./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound20.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan --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 e28dece7c557d04b250d1b8a0324022ff350e7d3 ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-22 12:51:53,061 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-22 12:51:53,063 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-22 12:51:53,124 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-22 12:51:53,125 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-22 12:51:53,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-22 12:51:53,152 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-22 12:51:53,154 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-22 12:51:53,156 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-22 12:51:53,158 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-22 12:51:53,159 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-22 12:51:53,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-22 12:51:53,161 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-22 12:51:53,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-22 12:51:53,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-22 12:51:53,166 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-22 12:51:53,167 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-22 12:51:53,168 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-22 12:51:53,171 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-22 12:51:53,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-22 12:51:53,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-22 12:51:53,178 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-22 12:51:53,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-22 12:51:53,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-22 12:51:53,185 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-22 12:51:53,185 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-22 12:51:53,186 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-22 12:51:53,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-22 12:51:53,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-22 12:51:53,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-22 12:51:53,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-22 12:51:53,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-22 12:51:53,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-22 12:51:53,193 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-22 12:51:53,194 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-22 12:51:53,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-22 12:51:53,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-22 12:51:53,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-22 12:51:53,197 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-22 12:51:53,198 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-22 12:51:53,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-22 12:51:53,204 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-22 12:51:53,256 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-22 12:51:53,257 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-22 12:51:53,259 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-22 12:51:53,259 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-22 12:51:53,259 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-22 12:51:53,259 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-22 12:51:53,260 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-22 12:51:53,260 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-22 12:51:53,260 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-22 12:51:53,260 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-22 12:51:53,262 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-22 12:51:53,262 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-22 12:51:53,262 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-22 12:51:53,262 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-22 12:51:53,263 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-22 12:51:53,263 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-22 12:51:53,264 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-22 12:51:53,264 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-22 12:51:53,264 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-22 12:51:53,264 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-22 12:51:53,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-22 12:51:53,265 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-22 12:51:53,265 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-22 12:51:53,265 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-22 12:51:53,265 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-22 12:51:53,266 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-22 12:51:53,266 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-22 12:51:53,266 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-22 12:51:53,266 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-22 12:51:53,268 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-22 12:51:53,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-22 12:51:53,269 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:51:53,269 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-22 12:51:53,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-22 12:51:53,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-22 12:51:53,270 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-22 12:51:53,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-22 12:51:53,270 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-22 12:51:53,271 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-22 12:51:53,271 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-22 12:51:53,271 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-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e28dece7c557d04b250d1b8a0324022ff350e7d3 [2020-11-22 12:51:53,591 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-22 12:51:53,645 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-22 12:51:53,649 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-22 12:51:53,651 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-22 12:51:53,652 INFO L275 PluginConnector]: CDTParser initialized [2020-11-22 12:51:53,653 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound20.c [2020-11-22 12:51:53,743 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/data/f9563baf8/51805c72e5de439eaf9549fb6f0e2a17/FLAG930efd414 [2020-11-22 12:51:54,274 INFO L306 CDTParser]: Found 1 translation units. [2020-11-22 12:51:54,275 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound20.c [2020-11-22 12:51:54,288 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/data/f9563baf8/51805c72e5de439eaf9549fb6f0e2a17/FLAG930efd414 [2020-11-22 12:51:54,636 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/data/f9563baf8/51805c72e5de439eaf9549fb6f0e2a17 [2020-11-22 12:51:54,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-22 12:51:54,640 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-22 12:51:54,643 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-22 12:51:54,643 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-22 12:51:54,646 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-22 12:51:54,647 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:51:54" (1/1) ... [2020-11-22 12:51:54,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d13cb9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:54, skipping insertion in model container [2020-11-22 12:51:54,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 12:51:54" (1/1) ... [2020-11-22 12:51:54,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-22 12:51:54,676 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-22 12:51:54,940 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:51:54,958 INFO L203 MainTranslator]: Completed pre-run [2020-11-22 12:51:55,002 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-22 12:51:55,021 INFO L208 MainTranslator]: Completed translation [2020-11-22 12:51:55,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:55 WrapperNode [2020-11-22 12:51:55,025 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-22 12:51:55,026 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-22 12:51:55,026 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-22 12:51:55,026 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-22 12:51:55,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:55" (1/1) ... [2020-11-22 12:51:55,057 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:55" (1/1) ... [2020-11-22 12:51:55,090 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-22 12:51:55,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-22 12:51:55,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-22 12:51:55,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-22 12:51:55,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:55" (1/1) ... [2020-11-22 12:51:55,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:55" (1/1) ... [2020-11-22 12:51:55,109 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:55" (1/1) ... [2020-11-22 12:51:55,110 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:55" (1/1) ... [2020-11-22 12:51:55,129 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:55" (1/1) ... [2020-11-22 12:51:55,142 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:55" (1/1) ... [2020-11-22 12:51:55,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:55" (1/1) ... [2020-11-22 12:51:55,146 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-22 12:51:55,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-22 12:51:55,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-22 12:51:55,152 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-22 12:51:55,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-22 12:51:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-22 12:51:55,236 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-22 12:51:55,237 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-22 12:51:55,237 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-22 12:51:56,107 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-22 12:51:56,109 INFO L298 CfgBuilder]: Removed 38 assume(true) statements. [2020-11-22 12:51:56,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:56 BoogieIcfgContainer [2020-11-22 12:51:56,113 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-22 12:51:56,116 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-22 12:51:56,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-22 12:51:56,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-22 12:51:56,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 12:51:54" (1/3) ... [2020-11-22 12:51:56,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce42246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:51:56, skipping insertion in model container [2020-11-22 12:51:56,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 12:51:55" (2/3) ... [2020-11-22 12:51:56,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3ce42246 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 12:51:56, skipping insertion in model container [2020-11-22 12:51:56,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:56" (3/3) ... [2020-11-22 12:51:56,134 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound20.c [2020-11-22 12:51:56,148 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-22 12:51:56,153 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-11-22 12:51:56,168 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-11-22 12:51:56,213 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-22 12:51:56,213 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-22 12:51:56,214 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-22 12:51:56,214 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-22 12:51:56,214 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-22 12:51:56,214 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-22 12:51:56,214 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-22 12:51:56,214 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-22 12:51:56,247 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-11-22 12:51:56,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-22 12:51:56,253 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:51:56,253 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-22 12:51:56,254 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:51:56,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:51:56,261 INFO L82 PathProgramCache]: Analyzing trace with hash 175224798, now seen corresponding path program 1 times [2020-11-22 12:51:56,273 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:51:56,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333728573] [2020-11-22 12:51:56,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:51:56,365 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:51:56,366 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2021397990] [2020-11-22 12:51:56,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:51:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:51:56,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-22 12:51:56,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:51:56,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:51:56,477 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:51:56,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:51:56,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333728573] [2020-11-22 12:51:56,480 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:51:56,480 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2021397990] [2020-11-22 12:51:56,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:51:56,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:51:56,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146473009] [2020-11-22 12:51:56,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-22 12:51:56,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:51:56,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-22 12:51:56,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:51:56,505 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-11-22 12:51:56,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:51:56,539 INFO L93 Difference]: Finished difference Result 65 states and 87 transitions. [2020-11-22 12:51:56,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:51:56,541 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-11-22 12:51:56,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:51:56,557 INFO L225 Difference]: With dead ends: 65 [2020-11-22 12:51:56,557 INFO L226 Difference]: Without dead ends: 31 [2020-11-22 12:51:56,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-22 12:51:56,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-22 12:51:56,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-22 12:51:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-22 12:51:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-22 12:51:56,591 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 5 [2020-11-22 12:51:56,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:51:56,591 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-22 12:51:56,592 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-22 12:51:56,592 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-22 12:51:56,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-22 12:51:56,592 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:51:56,593 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-22 12:51:56,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-22 12:51:56,805 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:51:56,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:51:56,806 INFO L82 PathProgramCache]: Analyzing trace with hash 1062670071, now seen corresponding path program 1 times [2020-11-22 12:51:56,806 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:51:56,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841686316] [2020-11-22 12:51:56,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:51:56,814 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:51:56,814 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121968443] [2020-11-22 12:51:56,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:51:56,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:51:56,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:51:56,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:51:56,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:51:56,970 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:51:57,004 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:51:57,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841686316] [2020-11-22 12:51:57,005 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:51:57,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121968443] [2020-11-22 12:51:57,006 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:51:57,006 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-11-22 12:51:57,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489690163] [2020-11-22 12:51:57,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:51:57,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:51:57,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:51:57,010 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:51:57,010 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2020-11-22 12:51:57,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:51:57,070 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-11-22 12:51:57,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-22 12:51:57,071 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-11-22 12:51:57,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:51:57,072 INFO L225 Difference]: With dead ends: 51 [2020-11-22 12:51:57,072 INFO L226 Difference]: Without dead ends: 43 [2020-11-22 12:51:57,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-11-22 12:51:57,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-22 12:51:57,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2020-11-22 12:51:57,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-22 12:51:57,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-11-22 12:51:57,084 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 6 [2020-11-22 12:51:57,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:51:57,085 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-11-22 12:51:57,085 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:51:57,085 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-11-22 12:51:57,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-22 12:51:57,087 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:51:57,088 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:51:57,300 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:51:57,302 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:51:57,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:51:57,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1417266903, now seen corresponding path program 1 times [2020-11-22 12:51:57,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:51:57,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541875171] [2020-11-22 12:51:57,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:51:57,315 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:51:57,315 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [997249071] [2020-11-22 12:51:57,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:51:57,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:51:57,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-22 12:51:57,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:51:57,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:51:57,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:51:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:51:57,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541875171] [2020-11-22 12:51:57,417 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:51:57,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [997249071] [2020-11-22 12:51:57,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:51:57,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-22 12:51:57,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025413505] [2020-11-22 12:51:57,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-22 12:51:57,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:51:57,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-22 12:51:57,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:51:57,420 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 3 states. [2020-11-22 12:51:57,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:51:57,479 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-11-22 12:51:57,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-22 12:51:57,480 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-11-22 12:51:57,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:51:57,481 INFO L225 Difference]: With dead ends: 61 [2020-11-22 12:51:57,481 INFO L226 Difference]: Without dead ends: 53 [2020-11-22 12:51:57,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-22 12:51:57,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-22 12:51:57,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34. [2020-11-22 12:51:57,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-11-22 12:51:57,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-11-22 12:51:57,489 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 7 [2020-11-22 12:51:57,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:51:57,489 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-11-22 12:51:57,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-22 12:51:57,490 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-11-22 12:51:57,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-22 12:51:57,490 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:51:57,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:51:57,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:51:57,717 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:51:57,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:51:57,718 INFO L82 PathProgramCache]: Analyzing trace with hash -985752812, now seen corresponding path program 1 times [2020-11-22 12:51:57,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:51:57,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552019813] [2020-11-22 12:51:57,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:51:57,724 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:51:57,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1350793136] [2020-11-22 12:51:57,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:51:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:51:57,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 12:51:57,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:51:57,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:51:57,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:51:57,898 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:51:57,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:51:57,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552019813] [2020-11-22 12:51:57,947 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:51:57,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350793136] [2020-11-22 12:51:57,947 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:51:57,947 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-22 12:51:57,948 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707095025] [2020-11-22 12:51:57,948 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-22 12:51:57,948 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:51:57,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-22 12:51:57,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-22 12:51:57,950 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 6 states. [2020-11-22 12:52:02,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:52:02,410 INFO L93 Difference]: Finished difference Result 106 states and 119 transitions. [2020-11-22 12:52:02,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-22 12:52:02,411 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 8 [2020-11-22 12:52:02,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:52:02,414 INFO L225 Difference]: With dead ends: 106 [2020-11-22 12:52:02,415 INFO L226 Difference]: Without dead ends: 104 [2020-11-22 12:52:02,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2020-11-22 12:52:02,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-11-22 12:52:02,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 47. [2020-11-22 12:52:02,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-22 12:52:02,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 56 transitions. [2020-11-22 12:52:02,435 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 56 transitions. Word has length 8 [2020-11-22 12:52:02,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:52:02,435 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 56 transitions. [2020-11-22 12:52:02,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-22 12:52:02,435 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 56 transitions. [2020-11-22 12:52:02,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-22 12:52:02,436 INFO L414 BasicCegarLoop]: Found error trace [2020-11-22 12:52:02,436 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-22 12:52:02,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:52:02,638 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-22 12:52:02,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-22 12:52:02,639 INFO L82 PathProgramCache]: Analyzing trace with hash 1879507767, now seen corresponding path program 1 times [2020-11-22 12:52:02,639 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-22 12:52:02,639 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144533357] [2020-11-22 12:52:02,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-22 12:52:02,646 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-22 12:52:02,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [255747079] [2020-11-22 12:52:02,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:52:02,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-22 12:52:02,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-22 12:52:02,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-22 12:52:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:02,761 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-22 12:52:02,790 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-22 12:52:02,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-22 12:52:02,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144533357] [2020-11-22 12:52:02,794 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-22 12:52:02,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [255747079] [2020-11-22 12:52:02,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-22 12:52:02,795 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 2] imperfect sequences [] total 3 [2020-11-22 12:52:02,795 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576747570] [2020-11-22 12:52:02,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-22 12:52:02,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-22 12:52:02,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-22 12:52:02,797 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:52:02,797 INFO L87 Difference]: Start difference. First operand 47 states and 56 transitions. Second operand 4 states. [2020-11-22 12:52:02,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-22 12:52:02,799 INFO L93 Difference]: Finished difference Result 47 states and 56 transitions. [2020-11-22 12:52:02,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-22 12:52:02,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-22 12:52:02,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-22 12:52:02,800 INFO L225 Difference]: With dead ends: 47 [2020-11-22 12:52:02,800 INFO L226 Difference]: Without dead ends: 0 [2020-11-22 12:52:02,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-22 12:52:02,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-22 12:52:02,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-22 12:52:02,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-22 12:52:02,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-22 12:52:02,801 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-11-22 12:52:02,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-22 12:52:02,802 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-22 12:52:02,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-22 12:52:02,802 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-22 12:52:02,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-22 12:52:03,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-22 12:52:03,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-22 12:52:03,064 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:52:03,064 INFO L274 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:52:03,064 INFO L270 CegarLoopResult]: At program point L11-1(lines 10 16) the Hoare annotation is: false [2020-11-22 12:52:03,064 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:52:03,064 INFO L270 CegarLoopResult]: At program point L11-3(lines 10 16) the Hoare annotation is: false [2020-11-22 12:52:03,064 INFO L274 CegarLoopResult]: For program point L11-4(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:52:03,065 INFO L270 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2020-11-22 12:52:03,065 INFO L274 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:52:03,065 INFO L270 CegarLoopResult]: At program point L11-7(lines 51 52) the Hoare annotation is: false [2020-11-22 12:52:03,065 INFO L274 CegarLoopResult]: For program point L11-8(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:52:03,065 INFO L270 CegarLoopResult]: At program point L11-9(lines 10 16) the Hoare annotation is: false [2020-11-22 12:52:03,065 INFO L274 CegarLoopResult]: For program point L11-10(lines 11 14) no Hoare annotation was computed. [2020-11-22 12:52:03,065 INFO L277 CegarLoopResult]: At program point L11-11(lines 10 16) the Hoare annotation is: true [2020-11-22 12:52:03,065 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:52:03,065 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-22 12:52:03,065 INFO L274 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:52:03,066 INFO L274 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:52:03,066 INFO L274 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:52:03,066 INFO L274 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:52:03,066 INFO L274 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:52:03,066 INFO L274 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-11-22 12:52:03,066 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:52:03,066 INFO L274 CegarLoopResult]: For program point L46-1(lines 46 55) no Hoare annotation was computed. [2020-11-22 12:52:03,066 INFO L270 CegarLoopResult]: At program point L46-3(lines 46 55) the Hoare annotation is: false [2020-11-22 12:52:03,066 INFO L274 CegarLoopResult]: For program point L46-4(lines 46 55) no Hoare annotation was computed. [2020-11-22 12:52:03,067 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:52:03,067 INFO L274 CegarLoopResult]: For program point L40(lines 40 67) no Hoare annotation was computed. [2020-11-22 12:52:03,067 INFO L270 CegarLoopResult]: At program point L40-2(lines 7 67) the Hoare annotation is: false [2020-11-22 12:52:03,067 INFO L274 CegarLoopResult]: For program point L40-3(lines 40 67) no Hoare annotation was computed. [2020-11-22 12:52:03,067 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:52:03,067 INFO L274 CegarLoopResult]: For program point L41(lines 41 42) no Hoare annotation was computed. [2020-11-22 12:52:03,067 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-22 12:52:03,067 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-11-22 12:52:03,077 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 12:52:03 BoogieIcfgContainer [2020-11-22 12:52:03,078 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-22 12:52:03,078 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-22 12:52:03,079 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-22 12:52:03,079 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-22 12:52:03,079 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 12:51:56" (3/4) ... [2020-11-22 12:52:03,083 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-22 12:52:03,100 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-11-22 12:52:03,101 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-11-22 12:52:03,101 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-22 12:52:03,101 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-22 12:52:03,181 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_b0affd76-6e53-4942-8c0b-4c3762e943f6/bin/utaipan/witness.graphml [2020-11-22 12:52:03,181 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-22 12:52:03,183 INFO L168 Benchmark]: Toolchain (without parser) took 8541.91 ms. Allocated memory was 98.6 MB in the beginning and 142.6 MB in the end (delta: 44.0 MB). Free memory was 63.3 MB in the beginning and 67.7 MB in the end (delta: -4.3 MB). Peak memory consumption was 40.7 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:03,184 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 98.6 MB. Free memory was 79.8 MB in the beginning and 79.6 MB in the end (delta: 129.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-22 12:52:03,185 INFO L168 Benchmark]: CACSL2BoogieTranslator took 381.97 ms. Allocated memory is still 98.6 MB. Free memory was 63.1 MB in the beginning and 74.7 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:03,185 INFO L168 Benchmark]: Boogie Procedure Inliner took 66.10 ms. Allocated memory is still 98.6 MB. Free memory was 74.7 MB in the beginning and 73.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:03,186 INFO L168 Benchmark]: Boogie Preprocessor took 57.33 ms. Allocated memory is still 98.6 MB. Free memory was 73.0 MB in the beginning and 71.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:03,186 INFO L168 Benchmark]: RCFGBuilder took 962.50 ms. Allocated memory is still 98.6 MB. Free memory was 71.7 MB in the beginning and 42.8 MB in the end (delta: 28.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:03,187 INFO L168 Benchmark]: TraceAbstraction took 6962.31 ms. Allocated memory was 98.6 MB in the beginning and 142.6 MB in the end (delta: 44.0 MB). Free memory was 42.4 MB in the beginning and 71.9 MB in the end (delta: -29.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:03,187 INFO L168 Benchmark]: Witness Printer took 103.16 ms. Allocated memory is still 142.6 MB. Free memory was 71.9 MB in the beginning and 67.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-22 12:52:03,190 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 98.6 MB. Free memory was 79.8 MB in the beginning and 79.6 MB in the end (delta: 129.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 381.97 ms. Allocated memory is still 98.6 MB. Free memory was 63.1 MB in the beginning and 74.7 MB in the end (delta: -11.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 66.10 ms. Allocated memory is still 98.6 MB. Free memory was 74.7 MB in the beginning and 73.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.33 ms. Allocated memory is still 98.6 MB. Free memory was 73.0 MB in the beginning and 71.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 962.50 ms. Allocated memory is still 98.6 MB. Free memory was 71.7 MB in the beginning and 42.8 MB in the end (delta: 28.9 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6962.31 ms. Allocated memory was 98.6 MB in the beginning and 142.6 MB in the end (delta: 44.0 MB). Free memory was 42.4 MB in the beginning and 71.9 MB in the end (delta: -29.5 MB). Peak memory consumption was 16.0 MB. Max. memory is 16.1 GB. * Witness Printer took 103.16 ms. Allocated memory is still 142.6 MB. Free memory was 71.9 MB in the beginning and 67.7 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: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: 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: 51]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.8s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 4.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 121 SDtfs, 130 SDslu, 179 SDs, 0 SdLazy, 93 SolverSat, 10 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 67 GetRequests, 48 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=47occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 86 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 62 ConstructedInterpolants, 0 QuantifiedInterpolants, 1409 SizeOfPredicates, 18 NumberOfNonLiveVariables, 408 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 10 InterpolantComputations, 10 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...