./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound100.c -s /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/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 20cb52285d677c71a290583fd56e67c135d9ae79 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 18:35:37,071 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 18:35:37,095 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 18:35:37,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 18:35:37,119 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 18:35:37,120 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 18:35:37,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 18:35:37,134 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 18:35:37,136 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 18:35:37,137 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 18:35:37,138 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 18:35:37,139 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 18:35:37,139 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 18:35:37,140 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 18:35:37,141 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 18:35:37,142 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 18:35:37,143 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 18:35:37,144 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 18:35:37,145 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 18:35:37,147 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 18:35:37,149 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 18:35:37,150 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 18:35:37,163 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 18:35:37,164 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 18:35:37,166 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 18:35:37,167 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 18:35:37,167 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 18:35:37,168 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 18:35:37,168 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 18:35:37,169 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 18:35:37,169 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 18:35:37,170 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 18:35:37,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 18:35:37,171 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 18:35:37,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 18:35:37,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 18:35:37,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 18:35:37,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 18:35:37,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 18:35:37,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 18:35:37,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 18:35:37,175 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 18:35:37,192 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 18:35:37,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 18:35:37,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 18:35:37,193 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 18:35:37,194 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 18:35:37,194 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 18:35:37,194 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 18:35:37,194 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 18:35:37,194 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 18:35:37,194 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 18:35:37,194 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 18:35:37,194 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 18:35:37,194 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 18:35:37,195 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 18:35:37,195 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 18:35:37,195 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 18:35:37,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 18:35:37,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 18:35:37,196 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 18:35:37,196 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 18:35:37,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 18:35:37,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 18:35:37,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 18:35:37,196 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 18:35:37,196 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 18:35:37,196 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 18:35:37,196 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 18:35:37,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 18:35:37,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 18:35:37,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 18:35:37,197 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 18:35:37,197 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 18:35:37,197 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 18:35:37,197 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 18:35:37,197 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 18:35:37,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 18:35:37,198 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 18:35:37,198 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 18:35:37,198 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 18:35:37,198 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_d23e7554-f8f2-4d2b-98f7-98621dbae41f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 20cb52285d677c71a290583fd56e67c135d9ae79 [2020-12-09 18:35:37,363 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 18:35:37,380 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 18:35:37,381 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 18:35:37,382 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 18:35:37,383 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 18:35:37,383 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound100.c [2020-12-09 18:35:37,423 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/bin/utaipan/data/62f733f0e/a8e099584c2647b79b19b708c25e3c9f/FLAG8d2ade96d [2020-12-09 18:35:37,785 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 18:35:37,786 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound100.c [2020-12-09 18:35:37,792 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/bin/utaipan/data/62f733f0e/a8e099584c2647b79b19b708c25e3c9f/FLAG8d2ade96d [2020-12-09 18:35:37,803 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/bin/utaipan/data/62f733f0e/a8e099584c2647b79b19b708c25e3c9f [2020-12-09 18:35:37,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 18:35:37,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 18:35:37,808 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 18:35:37,808 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 18:35:37,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 18:35:37,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:35:37" (1/1) ... [2020-12-09 18:35:37,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1342b9bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:37, skipping insertion in model container [2020-12-09 18:35:37,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 06:35:37" (1/1) ... [2020-12-09 18:35:37,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 18:35:37,830 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 18:35:37,923 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound100.c[546,559] [2020-12-09 18:35:37,934 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:35:37,943 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 18:35:37,956 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/sv-benchmarks/c/nla-digbench-scaling/geo1-ll_unwindbound100.c[546,559] [2020-12-09 18:35:37,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 18:35:37,975 INFO L208 MainTranslator]: Completed translation [2020-12-09 18:35:37,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:37 WrapperNode [2020-12-09 18:35:37,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 18:35:37,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 18:35:37,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 18:35:37,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 18:35:37,984 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:37" (1/1) ... [2020-12-09 18:35:37,989 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:37" (1/1) ... [2020-12-09 18:35:38,002 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 18:35:38,003 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 18:35:38,003 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 18:35:38,003 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 18:35:38,009 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:37" (1/1) ... [2020-12-09 18:35:38,009 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:37" (1/1) ... [2020-12-09 18:35:38,010 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:37" (1/1) ... [2020-12-09 18:35:38,010 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:37" (1/1) ... [2020-12-09 18:35:38,013 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:37" (1/1) ... [2020-12-09 18:35:38,016 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:37" (1/1) ... [2020-12-09 18:35:38,017 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:37" (1/1) ... [2020-12-09 18:35:38,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 18:35:38,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 18:35:38,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 18:35:38,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 18:35:38,019 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/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 [2020-12-09 18:35:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 18:35:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 18:35:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 18:35:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 18:35:38,288 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 18:35:38,288 INFO L299 CfgBuilder]: Removed 13 assume(true) statements. [2020-12-09 18:35:38,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:35:38 BoogieIcfgContainer [2020-12-09 18:35:38,290 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 18:35:38,292 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 18:35:38,292 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 18:35:38,296 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 18:35:38,296 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 06:35:37" (1/3) ... [2020-12-09 18:35:38,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fca1b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:35:38, skipping insertion in model container [2020-12-09 18:35:38,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 06:35:37" (2/3) ... [2020-12-09 18:35:38,297 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1fca1b70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 06:35:38, skipping insertion in model container [2020-12-09 18:35:38,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:35:38" (3/3) ... [2020-12-09 18:35:38,299 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-ll_unwindbound100.c [2020-12-09 18:35:38,312 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 18:35:38,315 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-12-09 18:35:38,326 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-12-09 18:35:38,349 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 18:35:38,349 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 18:35:38,350 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 18:35:38,350 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 18:35:38,350 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 18:35:38,350 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 18:35:38,350 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 18:35:38,350 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 18:35:38,364 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states. [2020-12-09 18:35:38,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 18:35:38,368 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:35:38,369 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 18:35:38,369 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:35:38,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:35:38,375 INFO L82 PathProgramCache]: Analyzing trace with hash 92080106, now seen corresponding path program 1 times [2020-12-09 18:35:38,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:35:38,385 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768315227] [2020-12-09 18:35:38,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:35:38,469 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 18:35:38,470 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [841636956] [2020-12-09 18:35:38,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/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 [2020-12-09 18:35:38,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:38,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 15 conjunts are in the unsatisfiable core [2020-12-09 18:35:38,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:35:38,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:35:38,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:35:38,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:35:38,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768315227] [2020-12-09 18:35:38,611 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 18:35:38,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841636956] [2020-12-09 18:35:38,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 18:35:38,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 18:35:38,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889754721] [2020-12-09 18:35:38,615 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 18:35:38,615 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:35:38,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 18:35:38,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 18:35:38,627 INFO L87 Difference]: Start difference. First operand 13 states. Second operand 6 states. [2020-12-09 18:35:40,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:35:40,707 INFO L93 Difference]: Finished difference Result 42 states and 60 transitions. [2020-12-09 18:35:40,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 18:35:40,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 5 [2020-12-09 18:35:40,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:35:40,715 INFO L225 Difference]: With dead ends: 42 [2020-12-09 18:35:40,715 INFO L226 Difference]: Without dead ends: 22 [2020-12-09 18:35:40,717 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 18:35:40,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-12-09 18:35:40,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 19. [2020-12-09 18:35:40,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-12-09 18:35:40,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2020-12-09 18:35:40,740 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 5 [2020-12-09 18:35:40,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:35:40,740 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2020-12-09 18:35:40,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 18:35:40,740 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2020-12-09 18:35:40,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 18:35:40,740 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:35:40,741 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1] [2020-12-09 18:35:40,942 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 18:35:40,943 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:35:40,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:35:40,945 INFO L82 PathProgramCache]: Analyzing trace with hash 1331312194, now seen corresponding path program 1 times [2020-12-09 18:35:40,946 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:35:40,947 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1856982186] [2020-12-09 18:35:40,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:35:40,987 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 18:35:40,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1591440928] [2020-12-09 18:35:40,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/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 [2020-12-09 18:35:41,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:35:41,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 29 conjunts are in the unsatisfiable core [2020-12-09 18:35:41,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:35:43,149 WARN L197 SmtUtils]: Spent 2.05 s on a formula simplification that was a NOOP. DAG size: 24 [2020-12-09 18:35:43,252 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 18:35:43,264 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:35:43,272 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 18:35:45,293 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-12-09 18:35:45,297 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-12-09 18:35:49,394 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:35:49,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:36:03,792 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-12-09 18:36:03,792 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 18:36:05,808 WARN L860 $PredicateComparison]: unable to prove that (or (forall ((ULTIMATE.start_main_~x~0 Int)) (let ((.cse0 (* c_ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0))) (or (not (= (+ .cse0 1) (+ c_ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~x~0))) (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) c_ULTIMATE.start_main_~z~0) (+ .cse0 (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~y~0)))))) (<= c_ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~c~0)) is different from true [2020-12-09 18:36:05,822 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 2 not checked. [2020-12-09 18:36:05,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1856982186] [2020-12-09 18:36:05,823 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 18:36:05,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1591440928] [2020-12-09 18:36:05,823 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2032596336] [2020-12-09 18:36:05,837 INFO L159 IcfgInterpreter]: Started Sifa with 7 locations of interest [2020-12-09 18:36:05,837 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 18:36:05,840 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 18:36:05,844 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 18:36:05,844 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 18:36:05,923 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 18:36:06,501 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 18:36:08,676 WARN L197 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 46 [2020-12-09 18:36:09,063 WARN L197 SmtUtils]: Spent 340.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 64 [2020-12-09 18:36:12,578 WARN L197 SmtUtils]: Spent 769.00 ms on a formula simplification. DAG size of input: 135 DAG size of output: 100 [2020-12-09 18:36:26,623 WARN L197 SmtUtils]: Spent 6.86 s on a formula simplification. DAG size of input: 138 DAG size of output: 111 [2020-12-09 18:36:28,837 WARN L197 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 47 [2020-12-09 18:36:28,839 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 18:36:28,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 18:36:28,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 13 [2020-12-09 18:36:28,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204983639] [2020-12-09 18:36:28,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-12-09 18:36:28,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:36:28,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-12-09 18:36:28,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=219, Unknown=14, NotChecked=30, Total=306 [2020-12-09 18:36:28,841 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 13 states. [2020-12-09 18:36:31,316 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0))) (and (not .cse0) (<= 1 c_ULTIMATE.start_main_~k~0) (or .cse0 (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond)) (= c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~y~0) (= (+ .cse1 1) (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0)) (<= 1 c_ULTIMATE.start_main_~c~0) (or (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) c_ULTIMATE.start_main_~z~0) (+ .cse1 (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~y~0))) (<= c_ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~c~0)))) is different from true [2020-12-09 18:36:35,398 WARN L197 SmtUtils]: Spent 4.06 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-09 18:37:15,257 WARN L197 SmtUtils]: Spent 8.09 s on a formula simplification that was a NOOP. DAG size: 26 [2020-12-09 18:37:50,272 WARN L197 SmtUtils]: Spent 18.35 s on a formula simplification. DAG size of input: 32 DAG size of output: 25 [2020-12-09 18:39:25,709 WARN L197 SmtUtils]: Spent 1.54 m on a formula simplification. DAG size of input: 45 DAG size of output: 41 [2020-12-09 18:39:30,846 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse3 (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0))) (and (let ((.cse1 (= c_ULTIMATE.start_main_~z~0 0))) (or (let ((.cse0 (+ c_ULTIMATE.start_main_~x~0 (- 1)))) (and (= (mod .cse0 c_ULTIMATE.start_main_~z~0) 0) (not .cse1) (= c_ULTIMATE.start_main_~y~0 (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0)) (let ((.cse2 (div .cse0 c_ULTIMATE.start_main_~z~0))) (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0) .cse2) (+ (* .cse2 c_ULTIMATE.start_main_~z~0) 1))))) (and (= c_ULTIMATE.start_main_~x~0 1) .cse1))) (not .cse3) (or .cse3 (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond)) (= (+ .cse4 1) (+ c_ULTIMATE.start_main_~y~0 c_ULTIMATE.start_main_~x~0)) (or (= (+ (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~x~0) c_ULTIMATE.start_main_~z~0) (+ .cse4 (* c_ULTIMATE.start_main_~z~0 c_ULTIMATE.start_main_~y~0))) (<= c_ULTIMATE.start_main_~k~0 c_ULTIMATE.start_main_~c~0)))) is different from true [2020-12-09 18:39:47,623 WARN L197 SmtUtils]: Spent 8.08 s on a formula simplification that was a NOOP. DAG size: 21 [2020-12-09 18:40:02,009 WARN L197 SmtUtils]: Spent 8.07 s on a formula simplification that was a NOOP. DAG size: 18 [2020-12-09 18:40:32,068 WARN L197 SmtUtils]: Spent 27.97 s on a formula simplification. DAG size of input: 24 DAG size of output: 20 [2020-12-09 18:41:04,991 WARN L197 SmtUtils]: Spent 24.27 s on a formula simplification. DAG size of input: 27 DAG size of output: 23 [2020-12-09 18:41:09,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:41:09,381 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2020-12-09 18:41:09,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-12-09 18:41:09,384 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 13 [2020-12-09 18:41:09,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:41:09,384 INFO L225 Difference]: With dead ends: 32 [2020-12-09 18:41:09,384 INFO L226 Difference]: Without dead ends: 19 [2020-12-09 18:41:09,385 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 29 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 281.3s TimeCoverageRelationStatistics Valid=141, Invalid=596, Unknown=31, NotChecked=162, Total=930 [2020-12-09 18:41:09,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-12-09 18:41:09,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-12-09 18:41:09,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 18:41:09,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-12-09 18:41:09,388 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2020-12-09 18:41:09,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:41:09,389 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-12-09 18:41:09,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-12-09 18:41:09,389 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-12-09 18:41:09,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 18:41:09,389 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:41:09,389 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1] [2020-12-09 18:41:09,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:41:09,591 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:41:09,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:41:09,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1679038575, now seen corresponding path program 1 times [2020-12-09 18:41:09,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:41:09,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157297997] [2020-12-09 18:41:09,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:41:09,606 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 18:41:09,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1094892178] [2020-12-09 18:41:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/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 [2020-12-09 18:41:09,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:41:09,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 18:41:09,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:41:09,690 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:41:09,690 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:41:09,755 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:41:09,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157297997] [2020-12-09 18:41:09,755 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 18:41:09,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1094892178] [2020-12-09 18:41:09,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1778660183] [2020-12-09 18:41:09,757 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-12-09 18:41:09,757 INFO L166 IcfgInterpreter]: Building call graph [2020-12-09 18:41:09,758 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-12-09 18:41:09,758 INFO L176 IcfgInterpreter]: Starting interpretation [2020-12-09 18:41:09,758 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-12-09 18:41:09,818 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-12-09 18:41:10,142 INFO L180 IcfgInterpreter]: Interpretation finished [2020-12-09 18:41:10,745 WARN L197 SmtUtils]: Spent 480.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 62 [2020-12-09 18:41:12,125 WARN L197 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 136 DAG size of output: 99 [2020-12-09 18:41:15,935 WARN L197 SmtUtils]: Spent 3.66 s on a formula simplification. DAG size of input: 138 DAG size of output: 111 [2020-12-09 18:41:16,246 WARN L197 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 49 [2020-12-09 18:41:16,629 WARN L197 SmtUtils]: Spent 295.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 57 [2020-12-09 18:41:16,789 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 18:41:16,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-12-09 18:41:16,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 9 [2020-12-09 18:41:16,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490579137] [2020-12-09 18:41:16,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 18:41:16,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:41:16,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 18:41:16,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2020-12-09 18:41:16,791 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 10 states. [2020-12-09 18:41:16,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:41:16,915 INFO L93 Difference]: Finished difference Result 21 states and 20 transitions. [2020-12-09 18:41:16,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 18:41:16,916 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 14 [2020-12-09 18:41:16,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:41:16,917 INFO L225 Difference]: With dead ends: 21 [2020-12-09 18:41:16,917 INFO L226 Difference]: Without dead ends: 17 [2020-12-09 18:41:16,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=77, Invalid=303, Unknown=0, NotChecked=0, Total=380 [2020-12-09 18:41:16,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-12-09 18:41:16,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-12-09 18:41:16,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-12-09 18:41:16,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2020-12-09 18:41:16,921 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 14 [2020-12-09 18:41:16,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:41:16,921 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2020-12-09 18:41:16,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 18:41:16,921 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2020-12-09 18:41:16,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-12-09 18:41:16,922 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 18:41:16,922 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1] [2020-12-09 18:41:17,123 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-12-09 18:41:17,124 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 18:41:17,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 18:41:17,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1398460906, now seen corresponding path program 1 times [2020-12-09 18:41:17,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 18:41:17,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431167895] [2020-12-09 18:41:17,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 18:41:17,138 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 18:41:17,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2057294045] [2020-12-09 18:41:17,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/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 [2020-12-09 18:41:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 18:41:17,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 21 conjunts are in the unsatisfiable core [2020-12-09 18:41:17,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 18:41:17,283 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 18:41:17,283 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 18:41:17,354 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-12-09 18:41:17,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431167895] [2020-12-09 18:41:17,354 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 18:41:17,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057294045] [2020-12-09 18:41:17,354 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-09 18:41:17,354 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 9 [2020-12-09 18:41:17,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424084603] [2020-12-09 18:41:17,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 18:41:17,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 18:41:17,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 18:41:17,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-12-09 18:41:17,355 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand 5 states. [2020-12-09 18:41:19,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 18:41:19,408 INFO L93 Difference]: Finished difference Result 17 states and 16 transitions. [2020-12-09 18:41:19,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 18:41:19,411 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-12-09 18:41:19,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 18:41:19,411 INFO L225 Difference]: With dead ends: 17 [2020-12-09 18:41:19,411 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 18:41:19,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-12-09 18:41:19,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 18:41:19,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 18:41:19,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 18:41:19,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 18:41:19,412 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-12-09 18:41:19,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 18:41:19,412 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 18:41:19,412 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 18:41:19,412 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 18:41:19,412 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 18:41:19,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 18:41:19,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 18:41:36,344 WARN L197 SmtUtils]: Spent 16.71 s on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-12-09 18:41:44,846 WARN L197 SmtUtils]: Spent 8.49 s on a formula simplification. DAG size of input: 28 DAG size of output: 28 [2020-12-09 18:41:44,848 INFO L258 CegarLoopResult]: At program point L35-3(lines 35 45) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~x~0 1) (<= ~counter~0 0) (<= 1 ULTIMATE.start_main_~k~0) (= ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) (<= 1 ULTIMATE.start_main_~c~0)) (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0)) (or (forall ((ULTIMATE.start_main_~x~0 Int)) (let ((.cse0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0))) (or (not (= (+ .cse0 1) (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~z~0) (+ .cse0 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0)))))) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~c~0)))) [2020-12-09 18:41:44,848 INFO L262 CegarLoopResult]: For program point L35-4(lines 35 45) no Hoare annotation was computed. [2020-12-09 18:41:44,848 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2020-12-09 18:41:44,848 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 18:41:44,848 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) no Hoare annotation was computed. [2020-12-09 18:41:44,848 INFO L262 CegarLoopResult]: For program point L16(lines 16 19) no Hoare annotation was computed. [2020-12-09 18:41:44,848 INFO L258 CegarLoopResult]: At program point L16-2(lines 38 39) the Hoare annotation is: (let ((.cse2 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0))) (let ((.cse0 (= (+ .cse2 1) (+ ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~y~0))) (.cse1 (or (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) ULTIMATE.start_main_~z~0) (+ .cse2 (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0))) (<= ULTIMATE.start_main_~k~0 ULTIMATE.start_main_~c~0)))) (or (and (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) .cse0 (< ~counter~0 98) .cse1) (and .cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse1)))) [2020-12-09 18:41:44,848 INFO L262 CegarLoopResult]: For program point L16-3(lines 16 19) no Hoare annotation was computed. [2020-12-09 18:41:44,849 INFO L258 CegarLoopResult]: At program point L16-5(lines 15 21) the Hoare annotation is: (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond)) [2020-12-09 18:41:44,849 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 18:41:44,849 INFO L262 CegarLoopResult]: For program point L17(lines 17 18) no Hoare annotation was computed. [2020-12-09 18:41:44,849 INFO L262 CegarLoopResult]: For program point L17-1(lines 17 18) no Hoare annotation was computed. [2020-12-09 18:41:44,849 INFO L262 CegarLoopResult]: For program point L35-1(lines 35 45) no Hoare annotation was computed. [2020-12-09 18:41:44,853 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-12-09 18:41:44,854 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-12-09 18:41:44,854 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-12-09 18:41:44,854 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-12-09 18:41:44,859 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-12-09 18:41:44,859 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-12-09 18:41:44,859 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-12-09 18:41:44,859 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-12-09 18:41:44,862 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 06:41:44 BoogieIcfgContainer [2020-12-09 18:41:44,862 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 18:41:44,862 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 18:41:44,862 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 18:41:44,862 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 18:41:44,863 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 06:35:38" (3/4) ... [2020-12-09 18:41:44,865 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 18:41:44,871 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 14 nodes and edges [2020-12-09 18:41:44,871 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2020-12-09 18:41:44,871 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 18:41:44,871 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 18:41:44,897 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_d23e7554-f8f2-4d2b-98f7-98621dbae41f/bin/utaipan/witness.graphml [2020-12-09 18:41:44,897 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 18:41:44,898 INFO L168 Benchmark]: Toolchain (without parser) took 367091.54 ms. Allocated memory is still 163.6 MB. Free memory was 133.2 MB in the beginning and 55.1 MB in the end (delta: 78.0 MB). Peak memory consumption was 80.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:41:44,898 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 81.8 MB. Free memory was 50.8 MB in the beginning and 50.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:41:44,898 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.50 ms. Allocated memory is still 163.6 MB. Free memory was 132.8 MB in the beginning and 123.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-09 18:41:44,899 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.41 ms. Allocated memory is still 163.6 MB. Free memory was 123.2 MB in the beginning and 121.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 18:41:44,899 INFO L168 Benchmark]: Boogie Preprocessor took 15.23 ms. Allocated memory is still 163.6 MB. Free memory was 121.6 MB in the beginning and 120.7 MB in the end (delta: 849.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 18:41:44,899 INFO L168 Benchmark]: RCFGBuilder took 271.98 ms. Allocated memory is still 163.6 MB. Free memory was 120.7 MB in the beginning and 101.0 MB in the end (delta: 19.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-09 18:41:44,900 INFO L168 Benchmark]: TraceAbstraction took 366569.77 ms. Allocated memory is still 163.6 MB. Free memory was 100.6 MB in the beginning and 58.3 MB in the end (delta: 42.3 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. [2020-12-09 18:41:44,900 INFO L168 Benchmark]: Witness Printer took 34.96 ms. Allocated memory is still 163.6 MB. Free memory was 58.3 MB in the beginning and 55.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 18:41:44,902 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 81.8 MB. Free memory was 50.8 MB in the beginning and 50.8 MB in the end (delta: 70.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 168.50 ms. Allocated memory is still 163.6 MB. Free memory was 132.8 MB in the beginning and 123.2 MB in the end (delta: 9.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.41 ms. Allocated memory is still 163.6 MB. Free memory was 123.2 MB in the beginning and 121.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 15.23 ms. Allocated memory is still 163.6 MB. Free memory was 121.6 MB in the beginning and 120.7 MB in the end (delta: 849.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 271.98 ms. Allocated memory is still 163.6 MB. Free memory was 120.7 MB in the beginning and 101.0 MB in the end (delta: 19.7 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 366569.77 ms. Allocated memory is still 163.6 MB. Free memory was 100.6 MB in the beginning and 58.3 MB in the end (delta: 42.3 MB). Peak memory consumption was 42.7 MB. Max. memory is 16.1 GB. * Witness Printer took 34.96 ms. Allocated memory is still 163.6 MB. Free memory was 58.3 MB in the beginning and 55.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant [2020-12-09 18:41:44,906 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-12-09 18:41:44,906 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-12-09 18:41:44,906 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-12-09 18:41:44,906 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-12-09 18:41:44,907 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-12-09 18:41:44,907 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-12-09 18:41:44,907 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] [2020-12-09 18:41:44,907 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[ULTIMATE.start_main_~x~0,QUANTIFIED] Derived loop invariant: ((((x == 1 && counter <= 0) && 1 <= k) && z == y) && 1 <= c) || ((!(0 == cond) && z * x + 1 == x + y) && ((forall ULTIMATE.start_main_~x~0 : int :: !(z * ULTIMATE.start_main_~x~0 + 1 == ULTIMATE.start_main_~x~0 + y) || z * z * ULTIMATE.start_main_~x~0 + z == z * ULTIMATE.start_main_~x~0 + z * y) || k <= c)) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: !(0 == cond) - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((!(0 == cond) && z * x + 1 == x + y) && counter < 98) && (z * z * x + z == z * x + z * y || k <= c)) || ((z * x + 1 == x + y && 1 == cond) && (z * z * x + z == z * x + z * y || k <= c)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 341.2s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 284.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 25.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 30 SDtfs, 100 SDslu, 78 SDs, 0 SdLazy, 100 SolverSat, 45 SolverUnsat, 13 SolverUnknown, 0 SolverNotchecked, 43.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 141 GetRequests, 75 SyntacticMatches, 5 SemanticMatches, 61 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 288.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=1, 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 14 NumberOfFragments, 132 HoareAnnotationTreeSize, 3 FomulaSimplifications, 310 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 25.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 25.1s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 88 ConstructedInterpolants, 2 QuantifiedInterpolants, 7520 SizeOfPredicates, 33 NumberOfNonLiveVariables, 356 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 23/60 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! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...