./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e587d407128aaafd417211e5ccf66790913a0bc1afeba03ae0cdb578f5831614 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-24 10:39:30,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-24 10:39:30,019 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-24 10:39:30,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-24 10:39:30,067 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-24 10:39:30,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-24 10:39:30,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-24 10:39:30,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-24 10:39:30,074 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-24 10:39:30,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-24 10:39:30,077 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-24 10:39:30,078 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-24 10:39:30,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-24 10:39:30,080 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-24 10:39:30,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-24 10:39:30,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-24 10:39:30,085 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-24 10:39:30,086 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-24 10:39:30,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-24 10:39:30,092 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-24 10:39:30,094 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-24 10:39:30,096 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-24 10:39:30,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-24 10:39:30,099 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-24 10:39:30,103 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-24 10:39:30,104 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-24 10:39:30,104 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-24 10:39:30,105 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-24 10:39:30,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-24 10:39:30,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-24 10:39:30,108 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-24 10:39:30,109 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-24 10:39:30,110 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-24 10:39:30,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-24 10:39:30,112 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-24 10:39:30,112 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-24 10:39:30,119 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-24 10:39:30,119 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-24 10:39:30,119 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-24 10:39:30,120 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-24 10:39:30,121 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-24 10:39:30,123 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-24 10:39:30,153 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-24 10:39:30,153 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-24 10:39:30,154 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-24 10:39:30,154 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-24 10:39:30,154 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-24 10:39:30,154 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-24 10:39:30,155 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-24 10:39:30,155 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-24 10:39:30,155 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-24 10:39:30,155 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-24 10:39:30,155 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-24 10:39:30,156 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-24 10:39:30,156 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-24 10:39:30,156 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-24 10:39:30,156 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-24 10:39:30,157 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-24 10:39:30,157 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-24 10:39:30,157 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-24 10:39:30,158 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-24 10:39:30,158 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-24 10:39:30,158 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-24 10:39:30,158 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-24 10:39:30,158 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-24 10:39:30,159 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-24 10:39:30,159 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-24 10:39:30,159 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-24 10:39:30,159 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-24 10:39:30,159 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-24 10:39:30,160 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-24 10:39:30,160 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-24 10:39:30,160 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:39:30,160 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-24 10:39:30,161 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-24 10:39:30,161 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-24 10:39:30,161 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-24 10:39:30,161 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-24 10:39:30,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-24 10:39:30,162 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-24 10:39:30,162 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-24 10:39:30,162 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e587d407128aaafd417211e5ccf66790913a0bc1afeba03ae0cdb578f5831614 [2021-10-24 10:39:30,408 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-24 10:39:30,430 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-24 10:39:30,432 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-24 10:39:30,433 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-24 10:39:30,434 INFO L275 PluginConnector]: CDTParser initialized [2021-10-24 10:39:30,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound20.c [2021-10-24 10:39:30,514 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/data/15d765646/3c3b8a8a084f40629f8cad89d08eaec8/FLAGc43b18b21 [2021-10-24 10:39:31,043 INFO L306 CDTParser]: Found 1 translation units. [2021-10-24 10:39:31,044 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound20.c [2021-10-24 10:39:31,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/data/15d765646/3c3b8a8a084f40629f8cad89d08eaec8/FLAGc43b18b21 [2021-10-24 10:39:31,445 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/data/15d765646/3c3b8a8a084f40629f8cad89d08eaec8 [2021-10-24 10:39:31,447 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-24 10:39:31,448 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-24 10:39:31,454 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-24 10:39:31,454 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-24 10:39:31,458 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-24 10:39:31,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:39:31" (1/1) ... [2021-10-24 10:39:31,459 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40fc28c2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:39:31, skipping insertion in model container [2021-10-24 10:39:31,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.10 10:39:31" (1/1) ... [2021-10-24 10:39:31,467 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-24 10:39:31,491 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-24 10:39:31,673 WARN L228 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_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound20.c[490,503] [2021-10-24 10:39:31,693 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:39:31,702 INFO L203 MainTranslator]: Completed pre-run [2021-10-24 10:39:31,723 WARN L228 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_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_valuebound20.c[490,503] [2021-10-24 10:39:31,740 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-24 10:39:31,758 INFO L208 MainTranslator]: Completed translation [2021-10-24 10:39:31,759 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:39:31 WrapperNode [2021-10-24 10:39:31,759 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-24 10:39:31,760 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-24 10:39:31,760 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-24 10:39:31,760 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-24 10:39:31,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:39:31" (1/1) ... [2021-10-24 10:39:31,786 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:39:31" (1/1) ... [2021-10-24 10:39:31,820 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-24 10:39:31,821 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-24 10:39:31,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-24 10:39:31,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-24 10:39:31,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:39:31" (1/1) ... [2021-10-24 10:39:31,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:39:31" (1/1) ... [2021-10-24 10:39:31,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:39:31" (1/1) ... [2021-10-24 10:39:31,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:39:31" (1/1) ... [2021-10-24 10:39:31,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:39:31" (1/1) ... [2021-10-24 10:39:31,858 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:39:31" (1/1) ... [2021-10-24 10:39:31,859 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:39:31" (1/1) ... [2021-10-24 10:39:31,861 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-24 10:39:31,862 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-24 10:39:31,862 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-24 10:39:31,863 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-24 10:39:31,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:39:31" (1/1) ... [2021-10-24 10:39:31,875 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-24 10:39:31,888 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:39:31,907 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-24 10:39:31,941 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-24 10:39:31,962 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-24 10:39:31,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-24 10:39:31,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-24 10:39:31,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-24 10:39:32,542 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-24 10:39:32,543 INFO L299 CfgBuilder]: Removed 30 assume(true) statements. [2021-10-24 10:39:32,545 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:39:32 BoogieIcfgContainer [2021-10-24 10:39:32,546 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-24 10:39:32,548 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-24 10:39:32,553 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-24 10:39:32,557 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-24 10:39:32,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.10 10:39:31" (1/3) ... [2021-10-24 10:39:32,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1844e491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:39:32, skipping insertion in model container [2021-10-24 10:39:32,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.10 10:39:31" (2/3) ... [2021-10-24 10:39:32,559 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1844e491 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.10 10:39:32, skipping insertion in model container [2021-10-24 10:39:32,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:39:32" (3/3) ... [2021-10-24 10:39:32,562 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_valuebound20.c [2021-10-24 10:39:32,568 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-24 10:39:32,569 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-10-24 10:39:32,639 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-24 10:39:32,651 INFO L339 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=FINITE_AUTOMATA, 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, mLoopAccelerationTechnique=FAST_UPR [2021-10-24 10:39:32,652 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-10-24 10:39:32,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 31 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 30 states have internal predecessors, (40), 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) [2021-10-24 10:39:32,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2021-10-24 10:39:32,676 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:39:32,677 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2021-10-24 10:39:32,678 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:39:32,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:39:32,683 INFO L82 PathProgramCache]: Analyzing trace with hash 189681377, now seen corresponding path program 1 times [2021-10-24 10:39:32,693 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:39:32,694 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582402734] [2021-10-24 10:39:32,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:39:32,695 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:39:32,762 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:39:32,763 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [999375513] [2021-10-24 10:39:32,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:39:32,764 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:39:32,764 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:39:32,766 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:39:32,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-10-24 10:39:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:39:32,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2021-10-24 10:39:32,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:39:32,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:39:32,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:39:32,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:39:32,930 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:39:32,930 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582402734] [2021-10-24 10:39:32,931 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:39:32,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999375513] [2021-10-24 10:39:32,933 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999375513] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:39:32,934 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:39:32,934 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:39:32,936 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727264617] [2021-10-24 10:39:32,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-24 10:39:32,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:39:32,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-24 10:39:32,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:39:32,961 INFO L87 Difference]: Start difference. First operand has 31 states, 24 states have (on average 1.6666666666666667) internal successors, (40), 30 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:39:32,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:39:32,974 INFO L93 Difference]: Finished difference Result 61 states and 79 transitions. [2021-10-24 10:39:32,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:39:32,975 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2021-10-24 10:39:32,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:39:32,984 INFO L225 Difference]: With dead ends: 61 [2021-10-24 10:39:32,984 INFO L226 Difference]: Without dead ends: 29 [2021-10-24 10:39:32,987 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-24 10:39:33,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-10-24 10:39:33,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-10-24 10:39:33,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 28 states have internal predecessors, (30), 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) [2021-10-24 10:39:33,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-24 10:39:33,021 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 5 [2021-10-24 10:39:33,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:39:33,022 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-24 10:39:33,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:39:33,022 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-24 10:39:33,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:39:33,023 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:39:33,023 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:39:33,061 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-10-24 10:39:33,249 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:39:33,249 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:39:33,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:39:33,250 INFO L82 PathProgramCache]: Analyzing trace with hash 1480645745, now seen corresponding path program 1 times [2021-10-24 10:39:33,250 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:39:33,250 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130829052] [2021-10-24 10:39:33,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:39:33,250 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:39:33,260 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:39:33,260 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1310869086] [2021-10-24 10:39:33,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:39:33,272 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:39:33,272 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:39:33,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:39:33,284 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-10-24 10:39:33,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:39:33,331 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 3 conjunts are in the unsatisfiable core [2021-10-24 10:39:33,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:39:33,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:39:33,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:39:33,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:39:33,450 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:39:33,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130829052] [2021-10-24 10:39:33,456 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:39:33,456 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1310869086] [2021-10-24 10:39:33,456 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1310869086] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:39:33,457 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:39:33,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-10-24 10:39:33,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718265609] [2021-10-24 10:39:33,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-24 10:39:33,459 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:39:33,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-24 10:39:33,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:39:33,460 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-24 10:39:33,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:39:33,508 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2021-10-24 10:39:33,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-24 10:39:33,509 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 10:39:33,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:39:33,510 INFO L225 Difference]: With dead ends: 57 [2021-10-24 10:39:33,510 INFO L226 Difference]: Without dead ends: 49 [2021-10-24 10:39:33,511 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 11.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-24 10:39:33,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2021-10-24 10:39:33,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 31. [2021-10-24 10:39:33,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 25 states have (on average 1.28) internal successors, (32), 30 states have internal predecessors, (32), 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) [2021-10-24 10:39:33,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2021-10-24 10:39:33,517 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 6 [2021-10-24 10:39:33,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:39:33,518 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2021-10-24 10:39:33,518 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2021-10-24 10:39:33,518 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2021-10-24 10:39:33,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2021-10-24 10:39:33,519 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:39:33,519 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2021-10-24 10:39:33,551 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-10-24 10:39:33,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:39:33,720 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:39:33,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:39:33,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1480649719, now seen corresponding path program 1 times [2021-10-24 10:39:33,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:39:33,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375876375] [2021-10-24 10:39:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:39:33,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:39:33,740 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:39:33,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1319787062] [2021-10-24 10:39:33,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:39:33,741 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:39:33,741 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:39:33,742 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:39:33,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-10-24 10:39:33,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:39:33,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 9 conjunts are in the unsatisfiable core [2021-10-24 10:39:33,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:39:33,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:39:33,876 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:39:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:39:33,946 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:39:33,946 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375876375] [2021-10-24 10:39:33,947 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:39:33,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319787062] [2021-10-24 10:39:33,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319787062] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:39:33,948 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:39:33,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-10-24 10:39:33,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5059736] [2021-10-24 10:39:33,952 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-24 10:39:33,952 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:39:33,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-24 10:39:33,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:39:33,954 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:39:34,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:39:34,235 INFO L93 Difference]: Finished difference Result 63 states and 68 transitions. [2021-10-24 10:39:34,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-10-24 10:39:34,235 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2021-10-24 10:39:34,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:39:34,237 INFO L225 Difference]: With dead ends: 63 [2021-10-24 10:39:34,237 INFO L226 Difference]: Without dead ends: 61 [2021-10-24 10:39:34,237 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 66.0ms TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-10-24 10:39:34,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-10-24 10:39:34,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 29. [2021-10-24 10:39:34,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 24 states have (on average 1.25) internal successors, (30), 28 states have internal predecessors, (30), 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) [2021-10-24 10:39:34,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2021-10-24 10:39:34,244 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 6 [2021-10-24 10:39:34,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:39:34,244 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2021-10-24 10:39:34,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 6 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-24 10:39:34,245 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2021-10-24 10:39:34,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-24 10:39:34,245 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:39:34,245 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:39:34,283 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-10-24 10:39:34,459 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-10-24 10:39:34,459 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:39:34,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:39:34,460 INFO L82 PathProgramCache]: Analyzing trace with hash 1270362266, now seen corresponding path program 1 times [2021-10-24 10:39:34,460 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:39:34,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495068281] [2021-10-24 10:39:34,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:39:34,461 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:39:34,466 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:39:34,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1801193856] [2021-10-24 10:39:34,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:39:34,467 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:39:34,467 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:39:34,468 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:39:34,477 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-10-24 10:39:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:39:34,528 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2021-10-24 10:39:34,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:39:34,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:39:34,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:39:34,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:39:34,799 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:39:34,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495068281] [2021-10-24 10:39:34,799 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:39:34,799 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1801193856] [2021-10-24 10:39:34,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1801193856] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:39:34,800 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:39:34,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:39:34,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201197393] [2021-10-24 10:39:34,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:39:34,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:39:34,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:39:34,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:39:34,802 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-24 10:39:34,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:39:34,920 INFO L93 Difference]: Finished difference Result 45 states and 47 transitions. [2021-10-24 10:39:34,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:39:34,921 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-24 10:39:34,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:39:34,922 INFO L225 Difference]: With dead ends: 45 [2021-10-24 10:39:34,922 INFO L226 Difference]: Without dead ends: 43 [2021-10-24 10:39:34,923 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 33.0ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:39:34,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2021-10-24 10:39:34,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 38. [2021-10-24 10:39:34,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.2727272727272727) internal successors, (42), 37 states have internal predecessors, (42), 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) [2021-10-24 10:39:34,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2021-10-24 10:39:34,930 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 8 [2021-10-24 10:39:34,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:39:34,930 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2021-10-24 10:39:34,930 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-24 10:39:34,931 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2021-10-24 10:39:34,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-24 10:39:34,931 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:39:34,931 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:39:34,979 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-10-24 10:39:35,132 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:39:35,132 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:39:35,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:39:35,132 INFO L82 PathProgramCache]: Analyzing trace with hash 1047583197, now seen corresponding path program 1 times [2021-10-24 10:39:35,133 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:39:35,133 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009101646] [2021-10-24 10:39:35,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:39:35,133 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:39:35,151 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:39:35,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897210698] [2021-10-24 10:39:35,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:39:35,152 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:39:35,152 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:39:35,154 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:39:35,165 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-10-24 10:39:35,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:39:35,243 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 11 conjunts are in the unsatisfiable core [2021-10-24 10:39:35,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:39:35,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:39:35,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:39:35,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:39:35,473 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:39:35,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009101646] [2021-10-24 10:39:35,473 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:39:35,473 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897210698] [2021-10-24 10:39:35,474 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897210698] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:39:35,474 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:39:35,474 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-10-24 10:39:35,474 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127660155] [2021-10-24 10:39:35,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-24 10:39:35,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:39:35,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-24 10:39:35,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-10-24 10:39:35,476 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-10-24 10:39:35,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:39:35,561 INFO L93 Difference]: Finished difference Result 43 states and 45 transitions. [2021-10-24 10:39:35,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-24 10:39:35,562 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2021-10-24 10:39:35,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:39:35,564 INFO L225 Difference]: With dead ends: 43 [2021-10-24 10:39:35,564 INFO L226 Difference]: Without dead ends: 41 [2021-10-24 10:39:35,565 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 30.6ms TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-10-24 10:39:35,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2021-10-24 10:39:35,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2021-10-24 10:39:35,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 33 states have (on average 1.2424242424242424) internal successors, (41), 37 states have internal predecessors, (41), 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) [2021-10-24 10:39:35,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2021-10-24 10:39:35,585 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 10 [2021-10-24 10:39:35,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:39:35,585 INFO L470 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2021-10-24 10:39:35,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 4 states have internal predecessors, (18), 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) [2021-10-24 10:39:35,586 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2021-10-24 10:39:35,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-24 10:39:35,586 INFO L504 BasicCegarLoop]: Found error trace [2021-10-24 10:39:35,586 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-24 10:39:35,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-10-24 10:39:35,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:39:35,810 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-10-24 10:39:35,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-24 10:39:35,810 INFO L82 PathProgramCache]: Analyzing trace with hash 1705263040, now seen corresponding path program 1 times [2021-10-24 10:39:35,810 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-24 10:39:35,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381334294] [2021-10-24 10:39:35,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:39:35,811 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-24 10:39:35,815 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-10-24 10:39:35,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1465160474] [2021-10-24 10:39:35,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-24 10:39:35,816 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:39:35,816 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 [2021-10-24 10:39:35,821 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-10-24 10:39:35,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-10-24 10:39:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-24 10:39:35,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 21 conjunts are in the unsatisfiable core [2021-10-24 10:39:35,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-24 10:39:36,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:39:36,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-24 10:39:40,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-24 10:39:40,835 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-24 10:39:40,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381334294] [2021-10-24 10:39:40,835 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-10-24 10:39:40,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465160474] [2021-10-24 10:39:40,836 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465160474] provided 2 perfect and 0 imperfect interpolant sequences [2021-10-24 10:39:40,836 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-10-24 10:39:40,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 7] imperfect sequences [] total 10 [2021-10-24 10:39:40,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660035335] [2021-10-24 10:39:40,837 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-10-24 10:39:40,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-24 10:39:40,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-10-24 10:39:40,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=68, Unknown=2, NotChecked=0, Total=110 [2021-10-24 10:39:40,838 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 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) [2021-10-24 10:39:40,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-24 10:39:40,851 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2021-10-24 10:39:40,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-24 10:39:40,852 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2021-10-24 10:39:40,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-24 10:39:40,852 INFO L225 Difference]: With dead ends: 38 [2021-10-24 10:39:40,852 INFO L226 Difference]: Without dead ends: 0 [2021-10-24 10:39:40,853 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 4351.3ms TimeCoverageRelationStatistics Valid=40, Invalid=68, Unknown=2, NotChecked=0, Total=110 [2021-10-24 10:39:40,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-24 10:39:40,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-24 10:39:40,853 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) [2021-10-24 10:39:40,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-24 10:39:40,854 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2021-10-24 10:39:40,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-24 10:39:40,854 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-24 10:39:40,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 2.0) internal successors, (22), 10 states have internal predecessors, (22), 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) [2021-10-24 10:39:40,854 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-24 10:39:40,854 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-24 10:39:40,857 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:39:40,857 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:39:40,857 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:39:40,858 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:39:40,858 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:39:40,858 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-24 10:39:40,904 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-10-24 10:39:41,069 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-24 10:39:41,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-24 10:39:41,074 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:39:41,076 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:39:41,078 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:39:41,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:39:41,079 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:39:41,080 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:39:41,081 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:39:41,085 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-24 10:39:41,096 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:39:41,096 INFO L857 garLoopResultBuilder]: For program point L11(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:39:41,097 INFO L853 garLoopResultBuilder]: At program point L11-2(lines 10 16) the Hoare annotation is: false [2021-10-24 10:39:41,097 INFO L857 garLoopResultBuilder]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:39:41,097 INFO L853 garLoopResultBuilder]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2021-10-24 10:39:41,097 INFO L857 garLoopResultBuilder]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:39:41,097 INFO L853 garLoopResultBuilder]: At program point L11-8(lines 10 16) the Hoare annotation is: false [2021-10-24 10:39:41,098 INFO L857 garLoopResultBuilder]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:39:41,098 INFO L853 garLoopResultBuilder]: At program point L11-11(lines 52 53) the Hoare annotation is: false [2021-10-24 10:39:41,098 INFO L857 garLoopResultBuilder]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:39:41,098 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:39:41,098 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-24 10:39:41,099 INFO L853 garLoopResultBuilder]: At program point L11-14(lines 10 16) the Hoare annotation is: false [2021-10-24 10:39:41,099 INFO L857 garLoopResultBuilder]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2021-10-24 10:39:41,099 INFO L860 garLoopResultBuilder]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2021-10-24 10:39:41,099 INFO L857 garLoopResultBuilder]: For program point L12(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:39:41,099 INFO L857 garLoopResultBuilder]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:39:41,100 INFO L857 garLoopResultBuilder]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:39:41,100 INFO L857 garLoopResultBuilder]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:39:41,100 INFO L857 garLoopResultBuilder]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:39:41,100 INFO L857 garLoopResultBuilder]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2021-10-24 10:39:41,100 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:39:41,100 INFO L853 garLoopResultBuilder]: At program point L47-2(lines 47 56) the Hoare annotation is: false [2021-10-24 10:39:41,101 INFO L857 garLoopResultBuilder]: For program point L47-3(lines 47 56) no Hoare annotation was computed. [2021-10-24 10:39:41,101 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:39:41,101 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:39:41,101 INFO L853 garLoopResultBuilder]: At program point L41-1(lines 7 68) the Hoare annotation is: false [2021-10-24 10:39:41,101 INFO L857 garLoopResultBuilder]: For program point L41-2(lines 41 68) no Hoare annotation was computed. [2021-10-24 10:39:41,102 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-24 10:39:41,102 INFO L857 garLoopResultBuilder]: For program point L42(lines 42 43) no Hoare annotation was computed. [2021-10-24 10:39:41,102 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2021-10-24 10:39:41,106 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-24 10:39:41,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.10 10:39:41 BoogieIcfgContainer [2021-10-24 10:39:41,114 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-24 10:39:41,115 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-24 10:39:41,115 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-24 10:39:41,115 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-24 10:39:41,116 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.10 10:39:32" (3/4) ... [2021-10-24 10:39:41,119 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-24 10:39:41,129 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 27 nodes and edges [2021-10-24 10:39:41,130 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-24 10:39:41,130 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-10-24 10:39:41,130 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-24 10:39:41,182 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/witness.graphml [2021-10-24 10:39:41,182 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-24 10:39:41,184 INFO L168 Benchmark]: Toolchain (without parser) took 9734.67 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 80.0 MB in the beginning and 76.0 MB in the end (delta: 4.0 MB). Peak memory consumption was 28.8 MB. Max. memory is 16.1 GB. [2021-10-24 10:39:41,184 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 113.2 MB. Free memory is still 68.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:39:41,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.13 ms. Allocated memory is still 113.2 MB. Free memory was 80.0 MB in the beginning and 87.6 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-24 10:39:41,185 INFO L168 Benchmark]: Boogie Procedure Inliner took 60.01 ms. Allocated memory is still 113.2 MB. Free memory was 87.2 MB in the beginning and 85.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-24 10:39:41,186 INFO L168 Benchmark]: Boogie Preprocessor took 40.76 ms. Allocated memory is still 113.2 MB. Free memory was 85.5 MB in the beginning and 84.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-24 10:39:41,186 INFO L168 Benchmark]: RCFGBuilder took 683.55 ms. Allocated memory is still 113.2 MB. Free memory was 84.1 MB in the beginning and 65.0 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2021-10-24 10:39:41,187 INFO L168 Benchmark]: TraceAbstraction took 8566.58 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 64.5 MB in the beginning and 80.2 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. [2021-10-24 10:39:41,187 INFO L168 Benchmark]: Witness Printer took 67.78 ms. Allocated memory is still 138.4 MB. Free memory was 80.2 MB in the beginning and 76.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-24 10:39:41,189 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 113.2 MB. Free memory is still 68.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 305.13 ms. Allocated memory is still 113.2 MB. Free memory was 80.0 MB in the beginning and 87.6 MB in the end (delta: -7.6 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 60.01 ms. Allocated memory is still 113.2 MB. Free memory was 87.2 MB in the beginning and 85.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 40.76 ms. Allocated memory is still 113.2 MB. Free memory was 85.5 MB in the beginning and 84.1 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 683.55 ms. Allocated memory is still 113.2 MB. Free memory was 84.1 MB in the beginning and 65.0 MB in the end (delta: 19.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 8566.58 ms. Allocated memory was 113.2 MB in the beginning and 138.4 MB in the end (delta: 25.2 MB). Free memory was 64.5 MB in the beginning and 80.2 MB in the end (delta: -15.7 MB). Peak memory consumption was 10.9 MB. Max. memory is 16.1 GB. * Witness Printer took 67.78 ms. Allocated memory is still 138.4 MB. Free memory was 80.2 MB in the beginning and 76.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: 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 1 procedures, 31 locations, 6 error locations. Started 1 CEGAR loops. OverallTime: 8469.6ms, OverallIterations: 6, TraceHistogramMax: 1, EmptinessCheckTime: 12.2ms, AutomataDifference: 608.3ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 26.5ms, InitialAbstractionConstructionTime: 14.9ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 115 SDtfs, 99 SDslu, 158 SDs, 0 SdLazy, 162 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 332.0ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 57 SyntacticMatches, 6 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 4492.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=4, InterpolantAutomatonStates: 24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 59.8ms AutomataMinimizationTime, 6 MinimizatonAttempts, 58 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 13.6ms HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 7.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 43.3ms SsaConstructionTime, 101.7ms SatisfiabilityAnalysisTime, 5748.3ms InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 82 ConstructedInterpolants, 4 QuantifiedInterpolants, 762 SizeOfPredicates, 39 NumberOfNonLiveVariables, 490 ConjunctsInSsa, 57 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 0/0 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 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-24 10:39:41,207 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_4602c7a4-a5a7-41fb-bc75-34a52fbbb314/bin/utaipan-9zjyvhn0QE/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...