./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/config/AutomizerReach.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R --witnessprinter.witness.filename witness.graphml --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 f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 16:50:17,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 16:50:17,780 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 16:50:17,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 16:50:17,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 16:50:17,828 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 16:50:17,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 16:50:17,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 16:50:17,844 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 16:50:17,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 16:50:17,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 16:50:17,856 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 16:50:17,857 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 16:50:17,861 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 16:50:17,864 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 16:50:17,868 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 16:50:17,870 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 16:50:17,872 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 16:50:17,874 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 16:50:17,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 16:50:17,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 16:50:17,888 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 16:50:17,890 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 16:50:17,891 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 16:50:17,904 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 16:50:17,905 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 16:50:17,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 16:50:17,908 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 16:50:17,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 16:50:17,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 16:50:17,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 16:50:17,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 16:50:17,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 16:50:17,918 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 16:50:17,919 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 16:50:17,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 16:50:17,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 16:50:17,921 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 16:50:17,921 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 16:50:17,923 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 16:50:17,924 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 16:50:17,926 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-25 16:50:17,980 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 16:50:17,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 16:50:17,981 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 16:50:17,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 16:50:17,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 16:50:17,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 16:50:17,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-25 16:50:17,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-25 16:50:17,985 INFO L138 SettingsManager]: * Use SBE=true [2022-11-25 16:50:17,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 16:50:17,987 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 16:50:17,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 16:50:17,988 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 16:50:17,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 16:50:17,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 16:50:17,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 16:50:17,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 16:50:17,990 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 16:50:17,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 16:50:17,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 16:50:17,991 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 16:50:17,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 16:50:17,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-25 16:50:17,992 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 16:50:17,992 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:50:17,993 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 16:50:17,993 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 16:50:17,993 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 16:50:17,994 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-25 16:50:17,995 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 16:50:17,995 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-25 16:50:17,996 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 16:50:17,996 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-11-25 16:50:17,996 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-25 16:50:17,997 INFO L138 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_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f330893f1140a32f6e6dacd6cc5115391759545d59ea17334f6f3b644ed5a51c [2022-11-25 16:50:18,415 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 16:50:18,442 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 16:50:18,446 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 16:50:18,447 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 16:50:18,448 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 16:50:18,450 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/../../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-11-25 16:50:22,248 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 16:50:22,544 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 16:50:22,545 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2022-11-25 16:50:22,555 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/data/5927d4b22/5648432d877c438bbed8caec80690c1f/FLAG79aad7b11 [2022-11-25 16:50:22,575 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/data/5927d4b22/5648432d877c438bbed8caec80690c1f [2022-11-25 16:50:22,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 16:50:22,581 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 16:50:22,583 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 16:50:22,583 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 16:50:22,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 16:50:22,590 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:50:22" (1/1) ... [2022-11-25 16:50:22,591 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15288676 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:22, skipping insertion in model container [2022-11-25 16:50:22,592 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 04:50:22" (1/1) ... [2022-11-25 16:50:22,602 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 16:50:22,634 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 16:50:22,829 WARN L237 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_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2022-11-25 16:50:22,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:50:22,923 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 16:50:22,953 WARN L237 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_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c[728,741] [2022-11-25 16:50:23,012 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 16:50:23,031 INFO L208 MainTranslator]: Completed translation [2022-11-25 16:50:23,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:23 WrapperNode [2022-11-25 16:50:23,032 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 16:50:23,034 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 16:50:23,034 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 16:50:23,034 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 16:50:23,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:23" (1/1) ... [2022-11-25 16:50:23,069 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:23" (1/1) ... [2022-11-25 16:50:23,105 INFO L138 Inliner]: procedures = 17, calls = 15, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 166 [2022-11-25 16:50:23,106 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 16:50:23,107 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 16:50:23,107 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 16:50:23,107 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 16:50:23,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:23" (1/1) ... [2022-11-25 16:50:23,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:23" (1/1) ... [2022-11-25 16:50:23,126 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:23" (1/1) ... [2022-11-25 16:50:23,127 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:23" (1/1) ... [2022-11-25 16:50:23,140 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:23" (1/1) ... [2022-11-25 16:50:23,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:23" (1/1) ... [2022-11-25 16:50:23,166 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:23" (1/1) ... [2022-11-25 16:50:23,168 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:23" (1/1) ... [2022-11-25 16:50:23,177 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 16:50:23,179 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 16:50:23,180 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 16:50:23,180 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 16:50:23,181 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:23" (1/1) ... [2022-11-25 16:50:23,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 16:50:23,207 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:23,229 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 16:50:23,266 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 16:50:23,315 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 16:50:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 16:50:23,316 INFO L130 BoogieDeclarations]: Found specification of procedure base2flt [2022-11-25 16:50:23,316 INFO L138 BoogieDeclarations]: Found implementation of procedure base2flt [2022-11-25 16:50:23,317 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 16:50:23,317 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 16:50:23,319 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-11-25 16:50:23,319 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-11-25 16:50:23,475 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 16:50:23,493 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 16:50:24,083 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 16:50:24,093 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 16:50:24,093 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-25 16:50:24,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:50:24 BoogieIcfgContainer [2022-11-25 16:50:24,097 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 16:50:24,100 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 16:50:24,100 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 16:50:24,105 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 16:50:24,105 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 04:50:22" (1/3) ... [2022-11-25 16:50:24,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798544d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:50:24, skipping insertion in model container [2022-11-25 16:50:24,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 04:50:23" (2/3) ... [2022-11-25 16:50:24,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798544d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 04:50:24, skipping insertion in model container [2022-11-25 16:50:24,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:50:24" (3/3) ... [2022-11-25 16:50:24,109 INFO L112 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2022-11-25 16:50:24,135 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 16:50:24,136 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 16:50:24,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 16:50:24,218 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=LoopsAndPotentialCycles, 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;@64ba8de6, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 16:50:24,218 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 16:50:24,225 INFO L276 IsEmpty]: Start isEmpty. Operand has 75 states, 66 states have (on average 1.606060606060606) internal successors, (106), 68 states have internal predecessors, (106), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-11-25 16:50:24,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-25 16:50:24,240 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:24,241 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:24,242 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:24,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:24,250 INFO L85 PathProgramCache]: Analyzing trace with hash -793971860, now seen corresponding path program 1 times [2022-11-25 16:50:24,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:24,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267780595] [2022-11-25 16:50:24,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:24,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:24,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:24,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:24,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:24,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:24,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:24,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 16:50:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:24,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 16:50:24,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:24,645 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 16:50:24,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:24,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267780595] [2022-11-25 16:50:24,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267780595] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:24,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:24,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 16:50:24,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798970176] [2022-11-25 16:50:24,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:24,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:50:24,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:24,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:50:24,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:50:24,726 INFO L87 Difference]: Start difference. First operand has 75 states, 66 states have (on average 1.606060606060606) internal successors, (106), 68 states have internal predecessors, (106), 5 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:24,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:24,841 INFO L93 Difference]: Finished difference Result 181 states and 286 transitions. [2022-11-25 16:50:24,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:50:24,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 42 [2022-11-25 16:50:24,847 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:24,859 INFO L225 Difference]: With dead ends: 181 [2022-11-25 16:50:24,859 INFO L226 Difference]: Without dead ends: 69 [2022-11-25 16:50:24,865 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 16:50:24,874 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 45 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:24,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 212 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:50:24,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-25 16:50:24,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-25 16:50:24,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.4838709677419355) internal successors, (92), 62 states have internal predecessors, (92), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 16:50:24,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 101 transitions. [2022-11-25 16:50:24,944 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 101 transitions. Word has length 42 [2022-11-25 16:50:24,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:24,947 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 101 transitions. [2022-11-25 16:50:24,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:24,949 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 101 transitions. [2022-11-25 16:50:24,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-25 16:50:24,955 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:24,956 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:24,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 16:50:24,957 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:24,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:24,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1001939418, now seen corresponding path program 1 times [2022-11-25 16:50:24,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:24,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131596109] [2022-11-25 16:50:24,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:24,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:25,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:25,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:25,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:25,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:25,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 16:50:25,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:25,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 16:50:25,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:25,310 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 16:50:25,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:25,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131596109] [2022-11-25 16:50:25,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131596109] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:25,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:25,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 16:50:25,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485702638] [2022-11-25 16:50:25,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:25,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:50:25,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:25,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:50:25,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 16:50:25,325 INFO L87 Difference]: Start difference. First operand 69 states and 101 transitions. Second operand has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:25,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:25,408 INFO L93 Difference]: Finished difference Result 108 states and 158 transitions. [2022-11-25 16:50:25,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:50:25,410 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 44 [2022-11-25 16:50:25,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:25,413 INFO L225 Difference]: With dead ends: 108 [2022-11-25 16:50:25,415 INFO L226 Difference]: Without dead ends: 69 [2022-11-25 16:50:25,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 16:50:25,419 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 88 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 295 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:25,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 295 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:50:25,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2022-11-25 16:50:25,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2022-11-25 16:50:25,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 62 states have (on average 1.467741935483871) internal successors, (91), 62 states have internal predecessors, (91), 5 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-11-25 16:50:25,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 100 transitions. [2022-11-25 16:50:25,441 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 100 transitions. Word has length 44 [2022-11-25 16:50:25,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:25,443 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 100 transitions. [2022-11-25 16:50:25,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.75) internal successors, (23), 4 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:25,444 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 100 transitions. [2022-11-25 16:50:25,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-11-25 16:50:25,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:25,462 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:25,463 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 16:50:25,463 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:25,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:25,467 INFO L85 PathProgramCache]: Analyzing trace with hash -1588745432, now seen corresponding path program 1 times [2022-11-25 16:50:25,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:25,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097300629] [2022-11-25 16:50:25,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:25,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:25,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:25,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:25,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:25,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-11-25 16:50:25,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:25,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-25 16:50:25,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:25,707 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 16:50:25,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:25,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097300629] [2022-11-25 16:50:25,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097300629] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:25,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436339742] [2022-11-25 16:50:25,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:25,709 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:25,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:25,714 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:50:25,737 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 16:50:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:25,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-25 16:50:25,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:26,174 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 16:50:26,176 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:50:26,510 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 16:50:26,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [436339742] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:50:26,511 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:50:26,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 9, 7] total 15 [2022-11-25 16:50:26,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856821882] [2022-11-25 16:50:26,512 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:50:26,513 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-25 16:50:26,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:26,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-25 16:50:26,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:50:26,514 INFO L87 Difference]: Start difference. First operand 69 states and 100 transitions. Second operand has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-25 16:50:27,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:27,064 INFO L93 Difference]: Finished difference Result 206 states and 313 transitions. [2022-11-25 16:50:27,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-25 16:50:27,066 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 44 [2022-11-25 16:50:27,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:27,077 INFO L225 Difference]: With dead ends: 206 [2022-11-25 16:50:27,077 INFO L226 Difference]: Without dead ends: 140 [2022-11-25 16:50:27,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 84 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2022-11-25 16:50:27,089 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 234 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 744 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:27,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 744 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 16:50:27,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-11-25 16:50:27,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 123. [2022-11-25 16:50:27,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 112 states have (on average 1.4464285714285714) internal successors, (162), 113 states have internal predecessors, (162), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-25 16:50:27,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 183 transitions. [2022-11-25 16:50:27,135 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 183 transitions. Word has length 44 [2022-11-25 16:50:27,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:27,137 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 183 transitions. [2022-11-25 16:50:27,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 3.533333333333333) internal successors, (53), 13 states have internal predecessors, (53), 4 states have call successors, (8), 2 states have call predecessors, (8), 5 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-25 16:50:27,138 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 183 transitions. [2022-11-25 16:50:27,142 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2022-11-25 16:50:27,147 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:27,148 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:27,180 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 16:50:27,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:27,377 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:27,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:27,378 INFO L85 PathProgramCache]: Analyzing trace with hash -565986950, now seen corresponding path program 1 times [2022-11-25 16:50:27,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:27,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428261420] [2022-11-25 16:50:27,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:27,379 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:27,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:27,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:27,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:27,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:27,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-25 16:50:27,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:27,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-25 16:50:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:27,522 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 16:50:27,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:27,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428261420] [2022-11-25 16:50:27,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428261420] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:27,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114107145] [2022-11-25 16:50:27,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:27,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:27,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:27,526 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:50:27,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 16:50:27,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:27,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 16:50:27,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:27,721 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:50:27,722 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:50:27,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114107145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:27,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:50:27,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-25 16:50:27,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079761571] [2022-11-25 16:50:27,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:27,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:50:27,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:27,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:50:27,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:50:27,738 INFO L87 Difference]: Start difference. First operand 123 states and 183 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 16:50:27,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:27,835 INFO L93 Difference]: Finished difference Result 248 states and 371 transitions. [2022-11-25 16:50:27,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:50:27,836 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 49 [2022-11-25 16:50:27,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:27,838 INFO L225 Difference]: With dead ends: 248 [2022-11-25 16:50:27,839 INFO L226 Difference]: Without dead ends: 132 [2022-11-25 16:50:27,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:50:27,841 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 20 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 255 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:27,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 255 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:50:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-11-25 16:50:27,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2022-11-25 16:50:27,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 116 states have (on average 1.4396551724137931) internal successors, (167), 118 states have internal predecessors, (167), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-25 16:50:27,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 191 transitions. [2022-11-25 16:50:27,860 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 191 transitions. Word has length 49 [2022-11-25 16:50:27,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:27,860 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 191 transitions. [2022-11-25 16:50:27,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 16:50:27,861 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 191 transitions. [2022-11-25 16:50:27,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-11-25 16:50:27,863 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:27,863 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:27,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 16:50:28,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-11-25 16:50:28,072 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:28,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:28,072 INFO L85 PathProgramCache]: Analyzing trace with hash 575914592, now seen corresponding path program 1 times [2022-11-25 16:50:28,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:28,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228417210] [2022-11-25 16:50:28,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:28,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:28,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:28,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:28,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:28,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:28,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:28,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-25 16:50:28,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:28,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-25 16:50:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:28,269 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 16:50:28,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:28,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228417210] [2022-11-25 16:50:28,270 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [228417210] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:28,270 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1217354161] [2022-11-25 16:50:28,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:28,271 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:28,271 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:28,273 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:50:28,311 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 16:50:28,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:28,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 16:50:28,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:28,465 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 16:50:28,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:50:28,652 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 16:50:28,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1217354161] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:50:28,653 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:50:28,654 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2022-11-25 16:50:28,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146939981] [2022-11-25 16:50:28,654 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:50:28,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-25 16:50:28,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:28,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-25 16:50:28,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-25 16:50:28,660 INFO L87 Difference]: Start difference. First operand 128 states and 191 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 16:50:28,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:28,966 INFO L93 Difference]: Finished difference Result 322 states and 498 transitions. [2022-11-25 16:50:28,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 16:50:28,967 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2022-11-25 16:50:28,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:28,976 INFO L225 Difference]: With dead ends: 322 [2022-11-25 16:50:28,977 INFO L226 Difference]: Without dead ends: 201 [2022-11-25 16:50:28,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2022-11-25 16:50:28,984 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 103 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 589 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:28,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 589 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 16:50:28,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-11-25 16:50:29,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 142. [2022-11-25 16:50:29,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 130 states have (on average 1.4692307692307693) internal successors, (191), 132 states have internal predecessors, (191), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-25 16:50:29,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 215 transitions. [2022-11-25 16:50:29,021 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 215 transitions. Word has length 52 [2022-11-25 16:50:29,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:29,021 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 215 transitions. [2022-11-25 16:50:29,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 11 states have internal predecessors, (59), 2 states have call successors, (7), 2 states have call predecessors, (7), 5 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-25 16:50:29,022 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 215 transitions. [2022-11-25 16:50:29,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 16:50:29,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:29,024 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:29,037 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 16:50:29,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:29,225 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:29,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:29,226 INFO L85 PathProgramCache]: Analyzing trace with hash -626586992, now seen corresponding path program 1 times [2022-11-25 16:50:29,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:29,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533383871] [2022-11-25 16:50:29,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:29,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:29,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:29,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:29,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:29,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:29,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:50:29,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:29,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 16:50:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:29,568 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 16:50:29,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:29,569 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533383871] [2022-11-25 16:50:29,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533383871] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:29,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1108591769] [2022-11-25 16:50:29,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:29,576 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:29,577 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:29,578 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:50:29,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 16:50:29,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:29,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-25 16:50:29,694 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:29,760 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 16:50:29,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:50:29,894 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 16:50:29,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1108591769] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:29,895 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:50:29,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 7] total 13 [2022-11-25 16:50:29,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808374573] [2022-11-25 16:50:29,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:29,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 16:50:29,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:29,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 16:50:29,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:50:29,902 INFO L87 Difference]: Start difference. First operand 142 states and 215 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:29,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:29,994 INFO L93 Difference]: Finished difference Result 159 states and 233 transitions. [2022-11-25 16:50:29,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 16:50:29,995 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2022-11-25 16:50:30,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:30,007 INFO L225 Difference]: With dead ends: 159 [2022-11-25 16:50:30,007 INFO L226 Difference]: Without dead ends: 153 [2022-11-25 16:50:30,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:50:30,010 INFO L413 NwaCegarLoop]: 95 mSDtfsCounter, 16 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 377 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:30,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 377 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:50:30,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-11-25 16:50:30,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2022-11-25 16:50:30,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 139 states have (on average 1.4460431654676258) internal successors, (201), 141 states have internal predecessors, (201), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-25 16:50:30,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 225 transitions. [2022-11-25 16:50:30,035 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 225 transitions. Word has length 54 [2022-11-25 16:50:30,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:30,036 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 225 transitions. [2022-11-25 16:50:30,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:30,036 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 225 transitions. [2022-11-25 16:50:30,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 16:50:30,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:30,038 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:30,054 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 16:50:30,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 16:50:30,245 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:30,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:30,245 INFO L85 PathProgramCache]: Analyzing trace with hash -569328690, now seen corresponding path program 1 times [2022-11-25 16:50:30,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:30,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196610204] [2022-11-25 16:50:30,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:30,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:30,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:30,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:30,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:30,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:30,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:50:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:30,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-25 16:50:30,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:30,388 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 16:50:30,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:30,388 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196610204] [2022-11-25 16:50:30,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196610204] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:30,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:30,389 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 16:50:30,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494272432] [2022-11-25 16:50:30,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:30,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 16:50:30,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:30,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 16:50:30,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 16:50:30,398 INFO L87 Difference]: Start difference. First operand 151 states and 225 transitions. Second operand has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:30,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:30,465 INFO L93 Difference]: Finished difference Result 157 states and 230 transitions. [2022-11-25 16:50:30,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:50:30,467 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 54 [2022-11-25 16:50:30,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:30,468 INFO L225 Difference]: With dead ends: 157 [2022-11-25 16:50:30,468 INFO L226 Difference]: Without dead ends: 146 [2022-11-25 16:50:30,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:50:30,470 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 2 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:30,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 480 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:50:30,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-11-25 16:50:30,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2022-11-25 16:50:30,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 134 states have (on average 1.4328358208955223) internal successors, (192), 136 states have internal predecessors, (192), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-25 16:50:30,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 216 transitions. [2022-11-25 16:50:30,484 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 216 transitions. Word has length 54 [2022-11-25 16:50:30,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:30,485 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 216 transitions. [2022-11-25 16:50:30,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 6.8) internal successors, (34), 5 states have internal predecessors, (34), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:30,485 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 216 transitions. [2022-11-25 16:50:30,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 16:50:30,487 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:30,487 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:30,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 16:50:30,487 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:30,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:30,488 INFO L85 PathProgramCache]: Analyzing trace with hash -780967015, now seen corresponding path program 1 times [2022-11-25 16:50:30,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:30,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85228821] [2022-11-25 16:50:30,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:30,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:30,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:30,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:30,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:30,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:30,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:50:30,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:30,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 16:50:30,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:30,657 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 16:50:30,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:30,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85228821] [2022-11-25 16:50:30,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85228821] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:30,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63850908] [2022-11-25 16:50:30,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:30,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:30,659 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:30,660 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:50:30,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 16:50:30,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:30,769 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-25 16:50:30,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:30,887 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 16:50:30,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:50:31,131 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-11-25 16:50:31,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63850908] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:31,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:50:31,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 8] total 15 [2022-11-25 16:50:31,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435209291] [2022-11-25 16:50:31,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:31,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 16:50:31,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:31,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 16:50:31,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:50:31,134 INFO L87 Difference]: Start difference. First operand 146 states and 216 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:31,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:31,315 INFO L93 Difference]: Finished difference Result 217 states and 313 transitions. [2022-11-25 16:50:31,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 16:50:31,331 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 56 [2022-11-25 16:50:31,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:31,333 INFO L225 Difference]: With dead ends: 217 [2022-11-25 16:50:31,333 INFO L226 Difference]: Without dead ends: 208 [2022-11-25 16:50:31,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=47, Invalid=225, Unknown=0, NotChecked=0, Total=272 [2022-11-25 16:50:31,335 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 307 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 252 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:31,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 252 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:50:31,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2022-11-25 16:50:31,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 147. [2022-11-25 16:50:31,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 135 states have (on average 1.4296296296296296) internal successors, (193), 137 states have internal predecessors, (193), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-25 16:50:31,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 217 transitions. [2022-11-25 16:50:31,355 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 217 transitions. Word has length 56 [2022-11-25 16:50:31,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:31,356 INFO L495 AbstractCegarLoop]: Abstraction has 147 states and 217 transitions. [2022-11-25 16:50:31,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:31,357 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 217 transitions. [2022-11-25 16:50:31,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-25 16:50:31,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:31,359 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:31,367 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 16:50:31,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 16:50:31,567 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:31,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:31,567 INFO L85 PathProgramCache]: Analyzing trace with hash -1173994025, now seen corresponding path program 1 times [2022-11-25 16:50:31,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:31,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779286207] [2022-11-25 16:50:31,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:31,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:31,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:31,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:31,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:31,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:31,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:31,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-25 16:50:31,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:31,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-25 16:50:31,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:31,746 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 16:50:31,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:31,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779286207] [2022-11-25 16:50:31,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779286207] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:31,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731189959] [2022-11-25 16:50:31,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:31,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:31,748 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:31,749 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:50:31,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 16:50:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:31,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-25 16:50:31,867 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:31,998 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 16:50:31,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:50:32,204 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 16:50:32,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731189959] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:50:32,204 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:50:32,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 6] total 14 [2022-11-25 16:50:32,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1276549973] [2022-11-25 16:50:32,205 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:50:32,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 16:50:32,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:32,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 16:50:32,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-25 16:50:32,207 INFO L87 Difference]: Start difference. First operand 147 states and 217 transitions. Second operand has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 12 states have internal predecessors, (83), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 16:50:32,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:32,893 INFO L93 Difference]: Finished difference Result 318 states and 475 transitions. [2022-11-25 16:50:32,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-11-25 16:50:32,894 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 12 states have internal predecessors, (83), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 56 [2022-11-25 16:50:32,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:32,896 INFO L225 Difference]: With dead ends: 318 [2022-11-25 16:50:32,897 INFO L226 Difference]: Without dead ends: 173 [2022-11-25 16:50:32,898 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=159, Invalid=491, Unknown=0, NotChecked=0, Total=650 [2022-11-25 16:50:32,899 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 259 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 246 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 629 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 246 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:32,899 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 629 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 246 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 16:50:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-11-25 16:50:32,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 101. [2022-11-25 16:50:32,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 92 states have (on average 1.434782608695652) internal successors, (132), 92 states have internal predecessors, (132), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 16:50:32,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 145 transitions. [2022-11-25 16:50:32,946 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 145 transitions. Word has length 56 [2022-11-25 16:50:32,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:32,947 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 145 transitions. [2022-11-25 16:50:32,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.928571428571429) internal successors, (83), 12 states have internal predecessors, (83), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 16:50:32,947 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 145 transitions. [2022-11-25 16:50:32,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-25 16:50:32,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:32,949 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:32,977 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-25 16:50:33,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:33,157 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:33,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:33,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1149225424, now seen corresponding path program 1 times [2022-11-25 16:50:33,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:33,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9687847] [2022-11-25 16:50:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:33,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:33,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:33,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:33,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:33,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:33,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 16:50:33,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:33,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 16:50:33,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:33,375 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 16:50:33,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:33,375 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9687847] [2022-11-25 16:50:33,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9687847] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:33,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1764512418] [2022-11-25 16:50:33,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:33,376 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:33,377 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:33,378 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:50:33,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 16:50:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:33,482 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 16:50:33,484 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:33,540 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 16:50:33,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:50:33,622 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-11-25 16:50:33,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1764512418] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:33,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:50:33,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 5] total 10 [2022-11-25 16:50:33,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672277367] [2022-11-25 16:50:33,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:33,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 16:50:33,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:33,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 16:50:33,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 16:50:33,628 INFO L87 Difference]: Start difference. First operand 101 states and 145 transitions. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:33,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:33,651 INFO L93 Difference]: Finished difference Result 128 states and 180 transitions. [2022-11-25 16:50:33,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 16:50:33,652 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 66 [2022-11-25 16:50:33,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:33,654 INFO L225 Difference]: With dead ends: 128 [2022-11-25 16:50:33,655 INFO L226 Difference]: Without dead ends: 101 [2022-11-25 16:50:33,655 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-25 16:50:33,656 INFO L413 NwaCegarLoop]: 91 mSDtfsCounter, 39 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:33,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 139 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:50:33,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-11-25 16:50:33,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-11-25 16:50:33,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 92 states have (on average 1.423913043478261) internal successors, (131), 92 states have internal predecessors, (131), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 16:50:33,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 144 transitions. [2022-11-25 16:50:33,676 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 144 transitions. Word has length 66 [2022-11-25 16:50:33,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:33,679 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 144 transitions. [2022-11-25 16:50:33,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 144 transitions. [2022-11-25 16:50:33,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 16:50:33,681 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:33,681 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:33,698 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 16:50:33,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 16:50:33,889 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:33,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:33,890 INFO L85 PathProgramCache]: Analyzing trace with hash 526310599, now seen corresponding path program 1 times [2022-11-25 16:50:33,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:33,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2134674415] [2022-11-25 16:50:33,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:33,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:34,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:34,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:34,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:34,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 16:50:34,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:34,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 16:50:34,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:34,083 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 16:50:34,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:34,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2134674415] [2022-11-25 16:50:34,084 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2134674415] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:34,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [533706297] [2022-11-25 16:50:34,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:34,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:34,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:34,086 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:50:34,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 16:50:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:34,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 16:50:34,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:34,320 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 16:50:34,321 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:50:34,500 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 16:50:34,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [533706297] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:50:34,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:50:34,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2022-11-25 16:50:34,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041026873] [2022-11-25 16:50:34,502 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:50:34,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 16:50:34,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:34,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 16:50:34,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-11-25 16:50:34,505 INFO L87 Difference]: Start difference. First operand 101 states and 144 transitions. Second operand has 20 states, 20 states have (on average 4.1) internal successors, (82), 17 states have internal predecessors, (82), 5 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 16:50:34,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:34,722 INFO L93 Difference]: Finished difference Result 211 states and 298 transitions. [2022-11-25 16:50:34,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:50:34,723 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.1) internal successors, (82), 17 states have internal predecessors, (82), 5 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) Word has length 67 [2022-11-25 16:50:34,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:34,728 INFO L225 Difference]: With dead ends: 211 [2022-11-25 16:50:34,728 INFO L226 Difference]: Without dead ends: 175 [2022-11-25 16:50:34,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 130 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2022-11-25 16:50:34,730 INFO L413 NwaCegarLoop]: 88 mSDtfsCounter, 335 mSDsluCounter, 1018 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 1106 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:34,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 1106 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:50:34,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2022-11-25 16:50:34,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 117. [2022-11-25 16:50:34,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 105 states have (on average 1.3714285714285714) internal successors, (144), 106 states have internal predecessors, (144), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (18), 6 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-25 16:50:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 168 transitions. [2022-11-25 16:50:34,753 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 168 transitions. Word has length 67 [2022-11-25 16:50:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:34,754 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 168 transitions. [2022-11-25 16:50:34,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.1) internal successors, (82), 17 states have internal predecessors, (82), 5 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 7 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 16:50:34,755 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 168 transitions. [2022-11-25 16:50:34,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 16:50:34,759 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:34,759 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:34,772 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 16:50:34,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-25 16:50:34,967 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:34,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:34,967 INFO L85 PathProgramCache]: Analyzing trace with hash 745165317, now seen corresponding path program 1 times [2022-11-25 16:50:34,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:34,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791491176] [2022-11-25 16:50:34,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:34,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:34,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:35,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 16:50:35,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 16:50:35,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,154 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-25 16:50:35,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:35,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791491176] [2022-11-25 16:50:35,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791491176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:35,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:35,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:50:35,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532080585] [2022-11-25 16:50:35,156 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:35,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:50:35,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:35,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:50:35,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:50:35,158 INFO L87 Difference]: Start difference. First operand 117 states and 168 transitions. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:35,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:35,255 INFO L93 Difference]: Finished difference Result 168 states and 232 transitions. [2022-11-25 16:50:35,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:50:35,256 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 67 [2022-11-25 16:50:35,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:35,258 INFO L225 Difference]: With dead ends: 168 [2022-11-25 16:50:35,258 INFO L226 Difference]: Without dead ends: 117 [2022-11-25 16:50:35,259 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:50:35,260 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 4 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:35,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 536 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:50:35,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-11-25 16:50:35,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-11-25 16:50:35,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 105 states have (on average 1.3714285714285714) internal successors, (144), 106 states have internal predecessors, (144), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-25 16:50:35,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 162 transitions. [2022-11-25 16:50:35,282 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 162 transitions. Word has length 67 [2022-11-25 16:50:35,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:35,282 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 162 transitions. [2022-11-25 16:50:35,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 6 states have internal predecessors, (48), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:35,283 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 162 transitions. [2022-11-25 16:50:35,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-25 16:50:35,284 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:35,285 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:35,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 16:50:35,285 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:35,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:35,286 INFO L85 PathProgramCache]: Analyzing trace with hash -932642122, now seen corresponding path program 1 times [2022-11-25 16:50:35,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:35,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427220842] [2022-11-25 16:50:35,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:35,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:35,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:35,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 16:50:35,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 16:50:35,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,447 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-25 16:50:35,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:35,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427220842] [2022-11-25 16:50:35,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427220842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:35,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:35,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 16:50:35,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239513703] [2022-11-25 16:50:35,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:35,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 16:50:35,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:35,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 16:50:35,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 16:50:35,451 INFO L87 Difference]: Start difference. First operand 117 states and 162 transitions. Second operand has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:35,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:35,564 INFO L93 Difference]: Finished difference Result 225 states and 307 transitions. [2022-11-25 16:50:35,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 16:50:35,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 71 [2022-11-25 16:50:35,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:35,568 INFO L225 Difference]: With dead ends: 225 [2022-11-25 16:50:35,568 INFO L226 Difference]: Without dead ends: 198 [2022-11-25 16:50:35,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-11-25 16:50:35,571 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 126 mSDsluCounter, 485 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:35,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [126 Valid, 578 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:50:35,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-11-25 16:50:35,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 143. [2022-11-25 16:50:35,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 130 states have (on average 1.3307692307692307) internal successors, (173), 130 states have internal predecessors, (173), 6 states have call successors, (6), 4 states have call predecessors, (6), 6 states have return successors, (15), 8 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-25 16:50:35,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 194 transitions. [2022-11-25 16:50:35,597 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 194 transitions. Word has length 71 [2022-11-25 16:50:35,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:35,597 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 194 transitions. [2022-11-25 16:50:35,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:35,598 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 194 transitions. [2022-11-25 16:50:35,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-25 16:50:35,599 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:35,600 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:35,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 16:50:35,601 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:35,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:35,601 INFO L85 PathProgramCache]: Analyzing trace with hash 2082461496, now seen corresponding path program 1 times [2022-11-25 16:50:35,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:35,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278663263] [2022-11-25 16:50:35,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:35,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:35,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 16:50:35,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-25 16:50:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,848 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 4 proven. 12 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 16:50:35,848 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:35,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278663263] [2022-11-25 16:50:35,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278663263] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:35,849 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685249833] [2022-11-25 16:50:35,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:35,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:35,850 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:35,851 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:50:35,875 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 16:50:35,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:35,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 209 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 16:50:35,979 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:36,057 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 16:50:36,057 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:50:36,155 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-11-25 16:50:36,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685249833] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:36,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-25 16:50:36,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 6] total 12 [2022-11-25 16:50:36,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66244360] [2022-11-25 16:50:36,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:36,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:50:36,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:36,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:50:36,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-25 16:50:36,158 INFO L87 Difference]: Start difference. First operand 143 states and 194 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:36,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:36,188 INFO L93 Difference]: Finished difference Result 183 states and 245 transitions. [2022-11-25 16:50:36,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:50:36,189 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 71 [2022-11-25 16:50:36,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:36,191 INFO L225 Difference]: With dead ends: 183 [2022-11-25 16:50:36,191 INFO L226 Difference]: Without dead ends: 123 [2022-11-25 16:50:36,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-25 16:50:36,193 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 42 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 186 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 [2022-11-25 16:50:36,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 186 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:50:36,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-11-25 16:50:36,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 122. [2022-11-25 16:50:36,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 111 states have (on average 1.3333333333333333) internal successors, (148), 112 states have internal predecessors, (148), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-25 16:50:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 162 transitions. [2022-11-25 16:50:36,209 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 162 transitions. Word has length 71 [2022-11-25 16:50:36,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:36,210 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 162 transitions. [2022-11-25 16:50:36,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:36,210 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 162 transitions. [2022-11-25 16:50:36,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 16:50:36,212 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:36,212 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:36,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 16:50:36,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 16:50:36,419 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:36,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:36,420 INFO L85 PathProgramCache]: Analyzing trace with hash -2106891108, now seen corresponding path program 1 times [2022-11-25 16:50:36,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:36,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260529963] [2022-11-25 16:50:36,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:36,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:36,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:36,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:36,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:36,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:36,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 16:50:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:36,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-25 16:50:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:36,597 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 16:50:36,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:36,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260529963] [2022-11-25 16:50:36,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260529963] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:36,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 16:50:36,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 16:50:36,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795869677] [2022-11-25 16:50:36,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:36,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 16:50:36,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:36,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 16:50:36,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 16:50:36,605 INFO L87 Difference]: Start difference. First operand 122 states and 162 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:36,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:36,740 INFO L93 Difference]: Finished difference Result 210 states and 281 transitions. [2022-11-25 16:50:36,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 16:50:36,741 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 76 [2022-11-25 16:50:36,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:36,743 INFO L225 Difference]: With dead ends: 210 [2022-11-25 16:50:36,743 INFO L226 Difference]: Without dead ends: 177 [2022-11-25 16:50:36,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-25 16:50:36,747 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 172 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:36,747 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 753 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:50:36,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2022-11-25 16:50:36,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 125. [2022-11-25 16:50:36,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 114 states have (on average 1.3245614035087718) internal successors, (151), 115 states have internal predecessors, (151), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-25 16:50:36,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 165 transitions. [2022-11-25 16:50:36,764 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 165 transitions. Word has length 76 [2022-11-25 16:50:36,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:36,765 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 165 transitions. [2022-11-25 16:50:36,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 7 states have internal predecessors, (53), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:36,765 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 165 transitions. [2022-11-25 16:50:36,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 16:50:36,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:36,767 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:36,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 16:50:36,768 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:36,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:36,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1370427738, now seen corresponding path program 1 times [2022-11-25 16:50:36,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:36,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733959572] [2022-11-25 16:50:36,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:36,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:36,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:36,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:36,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:36,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:36,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:36,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 16:50:36,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:37,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-25 16:50:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:37,035 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 16:50:37,036 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:37,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733959572] [2022-11-25 16:50:37,036 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733959572] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:37,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48639186] [2022-11-25 16:50:37,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:37,037 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:37,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:37,039 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:50:37,044 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 16:50:37,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:37,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 16:50:37,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 16:50:37,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:50:37,354 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 16:50:37,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48639186] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:50:37,355 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:50:37,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 14 [2022-11-25 16:50:37,356 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036091001] [2022-11-25 16:50:37,356 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:50:37,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-25 16:50:37,357 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:37,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-25 16:50:37,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-25 16:50:37,359 INFO L87 Difference]: Start difference. First operand 125 states and 165 transitions. Second operand has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 16:50:37,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:37,566 INFO L93 Difference]: Finished difference Result 254 states and 336 transitions. [2022-11-25 16:50:37,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 16:50:37,567 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 76 [2022-11-25 16:50:37,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:37,568 INFO L225 Difference]: With dead ends: 254 [2022-11-25 16:50:37,569 INFO L226 Difference]: Without dead ends: 215 [2022-11-25 16:50:37,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-25 16:50:37,570 INFO L413 NwaCegarLoop]: 127 mSDtfsCounter, 297 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 152 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:37,571 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1081 Invalid, 152 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:50:37,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-25 16:50:37,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 142. [2022-11-25 16:50:37,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 130 states have (on average 1.3) internal successors, (169), 129 states have internal predecessors, (169), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-25 16:50:37,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 187 transitions. [2022-11-25 16:50:37,590 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 187 transitions. Word has length 76 [2022-11-25 16:50:37,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:37,591 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 187 transitions. [2022-11-25 16:50:37,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.071428571428571) internal successors, (71), 12 states have internal predecessors, (71), 4 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-25 16:50:37,592 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 187 transitions. [2022-11-25 16:50:37,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 16:50:37,593 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:37,594 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:37,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 16:50:37,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 16:50:37,801 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:37,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:37,802 INFO L85 PathProgramCache]: Analyzing trace with hash 90564060, now seen corresponding path program 1 times [2022-11-25 16:50:37,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:37,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314188692] [2022-11-25 16:50:37,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:37,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:37,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:37,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:38,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 16:50:38,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:38,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-25 16:50:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:38,027 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 16:50:38,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:38,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314188692] [2022-11-25 16:50:38,028 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314188692] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:38,028 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1985168187] [2022-11-25 16:50:38,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:38,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:38,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:38,030 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:50:38,055 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 16:50:38,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:38,149 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-25 16:50:38,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:38,330 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-11-25 16:50:38,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:50:38,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1985168187] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:38,331 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:50:38,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [6] total 13 [2022-11-25 16:50:38,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935503656] [2022-11-25 16:50:38,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:38,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 16:50:38,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:38,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 16:50:38,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2022-11-25 16:50:38,334 INFO L87 Difference]: Start difference. First operand 142 states and 187 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 16:50:38,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:38,533 INFO L93 Difference]: Finished difference Result 248 states and 325 transitions. [2022-11-25 16:50:38,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 16:50:38,534 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 76 [2022-11-25 16:50:38,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:38,536 INFO L225 Difference]: With dead ends: 248 [2022-11-25 16:50:38,536 INFO L226 Difference]: Without dead ends: 212 [2022-11-25 16:50:38,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-25 16:50:38,538 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 137 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 753 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:38,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 753 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 16:50:38,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-11-25 16:50:38,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 142. [2022-11-25 16:50:38,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 130 states have (on average 1.2923076923076924) internal successors, (168), 129 states have internal predecessors, (168), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (12), 8 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-25 16:50:38,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 186 transitions. [2022-11-25 16:50:38,563 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 186 transitions. Word has length 76 [2022-11-25 16:50:38,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:38,563 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 186 transitions. [2022-11-25 16:50:38,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 7 states have internal predecessors, (52), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-25 16:50:38,564 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 186 transitions. [2022-11-25 16:50:38,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 16:50:38,566 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:38,566 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:38,579 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 16:50:38,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-25 16:50:38,774 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:38,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:38,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1714874274, now seen corresponding path program 1 times [2022-11-25 16:50:38,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:38,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189583799] [2022-11-25 16:50:38,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:38,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:38,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:38,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:38,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:38,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:39,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-25 16:50:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-25 16:50:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:39,050 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 13 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-11-25 16:50:39,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:39,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189583799] [2022-11-25 16:50:39,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189583799] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:39,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1713137581] [2022-11-25 16:50:39,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:39,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:39,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:39,053 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:50:39,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 16:50:39,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:39,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 16 conjunts are in the unsatisfiable core [2022-11-25 16:50:39,164 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:39,381 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 16:50:39,381 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:50:39,673 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-11-25 16:50:39,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1713137581] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:50:39,673 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:50:39,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 10, 10] total 21 [2022-11-25 16:50:39,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485116617] [2022-11-25 16:50:39,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:50:39,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-25 16:50:39,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:39,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-25 16:50:39,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2022-11-25 16:50:39,676 INFO L87 Difference]: Start difference. First operand 142 states and 186 transitions. Second operand has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 19 states have internal predecessors, (106), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-25 16:50:40,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:40,337 INFO L93 Difference]: Finished difference Result 341 states and 454 transitions. [2022-11-25 16:50:40,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-25 16:50:40,338 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 19 states have internal predecessors, (106), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) Word has length 76 [2022-11-25 16:50:40,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:40,340 INFO L225 Difference]: With dead ends: 341 [2022-11-25 16:50:40,340 INFO L226 Difference]: Without dead ends: 147 [2022-11-25 16:50:40,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=717, Unknown=0, NotChecked=0, Total=870 [2022-11-25 16:50:40,342 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 154 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1097 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:40,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1097 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 16:50:40,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-11-25 16:50:40,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 125. [2022-11-25 16:50:40,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 114 states have (on average 1.3245614035087718) internal successors, (151), 115 states have internal predecessors, (151), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 16:50:40,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 164 transitions. [2022-11-25 16:50:40,365 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 164 transitions. Word has length 76 [2022-11-25 16:50:40,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:40,365 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 164 transitions. [2022-11-25 16:50:40,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 5.0476190476190474) internal successors, (106), 19 states have internal predecessors, (106), 4 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (9), 6 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-25 16:50:40,366 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 164 transitions. [2022-11-25 16:50:40,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-25 16:50:40,367 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:40,368 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:40,376 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 16:50:40,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-25 16:50:40,575 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:40,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:40,575 INFO L85 PathProgramCache]: Analyzing trace with hash -2040999085, now seen corresponding path program 1 times [2022-11-25 16:50:40,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:40,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214417796] [2022-11-25 16:50:40,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:40,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:40,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:40,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:40,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:40,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:40,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:40,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 16:50:40,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:40,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:50:40,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:40,999 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-11-25 16:50:41,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:41,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214417796] [2022-11-25 16:50:41,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214417796] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:41,000 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641624944] [2022-11-25 16:50:41,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:41,001 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:41,001 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:41,003 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:50:41,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 16:50:41,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:41,122 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-25 16:50:41,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:41,164 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-25 16:50:41,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 16:50:41,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [641624944] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 16:50:41,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 16:50:41,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-11-25 16:50:41,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552741806] [2022-11-25 16:50:41,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 16:50:41,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 16:50:41,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:41,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 16:50:41,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-25 16:50:41,168 INFO L87 Difference]: Start difference. First operand 125 states and 164 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:41,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:41,209 INFO L93 Difference]: Finished difference Result 153 states and 200 transitions. [2022-11-25 16:50:41,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 16:50:41,210 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 82 [2022-11-25 16:50:41,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:41,211 INFO L225 Difference]: With dead ends: 153 [2022-11-25 16:50:41,211 INFO L226 Difference]: Without dead ends: 129 [2022-11-25 16:50:41,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-25 16:50:41,213 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 2 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 268 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:41,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 268 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-25 16:50:41,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-11-25 16:50:41,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 127. [2022-11-25 16:50:41,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 116 states have (on average 1.3189655172413792) internal successors, (153), 117 states have internal predecessors, (153), 5 states have call successors, (5), 4 states have call predecessors, (5), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-25 16:50:41,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 166 transitions. [2022-11-25 16:50:41,228 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 166 transitions. Word has length 82 [2022-11-25 16:50:41,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:41,229 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 166 transitions. [2022-11-25 16:50:41,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-25 16:50:41,229 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 166 transitions. [2022-11-25 16:50:41,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-25 16:50:41,230 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 16:50:41,231 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:41,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-25 16:50:41,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:41,444 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 16:50:41,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 16:50:41,444 INFO L85 PathProgramCache]: Analyzing trace with hash 974104533, now seen corresponding path program 1 times [2022-11-25 16:50:41,445 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-25 16:50:41,445 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686711736] [2022-11-25 16:50:41,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:41,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 16:50:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:41,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-25 16:50:41,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:41,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-25 16:50:41,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:41,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-25 16:50:41,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:41,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-25 16:50:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:41,737 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 4 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 16:50:41,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-25 16:50:41,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686711736] [2022-11-25 16:50:41,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686711736] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 16:50:41,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859782646] [2022-11-25 16:50:41,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 16:50:41,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:41,739 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 [2022-11-25 16:50:41,741 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 16:50:41,763 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-25 16:50:41,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 16:50:41,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-25 16:50:41,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 16:50:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-11-25 16:50:42,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 16:50:42,375 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-11-25 16:50:42,375 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859782646] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 16:50:42,375 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-25 16:50:42,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 10] total 20 [2022-11-25 16:50:42,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1730755625] [2022-11-25 16:50:42,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-25 16:50:42,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-25 16:50:42,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-25 16:50:42,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-25 16:50:42,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2022-11-25 16:50:42,378 INFO L87 Difference]: Start difference. First operand 127 states and 166 transitions. Second operand has 20 states, 20 states have (on average 4.6) internal successors, (92), 18 states have internal predecessors, (92), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 16:50:43,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 16:50:43,310 INFO L93 Difference]: Finished difference Result 212 states and 280 transitions. [2022-11-25 16:50:43,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-25 16:50:43,311 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 18 states have internal predecessors, (92), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) Word has length 82 [2022-11-25 16:50:43,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 16:50:43,311 INFO L225 Difference]: With dead ends: 212 [2022-11-25 16:50:43,311 INFO L226 Difference]: Without dead ends: 0 [2022-11-25 16:50:43,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 197 GetRequests, 161 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=231, Invalid=1101, Unknown=0, NotChecked=0, Total=1332 [2022-11-25 16:50:43,313 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 199 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 16:50:43,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [199 Valid, 272 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 16:50:43,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-25 16:50:43,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-25 16:50:43,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-25 16:50:43,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-25 16:50:43,315 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 82 [2022-11-25 16:50:43,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 16:50:43,315 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-25 16:50:43,315 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.6) internal successors, (92), 18 states have internal predecessors, (92), 4 states have call successors, (11), 2 states have call predecessors, (11), 4 states have return successors, (12), 6 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-25 16:50:43,317 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-25 16:50:43,318 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-25 16:50:43,321 INFO L805 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-25 16:50:43,337 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-11-25 16:50:43,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 16:50:43,532 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-11-25 16:50:54,024 INFO L899 garLoopResultBuilder]: For program point L77(line 77) no Hoare annotation was computed. [2022-11-25 16:50:54,025 INFO L899 garLoopResultBuilder]: For program point L77-2(line 77) no Hoare annotation was computed. [2022-11-25 16:50:54,025 INFO L895 garLoopResultBuilder]: At program point L73(lines 28 81) the Hoare annotation is: (not (<= (mod |base2flt_#in~m| 4294967296) 0)) [2022-11-25 16:50:54,026 INFO L899 garLoopResultBuilder]: For program point L77-4(line 77) no Hoare annotation was computed. [2022-11-25 16:50:54,026 INFO L895 garLoopResultBuilder]: At program point L57-2(lines 57 72) the Hoare annotation is: (and (<= |base2flt_#in~e| base2flt_~e) (not (<= (mod |base2flt_#in~m| 4294967296) 0)) (not (= |base2flt_#in~m| 1))) [2022-11-25 16:50:54,026 INFO L899 garLoopResultBuilder]: For program point L29(lines 29 34) no Hoare annotation was computed. [2022-11-25 16:50:54,026 INFO L899 garLoopResultBuilder]: For program point L58(lines 57 72) no Hoare annotation was computed. [2022-11-25 16:50:54,026 INFO L902 garLoopResultBuilder]: At program point base2fltENTRY(lines 24 82) the Hoare annotation is: true [2022-11-25 16:50:54,026 INFO L895 garLoopResultBuilder]: At program point L79(lines 28 81) the Hoare annotation is: (or (and (= base2flt_~m |base2flt_#in~m|) (<= |base2flt_#in~e| base2flt_~e) (or (= base2flt_~e |base2flt_#in~e|) (= base2flt_~e 0)) (= base2flt_~__retres4~0 0)) (not (<= (mod |base2flt_#in~m| 4294967296) 0))) [2022-11-25 16:50:54,026 INFO L899 garLoopResultBuilder]: For program point L38(lines 37 52) no Hoare annotation was computed. [2022-11-25 16:50:54,027 INFO L899 garLoopResultBuilder]: For program point base2fltFINAL(lines 24 82) no Hoare annotation was computed. [2022-11-25 16:50:54,027 INFO L899 garLoopResultBuilder]: For program point L59(lines 57 72) no Hoare annotation was computed. [2022-11-25 16:50:54,027 INFO L899 garLoopResultBuilder]: For program point base2fltEXIT(lines 24 82) no Hoare annotation was computed. [2022-11-25 16:50:54,027 INFO L899 garLoopResultBuilder]: For program point L47(lines 47 51) no Hoare annotation was computed. [2022-11-25 16:50:54,027 INFO L895 garLoopResultBuilder]: At program point L47-1(lines 37 52) the Hoare annotation is: (not (<= (mod |base2flt_#in~m| 4294967296) 0)) [2022-11-25 16:50:54,028 INFO L899 garLoopResultBuilder]: For program point L76-1(line 76) no Hoare annotation was computed. [2022-11-25 16:50:54,028 INFO L899 garLoopResultBuilder]: For program point L76-3(line 76) no Hoare annotation was computed. [2022-11-25 16:50:54,029 INFO L899 garLoopResultBuilder]: For program point L35(lines 35 75) no Hoare annotation was computed. [2022-11-25 16:50:54,030 INFO L895 garLoopResultBuilder]: At program point L217(lines 147 219) the Hoare annotation is: (or (<= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (and (= |ULTIMATE.start_main_~tmp~2#1| 1) (= |ULTIMATE.start_main_~sa~0#1| 1)) (and (< (mod |ULTIMATE.start_mulflt_#res#1| 4294967296) 1) (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) 1) (< (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) 1))) [2022-11-25 16:50:54,030 INFO L899 garLoopResultBuilder]: For program point L176(line 176) no Hoare annotation was computed. [2022-11-25 16:50:54,030 INFO L899 garLoopResultBuilder]: For program point L176-2(line 176) no Hoare annotation was computed. [2022-11-25 16:50:54,030 INFO L899 garLoopResultBuilder]: For program point L176-4(line 176) no Hoare annotation was computed. [2022-11-25 16:50:54,030 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2022-11-25 16:50:54,031 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-11-25 16:50:54,031 INFO L899 garLoopResultBuilder]: For program point L185(lines 185 190) no Hoare annotation was computed. [2022-11-25 16:50:54,031 INFO L899 garLoopResultBuilder]: For program point L243(lines 243 252) no Hoare annotation was computed. [2022-11-25 16:50:54,031 INFO L899 garLoopResultBuilder]: For program point L243-2(lines 243 252) no Hoare annotation was computed. [2022-11-25 16:50:54,031 INFO L899 garLoopResultBuilder]: For program point L260(lines 260 264) no Hoare annotation was computed. [2022-11-25 16:50:54,032 INFO L899 garLoopResultBuilder]: For program point L194(lines 194 211) no Hoare annotation was computed. [2022-11-25 16:50:54,032 INFO L899 garLoopResultBuilder]: For program point L260-2(lines 260 264) no Hoare annotation was computed. [2022-11-25 16:50:54,033 INFO L899 garLoopResultBuilder]: For program point L194-2(lines 194 211) no Hoare annotation was computed. [2022-11-25 16:50:54,033 INFO L899 garLoopResultBuilder]: For program point L203(lines 203 208) no Hoare annotation was computed. [2022-11-25 16:50:54,033 INFO L899 garLoopResultBuilder]: For program point L195(lines 195 200) no Hoare annotation was computed. [2022-11-25 16:50:54,033 INFO L899 garLoopResultBuilder]: For program point L179(lines 179 184) no Hoare annotation was computed. [2022-11-25 16:50:54,033 INFO L899 garLoopResultBuilder]: For program point L171(line 171) no Hoare annotation was computed. [2022-11-25 16:50:54,034 INFO L899 garLoopResultBuilder]: For program point L171-2(line 171) no Hoare annotation was computed. [2022-11-25 16:50:54,034 INFO L899 garLoopResultBuilder]: For program point L171-4(line 171) no Hoare annotation was computed. [2022-11-25 16:50:54,034 INFO L899 garLoopResultBuilder]: For program point L246(lines 246 250) no Hoare annotation was computed. [2022-11-25 16:50:54,034 INFO L899 garLoopResultBuilder]: For program point L213(line 213) no Hoare annotation was computed. [2022-11-25 16:50:54,034 INFO L899 garLoopResultBuilder]: For program point L246-2(lines 246 250) no Hoare annotation was computed. [2022-11-25 16:50:54,035 INFO L899 garLoopResultBuilder]: For program point L213-2(line 213) no Hoare annotation was computed. [2022-11-25 16:50:54,035 INFO L899 garLoopResultBuilder]: For program point L213-4(line 213) no Hoare annotation was computed. [2022-11-25 16:50:54,035 INFO L902 garLoopResultBuilder]: At program point L238(line 238) the Hoare annotation is: true [2022-11-25 16:50:54,035 INFO L899 garLoopResultBuilder]: For program point L238-1(line 238) no Hoare annotation was computed. [2022-11-25 16:50:54,035 INFO L899 garLoopResultBuilder]: For program point L-1(line -1) no Hoare annotation was computed. [2022-11-25 16:50:54,036 INFO L899 garLoopResultBuilder]: For program point L214(line 214) no Hoare annotation was computed. [2022-11-25 16:50:54,036 INFO L899 garLoopResultBuilder]: For program point L214-2(line 214) no Hoare annotation was computed. [2022-11-25 16:50:54,036 INFO L899 garLoopResultBuilder]: For program point L214-4(line 214) no Hoare annotation was computed. [2022-11-25 16:50:54,037 INFO L895 garLoopResultBuilder]: At program point L239(line 239) the Hoare annotation is: (= |ULTIMATE.start_main_~zero~0#1| 0) [2022-11-25 16:50:54,037 INFO L899 garLoopResultBuilder]: For program point L239-1(line 239) no Hoare annotation was computed. [2022-11-25 16:50:54,038 INFO L899 garLoopResultBuilder]: For program point L173(line 173) no Hoare annotation was computed. [2022-11-25 16:50:54,038 INFO L899 garLoopResultBuilder]: For program point L173-2(line 173) no Hoare annotation was computed. [2022-11-25 16:50:54,038 INFO L899 garLoopResultBuilder]: For program point L173-4(line 173) no Hoare annotation was computed. [2022-11-25 16:50:54,038 INFO L899 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-11-25 16:50:54,039 INFO L899 garLoopResultBuilder]: For program point L256(lines 256 272) no Hoare annotation was computed. [2022-11-25 16:50:54,039 INFO L899 garLoopResultBuilder]: For program point L256-1(lines 256 272) no Hoare annotation was computed. [2022-11-25 16:50:54,039 INFO L895 garLoopResultBuilder]: At program point L240(line 240) the Hoare annotation is: (= |ULTIMATE.start_main_~zero~0#1| 0) [2022-11-25 16:50:54,039 INFO L899 garLoopResultBuilder]: For program point L240-1(line 240) no Hoare annotation was computed. [2022-11-25 16:50:54,040 INFO L899 garLoopResultBuilder]: For program point L174(line 174) no Hoare annotation was computed. [2022-11-25 16:50:54,040 INFO L899 garLoopResultBuilder]: For program point L174-2(line 174) no Hoare annotation was computed. [2022-11-25 16:50:54,040 INFO L899 garLoopResultBuilder]: For program point L174-4(line 174) no Hoare annotation was computed. [2022-11-25 16:50:54,040 INFO L899 garLoopResultBuilder]: For program point L257(lines 257 266) no Hoare annotation was computed. [2022-11-25 16:50:54,040 INFO L895 garLoopResultBuilder]: At program point L257-2(lines 257 266) the Hoare annotation is: (and (= 0 |ULTIMATE.start_main_~tmp___1~0#1|) (= 0 |ULTIMATE.start_main_~tmp___0~0#1|)) [2022-11-25 16:50:54,041 INFO L899 garLoopResultBuilder]: For program point L158(lines 158 164) no Hoare annotation was computed. [2022-11-25 16:50:54,041 INFO L899 garLoopResultBuilder]: For program point L158-2(lines 157 218) no Hoare annotation was computed. [2022-11-25 16:50:54,042 INFO L895 garLoopResultBuilder]: At program point L216(lines 157 218) the Hoare annotation is: (or (<= (+ |ULTIMATE.start_main_~sa~0#1| 1) 0) (and (= |ULTIMATE.start_main_~tmp~2#1| 1) (= |ULTIMATE.start_main_~sa~0#1| 1)) (and (< (mod |ULTIMATE.start_main_~zero~0#1| 4294967296) 1) (< (mod |ULTIMATE.start_mulflt_~__retres10~1#1| 4294967296) 1))) [2022-11-25 16:50:54,042 INFO L902 garLoopResultBuilder]: At program point L274(lines 220 276) the Hoare annotation is: true [2022-11-25 16:50:54,042 INFO L895 garLoopResultBuilder]: At program point L241(line 241) the Hoare annotation is: (= |ULTIMATE.start_main_~zero~0#1| 0) [2022-11-25 16:50:54,042 INFO L899 garLoopResultBuilder]: For program point L241-1(line 241) no Hoare annotation was computed. [2022-11-25 16:50:54,043 INFO L899 garLoopResultBuilder]: For program point L17(line 17) no Hoare annotation was computed. [2022-11-25 16:50:54,043 INFO L899 garLoopResultBuilder]: For program point L16(lines 16 18) no Hoare annotation was computed. [2022-11-25 16:50:54,043 INFO L902 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 20) the Hoare annotation is: true [2022-11-25 16:50:54,045 INFO L899 garLoopResultBuilder]: For program point L16-2(lines 15 20) no Hoare annotation was computed. [2022-11-25 16:50:54,046 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 15 20) no Hoare annotation was computed. [2022-11-25 16:50:54,046 INFO L899 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 17) no Hoare annotation was computed. [2022-11-25 16:50:54,052 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 16:50:54,055 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-25 16:50:54,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.11 04:50:54 BoogieIcfgContainer [2022-11-25 16:50:54,087 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-25 16:50:54,088 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-25 16:50:54,088 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-25 16:50:54,088 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-25 16:50:54,089 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 04:50:24" (3/4) ... [2022-11-25 16:50:54,093 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-25 16:50:54,102 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure base2flt [2022-11-25 16:50:54,103 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure __VERIFIER_assert [2022-11-25 16:50:54,126 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-25 16:50:54,126 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2022-11-25 16:50:54,127 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-25 16:50:54,128 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-25 16:50:54,166 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((m == \old(m) && \old(e) <= e) && (e == \old(e) || e == 0)) && __retres4 == 0) || !(\old(m) % 4294967296 <= 0) [2022-11-25 16:50:54,166 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(\old(m) % 4294967296 <= 0) [2022-11-25 16:50:54,167 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\old(e) <= e && !(\old(m) % 4294967296 <= 0)) && !(\old(m) == 1) [2022-11-25 16:50:54,167 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: !(\old(m) % 4294967296 <= 0) [2022-11-25 16:50:54,170 WARN L220 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (sa + 1 <= 0 || (tmp == 1 && sa == 1)) || ((\result % 4294967296 < 1 && zero % 4294967296 < 1) && __retres10 % 4294967296 < 1) [2022-11-25 16:50:54,216 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/witness.graphml [2022-11-25 16:50:54,216 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-25 16:50:54,217 INFO L158 Benchmark]: Toolchain (without parser) took 31636.97ms. Allocated memory was 127.9MB in the beginning and 469.8MB in the end (delta: 341.8MB). Free memory was 82.3MB in the beginning and 320.8MB in the end (delta: -238.5MB). Peak memory consumption was 106.3MB. Max. memory is 16.1GB. [2022-11-25 16:50:54,218 INFO L158 Benchmark]: CDTParser took 0.35ms. Allocated memory is still 127.9MB. Free memory was 68.3MB in the beginning and 68.2MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-25 16:50:54,218 INFO L158 Benchmark]: CACSL2BoogieTranslator took 449.82ms. Allocated memory is still 127.9MB. Free memory was 82.1MB in the beginning and 68.7MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-11-25 16:50:54,219 INFO L158 Benchmark]: Boogie Procedure Inliner took 72.24ms. Allocated memory is still 127.9MB. Free memory was 68.7MB in the beginning and 66.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-25 16:50:54,220 INFO L158 Benchmark]: Boogie Preprocessor took 71.96ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 66.7MB in the beginning and 125.7MB in the end (delta: -59.0MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. [2022-11-25 16:50:54,221 INFO L158 Benchmark]: RCFGBuilder took 917.44ms. Allocated memory is still 155.2MB. Free memory was 125.6MB in the beginning and 107.2MB in the end (delta: 18.4MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2022-11-25 16:50:54,221 INFO L158 Benchmark]: TraceAbstraction took 29986.98ms. Allocated memory was 155.2MB in the beginning and 469.8MB in the end (delta: 314.6MB). Free memory was 107.2MB in the beginning and 326.1MB in the end (delta: -218.9MB). Peak memory consumption was 267.5MB. Max. memory is 16.1GB. [2022-11-25 16:50:54,224 INFO L158 Benchmark]: Witness Printer took 128.72ms. Allocated memory is still 469.8MB. Free memory was 326.1MB in the beginning and 320.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-25 16:50:54,235 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35ms. Allocated memory is still 127.9MB. Free memory was 68.3MB in the beginning and 68.2MB in the end (delta: 117.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 449.82ms. Allocated memory is still 127.9MB. Free memory was 82.1MB in the beginning and 68.7MB in the end (delta: 13.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 72.24ms. Allocated memory is still 127.9MB. Free memory was 68.7MB in the beginning and 66.7MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 71.96ms. Allocated memory was 127.9MB in the beginning and 155.2MB in the end (delta: 27.3MB). Free memory was 66.7MB in the beginning and 125.7MB in the end (delta: -59.0MB). Peak memory consumption was 6.5MB. Max. memory is 16.1GB. * RCFGBuilder took 917.44ms. Allocated memory is still 155.2MB. Free memory was 125.6MB in the beginning and 107.2MB in the end (delta: 18.4MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * TraceAbstraction took 29986.98ms. Allocated memory was 155.2MB in the beginning and 469.8MB in the end (delta: 314.6MB). Free memory was 107.2MB in the beginning and 326.1MB in the end (delta: -218.9MB). Peak memory consumption was 267.5MB. Max. memory is 16.1GB. * Witness Printer took 128.72ms. Allocated memory is still 469.8MB. Free memory was 326.1MB in the beginning and 320.8MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 17]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 75 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 29.9s, OverallIterations: 20, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.1s, AutomataDifference: 5.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 10.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2582 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2581 mSDsluCounter, 10602 SdHoareTripleChecker+Invalid, 2.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 8800 mSDsCounter, 68 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2277 IncrementalHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 68 mSolverCounterUnsat, 1802 mSDtfsCounter, 2277 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1948 GetRequests, 1682 SyntacticMatches, 2 SemanticMatches, 264 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 782 ImplicationChecksByTransitivity, 3.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=151occurred in iteration=6, InterpolantAutomatonStates: 175, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 20 MinimizatonAttempts, 548 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 14 LocationsWithAnnotation, 158 PreInvPairs, 350 NumberOfFragments, 123 HoareAnnotationTreeSize, 158 FomulaSimplifications, 97065 FormulaSimplificationTreeSizeReduction, 9.4s HoareSimplificationTime, 14 FomulaSimplificationsInter, 78512 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 8.0s InterpolantComputationTime, 2168 NumberOfCodeBlocks, 2168 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 2823 ConstructedInterpolants, 0 QuantifiedInterpolants, 5278 SizeOfPredicates, 65 NumberOfNonLiveVariables, 2760 ConjunctsInSsa, 174 ConjunctsInUnsatCore, 45 InterpolantComputations, 13 PerfectInterpolantSequences, 1308/1570 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: !(\old(m) % 4294967296 <= 0) - InvariantResult [Line: 220]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 157]: Loop Invariant Derived loop invariant: (sa + 1 <= 0 || (tmp == 1 && sa == 1)) || (zero % 4294967296 < 1 && __retres10 % 4294967296 < 1) - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: (sa + 1 <= 0 || (tmp == 1 && sa == 1)) || ((\result % 4294967296 < 1 && zero % 4294967296 < 1) && __retres10 % 4294967296 < 1) - InvariantResult [Line: 28]: Loop Invariant Derived loop invariant: (((m == \old(m) && \old(e) <= e) && (e == \old(e) || e == 0)) && __retres4 == 0) || !(\old(m) % 4294967296 <= 0) - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: !(\old(m) % 4294967296 <= 0) - InvariantResult [Line: 57]: Loop Invariant Derived loop invariant: (\old(e) <= e && !(\old(m) % 4294967296 <= 0)) && !(\old(m) == 1) RESULT: Ultimate proved your program to be correct! [2022-11-25 16:50:54,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1d633ff1-0560-4dbf-8a0e-ca5f221b4f95/bin/uautomizer-ZsLfNo2U6R/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE