./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound5.i --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_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound5.i -s /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/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 0e283d38072468e4209531e67c50246e3b5ee7de ........................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound5.i -s /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/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 0e283d38072468e4209531e67c50246e3b5ee7de ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: ERROR: ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:09:37,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:09:37,133 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:09:37,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:09:37,179 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:09:37,180 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:09:37,184 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:09:37,189 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:09:37,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:09:37,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:09:37,195 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:09:37,196 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:09:37,197 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:09:37,199 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:09:37,201 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:09:37,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:09:37,204 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:09:37,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:09:37,208 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:09:37,211 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:09:37,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:09:37,217 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:09:37,219 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:09:37,225 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:09:37,229 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:09:37,230 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:09:37,235 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:09:37,236 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:09:37,237 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:09:37,238 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:09:37,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:09:37,240 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:09:37,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:09:37,242 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:09:37,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:09:37,243 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:09:37,245 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:09:37,245 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:09:37,246 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:09:37,247 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:09:37,248 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:09:37,249 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-11-30 02:09:37,283 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:09:37,285 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:09:37,287 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:09:37,288 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:09:37,288 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:09:37,289 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:09:37,289 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-11-30 02:09:37,289 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:09:37,289 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:09:37,289 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-11-30 02:09:37,291 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-11-30 02:09:37,291 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:09:37,291 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-11-30 02:09:37,292 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-11-30 02:09:37,292 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-11-30 02:09:37,293 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:09:37,293 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:09:37,293 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 02:09:37,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:09:37,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:09:37,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:09:37,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:09:37,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:09:37,295 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:09:37,295 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:09:37,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:09:37,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:09:37,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:09:37,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:09:37,298 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:09:37,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:09:37,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:09:37,299 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:09:37,299 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:09:37,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:09:37,299 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-11-30 02:09:37,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 02:09:37,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:09:37,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:09:37,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:09:37,301 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_00352c71-ca45-4e02-8d83-b482d0a1f599/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e283d38072468e4209531e67c50246e3b5ee7de [2020-11-30 02:09:37,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:09:37,613 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:09:37,616 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:09:37,617 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:09:37,618 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:09:37,620 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound5.i [2020-11-30 02:09:37,708 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/data/9f2e5e923/b365d4283115492199e14e4ddfe3c362/FLAGfb11f43e1 [2020-11-30 02:09:38,226 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:09:38,229 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound5.i [2020-11-30 02:09:38,239 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/data/9f2e5e923/b365d4283115492199e14e4ddfe3c362/FLAGfb11f43e1 [2020-11-30 02:09:38,583 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/data/9f2e5e923/b365d4283115492199e14e4ddfe3c362 [2020-11-30 02:09:38,586 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:09:38,589 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:09:38,595 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:09:38,596 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:09:38,599 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:09:38,601 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:09:38" (1/1) ... [2020-11-30 02:09:38,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4337059f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:38, skipping insertion in model container [2020-11-30 02:09:38,603 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:09:38" (1/1) ... [2020-11-30 02:09:38,613 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:09:38,647 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:09:38,839 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:09:38,849 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:09:38,868 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:09:38,882 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:09:38,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:38 WrapperNode [2020-11-30 02:09:38,883 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:09:38,885 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:09:38,885 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:09:38,885 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:09:38,893 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:38" (1/1) ... [2020-11-30 02:09:38,900 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:38" (1/1) ... [2020-11-30 02:09:38,928 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:09:38,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:09:38,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:09:38,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:09:38,938 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:38" (1/1) ... [2020-11-30 02:09:38,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:38" (1/1) ... [2020-11-30 02:09:38,954 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:38" (1/1) ... [2020-11-30 02:09:38,955 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:38" (1/1) ... [2020-11-30 02:09:38,958 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:38" (1/1) ... [2020-11-30 02:09:38,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:38" (1/1) ... [2020-11-30 02:09:38,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:38" (1/1) ... [2020-11-30 02:09:38,976 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:09:38,977 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:09:38,977 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:09:38,977 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:09:38,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/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 [2020-11-30 02:09:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 02:09:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:09:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:09:39,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:09:39,465 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:09:39,465 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 02:09:39,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:09:39 BoogieIcfgContainer [2020-11-30 02:09:39,468 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:09:39,469 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:09:39,470 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:09:39,474 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:09:39,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:09:38" (1/3) ... [2020-11-30 02:09:39,475 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff221f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:09:39, skipping insertion in model container [2020-11-30 02:09:39,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:09:38" (2/3) ... [2020-11-30 02:09:39,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ff221f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:09:39, skipping insertion in model container [2020-11-30 02:09:39,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:09:39" (3/3) ... [2020-11-30 02:09:39,477 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound5.i [2020-11-30 02:09:39,489 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:09:39,493 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 02:09:39,506 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 02:09:39,531 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:09:39,532 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:09:39,532 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:09:39,532 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:09:39,532 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:09:39,532 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:09:39,533 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:09:39,533 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:09:39,546 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-30 02:09:39,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 02:09:39,552 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:09:39,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 02:09:39,553 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:09:39,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:09:39,560 INFO L82 PathProgramCache]: Analyzing trace with hash -597933539, now seen corresponding path program 1 times [2020-11-30 02:09:39,571 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:09:39,572 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022969974] [2020-11-30 02:09:39,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:09:39,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:09:39,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:09:39,736 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022969974] [2020-11-30 02:09:39,737 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:09:39,737 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-30 02:09:39,738 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216119730] [2020-11-30 02:09:39,743 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:09:39,743 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:09:39,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:09:39,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:09:39,760 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 2 states. [2020-11-30 02:09:39,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:09:39,776 INFO L93 Difference]: Finished difference Result 29 states and 41 transitions. [2020-11-30 02:09:39,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:09:39,777 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 6 [2020-11-30 02:09:39,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:09:39,786 INFO L225 Difference]: With dead ends: 29 [2020-11-30 02:09:39,786 INFO L226 Difference]: Without dead ends: 14 [2020-11-30 02:09:39,789 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:09:39,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-30 02:09:39,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-30 02:09:39,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-30 02:09:39,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2020-11-30 02:09:39,823 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 6 [2020-11-30 02:09:39,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:09:39,823 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2020-11-30 02:09:39,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:09:39,824 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2020-11-30 02:09:39,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-11-30 02:09:39,824 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:09:39,825 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:09:39,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-30 02:09:39,825 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:09:39,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:09:39,826 INFO L82 PathProgramCache]: Analyzing trace with hash 692135484, now seen corresponding path program 1 times [2020-11-30 02:09:39,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:09:39,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316392194] [2020-11-30 02:09:39,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:09:39,845 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:09:39,846 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [469230228] [2020-11-30 02:09:39,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/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 [2020-11-30 02:09:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:09:39,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-30 02:09:39,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:09:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:09:40,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:09:40,138 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:09:50,960 WARN L193 SmtUtils]: Spent 6.27 s on a formula simplification that was a NOOP. DAG size: 14 [2020-11-30 02:09:50,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:09:50,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316392194] [2020-11-30 02:09:50,963 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:09:50,964 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469230228] [2020-11-30 02:09:50,964 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:09:50,964 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2020-11-30 02:09:50,964 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1387597502] [2020-11-30 02:09:50,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 02:09:50,966 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:09:50,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 02:09:50,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=23, Unknown=2, NotChecked=0, Total=42 [2020-11-30 02:09:50,976 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 7 states. [2020-11-30 02:10:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:10:07,934 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-11-30 02:10:07,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 02:10:07,935 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 7 [2020-11-30 02:10:07,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:10:07,936 INFO L225 Difference]: With dead ends: 36 [2020-11-30 02:10:07,936 INFO L226 Difference]: Without dead ends: 26 [2020-11-30 02:10:07,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 10.9s TimeCoverageRelationStatistics Valid=30, Invalid=40, Unknown=2, NotChecked=0, Total=72 [2020-11-30 02:10:07,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-30 02:10:07,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-11-30 02:10:07,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 02:10:07,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-11-30 02:10:07,944 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 7 [2020-11-30 02:10:07,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:10:07,947 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-11-30 02:10:07,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 02:10:07,948 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-11-30 02:10:07,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:10:07,949 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:10:07,949 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 02:10:08,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-30 02:10:08,173 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:10:08,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:10:08,174 INFO L82 PathProgramCache]: Analyzing trace with hash -162242810, now seen corresponding path program 1 times [2020-11-30 02:10:08,174 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:10:08,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77657847] [2020-11-30 02:10:08,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:10:08,191 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:10:08,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1464249193] [2020-11-30 02:10:08,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/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 [2020-11-30 02:10:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:10:08,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-30 02:10:08,259 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:10:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:10:08,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:10:08,513 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:10:10,617 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (div c_ULTIMATE.start_main_~r~0 4294967296)) (.cse4 (div (+ c_ULTIMATE.start_main_~r~0 (- 4294967296)) 4294967296)) (.cse0 (= c_ULTIMATE.start_main_~q~0 0))) (let ((.cse2 (not .cse0)) (.cse3 (* (mod c_ULTIMATE.start_main_~A~0 4294967296) (- 1))) (.cse5 (<= .cse6 .cse4))) (and (or .cse0 (forall ((aux_mod_v_ULTIMATE.start_main_~b~0_29_104 Int) (aux_div_v_ULTIMATE.start_main_~b~0_29_104 Int)) (let ((.cse1 (+ aux_mod_v_ULTIMATE.start_main_~b~0_29_104 (* c_ULTIMATE.start_main_~r~0 (- 1)) (* aux_div_v_ULTIMATE.start_main_~b~0_29_104 4294967296)))) (or (< aux_mod_v_ULTIMATE.start_main_~b~0_29_104 0) (<= 4294967296 aux_mod_v_ULTIMATE.start_main_~b~0_29_104) (= (mod c_ULTIMATE.start_main_~A~0 4294967296) aux_mod_v_ULTIMATE.start_main_~b~0_29_104) (not (= (mod .cse1 c_ULTIMATE.start_main_~q~0) 0)) (< (div .cse1 c_ULTIMATE.start_main_~q~0) (* 2 c_ULTIMATE.start_main_~b~0)))))) (or .cse2 (<= (div (+ .cse3 c_ULTIMATE.start_main_~r~0 (- 1)) 4294967296) .cse4) .cse5) (or .cse2 (<= .cse6 (div (+ .cse3 c_ULTIMATE.start_main_~r~0) 4294967296)) .cse5)))) is different from false [2020-11-30 02:10:10,660 INFO L603 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-11-30 02:10:12,781 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse6 (div c_ULTIMATE.start_main_~r~0 4294967296)) (.cse2 (div (+ c_ULTIMATE.start_main_~r~0 (- 4294967296)) 4294967296)) (.cse5 (= c_ULTIMATE.start_main_~q~0 0))) (let ((.cse0 (not .cse5)) (.cse1 (* (mod c_ULTIMATE.start_main_~A~0 4294967296) (- 1))) (.cse3 (<= .cse6 .cse2))) (and (or .cse0 (<= (div (+ .cse1 c_ULTIMATE.start_main_~r~0 (- 1)) 4294967296) .cse2) .cse3) (or (forall ((v_ULTIMATE.start_main_~b~0_30 Int) (aux_mod_v_ULTIMATE.start_main_~b~0_29_104 Int) (aux_div_v_ULTIMATE.start_main_~b~0_29_104 Int)) (let ((.cse4 (+ aux_mod_v_ULTIMATE.start_main_~b~0_29_104 (* c_ULTIMATE.start_main_~r~0 (- 1)) (* aux_div_v_ULTIMATE.start_main_~b~0_29_104 4294967296)))) (or (< aux_mod_v_ULTIMATE.start_main_~b~0_29_104 0) (< v_ULTIMATE.start_main_~b~0_30 (* 2 c_ULTIMATE.start_main_~b~0)) (<= 4294967296 aux_mod_v_ULTIMATE.start_main_~b~0_29_104) (= (mod c_ULTIMATE.start_main_~A~0 4294967296) aux_mod_v_ULTIMATE.start_main_~b~0_29_104) (< (div .cse4 c_ULTIMATE.start_main_~q~0) (* 2 v_ULTIMATE.start_main_~b~0_30)) (not (= (mod .cse4 c_ULTIMATE.start_main_~q~0) 0))))) .cse5) (or .cse0 (<= .cse6 (div (+ .cse1 c_ULTIMATE.start_main_~r~0) 4294967296)) .cse3)))) is different from false [2020-11-30 02:10:12,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 6 not checked. [2020-11-30 02:10:12,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77657847] [2020-11-30 02:10:12,815 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:10:12,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464249193] [2020-11-30 02:10:12,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-30 02:10:12,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2020-11-30 02:10:12,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551927538] [2020-11-30 02:10:12,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 02:10:12,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-11-30 02:10:12,818 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 02:10:12,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=27, Unknown=2, NotChecked=22, Total=72 [2020-11-30 02:10:12,819 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 6 states. [2020-11-30 02:10:13,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:10:13,084 INFO L93 Difference]: Finished difference Result 39 states and 42 transitions. [2020-11-30 02:10:13,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-30 02:10:13,084 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-30 02:10:13,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:10:13,085 INFO L225 Difference]: With dead ends: 39 [2020-11-30 02:10:13,086 INFO L226 Difference]: Without dead ends: 31 [2020-11-30 02:10:13,086 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=42, Invalid=54, Unknown=2, NotChecked=34, Total=132 [2020-11-30 02:10:13,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-30 02:10:13,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 22. [2020-11-30 02:10:13,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-30 02:10:13,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-11-30 02:10:13,095 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 11 [2020-11-30 02:10:13,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:10:13,096 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-11-30 02:10:13,096 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 02:10:13,096 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-11-30 02:10:13,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-30 02:10:13,098 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:10:13,098 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:10:13,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:10:13,312 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:10:13,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:10:13,313 INFO L82 PathProgramCache]: Analyzing trace with hash -2045983640, now seen corresponding path program 1 times [2020-11-30 02:10:13,313 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-11-30 02:10:13,313 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451751361] [2020-11-30 02:10:13,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 02:10:13,327 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 02:10:13,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [761594405] [2020-11-30 02:10:13,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/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 [2020-11-30 02:10:13,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:10:13,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 02:10:13,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:10:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:10:13,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:10:13,625 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:10:13,689 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-11-30 02:10:13,866 INFO L721 QuantifierPusher]: Run 10 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 02:10:14,100 INFO L721 QuantifierPusher]: Run 20 iterations of DualJunctionQuantifierElimination maybe there is a nontermination bug. [2020-11-30 02:11:18,048 WARN L193 SmtUtils]: Spent 59.02 s on a formula simplification. DAG size of input: 87 DAG size of output: 85 [2020-11-30 02:12:23,293 WARN L193 SmtUtils]: Spent 1.03 m on a formula simplification. DAG size of input: 86 DAG size of output: 86 [2020-11-30 02:12:23,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451751361] [2020-11-30 02:12:23,508 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 02:12:23,508 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761594405] [2020-11-30 02:12:23,508 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: null [2020-11-30 02:12:23,509 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1240133287] [2020-11-30 02:12:23,536 INFO L159 IcfgInterpreter]: Started Sifa with 9 locations of interest [2020-11-30 02:12:23,536 INFO L166 IcfgInterpreter]: Building call graph [2020-11-30 02:12:23,541 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2020-11-30 02:12:23,550 INFO L176 IcfgInterpreter]: Starting interpretation [2020-11-30 02:12:23,552 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2020-11-30 02:12:23,641 WARN L234 Elim1Store]: Array PQE input equivalent to false [2020-11-30 02:12:24,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:12:24,933 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: should have been removed by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.XnfTir.tryToEliminateConjuncts(XnfTir.java:271) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.XnfTir.tryToEliminateSingleDisjuct(XnfTir.java:143) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.XnfTir.tryToEliminate(XnfTir.java:114) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.applyEliminationInner(PartialQuantifierElimination.java:537) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.applyEliminationOuter(PartialQuantifierElimination.java:505) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.applyTir(PartialQuantifierElimination.java:441) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:285) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.quantifier(PartialQuantifierElimination.java:153) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.newQuantifier(SymbolicTools.java:279) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools$EliminatingTermDomainOperationProvider.projectExistentially(SymbolicTools.java:267) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.TermDomainOperationProvider.projectExistentially(TermDomainOperationProvider.java:1) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateTransformer.strongestPostcondition(PredicateTransformer.java:131) at de.uni_freiburg.informatik.ultimate.lib.sifa.SymbolicTools.post(SymbolicTools.java:116) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretInternal(DagInterpreter.java:227) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:209) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:187) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:165) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpretForSingleMarker(DagInterpreter.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarizeInternal(FixpointLoopSummarizer.java:118) at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1133) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.FixpointLoopSummarizer.summarize(FixpointLoopSummarizer.java:94) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretLoop(DagInterpreter.java:177) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:168) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:123) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:136) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:76) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:289) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:189) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:179) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 02:12:24,938 INFO L168 Benchmark]: Toolchain (without parser) took 166347.99 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 53.4 MB in the beginning and 39.4 MB in the end (delta: 14.0 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:12:24,938 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory was 58.0 MB in the beginning and 58.0 MB in the end (delta: 24.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:12:24,939 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.73 ms. Allocated memory is still 86.0 MB. Free memory was 53.1 MB in the beginning and 64.3 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 02:12:24,940 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.48 ms. Allocated memory is still 86.0 MB. Free memory was 64.3 MB in the beginning and 62.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:12:24,940 INFO L168 Benchmark]: Boogie Preprocessor took 47.09 ms. Allocated memory is still 86.0 MB. Free memory was 62.9 MB in the beginning and 61.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:12:24,941 INFO L168 Benchmark]: RCFGBuilder took 491.26 ms. Allocated memory is still 86.0 MB. Free memory was 61.6 MB in the beginning and 43.1 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-11-30 02:12:24,942 INFO L168 Benchmark]: TraceAbstraction took 165467.08 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 42.5 MB in the beginning and 39.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. [2020-11-30 02:12:24,955 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 86.0 MB. Free memory was 58.0 MB in the beginning and 58.0 MB in the end (delta: 24.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 288.73 ms. Allocated memory is still 86.0 MB. Free memory was 53.1 MB in the beginning and 64.3 MB in the end (delta: -11.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.48 ms. Allocated memory is still 86.0 MB. Free memory was 64.3 MB in the beginning and 62.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 47.09 ms. Allocated memory is still 86.0 MB. Free memory was 62.9 MB in the beginning and 61.6 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 491.26 ms. Allocated memory is still 86.0 MB. Free memory was 61.6 MB in the beginning and 43.1 MB in the end (delta: 18.5 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * TraceAbstraction took 165467.08 ms. Allocated memory was 86.0 MB in the beginning and 113.2 MB in the end (delta: 27.3 MB). Free memory was 42.5 MB in the beginning and 39.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 33.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: should have been removed by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: should have been removed by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.pqe.XnfTir.tryToEliminateConjuncts(XnfTir.java:271) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-a4ecdab [2020-11-30 02:12:27,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 02:12:27,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 02:12:27,632 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 02:12:27,633 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 02:12:27,638 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 02:12:27,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 02:12:27,646 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 02:12:27,649 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 02:12:27,655 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 02:12:27,657 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 02:12:27,662 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 02:12:27,663 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 02:12:27,669 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 02:12:27,685 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 02:12:27,687 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 02:12:27,688 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 02:12:27,692 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 02:12:27,696 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 02:12:27,704 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 02:12:27,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 02:12:27,709 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 02:12:27,717 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 02:12:27,718 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 02:12:27,721 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 02:12:27,721 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 02:12:27,722 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 02:12:27,723 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 02:12:27,723 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 02:12:27,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 02:12:27,725 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 02:12:27,726 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 02:12:27,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 02:12:27,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 02:12:27,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 02:12:27,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 02:12:27,736 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 02:12:27,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 02:12:27,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 02:12:27,738 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 02:12:27,739 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 02:12:27,740 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2020-11-30 02:12:27,783 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 02:12:27,783 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 02:12:27,785 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-11-30 02:12:27,785 INFO L138 SettingsManager]: * User list type=DISABLED [2020-11-30 02:12:27,785 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-11-30 02:12:27,785 INFO L138 SettingsManager]: * Explicit value domain=true [2020-11-30 02:12:27,786 INFO L138 SettingsManager]: * Octagon Domain=false [2020-11-30 02:12:27,786 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-11-30 02:12:27,786 INFO L138 SettingsManager]: * Interval Domain=false [2020-11-30 02:12:27,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 02:12:27,789 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 02:12:27,790 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 02:12:27,790 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 02:12:27,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 02:12:27,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 02:12:27,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 02:12:27,790 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-11-30 02:12:27,791 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-11-30 02:12:27,791 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-11-30 02:12:27,791 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 02:12:27,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 02:12:27,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 02:12:27,792 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 02:12:27,792 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 02:12:27,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 02:12:27,792 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 02:12:27,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 02:12:27,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 02:12:27,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 02:12:27,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 02:12:27,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 02:12:27,793 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-11-30 02:12:27,794 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-11-30 02:12:27,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 02:12:27,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 02:12:27,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-11-30 02:12:27,794 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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_00352c71-ca45-4e02-8d83-b482d0a1f599/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e283d38072468e4209531e67c50246e3b5ee7de [2020-11-30 02:12:28,219 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 02:12:28,249 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 02:12:28,252 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 02:12:28,253 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 02:12:28,254 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 02:12:28,255 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound5.i [2020-11-30 02:12:28,339 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/data/634597571/72cc6a46d7fe4370833a8ed09bea26f7/FLAG514054be5 [2020-11-30 02:12:29,025 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 02:12:29,027 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/sv-benchmarks/c/nla-digbench-scaling/divbin2_valuebound5.i [2020-11-30 02:12:29,036 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/data/634597571/72cc6a46d7fe4370833a8ed09bea26f7/FLAG514054be5 [2020-11-30 02:12:29,340 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/data/634597571/72cc6a46d7fe4370833a8ed09bea26f7 [2020-11-30 02:12:29,343 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 02:12:29,344 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 02:12:29,346 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 02:12:29,346 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 02:12:29,362 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 02:12:29,363 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:12:29" (1/1) ... [2020-11-30 02:12:29,366 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@549d73cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:29, skipping insertion in model container [2020-11-30 02:12:29,366 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 02:12:29" (1/1) ... [2020-11-30 02:12:29,377 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 02:12:29,397 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 02:12:29,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:12:29,592 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 02:12:29,610 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 02:12:29,626 INFO L208 MainTranslator]: Completed translation [2020-11-30 02:12:29,627 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:29 WrapperNode [2020-11-30 02:12:29,627 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 02:12:29,628 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 02:12:29,628 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 02:12:29,629 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 02:12:29,637 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:29" (1/1) ... [2020-11-30 02:12:29,646 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:29" (1/1) ... [2020-11-30 02:12:29,671 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 02:12:29,672 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 02:12:29,672 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 02:12:29,672 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 02:12:29,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:29" (1/1) ... [2020-11-30 02:12:29,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:29" (1/1) ... [2020-11-30 02:12:29,684 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:29" (1/1) ... [2020-11-30 02:12:29,684 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:29" (1/1) ... [2020-11-30 02:12:29,689 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:29" (1/1) ... [2020-11-30 02:12:29,694 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:29" (1/1) ... [2020-11-30 02:12:29,708 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:29" (1/1) ... [2020-11-30 02:12:29,711 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 02:12:29,718 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 02:12:29,719 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 02:12:29,719 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 02:12:29,720 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:29" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/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 [2020-11-30 02:12:29,801 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-11-30 02:12:29,802 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 02:12:29,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 02:12:29,805 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 02:12:30,422 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 02:12:30,422 INFO L298 CfgBuilder]: Removed 16 assume(true) statements. [2020-11-30 02:12:30,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:12:30 BoogieIcfgContainer [2020-11-30 02:12:30,424 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 02:12:30,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 02:12:30,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 02:12:30,432 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 02:12:30,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 02:12:29" (1/3) ... [2020-11-30 02:12:30,433 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2107cba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:12:30, skipping insertion in model container [2020-11-30 02:12:30,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 02:12:29" (2/3) ... [2020-11-30 02:12:30,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2107cba2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 02:12:30, skipping insertion in model container [2020-11-30 02:12:30,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 02:12:30" (3/3) ... [2020-11-30 02:12:30,436 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin2_valuebound5.i [2020-11-30 02:12:30,448 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 02:12:30,453 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 02:12:30,466 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 02:12:30,508 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 02:12:30,508 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 02:12:30,508 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 02:12:30,508 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 02:12:30,509 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 02:12:30,509 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 02:12:30,509 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 02:12:30,509 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 02:12:30,522 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-30 02:12:30,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 02:12:30,528 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:12:30,529 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:12:30,529 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:12:30,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:12:30,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1104570084, now seen corresponding path program 1 times [2020-11-30 02:12:30,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:12:30,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1740090183] [2020-11-30 02:12:30,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-11-30 02:12:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:12:30,642 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 1 conjunts are in the unsatisfiable core [2020-11-30 02:12:30,647 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:12:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:30,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:12:30,666 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:30,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1740090183] [2020-11-30 02:12:30,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:12:30,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-11-30 02:12:30,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1780832713] [2020-11-30 02:12:30,671 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-30 02:12:30,671 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:12:30,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-30 02:12:30,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:12:30,695 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-11-30 02:12:30,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:12:30,713 INFO L93 Difference]: Finished difference Result 45 states and 66 transitions. [2020-11-30 02:12:30,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-30 02:12:30,715 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-11-30 02:12:30,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:12:30,724 INFO L225 Difference]: With dead ends: 45 [2020-11-30 02:12:30,724 INFO L226 Difference]: Without dead ends: 20 [2020-11-30 02:12:30,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-30 02:12:30,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-30 02:12:30,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-30 02:12:30,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 02:12:30,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-11-30 02:12:30,762 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 10 [2020-11-30 02:12:30,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:12:30,762 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-30 02:12:30,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-30 02:12:30,763 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-11-30 02:12:30,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-30 02:12:30,763 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:12:30,764 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:12:30,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-11-30 02:12:30,983 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:12:30,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:12:30,985 INFO L82 PathProgramCache]: Analyzing trace with hash -2096849699, now seen corresponding path program 1 times [2020-11-30 02:12:30,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:12:30,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [51810391] [2020-11-30 02:12:30,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-11-30 02:12:31,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:12:31,044 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 02:12:31,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:12:31,153 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:12:31,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:31,295 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:12:31,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:31,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [51810391] [2020-11-30 02:12:31,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:12:31,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 10 [2020-11-30 02:12:31,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611233089] [2020-11-30 02:12:31,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-30 02:12:31,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:12:31,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-30 02:12:31,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-11-30 02:12:31,819 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 10 states. [2020-11-30 02:12:32,604 WARN L193 SmtUtils]: Spent 335.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 13 [2020-11-30 02:12:33,223 WARN L193 SmtUtils]: Spent 294.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-11-30 02:12:38,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:12:38,014 INFO L93 Difference]: Finished difference Result 47 states and 55 transitions. [2020-11-30 02:12:38,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-30 02:12:38,017 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-11-30 02:12:38,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:12:38,018 INFO L225 Difference]: With dead ends: 47 [2020-11-30 02:12:38,018 INFO L226 Difference]: Without dead ends: 35 [2020-11-30 02:12:38,019 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-11-30 02:12:38,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-11-30 02:12:38,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2020-11-30 02:12:38,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 02:12:38,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-11-30 02:12:38,028 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 11 [2020-11-30 02:12:38,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:12:38,028 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-11-30 02:12:38,029 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-30 02:12:38,029 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-11-30 02:12:38,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 02:12:38,029 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:12:38,030 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:12:38,245 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-11-30 02:12:38,246 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:12:38,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:12:38,246 INFO L82 PathProgramCache]: Analyzing trace with hash 2120747147, now seen corresponding path program 1 times [2020-11-30 02:12:38,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:12:38,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1819923137] [2020-11-30 02:12:38,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-11-30 02:12:38,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:12:38,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-30 02:12:38,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:12:38,340 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:38,340 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:12:38,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:38,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1819923137] [2020-11-30 02:12:38,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-11-30 02:12:38,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2020-11-30 02:12:38,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863605333] [2020-11-30 02:12:38,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-30 02:12:38,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:12:38,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-30 02:12:38,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:12:38,349 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 3 states. [2020-11-30 02:12:38,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:12:38,453 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-11-30 02:12:38,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-30 02:12:38,457 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-11-30 02:12:38,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:12:38,458 INFO L225 Difference]: With dead ends: 48 [2020-11-30 02:12:38,458 INFO L226 Difference]: Without dead ends: 27 [2020-11-30 02:12:38,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-30 02:12:38,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-30 02:12:38,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-30 02:12:38,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-30 02:12:38,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-11-30 02:12:38,472 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 15 [2020-11-30 02:12:38,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:12:38,473 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-11-30 02:12:38,473 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-30 02:12:38,473 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-11-30 02:12:38,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 02:12:38,474 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:12:38,475 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:12:38,693 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-11-30 02:12:38,694 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:12:38,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:12:38,694 INFO L82 PathProgramCache]: Analyzing trace with hash 2060482771, now seen corresponding path program 1 times [2020-11-30 02:12:38,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:12:38,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [574102152] [2020-11-30 02:12:38,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-11-30 02:12:38,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:12:38,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 02:12:38,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:12:38,803 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:12:38,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:38,999 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:12:40,145 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 16 [2020-11-30 02:12:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:40,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [574102152] [2020-11-30 02:12:40,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [343135601] [2020-11-30 02:12:40,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/cvc4 Starting monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 02:12:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:12:40,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:12:40,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:12:40,454 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:40,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:12:41,160 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:41,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [529019267] [2020-11-30 02:12:41,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:12:41,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:12:41,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 02:12:41,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:12:41,229 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:12:41,247 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:41,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:12:41,281 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:41,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 02:12:41,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 6, 6, 9, 7] total 19 [2020-11-30 02:12:41,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27304678] [2020-11-30 02:12:41,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-30 02:12:41,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:12:41,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-30 02:12:41,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-11-30 02:12:41,288 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 19 states. [2020-11-30 02:12:42,320 WARN L193 SmtUtils]: Spent 192.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 17 [2020-11-30 02:12:42,955 WARN L193 SmtUtils]: Spent 281.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-11-30 02:12:43,417 WARN L193 SmtUtils]: Spent 202.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 22 [2020-11-30 02:12:43,883 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-11-30 02:12:45,590 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-11-30 02:12:46,320 WARN L193 SmtUtils]: Spent 305.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2020-11-30 02:12:47,070 WARN L193 SmtUtils]: Spent 303.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2020-11-30 02:12:47,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:12:47,413 INFO L93 Difference]: Finished difference Result 87 states and 105 transitions. [2020-11-30 02:12:47,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-30 02:12:47,416 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 15 [2020-11-30 02:12:47,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:12:47,417 INFO L225 Difference]: With dead ends: 87 [2020-11-30 02:12:47,418 INFO L226 Difference]: Without dead ends: 67 [2020-11-30 02:12:47,419 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 260 ImplicationChecksByTransitivity, 5.9s TimeCoverageRelationStatistics Valid=331, Invalid=929, Unknown=0, NotChecked=0, Total=1260 [2020-11-30 02:12:47,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-30 02:12:47,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 29. [2020-11-30 02:12:47,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-30 02:12:47,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-11-30 02:12:47,427 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 15 [2020-11-30 02:12:47,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:12:47,427 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-11-30 02:12:47,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-30 02:12:47,428 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-11-30 02:12:47,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-11-30 02:12:47,429 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:12:47,429 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:12:48,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3,6 cvc4 --incremental --print-success --lang smt --rewrite-divk,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:12:48,042 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:12:48,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:12:48,043 INFO L82 PathProgramCache]: Analyzing trace with hash 952501652, now seen corresponding path program 1 times [2020-11-30 02:12:48,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:12:48,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1559351542] [2020-11-30 02:12:48,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-11-30 02:12:48,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:12:48,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:12:48,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:12:48,148 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:48,149 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:12:48,205 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:48,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1559351542] [2020-11-30 02:12:48,206 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1686649005] [2020-11-30 02:12:48,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/cvc4 Starting monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 02:12:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:12:48,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:12:48,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:12:48,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:48,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:12:48,279 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:48,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785340731] [2020-11-30 02:12:48,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:12:48,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:12:48,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-30 02:12:48,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:12:48,361 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:48,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:12:48,368 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:48,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 02:12:48,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 4, 5, 4, 5] total 7 [2020-11-30 02:12:48,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109574332] [2020-11-30 02:12:48,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 02:12:48,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:12:48,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 02:12:48,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:12:48,371 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 7 states. [2020-11-30 02:12:48,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:12:48,541 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-11-30 02:12:48,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 02:12:48,544 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-11-30 02:12:48,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:12:48,544 INFO L225 Difference]: With dead ends: 62 [2020-11-30 02:12:48,544 INFO L226 Difference]: Without dead ends: 31 [2020-11-30 02:12:48,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 112 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-30 02:12:48,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-30 02:12:48,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-30 02:12:48,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-30 02:12:48,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-11-30 02:12:48,557 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 21 [2020-11-30 02:12:48,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:12:48,557 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-11-30 02:12:48,558 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 02:12:48,558 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-11-30 02:12:48,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 02:12:48,559 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:12:48,559 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:12:49,160 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 cvc4 --incremental --print-success --lang smt --rewrite-divk,8 mathsat -unsat_core_generation=3,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:12:49,161 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:12:49,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:12:49,161 INFO L82 PathProgramCache]: Analyzing trace with hash -13274321, now seen corresponding path program 2 times [2020-11-30 02:12:49,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:12:49,162 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026593246] [2020-11-30 02:12:49,162 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-11-30 02:12:49,237 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 02:12:49,238 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:12:49,244 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-30 02:12:49,245 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:12:49,304 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:12:49,804 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:49,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:12:51,736 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-30 02:12:52,159 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-30 02:12:52,696 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-30 02:12:52,727 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:52,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026593246] [2020-11-30 02:12:52,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [692766426] [2020-11-30 02:12:52,728 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/cvc4 Starting monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 02:12:52,932 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 02:12:52,932 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:12:52,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 02:12:52,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:12:53,328 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:53,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:12:53,732 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:53,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1493844108] [2020-11-30 02:12:53,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:12:53,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 02:12:53,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:12:53,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-30 02:12:53,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:12:53,801 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:12:54,039 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:54,040 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:12:54,535 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 02:12:54,538 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 02:12:54,538 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:12:55,241 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-11-30 02:12:55,960 WARN L193 SmtUtils]: Spent 217.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-11-30 02:12:56,782 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-30 02:12:57,558 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-11-30 02:12:58,926 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-11-30 02:12:59,641 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:12:59,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 02:12:59,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 11, 11, 14, 12] total 33 [2020-11-30 02:12:59,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246920301] [2020-11-30 02:12:59,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-30 02:12:59,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:12:59,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-30 02:12:59,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=825, Unknown=0, NotChecked=0, Total=1056 [2020-11-30 02:12:59,646 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 33 states. [2020-11-30 02:13:10,948 WARN L193 SmtUtils]: Spent 8.99 s on a formula simplification. DAG size of input: 83 DAG size of output: 65 [2020-11-30 02:13:19,300 WARN L193 SmtUtils]: Spent 5.61 s on a formula simplification. DAG size of input: 73 DAG size of output: 67 [2020-11-30 02:13:33,165 WARN L193 SmtUtils]: Spent 12.31 s on a formula simplification. DAG size of input: 87 DAG size of output: 70 [2020-11-30 02:13:49,226 WARN L193 SmtUtils]: Spent 15.13 s on a formula simplification. DAG size of input: 72 DAG size of output: 60 [2020-11-30 02:13:56,185 WARN L193 SmtUtils]: Spent 4.43 s on a formula simplification. DAG size of input: 76 DAG size of output: 70 [2020-11-30 02:14:03,476 WARN L193 SmtUtils]: Spent 587.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-11-30 02:14:17,745 WARN L193 SmtUtils]: Spent 13.42 s on a formula simplification. DAG size of input: 75 DAG size of output: 64 [2020-11-30 02:14:24,855 WARN L193 SmtUtils]: Spent 386.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-11-30 02:14:28,812 WARN L193 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-11-30 02:14:34,232 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 72 DAG size of output: 61 [2020-11-30 02:14:38,772 WARN L193 SmtUtils]: Spent 2.38 s on a formula simplification. DAG size of input: 77 DAG size of output: 71 [2020-11-30 02:14:41,239 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification. DAG size of input: 52 DAG size of output: 46 [2020-11-30 02:14:43,334 WARN L193 SmtUtils]: Spent 590.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-11-30 02:14:45,813 WARN L193 SmtUtils]: Spent 1.15 s on a formula simplification. DAG size of input: 55 DAG size of output: 50 [2020-11-30 02:14:52,894 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2020-11-30 02:14:58,048 WARN L193 SmtUtils]: Spent 2.44 s on a formula simplification. DAG size of input: 73 DAG size of output: 61 [2020-11-30 02:15:01,287 WARN L193 SmtUtils]: Spent 425.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2020-11-30 02:15:07,261 WARN L193 SmtUtils]: Spent 2.33 s on a formula simplification. DAG size of input: 76 DAG size of output: 65 [2020-11-30 02:15:12,417 WARN L193 SmtUtils]: Spent 363.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-11-30 02:15:13,738 WARN L193 SmtUtils]: Spent 718.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 40 [2020-11-30 02:15:15,040 WARN L193 SmtUtils]: Spent 515.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 39 [2020-11-30 02:15:19,151 WARN L193 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 73 DAG size of output: 62 [2020-11-30 02:15:27,459 WARN L193 SmtUtils]: Spent 7.51 s on a formula simplification. DAG size of input: 93 DAG size of output: 88 [2020-11-30 02:15:29,075 WARN L193 SmtUtils]: Spent 609.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 35 [2020-11-30 02:15:31,486 WARN L193 SmtUtils]: Spent 924.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 35 [2020-11-30 02:15:35,141 WARN L193 SmtUtils]: Spent 462.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-11-30 02:15:47,008 WARN L193 SmtUtils]: Spent 10.64 s on a formula simplification. DAG size of input: 92 DAG size of output: 81 [2020-11-30 02:15:48,286 WARN L193 SmtUtils]: Spent 716.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-11-30 02:15:58,531 WARN L193 SmtUtils]: Spent 973.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-11-30 02:15:59,645 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-11-30 02:16:13,140 WARN L193 SmtUtils]: Spent 12.27 s on a formula simplification. DAG size of input: 91 DAG size of output: 80 [2020-11-30 02:16:15,994 WARN L193 SmtUtils]: Spent 1.18 s on a formula simplification. DAG size of input: 53 DAG size of output: 47 [2020-11-30 02:16:16,778 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2020-11-30 02:16:23,805 WARN L193 SmtUtils]: Spent 5.17 s on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2020-11-30 02:16:25,201 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-11-30 02:16:26,486 WARN L193 SmtUtils]: Spent 314.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 20 [2020-11-30 02:16:27,301 WARN L193 SmtUtils]: Spent 267.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2020-11-30 02:16:33,237 WARN L193 SmtUtils]: Spent 4.45 s on a formula simplification. DAG size of input: 85 DAG size of output: 73 [2020-11-30 02:16:34,234 WARN L193 SmtUtils]: Spent 306.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2020-11-30 02:16:35,862 WARN L193 SmtUtils]: Spent 967.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-11-30 02:16:36,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:16:36,624 INFO L93 Difference]: Finished difference Result 171 states and 198 transitions. [2020-11-30 02:16:36,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-11-30 02:16:36,628 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 23 [2020-11-30 02:16:36,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:16:36,631 INFO L225 Difference]: With dead ends: 171 [2020-11-30 02:16:36,631 INFO L226 Difference]: Without dead ends: 142 [2020-11-30 02:16:36,635 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 195 GetRequests, 107 SyntacticMatches, 4 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 2219 ImplicationChecksByTransitivity, 173.5s TimeCoverageRelationStatistics Valid=1363, Invalid=5947, Unknown=0, NotChecked=0, Total=7310 [2020-11-30 02:16:36,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-30 02:16:36,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 60. [2020-11-30 02:16:36,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-30 02:16:36,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2020-11-30 02:16:36,652 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 23 [2020-11-30 02:16:36,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:16:36,652 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2020-11-30 02:16:36,652 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-11-30 02:16:36,652 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2020-11-30 02:16:36,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-30 02:16:36,653 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:16:36,653 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:16:37,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 cvc4 --incremental --print-success --lang smt --rewrite-divk,13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 mathsat -unsat_core_generation=3 [2020-11-30 02:16:37,266 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:16:37,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:16:37,266 INFO L82 PathProgramCache]: Analyzing trace with hash -353790136, now seen corresponding path program 1 times [2020-11-30 02:16:37,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:16:37,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1072223147] [2020-11-30 02:16:37,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-11-30 02:16:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:16:37,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 23 conjunts are in the unsatisfiable core [2020-11-30 02:16:37,348 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:16:37,378 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:16:37,777 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:16:37,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:16:38,489 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 02:16:38,489 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:16:38,923 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 15 [2020-11-30 02:16:39,497 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 02:16:39,983 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-11-30 02:16:40,746 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-30 02:16:41,241 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 02:16:41,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1072223147] [2020-11-30 02:16:41,242 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1084629236] [2020-11-30 02:16:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/cvc4 Starting monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 02:16:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:16:41,485 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-30 02:16:41,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:16:41,809 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 02:16:41,809 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:16:42,012 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:16:42,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:16:42,040 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 02:16:42,040 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:16:42,041 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 2, 1] term [2020-11-30 02:16:42,042 INFO L603 QuantifierPusher]: Distributing 1 disjuncts over 2 conjuncts [2020-11-30 02:16:46,419 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 14 [2020-11-30 02:16:52,275 WARN L860 $PredicateComparison]: unable to prove that (let ((.cse0 (bvudiv (bvmul c_ULTIMATE.start_main_~b~0 (_ bv4 32)) (_ bv2 32)))) (= (bvadd .cse0 (bvmul (_ bv2 32) (bvmul .cse0 c_ULTIMATE.start_main_~q~0))) (let ((.cse1 (bvudiv .cse0 (_ bv2 32)))) (bvadd (bvmul (_ bv2 32) .cse1) (bvmul (_ bv4 32) (bvmul .cse1 c_ULTIMATE.start_main_~q~0)))))) is different from true [2020-11-30 02:16:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2020-11-30 02:16:52,390 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256709047] [2020-11-30 02:16:52,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:16:52,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 02:16:52,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 02:16:52,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:16:52,443 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:16:52,768 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 02:16:52,768 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:16:52,867 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:16:52,867 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:16:54,711 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 02:16:54,711 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:17:01,677 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-30 02:17:03,077 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-11-30 02:17:03,177 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-11-30 02:17:03,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 02:17:03,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 11, 11, 15, 12] total 46 [2020-11-30 02:17:03,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2002019803] [2020-11-30 02:17:03,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 46 states [2020-11-30 02:17:03,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:17:03,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2020-11-30 02:17:03,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=460, Invalid=1520, Unknown=4, NotChecked=86, Total=2070 [2020-11-30 02:17:03,180 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand 46 states. [2020-11-30 02:17:07,063 WARN L193 SmtUtils]: Spent 1.37 s on a formula simplification. DAG size of input: 57 DAG size of output: 41 [2020-11-30 02:17:12,336 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 31 [2020-11-30 02:17:25,748 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-11-30 02:17:29,771 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification. DAG size of input: 65 DAG size of output: 60 [2020-11-30 02:17:30,999 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 32 DAG size of output: 27 [2020-11-30 02:17:32,761 WARN L193 SmtUtils]: Spent 317.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-11-30 02:17:33,943 WARN L193 SmtUtils]: Spent 357.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 19 [2020-11-30 02:17:38,850 WARN L193 SmtUtils]: Spent 782.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 47 [2020-11-30 02:17:41,152 WARN L193 SmtUtils]: Spent 661.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 45 [2020-11-30 02:17:43,492 WARN L193 SmtUtils]: Spent 783.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 48 [2020-11-30 02:17:45,507 WARN L193 SmtUtils]: Spent 641.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 40 [2020-11-30 02:17:48,227 WARN L193 SmtUtils]: Spent 1.95 s on a formula simplification. DAG size of input: 78 DAG size of output: 70 [2020-11-30 02:17:49,072 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 20 [2020-11-30 02:17:51,180 WARN L193 SmtUtils]: Spent 606.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2020-11-30 02:17:53,151 WARN L193 SmtUtils]: Spent 825.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 49 [2020-11-30 02:18:06,519 WARN L193 SmtUtils]: Spent 371.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-11-30 02:18:08,606 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-11-30 02:18:10,475 WARN L193 SmtUtils]: Spent 563.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-11-30 02:18:11,769 WARN L193 SmtUtils]: Spent 490.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-11-30 02:18:23,259 WARN L193 SmtUtils]: Spent 724.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 32 [2020-11-30 02:18:30,414 WARN L193 SmtUtils]: Spent 455.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 33 [2020-11-30 02:18:32,289 WARN L193 SmtUtils]: Spent 514.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2020-11-30 02:18:40,605 WARN L193 SmtUtils]: Spent 574.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 26 [2020-11-30 02:18:44,735 WARN L193 SmtUtils]: Spent 2.51 s on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2020-11-30 02:18:50,796 WARN L193 SmtUtils]: Spent 2.93 s on a formula simplification. DAG size of input: 40 DAG size of output: 27 [2020-11-30 02:18:57,721 WARN L193 SmtUtils]: Spent 1.17 s on a formula simplification. DAG size of input: 45 DAG size of output: 28 [2020-11-30 02:18:59,071 WARN L193 SmtUtils]: Spent 693.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-11-30 02:19:04,999 WARN L193 SmtUtils]: Spent 491.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-11-30 02:19:06,297 WARN L193 SmtUtils]: Spent 228.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2020-11-30 02:19:07,112 WARN L193 SmtUtils]: Spent 229.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-11-30 02:19:14,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:19:14,094 INFO L93 Difference]: Finished difference Result 166 states and 203 transitions. [2020-11-30 02:19:14,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-11-30 02:19:14,099 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 25 [2020-11-30 02:19:14,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:19:14,100 INFO L225 Difference]: With dead ends: 166 [2020-11-30 02:19:14,100 INFO L226 Difference]: Without dead ends: 126 [2020-11-30 02:19:14,103 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 97 SyntacticMatches, 7 SemanticMatches, 87 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2410 ImplicationChecksByTransitivity, 101.4s TimeCoverageRelationStatistics Valid=1512, Invalid=6141, Unknown=7, NotChecked=172, Total=7832 [2020-11-30 02:19:14,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-11-30 02:19:14,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 84. [2020-11-30 02:19:14,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-30 02:19:14,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2020-11-30 02:19:14,128 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 25 [2020-11-30 02:19:14,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:19:14,128 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2020-11-30 02:19:14,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 46 states. [2020-11-30 02:19:14,128 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2020-11-30 02:19:14,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-30 02:19:14,129 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:19:14,130 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:19:14,736 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 mathsat -unsat_core_generation=3,15 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 02:19:14,737 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:19:14,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:19:14,737 INFO L82 PathProgramCache]: Analyzing trace with hash 784426461, now seen corresponding path program 3 times [2020-11-30 02:19:14,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:19:14,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894169324] [2020-11-30 02:19:14,738 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-11-30 02:19:14,827 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-30 02:19:14,828 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:19:14,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-30 02:19:14,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:19:14,865 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:19:14,956 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:14,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:19:15,076 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:15,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894169324] [2020-11-30 02:19:15,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1568882946] [2020-11-30 02:19:15,076 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/cvc4 Starting monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 02:19:15,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-30 02:19:15,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:19:15,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:19:15,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:19:15,299 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:15,300 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:19:15,349 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:15,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984761218] [2020-11-30 02:19:15,349 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:19:15,433 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-30 02:19:15,433 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:19:15,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 02:19:15,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:19:15,526 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:15,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:19:15,531 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:15,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 02:19:15,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 5, 7, 5, 7] total 16 [2020-11-30 02:19:15,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974020695] [2020-11-30 02:19:15,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-30 02:19:15,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:19:15,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-30 02:19:15,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2020-11-30 02:19:15,533 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand 16 states. [2020-11-30 02:19:16,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:19:16,556 INFO L93 Difference]: Finished difference Result 115 states and 133 transitions. [2020-11-30 02:19:16,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-30 02:19:16,560 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 27 [2020-11-30 02:19:16,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:19:16,561 INFO L225 Difference]: With dead ends: 115 [2020-11-30 02:19:16,561 INFO L226 Difference]: Without dead ends: 68 [2020-11-30 02:19:16,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 137 SyntacticMatches, 6 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=151, Invalid=551, Unknown=0, NotChecked=0, Total=702 [2020-11-30 02:19:16,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-30 02:19:16,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 54. [2020-11-30 02:19:16,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-11-30 02:19:16,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2020-11-30 02:19:16,582 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 27 [2020-11-30 02:19:16,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:19:16,584 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2020-11-30 02:19:16,584 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 02:19:16,584 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2020-11-30 02:19:16,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-11-30 02:19:16,586 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:19:16,586 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:19:17,203 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,18 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 02:19:17,204 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:19:17,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:19:17,204 INFO L82 PathProgramCache]: Analyzing trace with hash 488887670, now seen corresponding path program 2 times [2020-11-30 02:19:17,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:19:17,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1983193918] [2020-11-30 02:19:17,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-11-30 02:19:17,284 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 02:19:17,285 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:19:17,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-30 02:19:17,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:19:17,324 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:19:17,777 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:17,777 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:19:19,223 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-11-30 02:19:19,225 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 02:19:19,225 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:19:19,688 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-11-30 02:19:20,360 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-30 02:19:20,925 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-11-30 02:19:22,021 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-11-30 02:19:22,867 WARN L193 SmtUtils]: Spent 232.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2020-11-30 02:19:23,143 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:23,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1983193918] [2020-11-30 02:19:23,144 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [999097890] [2020-11-30 02:19:23,144 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/cvc4 Starting monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 02:19:23,344 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 02:19:23,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:19:23,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-30 02:19:23,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:19:23,858 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:23,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:19:26,055 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-30 02:19:28,151 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-11-30 02:19:29,892 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:29,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [264688483] [2020-11-30 02:19:29,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:19:29,950 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 02:19:29,950 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:19:29,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-30 02:19:29,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:19:29,958 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:19:30,532 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 02:19:30,532 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:19:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:30,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:19:31,399 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-11-30 02:19:31,417 INFO L375 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-11-30 02:19:31,417 INFO L603 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-11-30 02:19:36,235 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-11-30 02:19:37,569 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-11-30 02:19:38,053 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:19:38,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 02:19:38,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 14, 13, 17, 15] total 52 [2020-11-30 02:19:38,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335028976] [2020-11-30 02:19:38,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 52 states [2020-11-30 02:19:38,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:19:38,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2020-11-30 02:19:38,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=551, Invalid=2101, Unknown=0, NotChecked=0, Total=2652 [2020-11-30 02:19:38,057 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 52 states. [2020-11-30 02:19:51,518 WARN L193 SmtUtils]: Spent 8.95 s on a formula simplification. DAG size of input: 180 DAG size of output: 173 [2020-11-30 02:19:58,604 WARN L193 SmtUtils]: Spent 688.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-11-30 02:20:27,287 WARN L193 SmtUtils]: Spent 27.18 s on a formula simplification. DAG size of input: 181 DAG size of output: 151 [2020-11-30 02:20:29,113 WARN L193 SmtUtils]: Spent 753.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-11-30 02:21:01,526 WARN L193 SmtUtils]: Spent 28.55 s on a formula simplification. DAG size of input: 181 DAG size of output: 151 [2020-11-30 02:21:03,394 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-11-30 02:21:16,371 WARN L193 SmtUtils]: Spent 10.77 s on a formula simplification. DAG size of input: 180 DAG size of output: 150 [2020-11-30 02:21:18,837 WARN L193 SmtUtils]: Spent 372.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2020-11-30 02:21:35,601 WARN L193 SmtUtils]: Spent 4.10 s on a formula simplification. DAG size of input: 117 DAG size of output: 93 [2020-11-30 02:21:49,396 WARN L193 SmtUtils]: Spent 2.24 s on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-11-30 02:22:09,780 WARN L193 SmtUtils]: Spent 4.46 s on a formula simplification. DAG size of input: 66 DAG size of output: 53 [2020-11-30 02:22:38,863 WARN L193 SmtUtils]: Spent 21.21 s on a formula simplification. DAG size of input: 118 DAG size of output: 108 [2020-11-30 02:22:48,312 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-11-30 02:22:55,679 WARN L193 SmtUtils]: Spent 4.34 s on a formula simplification. DAG size of input: 72 DAG size of output: 53 [2020-11-30 02:23:18,238 WARN L193 SmtUtils]: Spent 14.62 s on a formula simplification. DAG size of input: 115 DAG size of output: 105 [2020-11-30 02:23:19,395 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 30 DAG size of output: 25 [2020-11-30 02:23:22,003 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 21 [2020-11-30 02:23:25,358 WARN L193 SmtUtils]: Spent 348.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-11-30 02:23:35,323 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-11-30 02:23:42,985 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 17 [2020-11-30 02:23:59,406 WARN L193 SmtUtils]: Spent 1.05 s on a formula simplification. DAG size of input: 51 DAG size of output: 46 [2020-11-30 02:24:06,108 WARN L193 SmtUtils]: Spent 3.34 s on a formula simplification. DAG size of input: 73 DAG size of output: 68 [2020-11-30 02:24:15,976 WARN L193 SmtUtils]: Spent 2.07 s on a formula simplification. DAG size of input: 61 DAG size of output: 56 [2020-11-30 02:24:17,347 WARN L193 SmtUtils]: Spent 369.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 18 [2020-11-30 02:24:25,939 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 74 DAG size of output: 69 [2020-11-30 02:24:34,499 WARN L193 SmtUtils]: Spent 3.21 s on a formula simplification. DAG size of input: 82 DAG size of output: 77 [2020-11-30 02:24:42,389 WARN L193 SmtUtils]: Spent 1.74 s on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-11-30 02:24:42,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:42,985 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2020-11-30 02:24:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2020-11-30 02:24:43,002 INFO L78 Accepts]: Start accepts. Automaton has 52 states. Word has length 29 [2020-11-30 02:24:43,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:43,003 INFO L225 Difference]: With dead ends: 119 [2020-11-30 02:24:43,003 INFO L226 Difference]: Without dead ends: 103 [2020-11-30 02:24:43,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 213 GetRequests, 116 SyntacticMatches, 7 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2551 ImplicationChecksByTransitivity, 247.8s TimeCoverageRelationStatistics Valid=1484, Invalid=6876, Unknown=12, NotChecked=0, Total=8372 [2020-11-30 02:24:43,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-30 02:24:43,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 64. [2020-11-30 02:24:43,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-30 02:24:43,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-11-30 02:24:43,025 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 29 [2020-11-30 02:24:43,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:43,025 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-11-30 02:24:43,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 52 states. [2020-11-30 02:24:43,026 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-11-30 02:24:43,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-30 02:24:43,027 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 02:24:43,027 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-30 02:24:43,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3,22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,21 cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 02:24:43,636 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 02:24:43,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 02:24:43,637 INFO L82 PathProgramCache]: Analyzing trace with hash 244796580, now seen corresponding path program 3 times [2020-11-30 02:24:43,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-11-30 02:24:43,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1968362677] [2020-11-30 02:24:43,638 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2020-11-30 02:24:43,799 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-30 02:24:43,800 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:24:43,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 02:24:43,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:24:43,850 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 02:24:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:43,997 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:24:44,272 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:44,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1968362677] [2020-11-30 02:24:44,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2045064744] [2020-11-30 02:24:44,273 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/cvc4 Starting monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2020-11-30 02:24:44,569 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-30 02:24:44,569 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:24:44,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:24:44,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:24:44,694 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:44,694 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:24:44,809 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:44,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [274118796] [2020-11-30 02:24:44,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_00352c71-ca45-4e02-8d83-b482d0a1f599/bin/utaipan/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:24:45,016 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2020-11-30 02:24:45,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 02:24:45,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 02:24:45,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 02:24:45,157 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:45,157 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-11-30 02:24:45,165 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 11 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 02:24:45,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2020-11-30 02:24:45,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 6, 9, 6, 9] total 21 [2020-11-30 02:24:45,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134686792] [2020-11-30 02:24:45,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-30 02:24:45,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-11-30 02:24:45,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-30 02:24:45,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2020-11-30 02:24:45,167 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 21 states. [2020-11-30 02:24:46,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 02:24:46,220 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-11-30 02:24:46,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-30 02:24:46,224 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 33 [2020-11-30 02:24:46,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 02:24:46,224 INFO L225 Difference]: With dead ends: 64 [2020-11-30 02:24:46,224 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 02:24:46,225 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 165 SyntacticMatches, 8 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=165, Invalid=705, Unknown=0, NotChecked=0, Total=870 [2020-11-30 02:24:46,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 02:24:46,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 02:24:46,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 02:24:46,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 02:24:46,226 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2020-11-30 02:24:46,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 02:24:46,226 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 02:24:46,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-30 02:24:46,226 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 02:24:46,226 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 02:24:46,827 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3,24 cvc4 --incremental --print-success --lang smt --rewrite-divk,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 02:24:46,829 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 02:24:47,027 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification. DAG size of input: 128 DAG size of output: 104 [2020-11-30 02:24:47,169 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 243 DAG size of output: 181 [2020-11-30 02:24:47,658 WARN L193 SmtUtils]: Spent 486.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 31 [2020-11-30 02:24:51,742 WARN L193 SmtUtils]: Spent 4.08 s on a formula simplification. DAG size of input: 175 DAG size of output: 63 [2020-11-30 02:24:51,745 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:24:51,745 INFO L274 CegarLoopResult]: For program point L19(lines 19 22) no Hoare annotation was computed. [2020-11-30 02:24:51,745 INFO L270 CegarLoopResult]: At program point L19-1(line 40) the Hoare annotation is: (let ((.cse11 (bvmul ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~b~0))) (let ((.cse8 (= (_ bv4 32) ULTIMATE.start_main_~b~0)) (.cse4 (bvuge ULTIMATE.start_main_~A~0 (_ bv4 32))) (.cse10 (= (_ bv1 32) ULTIMATE.start_main_~q~0)) (.cse3 (= ULTIMATE.start_main_~b~0 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32)))) (.cse6 (= ULTIMATE.start_main_~A~0 (bvadd .cse11 ULTIMATE.start_main_~r~0))) (.cse1 (= (bvadd ULTIMATE.start___VERIFIER_assert_~cond (_ bv4294967295 32)) (_ bv0 32))) (.cse0 (bvule ULTIMATE.start_main_~A~0 (_ bv5 32))) (.cse2 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse7 (= (_ bv0 32) ULTIMATE.start_main_~q~0)) (.cse5 (= (_ bv1 32) ULTIMATE.start_main_~B~0)) (.cse9 (= (bvadd (bvmul .cse11 (_ bv2 32)) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0))) (or (and (= (bvadd ULTIMATE.start_main_~A~0 (_ bv4294967292 32)) ULTIMATE.start_main_~r~0) .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= (_ bv2 32) ULTIMATE.start_main_~q~0)) (and (not (bvuge ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~b~0)) (bvuge ULTIMATE.start_main_~r~0 (_ bv2 32)) .cse6 .cse1 .cse0 .cse2 .cse7 .cse5 .cse8 .cse9) (and .cse6 .cse1 .cse0 .cse2 .cse5 .cse8 .cse4 .cse10) (and (not (bvuge ULTIMATE.start_main_~r~0 (bvmul ULTIMATE.start_main_~b~0 (_ bv2 32)))) .cse1 .cse2 .cse3 .cse5 (not (bvuge (bvadd (bvmul (bvneg ULTIMATE.start_main_~b~0) (_ bv4294967295 32)) ULTIMATE.start_main_~r~0) (_ bv4 32))) .cse10 (= (bvadd (bvmul (bvmul (bvudiv ULTIMATE.start_main_~b~0 (_ bv2 32)) ULTIMATE.start_main_~q~0) (_ bv2 32)) ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~A~0)) (and .cse6 .cse1 .cse0 .cse2 .cse3 .cse5 .cse9) (and .cse6 .cse1 .cse0 .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~B~0) .cse5) (and .cse6 .cse1 .cse0 .cse2 (= (_ bv8 32) ULTIMATE.start_main_~b~0) .cse7 .cse5 (bvuge ULTIMATE.start_main_~r~0 (_ bv4 32)) .cse9)))) [2020-11-30 02:24:51,745 INFO L274 CegarLoopResult]: For program point L19-2(lines 19 22) no Hoare annotation was computed. [2020-11-30 02:24:51,746 INFO L277 CegarLoopResult]: At program point L19-3(lines 18 24) the Hoare annotation is: true [2020-11-30 02:24:51,746 INFO L274 CegarLoopResult]: For program point L15(lines 15 17) no Hoare annotation was computed. [2020-11-30 02:24:51,746 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 02:24:51,746 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 02:24:51,746 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 02:24:51,746 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-11-30 02:24:51,746 INFO L274 CegarLoopResult]: For program point L20(lines 20 21) no Hoare annotation was computed. [2020-11-30 02:24:51,746 INFO L274 CegarLoopResult]: For program point L20-1(lines 20 21) no Hoare annotation was computed. [2020-11-30 02:24:51,746 INFO L277 CegarLoopResult]: At program point L49(lines 25 50) the Hoare annotation is: true [2020-11-30 02:24:51,746 INFO L274 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-11-30 02:24:51,746 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 02:24:51,746 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-30 02:24:51,746 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-30 02:24:51,746 INFO L274 CegarLoopResult]: For program point L12-6(line 12) no Hoare annotation was computed. [2020-11-30 02:24:51,746 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 02:24:51,746 INFO L274 CegarLoopResult]: For program point L38-1(lines 38 47) no Hoare annotation was computed. [2020-11-30 02:24:51,747 INFO L270 CegarLoopResult]: At program point L34-2(lines 34 37) the Hoare annotation is: (let ((.cse0 (= (_ bv1 32) ULTIMATE.start_assume_abort_if_not_~cond)) (.cse1 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~A~0)) (.cse2 (= (_ bv0 32) ULTIMATE.start_main_~q~0)) (.cse3 (= (_ bv1 32) ULTIMATE.start_main_~B~0)) (.cse4 (bvule ULTIMATE.start_main_~r~0 (_ bv5 32)))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~b~0 (bvmul ULTIMATE.start_main_~B~0 (_ bv2 32))) .cse2 .cse3 .cse4) (and (bvule ULTIMATE.start_main_~A~0 (_ bv5 32)) .cse0 .cse1 (= (_ bv8 32) ULTIMATE.start_main_~b~0) .cse2 .cse3 (bvuge ULTIMATE.start_main_~r~0 (_ bv4 32))) (and (bvuge ULTIMATE.start_main_~r~0 (_ bv2 32)) .cse0 .cse1 .cse2 .cse3 (= (_ bv4 32) ULTIMATE.start_main_~b~0) .cse4) (and .cse0 .cse1 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~B~0) .cse2 .cse3 .cse4))) [2020-11-30 02:24:51,747 INFO L274 CegarLoopResult]: For program point L43(lines 43 46) no Hoare annotation was computed. [2020-11-30 02:24:51,747 INFO L274 CegarLoopResult]: For program point L43-2(lines 25 50) no Hoare annotation was computed. [2020-11-30 02:24:51,747 INFO L274 CegarLoopResult]: For program point L35(line 35) no Hoare annotation was computed. [2020-11-30 02:24:51,765 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:165) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.reportResult(TraceAbstractionStarter.java:707) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:267) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:224) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-11-30 02:24:51,772 INFO L168 Benchmark]: Toolchain (without parser) took 742427.05 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 39.2 MB in the beginning and 30.1 MB in the end (delta: 9.1 MB). Peak memory consumption was 42.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:51,772 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 58.7 MB. Free memory is still 40.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:24:51,773 INFO L168 Benchmark]: CACSL2BoogieTranslator took 281.28 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 29.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:51,773 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.78 ms. Allocated memory is still 58.7 MB. Free memory was 29.1 MB in the beginning and 27.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 02:24:51,773 INFO L168 Benchmark]: Boogie Preprocessor took 45.62 ms. Allocated memory is still 58.7 MB. Free memory was 27.6 MB in the beginning and 26.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:51,774 INFO L168 Benchmark]: RCFGBuilder took 706.14 ms. Allocated memory is still 58.7 MB. Free memory was 26.4 MB in the beginning and 34.3 MB in the end (delta: -7.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:51,775 INFO L168 Benchmark]: TraceAbstraction took 741344.18 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 34.1 MB in the beginning and 30.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. [2020-11-30 02:24:51,777 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 58.7 MB. Free memory is still 40.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 281.28 ms. Allocated memory is still 58.7 MB. Free memory was 39.1 MB in the beginning and 29.1 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.78 ms. Allocated memory is still 58.7 MB. Free memory was 29.1 MB in the beginning and 27.6 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 45.62 ms. Allocated memory is still 58.7 MB. Free memory was 27.6 MB in the beginning and 26.4 MB in the end (delta: 1.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 706.14 ms. Allocated memory is still 58.7 MB. Free memory was 26.4 MB in the beginning and 34.3 MB in the end (delta: -7.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 16.1 GB. * TraceAbstraction took 741344.18 ms. Allocated memory was 58.7 MB in the beginning and 77.6 MB in the end (delta: 18.9 MB). Free memory was 34.1 MB in the beginning and 30.1 MB in the end (delta: 4.0 MB). Peak memory consumption was 36.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 18]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (((((((1bv32 == cond && r == A) && b == ~bvmul32(B, 2bv32)) && 0bv32 == q) && 1bv32 == B) && ~bvule32(r, 5bv32)) || ((((((~bvule32(A, 5bv32) && 1bv32 == cond) && r == A) && 8bv32 == b) && 0bv32 == q) && 1bv32 == B) && ~bvuge32(r, 4bv32))) || ((((((~bvuge32(r, 2bv32) && 1bv32 == cond) && r == A) && 0bv32 == q) && 1bv32 == B) && 4bv32 == b) && ~bvule32(r, 5bv32))) || (((((1bv32 == cond && r == A) && b == B) && 0bv32 == q) && 1bv32 == B) && ~bvule32(r, 5bv32)) - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: 1 - ExceptionOrErrorResult: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: UnsupportedOperationException: translation of (bvneg (_ BitVec 32) (_ BitVec 32)) not yet implemented, please contact Matthias: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:209) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...