MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 31.33ms. Allocated memory is still 157.3MB. Free memory was 99.9MB in the beginning and 97.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 398.56ms. Allocated memory is still 157.3MB. Free memory was 97.6MB in the beginning and 88.0MB in the end (delta: 9.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 24265.12ms. Allocated memory was 157.3MB in the beginning and 226.5MB in the end (delta: 69.2MB). Free memory was 86.7MB in the beginning and 123.5MB in the end (delta: -36.8MB). Peak memory consumption was 36.5MB. Max. memory is 16.1GB. * Witness Printer took 4.31ms. Allocated memory is still 226.5MB. Free memory is still 122.5MB. 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 - UnprovableResult [Line: 12]: Unable to prove that a call to reach_error is unreachable Unable to prove that a call to reach_error is unreachable Reason: overapproximation of someBinaryDOUBLEComparisonOperation at line 27, overapproximation of someBinaryArithmeticDOUBLEoperation at line 22. Possible FailurePath: [L16] double x0, x1, x2; [L17] int i; [L19] x0 = 11. / 2. [L20] x1 = 61. / 11. [L21] i = 0 VAL [i=0] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=1, x0=170, x1=186, x2=186] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=2, x0=186, x1=114, x2=114] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=3, x0=114, x1=111, x2=111] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=4, x0=111, x1=124, x2=124] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=5, x0=124, x1=107, x2=107] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=6, x0=107, x1=198, x2=198] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=7, x0=198, x1=196, x2=196] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=8, x0=196, x1=130, x2=130] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=9, x0=130, x1=109, x2=109] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=10, x0=109, x1=139, x2=139] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=11, x0=139, x1=105, x2=105] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=12, x0=105, x1=143, x2=143] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=13, x0=143, x1=154, x2=154] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=14, x0=154, x1=156, x2=156] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=15, x0=156, x1=162, x2=162] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=16, x0=162, x1=202, x2=202] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=17, x0=202, x1=115, x2=115] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=18, x0=115, x1=179, x2=179] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=19, x0=179, x1=117, x2=117] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=20, x0=117, x1=204, x2=204] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=21, x0=204, x1=136, x2=136] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=22, x0=136, x1=174, x2=174] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=23, x0=174, x1=116, x2=116] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=24, x0=116, x1=147, x2=147] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=25, x0=147, x1=134, x2=134] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=26, x0=134, x1=200, x2=200] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=27, x0=200, x1=108, x2=108] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=28, x0=108, x1=128, x2=128] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=29, x0=128, x1=187, x2=187] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=30, x0=187, x1=175, x2=175] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=31, x0=175, x1=137, x2=137] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=32, x0=137, x1=123, x2=123] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=33, x0=123, x1=160, x2=160] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=34, x0=160, x1=141, x2=141] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=35, x0=141, x1=129, x2=129] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=36, x0=129, x1=168, x2=168] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=37, x0=168, x1=182, x2=182] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=38, x0=182, x1=199, x2=199] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=39, x0=199, x1=165, x2=165] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=40, x0=165, x1=158, x2=158] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=41, x0=158, x1=192, x2=192] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=42, x0=192, x1=171, x2=171] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=43, x0=171, x1=149, x2=149] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=44, x0=149, x1=150, x2=150] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=45, x0=150, x1=172, x2=172] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=46, x0=172, x1=132, x2=132] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=47, x0=132, x1=169, x2=169] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=48, x0=169, x1=145, x2=145] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=49, x0=145, x1=159, x2=159] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=50, x0=159, x1=195, x2=195] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=51, x0=195, x1=194, x2=194] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=52, x0=194, x1=166, x2=166] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=53, x0=166, x1=183, x2=183] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=54, x0=183, x1=138, x2=138] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=55, x0=138, x1=146, x2=146] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=56, x0=146, x1=180, x2=180] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=57, x0=180, x1=152, x2=152] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=58, x0=152, x1=142, x2=142] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=59, x0=142, x1=157, x2=157] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=60, x0=157, x1=119, x2=119] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=61, x0=119, x1=191, x2=191] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=62, x0=191, x1=121, x2=121] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=63, x0=121, x1=173, x2=173] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=64, x0=173, x1=148, x2=148] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=65, x0=148, x1=161, x2=161] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=66, x0=161, x1=201, x2=201] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=67, x0=201, x1=193, x2=193] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=68, x0=193, x1=135, x2=135] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=69, x0=135, x1=113, x2=113] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=70, x0=113, x1=110, x2=110] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=71, x0=110, x1=127, x2=127] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=72, x0=127, x1=189, x2=189] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=73, x0=189, x1=164, x2=164] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=74, x0=164, x1=106, x2=106] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=75, x0=106, x1=118, x2=118] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=76, x0=118, x1=176, x2=176] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=77, x0=176, x1=185, x2=185] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=78, x0=185, x1=122, x2=122] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=79, x0=122, x1=131, x2=131] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=80, x0=131, x1=151, x2=151] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=81, x0=151, x1=153, x2=153] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=82, x0=153, x1=178, x2=178] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=83, x0=178, x1=197, x2=197] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=84, x0=197, x1=112, x2=112] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=85, x0=112, x1=203, x2=203] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=86, x0=203, x1=126, x2=126] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=87, x0=126, x1=190, x2=190] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=88, x0=190, x1=188, x2=188] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=89, x0=188, x1=167, x2=167] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=90, x0=167, x1=125, x2=125] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=91, x0=125, x1=181, x2=181] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=92, x0=181, x1=120, x2=120] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=93, x0=120, x1=177, x2=177] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=94, x0=177, x1=205, x2=205] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=95, x0=205, x1=133, x2=133] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=96, x0=133, x1=140, x2=140] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=97, x0=140, x1=155, x2=155] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=98, x0=155, x1=184, x2=184] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=99, x0=184, x1=163, x2=163] [L21] COND TRUE i < 100 [L22] x2 = 111. - (1130. - 3000. / x0) / x1 [L23] x0 = x1 [L24] x1 = x2 [L21] i++ VAL [i=100, x0=163, x1=144, x2=144] [L21] COND FALSE !(i < 100) VAL [i=100, x0=163, x1=144, x2=144] [L27] CALL __VERIFIER_assert(x0 >= 99. && x0 <= 101.) [L12] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L12] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 8 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 24.1s, OverallIterations: 8, TraceHistogramMax: 100, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 0 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 0 mSDsluCounter, 105 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 76 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 321 IncrementalHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 29 mSDtfsCounter, 321 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 593 GetRequests, 220 SyntacticMatches, 90 SemanticMatches, 283 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5163 ImplicationChecksByTransitivity, 15.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=7, InterpolantAutomatonStates: 291, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 20.3s InterpolantComputationTime, 524 NumberOfCodeBlocks, 524 NumberOfCodeBlocksAsserted, 91 NumberOfCheckSat, 607 ConstructedInterpolants, 0 QuantifiedInterpolants, 1707 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1425 ConjunctsInSsa, 189 ConjunctsInUnsatCore, 19 InterpolantComputations, 1 PerfectInterpolantSequences, 0/17595 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 RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2023-11-26 11:47:32,512 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/float-benchs/Muller_Kahan.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme --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 61ce2c272542663cace3442e405f7ab093d2a72e636da199b8b44596c79af6c9 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:47:35,214 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:47:35,352 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2023-11-26 11:47:35,360 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:47:35,364 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:47:35,413 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:47:35,414 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:47:35,415 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:47:35,416 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:47:35,422 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:47:35,422 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:47:35,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:47:35,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:47:35,426 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:47:35,426 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:47:35,427 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:47:35,428 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:47:35,428 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:47:35,429 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:47:35,430 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:47:35,431 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:47:35,432 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:47:35,432 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:47:35,433 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-11-26 11:47:35,433 INFO L153 SettingsManager]: * Use bitvectors instead of ints=true [2023-11-26 11:47:35,434 INFO L153 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2023-11-26 11:47:35,434 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:47:35,435 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:47:35,435 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:47:35,436 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:47:35,437 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:47:35,437 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:47:35,438 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:47:35,438 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:35,438 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:47:35,438 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:47:35,439 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:47:35,439 INFO L153 SettingsManager]: * Trace refinement strategy=WOLF [2023-11-26 11:47:35,439 INFO L153 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2023-11-26 11:47:35,439 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:47:35,440 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:47:35,440 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:47:35,440 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:47:35,441 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:47:35,441 INFO L153 SettingsManager]: * Logic for external solver=AUFBV [2023-11-26 11:47:35,442 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 61ce2c272542663cace3442e405f7ab093d2a72e636da199b8b44596c79af6c9 [2023-11-26 11:47:35,841 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:47:35,863 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:47:35,866 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:47:35,868 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:47:35,872 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:47:35,874 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/float-benchs/Muller_Kahan.c [2023-11-26 11:47:39,332 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:47:39,573 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:47:39,573 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/sv-benchmarks/c/float-benchs/Muller_Kahan.c [2023-11-26 11:47:39,580 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/data/2064b0604/919b16592bd045f0898c7f5dc71cb1b2/FLAG96d9329f7 [2023-11-26 11:47:39,595 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/data/2064b0604/919b16592bd045f0898c7f5dc71cb1b2 [2023-11-26 11:47:39,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:47:39,599 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:47:39,601 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:39,601 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:47:39,611 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:47:39,612 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:39" (1/1) ... [2023-11-26 11:47:39,613 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@304132b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:39, skipping insertion in model container [2023-11-26 11:47:39,613 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:47:39" (1/1) ... [2023-11-26 11:47:39,639 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:47:39,820 WARN L240 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_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/sv-benchmarks/c/float-benchs/Muller_Kahan.c[631,644] [2023-11-26 11:47:39,834 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:39,849 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:47:39,864 WARN L240 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_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/sv-benchmarks/c/float-benchs/Muller_Kahan.c[631,644] [2023-11-26 11:47:39,870 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:47:39,888 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:47:39,889 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:39 WrapperNode [2023-11-26 11:47:39,889 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:47:39,891 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:39,891 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:47:39,891 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:47:39,898 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:39" (1/1) ... [2023-11-26 11:47:39,908 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:39" (1/1) ... [2023-11-26 11:47:39,927 INFO L138 Inliner]: procedures = 13, calls = 8, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 36 [2023-11-26 11:47:39,927 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:47:39,928 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:47:39,928 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:47:39,929 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:47:39,939 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:39" (1/1) ... [2023-11-26 11:47:39,940 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:39" (1/1) ... [2023-11-26 11:47:39,943 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:39" (1/1) ... [2023-11-26 11:47:39,956 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]. [2023-11-26 11:47:39,956 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:39" (1/1) ... [2023-11-26 11:47:39,956 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:39" (1/1) ... [2023-11-26 11:47:39,963 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:39" (1/1) ... [2023-11-26 11:47:39,985 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:39" (1/1) ... [2023-11-26 11:47:39,987 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:39" (1/1) ... [2023-11-26 11:47:39,988 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:39" (1/1) ... [2023-11-26 11:47:39,991 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:47:39,992 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:47:39,992 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:47:39,993 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:47:39,994 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:39" (1/1) ... [2023-11-26 11:47:40,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:47:40,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:47:40,034 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:47:40,065 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:47:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:47:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:47:40,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:47:40,079 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1#0 [2023-11-26 11:47:40,156 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:47:40,159 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:47:45,069 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:47:45,101 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:47:45,101 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:47:45,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:45 BoogieIcfgContainer [2023-11-26 11:47:45,102 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:47:45,108 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:47:45,108 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:47:45,112 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:47:45,113 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:47:39" (1/3) ... [2023-11-26 11:47:45,114 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18828965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:45, skipping insertion in model container [2023-11-26 11:47:45,115 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:47:39" (2/3) ... [2023-11-26 11:47:45,116 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@18828965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:47:45, skipping insertion in model container [2023-11-26 11:47:45,116 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:47:45" (3/3) ... [2023-11-26 11:47:45,117 INFO L112 eAbstractionObserver]: Analyzing ICFG Muller_Kahan.c [2023-11-26 11:47:45,133 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:47:45,133 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:47:45,188 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:47:45,197 INFO L357 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, mHoare=true, 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;@606883ba, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:47:45,197 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:47:45,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 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) [2023-11-26 11:47:45,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-11-26 11:47:45,210 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:47:45,211 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-11-26 11:47:45,212 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:47:45,222 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:47:45,223 INFO L85 PathProgramCache]: Analyzing trace with hash 59359658, now seen corresponding path program 1 times [2023-11-26 11:47:45,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2023-11-26 11:47:45,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2011776400] [2023-11-26 11:47:45,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:47:45,234 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2023-11-26 11:47:45,234 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/mathsat [2023-11-26 11:47:45,236 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2023-11-26 11:47:45,237 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d51c5a94-3a26-4bb1-a5b4-1b03f576d212/bin/uautomizer-verify-VRDe98Ueme/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2023-11-26 11:47:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:47:45,330 INFO L262 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:47:45,334 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:47:45,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-26 11:47:45,428 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:47:45,429 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2023-11-26 11:47:45,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2011776400] [2023-11-26 11:47:45,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2011776400] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:47:45,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:47:45,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-26 11:47:45,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594462639] [2023-11-26 11:47:45,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:47:45,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:47:45,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2023-11-26 11:47:45,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:47:45,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-11-26 11:47:45,486 INFO L87 Difference]: Start difference. First operand has 8 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 2 states have internal predecessors, (5), 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) [2023-11-26 11:47:52,081 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 6.56s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-11-26 11:47:56,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, FloatingPoint, RoundingMode, Real, BitVec], hasArrays=false, hasNonlinArith=false, quantifiers []