./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c -s /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 40bf339a847439ba10959c396a85884137053259 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 23:58:11,094 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 23:58:11,097 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 23:58:11,185 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 23:58:11,185 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 23:58:11,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 23:58:11,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 23:58:11,191 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 23:58:11,194 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 23:58:11,195 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 23:58:11,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 23:58:11,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 23:58:11,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 23:58:11,206 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 23:58:11,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 23:58:11,209 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 23:58:11,210 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 23:58:11,211 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 23:58:11,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 23:58:11,219 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 23:58:11,226 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 23:58:11,228 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 23:58:11,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 23:58:11,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 23:58:11,245 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 23:58:11,246 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 23:58:11,246 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 23:58:11,248 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 23:58:11,249 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 23:58:11,250 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 23:58:11,250 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 23:58:11,252 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 23:58:11,253 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 23:58:11,255 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 23:58:11,256 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 23:58:11,256 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 23:58:11,257 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 23:58:11,257 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 23:58:11,258 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 23:58:11,259 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 23:58:11,259 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 23:58:11,262 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 23:58:11,309 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 23:58:11,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 23:58:11,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 23:58:11,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 23:58:11,311 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 23:58:11,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 23:58:11,312 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 23:58:11,312 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 23:58:11,312 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 23:58:11,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 23:58:11,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 23:58:11,314 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 23:58:11,314 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 23:58:11,314 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 23:58:11,314 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 23:58:11,315 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 23:58:11,315 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 23:58:11,315 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 23:58:11,315 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 23:58:11,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 23:58:11,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 23:58:11,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 23:58:11,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 23:58:11,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 23:58:11,317 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 23:58:11,317 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 23:58:11,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 23:58:11,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 23:58:11,317 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 23:58:11,318 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 40bf339a847439ba10959c396a85884137053259 [2020-11-29 23:58:11,571 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 23:58:11,603 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 23:58:11,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 23:58:11,607 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 23:58:11,607 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 23:58:11,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2020-11-29 23:58:11,685 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/data/d1d59e4cf/4248505551ff4a2082daec02a8e85fb4/FLAGa9b076cbb [2020-11-29 23:58:12,143 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 23:58:12,144 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/sv-benchmarks/c/nla-digbench-scaling/cohendiv-ll_valuebound100.c [2020-11-29 23:58:12,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/data/d1d59e4cf/4248505551ff4a2082daec02a8e85fb4/FLAGa9b076cbb [2020-11-29 23:58:12,509 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/data/d1d59e4cf/4248505551ff4a2082daec02a8e85fb4 [2020-11-29 23:58:12,511 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 23:58:12,513 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 23:58:12,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:12,518 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 23:58:12,521 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 23:58:12,523 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:12" (1/1) ... [2020-11-29 23:58:12,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@215a8ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:12, skipping insertion in model container [2020-11-29 23:58:12,526 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 11:58:12" (1/1) ... [2020-11-29 23:58:12,533 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 23:58:12,551 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 23:58:12,731 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:12,741 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 23:58:12,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 23:58:12,774 INFO L208 MainTranslator]: Completed translation [2020-11-29 23:58:12,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:12 WrapperNode [2020-11-29 23:58:12,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 23:58:12,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:12,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 23:58:12,776 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 23:58:12,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:12" (1/1) ... [2020-11-29 23:58:12,795 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:12" (1/1) ... [2020-11-29 23:58:12,822 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 23:58:12,823 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 23:58:12,823 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 23:58:12,823 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 23:58:12,831 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:12" (1/1) ... [2020-11-29 23:58:12,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:12" (1/1) ... [2020-11-29 23:58:12,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:12" (1/1) ... [2020-11-29 23:58:12,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:12" (1/1) ... [2020-11-29 23:58:12,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:12" (1/1) ... [2020-11-29 23:58:12,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:12" (1/1) ... [2020-11-29 23:58:12,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:12" (1/1) ... [2020-11-29 23:58:12,848 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 23:58:12,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 23:58:12,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 23:58:12,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 23:58:12,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/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 [2020-11-29 23:58:12,924 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 23:58:12,925 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 23:58:12,925 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 23:58:12,926 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 23:58:13,275 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 23:58:13,275 INFO L298 CfgBuilder]: Removed 40 assume(true) statements. [2020-11-29 23:58:13,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:13 BoogieIcfgContainer [2020-11-29 23:58:13,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 23:58:13,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 23:58:13,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 23:58:13,282 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 23:58:13,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 11:58:12" (1/3) ... [2020-11-29 23:58:13,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743595ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:58:13, skipping insertion in model container [2020-11-29 23:58:13,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 11:58:12" (2/3) ... [2020-11-29 23:58:13,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@743595ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 11:58:13, skipping insertion in model container [2020-11-29 23:58:13,284 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:13" (3/3) ... [2020-11-29 23:58:13,285 INFO L111 eAbstractionObserver]: Analyzing ICFG cohendiv-ll_valuebound100.c [2020-11-29 23:58:13,296 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 23:58:13,300 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 23:58:13,313 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 23:58:13,337 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 23:58:13,338 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 23:58:13,338 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 23:58:13,338 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 23:58:13,338 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 23:58:13,338 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 23:58:13,338 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 23:58:13,339 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 23:58:13,354 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-11-29 23:58:13,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:58:13,359 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:13,359 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:13,360 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:13,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:13,366 INFO L82 PathProgramCache]: Analyzing trace with hash 330581779, now seen corresponding path program 1 times [2020-11-29 23:58:13,374 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:13,374 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465516788] [2020-11-29 23:58:13,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:13,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:13,492 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:13,493 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465516788] [2020-11-29 23:58:13,493 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:13,494 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 23:58:13,494 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131019854] [2020-11-29 23:58:13,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 23:58:13,499 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:13,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 23:58:13,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 23:58:13,514 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 2 states. [2020-11-29 23:58:13,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:13,531 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2020-11-29 23:58:13,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 23:58:13,532 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-29 23:58:13,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:13,541 INFO L225 Difference]: With dead ends: 83 [2020-11-29 23:58:13,541 INFO L226 Difference]: Without dead ends: 39 [2020-11-29 23:58:13,544 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 [2020-11-29 23:58:13,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-11-29 23:58:13,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-11-29 23:58:13,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-11-29 23:58:13,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-11-29 23:58:13,578 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 11 [2020-11-29 23:58:13,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:13,578 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-11-29 23:58:13,578 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 23:58:13,578 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-11-29 23:58:13,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-29 23:58:13,579 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:13,579 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:13,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 23:58:13,582 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:13,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:13,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1507472743, now seen corresponding path program 1 times [2020-11-29 23:58:13,587 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:13,587 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509930703] [2020-11-29 23:58:13,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:13,622 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:58:13,622 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1430775448] [2020-11-29 23:58:13,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/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 [2020-11-29 23:58:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:13,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 23:58:13,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:13,765 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:58:13,765 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:58:13,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:13,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509930703] [2020-11-29 23:58:13,822 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:58:13,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1430775448] [2020-11-29 23:58:13,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:13,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:58:13,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763902027] [2020-11-29 23:58:13,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:58:13,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:13,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:58:13,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:58:13,826 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 6 states. [2020-11-29 23:58:14,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:14,119 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-11-29 23:58:14,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:58:14,121 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 11 [2020-11-29 23:58:14,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:14,122 INFO L225 Difference]: With dead ends: 52 [2020-11-29 23:58:14,122 INFO L226 Difference]: Without dead ends: 50 [2020-11-29 23:58:14,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:58:14,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-11-29 23:58:14,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 41. [2020-11-29 23:58:14,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 23:58:14,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-11-29 23:58:14,137 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 11 [2020-11-29 23:58:14,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:14,140 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-11-29 23:58:14,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:58:14,141 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-11-29 23:58:14,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 23:58:14,141 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:14,141 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:14,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2020-11-29 23:58:14,342 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:14,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:14,343 INFO L82 PathProgramCache]: Analyzing trace with hash -1277140292, now seen corresponding path program 1 times [2020-11-29 23:58:14,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:14,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098150029] [2020-11-29 23:58:14,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:14,360 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:58:14,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1946422262] [2020-11-29 23:58:14,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/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 [2020-11-29 23:58:14,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:14,461 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 23:58:14,463 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:14,480 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:58:14,481 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:58:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:14,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098150029] [2020-11-29 23:58:14,530 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:58:14,531 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946422262] [2020-11-29 23:58:14,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:14,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:58:14,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433528683] [2020-11-29 23:58:14,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:58:14,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:14,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:58:14,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:58:14,533 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 6 states. [2020-11-29 23:58:14,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:14,763 INFO L93 Difference]: Finished difference Result 69 states and 71 transitions. [2020-11-29 23:58:14,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:58:14,766 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-11-29 23:58:14,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:14,767 INFO L225 Difference]: With dead ends: 69 [2020-11-29 23:58:14,767 INFO L226 Difference]: Without dead ends: 61 [2020-11-29 23:58:14,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:58:14,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-29 23:58:14,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 53. [2020-11-29 23:58:14,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-29 23:58:14,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 58 transitions. [2020-11-29 23:58:14,780 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 58 transitions. Word has length 13 [2020-11-29 23:58:14,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:14,780 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 58 transitions. [2020-11-29 23:58:14,780 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:58:14,780 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 58 transitions. [2020-11-29 23:58:14,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 23:58:14,781 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:14,781 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:14,981 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:14,982 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:14,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:14,982 INFO L82 PathProgramCache]: Analyzing trace with hash 1834773734, now seen corresponding path program 1 times [2020-11-29 23:58:14,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:14,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396567050] [2020-11-29 23:58:14,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:14,998 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:58:14,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [212711144] [2020-11-29 23:58:14,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/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 [2020-11-29 23:58:15,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:15,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 23:58:15,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:15,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:15,090 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396567050] [2020-11-29 23:58:15,091 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:58:15,091 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [212711144] [2020-11-29 23:58:15,091 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:15,091 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 23:58:15,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064432579] [2020-11-29 23:58:15,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 23:58:15,092 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:15,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 23:58:15,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 23:58:15,092 INFO L87 Difference]: Start difference. First operand 53 states and 58 transitions. Second operand 4 states. [2020-11-29 23:58:15,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:15,213 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-11-29 23:58:15,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 23:58:15,216 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-29 23:58:15,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:15,217 INFO L225 Difference]: With dead ends: 95 [2020-11-29 23:58:15,217 INFO L226 Difference]: Without dead ends: 89 [2020-11-29 23:58:15,218 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:58:15,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-29 23:58:15,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 72. [2020-11-29 23:58:15,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-29 23:58:15,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 82 transitions. [2020-11-29 23:58:15,242 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 82 transitions. Word has length 16 [2020-11-29 23:58:15,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:15,243 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 82 transitions. [2020-11-29 23:58:15,243 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 23:58:15,243 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 82 transitions. [2020-11-29 23:58:15,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 23:58:15,244 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:15,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:15,444 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:15,445 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:15,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:15,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1756992684, now seen corresponding path program 1 times [2020-11-29 23:58:15,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:15,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438586238] [2020-11-29 23:58:15,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:15,455 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:58:15,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2100725575] [2020-11-29 23:58:15,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:15,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:15,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 23:58:15,519 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:15,548 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:58:15,549 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:58:15,571 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:58:15,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:15,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438586238] [2020-11-29 23:58:15,611 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:58:15,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2100725575] [2020-11-29 23:58:15,611 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:15,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 23:58:15,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618124579] [2020-11-29 23:58:15,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:58:15,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:15,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:58:15,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:58:15,613 INFO L87 Difference]: Start difference. First operand 72 states and 82 transitions. Second operand 6 states. [2020-11-29 23:58:15,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:15,798 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-11-29 23:58:15,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 23:58:15,799 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-11-29 23:58:15,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:15,800 INFO L225 Difference]: With dead ends: 72 [2020-11-29 23:58:15,800 INFO L226 Difference]: Without dead ends: 70 [2020-11-29 23:58:15,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-11-29 23:58:15,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-29 23:58:15,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-11-29 23:58:15,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-29 23:58:15,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 77 transitions. [2020-11-29 23:58:15,811 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 77 transitions. Word has length 20 [2020-11-29 23:58:15,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:15,811 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 77 transitions. [2020-11-29 23:58:15,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:58:15,811 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 77 transitions. [2020-11-29 23:58:15,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 23:58:15,812 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:15,812 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:16,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:16,040 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:16,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:16,041 INFO L82 PathProgramCache]: Analyzing trace with hash 746982291, now seen corresponding path program 1 times [2020-11-29 23:58:16,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:16,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244400809] [2020-11-29 23:58:16,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:16,066 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:58:16,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [575027682] [2020-11-29 23:58:16,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:16,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 23:58:16,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:16,145 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:58:16,145 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:58:16,195 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:58:16,197 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:58:16,230 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:16,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244400809] [2020-11-29 23:58:16,230 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:58:16,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575027682] [2020-11-29 23:58:16,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:58:16,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 23:58:16,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962725264] [2020-11-29 23:58:16,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:58:16,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:16,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:58:16,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:58:16,232 INFO L87 Difference]: Start difference. First operand 70 states and 77 transitions. Second operand 7 states. [2020-11-29 23:58:16,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:16,619 INFO L93 Difference]: Finished difference Result 123 states and 133 transitions. [2020-11-29 23:58:16,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 23:58:16,620 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-29 23:58:16,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:16,621 INFO L225 Difference]: With dead ends: 123 [2020-11-29 23:58:16,621 INFO L226 Difference]: Without dead ends: 117 [2020-11-29 23:58:16,622 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-29 23:58:16,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-11-29 23:58:16,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 88. [2020-11-29 23:58:16,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-29 23:58:16,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2020-11-29 23:58:16,644 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 25 [2020-11-29 23:58:16,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:16,644 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2020-11-29 23:58:16,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:58:16,644 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2020-11-29 23:58:16,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 23:58:16,646 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:16,646 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:16,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-11-29 23:58:16,866 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:16,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:16,866 INFO L82 PathProgramCache]: Analyzing trace with hash 23956023, now seen corresponding path program 1 times [2020-11-29 23:58:16,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:16,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803877614] [2020-11-29 23:58:16,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:16,890 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:58:16,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1803574691] [2020-11-29 23:58:16,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/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 [2020-11-29 23:58:16,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:16,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 23:58:16,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:17,027 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:17,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803877614] [2020-11-29 23:58:17,028 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:58:17,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803574691] [2020-11-29 23:58:17,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:58:17,028 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 23:58:17,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005701487] [2020-11-29 23:58:17,029 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:58:17,029 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:17,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:58:17,030 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:58:17,030 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 6 states. [2020-11-29 23:58:17,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:17,257 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2020-11-29 23:58:17,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:58:17,259 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-11-29 23:58:17,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:17,260 INFO L225 Difference]: With dead ends: 140 [2020-11-29 23:58:17,261 INFO L226 Difference]: Without dead ends: 132 [2020-11-29 23:58:17,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:58:17,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-11-29 23:58:17,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 101. [2020-11-29 23:58:17,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-11-29 23:58:17,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 112 transitions. [2020-11-29 23:58:17,294 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 112 transitions. Word has length 26 [2020-11-29 23:58:17,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:17,295 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 112 transitions. [2020-11-29 23:58:17,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:58:17,295 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 112 transitions. [2020-11-29 23:58:17,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-29 23:58:17,297 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:17,297 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:17,524 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:17,524 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:17,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:17,525 INFO L82 PathProgramCache]: Analyzing trace with hash -722493562, now seen corresponding path program 2 times [2020-11-29 23:58:17,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:17,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145062771] [2020-11-29 23:58:17,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:17,541 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:58:17,542 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1251588464] [2020-11-29 23:58:17,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:17,631 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:58:17,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:58:17,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 23:58:17,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:17,659 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:58:17,659 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:58:17,722 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:58:17,725 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:58:17,763 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:17,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145062771] [2020-11-29 23:58:17,764 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:58:17,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1251588464] [2020-11-29 23:58:17,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:58:17,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 23:58:17,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945128368] [2020-11-29 23:58:17,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 23:58:17,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:17,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 23:58:17,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 23:58:17,767 INFO L87 Difference]: Start difference. First operand 101 states and 112 transitions. Second operand 8 states. [2020-11-29 23:58:18,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:18,406 INFO L93 Difference]: Finished difference Result 168 states and 181 transitions. [2020-11-29 23:58:18,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 23:58:18,407 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-11-29 23:58:18,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:18,410 INFO L225 Difference]: With dead ends: 168 [2020-11-29 23:58:18,410 INFO L226 Difference]: Without dead ends: 162 [2020-11-29 23:58:18,411 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-29 23:58:18,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-11-29 23:58:18,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 119. [2020-11-29 23:58:18,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 119 states. [2020-11-29 23:58:18,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 133 transitions. [2020-11-29 23:58:18,434 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 133 transitions. Word has length 34 [2020-11-29 23:58:18,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:18,434 INFO L481 AbstractCegarLoop]: Abstraction has 119 states and 133 transitions. [2020-11-29 23:58:18,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 23:58:18,434 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 133 transitions. [2020-11-29 23:58:18,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 23:58:18,435 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:18,436 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:18,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:18,656 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:18,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:18,657 INFO L82 PathProgramCache]: Analyzing trace with hash 1714844836, now seen corresponding path program 1 times [2020-11-29 23:58:18,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:18,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1330631301] [2020-11-29 23:58:18,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:18,684 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:58:18,684 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639780750] [2020-11-29 23:58:18,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:58:18,750 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 23:58:18,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:18,887 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:18,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1330631301] [2020-11-29 23:58:18,888 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:58:18,888 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639780750] [2020-11-29 23:58:18,888 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:58:18,888 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 23:58:18,889 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905030689] [2020-11-29 23:58:18,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 23:58:18,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:18,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 23:58:18,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:58:18,895 INFO L87 Difference]: Start difference. First operand 119 states and 133 transitions. Second operand 9 states. [2020-11-29 23:58:19,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:19,318 INFO L93 Difference]: Finished difference Result 210 states and 234 transitions. [2020-11-29 23:58:19,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 23:58:19,319 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-11-29 23:58:19,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:19,320 INFO L225 Difference]: With dead ends: 210 [2020-11-29 23:58:19,320 INFO L226 Difference]: Without dead ends: 202 [2020-11-29 23:58:19,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-11-29 23:58:19,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-11-29 23:58:19,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 128. [2020-11-29 23:58:19,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-11-29 23:58:19,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 143 transitions. [2020-11-29 23:58:19,354 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 143 transitions. Word has length 35 [2020-11-29 23:58:19,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:19,355 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 143 transitions. [2020-11-29 23:58:19,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 23:58:19,355 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 143 transitions. [2020-11-29 23:58:19,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 23:58:19,357 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:19,358 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:19,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2020-11-29 23:58:19,582 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:19,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:19,582 INFO L82 PathProgramCache]: Analyzing trace with hash 810001052, now seen corresponding path program 2 times [2020-11-29 23:58:19,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:19,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676453386] [2020-11-29 23:58:19,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:19,593 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:58:19,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1288568220] [2020-11-29 23:58:19,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/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 [2020-11-29 23:58:19,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:58:19,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:58:19,665 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 23:58:19,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:19,716 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:58:19,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676453386] [2020-11-29 23:58:19,716 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:58:19,716 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288568220] [2020-11-29 23:58:19,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:58:19,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 23:58:19,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870819754] [2020-11-29 23:58:19,717 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 23:58:19,717 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:19,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 23:58:19,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 23:58:19,718 INFO L87 Difference]: Start difference. First operand 128 states and 143 transitions. Second operand 5 states. [2020-11-29 23:58:19,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:58:19,827 INFO L93 Difference]: Finished difference Result 241 states and 268 transitions. [2020-11-29 23:58:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 23:58:19,829 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-11-29 23:58:19,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:58:19,830 INFO L225 Difference]: With dead ends: 241 [2020-11-29 23:58:19,830 INFO L226 Difference]: Without dead ends: 142 [2020-11-29 23:58:19,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 23:58:19,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-11-29 23:58:19,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 134. [2020-11-29 23:58:19,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-11-29 23:58:19,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 149 transitions. [2020-11-29 23:58:19,853 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 149 transitions. Word has length 39 [2020-11-29 23:58:19,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:58:19,855 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 149 transitions. [2020-11-29 23:58:19,855 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 23:58:19,855 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 149 transitions. [2020-11-29 23:58:19,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-29 23:58:19,863 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:58:19,863 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:58:20,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:20,088 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:58:20,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:58:20,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1605251853, now seen corresponding path program 3 times [2020-11-29 23:58:20,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:58:20,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563451946] [2020-11-29 23:58:20,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:58:20,098 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:58:20,098 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1970406013] [2020-11-29 23:58:20,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:58:20,215 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 23:58:20,215 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:58:20,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 23:58:20,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:58:20,302 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:58:20,302 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:58:22,353 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 13 [2020-11-29 23:58:26,691 WARN L193 SmtUtils]: Spent 2.03 s on a formula simplification that was a NOOP. DAG size: 19 [2020-11-29 23:58:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 21 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-11-29 23:58:26,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563451946] [2020-11-29 23:58:26,779 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:58:26,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970406013] [2020-11-29 23:58:26,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:58:26,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 23:58:26,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431843144] [2020-11-29 23:58:26,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 23:58:26,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:58:26,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 23:58:26,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=17, Unknown=1, NotChecked=0, Total=30 [2020-11-29 23:58:26,783 INFO L87 Difference]: Start difference. First operand 134 states and 149 transitions. Second operand 6 states. [2020-11-29 23:58:43,764 WARN L193 SmtUtils]: Spent 14.33 s on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2020-11-29 23:59:00,615 WARN L193 SmtUtils]: Spent 16.78 s on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-11-29 23:59:05,631 WARN L193 SmtUtils]: Spent 4.56 s on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2020-11-29 23:59:18,611 WARN L838 $PredicateComparison]: unable to prove that (let ((.cse1 (div (* c_ULTIMATE.start_main_~a~0 (- 1)) (- 2)))) (let ((.cse0 (* .cse1 c_ULTIMATE.start_main_~y~0))) (and (= (mod .cse0 2) 0) (= (mod .cse1 (- 2)) 0) (let ((.cse2 (= c_ULTIMATE.start_main_~b~0 (* c_ULTIMATE.start_main_~a~0 c_ULTIMATE.start_main_~y~0)))) (or (and (= 0 c_ULTIMATE.start___VERIFIER_assert_~cond) (not .cse2)) (and (= 1 c_ULTIMATE.start___VERIFIER_assert_~cond) .cse2))) (= (mod c_ULTIMATE.start_main_~a~0 (- 2)) 0) (= (mod c_ULTIMATE.start_main_~b~0 2) 0) (= c_ULTIMATE.start_main_~b~0 (* 2 .cse0))))) is different from false [2020-11-29 23:59:20,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:20,895 INFO L93 Difference]: Finished difference Result 142 states and 154 transitions. [2020-11-29 23:59:20,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 23:59:20,900 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2020-11-29 23:59:20,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:20,901 INFO L225 Difference]: With dead ends: 142 [2020-11-29 23:59:20,901 INFO L226 Difference]: Without dead ends: 136 [2020-11-29 23:59:20,902 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 47.0s TimeCoverageRelationStatistics Valid=32, Invalid=41, Unknown=3, NotChecked=14, Total=90 [2020-11-29 23:59:20,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2020-11-29 23:59:20,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 87. [2020-11-29 23:59:20,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-29 23:59:20,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 94 transitions. [2020-11-29 23:59:20,918 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 94 transitions. Word has length 43 [2020-11-29 23:59:20,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:20,919 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 94 transitions. [2020-11-29 23:59:20,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 23:59:20,919 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 94 transitions. [2020-11-29 23:59:20,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-11-29 23:59:20,920 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:20,920 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:21,134 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:59:21,134 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:21,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:21,134 INFO L82 PathProgramCache]: Analyzing trace with hash 119141591, now seen corresponding path program 2 times [2020-11-29 23:59:21,135 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:21,135 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102912657] [2020-11-29 23:59:21,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:21,153 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:59:21,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [417461803] [2020-11-29 23:59:21,156 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:59:21,245 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 23:59:21,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:59:21,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 37 conjunts are in the unsatisfiable core [2020-11-29 23:59:21,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:21,281 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 2, 1] term [2020-11-29 23:59:21,281 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:59:21,738 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 20 [2020-11-29 23:59:22,260 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 20 [2020-11-29 23:59:22,451 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:22,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102912657] [2020-11-29 23:59:22,452 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:59:22,452 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [417461803] [2020-11-29 23:59:22,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:59:22,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-11-29 23:59:22,453 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178788631] [2020-11-29 23:59:22,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 23:59:22,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:59:22,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 23:59:22,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-11-29 23:59:22,454 INFO L87 Difference]: Start difference. First operand 87 states and 94 transitions. Second operand 13 states. [2020-11-29 23:59:24,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:24,429 INFO L93 Difference]: Finished difference Result 143 states and 155 transitions. [2020-11-29 23:59:24,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 23:59:24,430 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-11-29 23:59:24,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:24,431 INFO L225 Difference]: With dead ends: 143 [2020-11-29 23:59:24,431 INFO L226 Difference]: Without dead ends: 135 [2020-11-29 23:59:24,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=109, Invalid=353, Unknown=0, NotChecked=0, Total=462 [2020-11-29 23:59:24,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-11-29 23:59:24,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 96. [2020-11-29 23:59:24,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-29 23:59:24,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 104 transitions. [2020-11-29 23:59:24,454 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 104 transitions. Word has length 44 [2020-11-29 23:59:24,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:24,456 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 104 transitions. [2020-11-29 23:59:24,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 23:59:24,456 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 104 transitions. [2020-11-29 23:59:24,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-29 23:59:24,459 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:24,460 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:24,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-29 23:59:24,672 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:24,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:24,673 INFO L82 PathProgramCache]: Analyzing trace with hash -1237724849, now seen corresponding path program 3 times [2020-11-29 23:59:24,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:24,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123824129] [2020-11-29 23:59:24,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:24,709 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:59:24,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1253886035] [2020-11-29 23:59:24,710 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/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 [2020-11-29 23:59:24,784 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 23:59:24,785 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:59:24,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 23:59:24,788 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:24,849 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:59:24,850 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:59:24,923 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-11-29 23:59:24,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123824129] [2020-11-29 23:59:24,923 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:59:24,923 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1253886035] [2020-11-29 23:59:24,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 23:59:24,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-29 23:59:24,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504750592] [2020-11-29 23:59:24,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:59:24,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:59:24,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:59:24,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:59:24,925 INFO L87 Difference]: Start difference. First operand 96 states and 104 transitions. Second operand 7 states. [2020-11-29 23:59:27,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:27,392 INFO L93 Difference]: Finished difference Result 110 states and 115 transitions. [2020-11-29 23:59:27,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 23:59:27,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 48 [2020-11-29 23:59:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:27,394 INFO L225 Difference]: With dead ends: 110 [2020-11-29 23:59:27,394 INFO L226 Difference]: Without dead ends: 96 [2020-11-29 23:59:27,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-11-29 23:59:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-29 23:59:27,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 78. [2020-11-29 23:59:27,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-11-29 23:59:27,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 81 transitions. [2020-11-29 23:59:27,409 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 81 transitions. Word has length 48 [2020-11-29 23:59:27,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:27,410 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 81 transitions. [2020-11-29 23:59:27,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:59:27,410 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 81 transitions. [2020-11-29 23:59:27,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-29 23:59:27,410 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:27,411 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:27,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-29 23:59:27,636 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:27,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:27,637 INFO L82 PathProgramCache]: Analyzing trace with hash 415759876, now seen corresponding path program 4 times [2020-11-29 23:59:27,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:27,637 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638980240] [2020-11-29 23:59:27,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:27,646 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:59:27,646 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [565363222] [2020-11-29 23:59:27,646 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:59:27,709 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 23:59:27,709 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:59:27,711 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-29 23:59:27,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:28,489 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:28,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638980240] [2020-11-29 23:59:28,489 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:59:28,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [565363222] [2020-11-29 23:59:28,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:59:28,490 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 23:59:28,490 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116545032] [2020-11-29 23:59:28,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 23:59:28,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:59:28,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 23:59:28,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-11-29 23:59:28,491 INFO L87 Difference]: Start difference. First operand 78 states and 81 transitions. Second operand 11 states. [2020-11-29 23:59:30,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:30,292 INFO L93 Difference]: Finished difference Result 133 states and 139 transitions. [2020-11-29 23:59:30,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 23:59:30,293 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-11-29 23:59:30,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:30,294 INFO L225 Difference]: With dead ends: 133 [2020-11-29 23:59:30,294 INFO L226 Difference]: Without dead ends: 125 [2020-11-29 23:59:30,295 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-11-29 23:59:30,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-29 23:59:30,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 87. [2020-11-29 23:59:30,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-29 23:59:30,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-11-29 23:59:30,313 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 53 [2020-11-29 23:59:30,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:30,314 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-11-29 23:59:30,314 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 23:59:30,314 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-11-29 23:59:30,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-11-29 23:59:30,315 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:30,315 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:30,528 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-29 23:59:30,528 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:30,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:30,529 INFO L82 PathProgramCache]: Analyzing trace with hash -1674794868, now seen corresponding path program 5 times [2020-11-29 23:59:30,529 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:30,529 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511550368] [2020-11-29 23:59:30,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:30,549 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:59:30,550 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [781057436] [2020-11-29 23:59:30,550 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:59:30,611 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-29 23:59:30,611 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:59:30,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 23:59:30,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:30,912 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 37 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:30,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511550368] [2020-11-29 23:59:30,912 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:59:30,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [781057436] [2020-11-29 23:59:30,912 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:59:30,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 23:59:30,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708556360] [2020-11-29 23:59:30,913 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:59:30,913 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:59:30,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:59:30,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:59:30,914 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 7 states. [2020-11-29 23:59:32,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:32,374 INFO L93 Difference]: Finished difference Result 159 states and 165 transitions. [2020-11-29 23:59:32,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 23:59:32,382 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 57 [2020-11-29 23:59:32,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:32,383 INFO L225 Difference]: With dead ends: 159 [2020-11-29 23:59:32,383 INFO L226 Difference]: Without dead ends: 116 [2020-11-29 23:59:32,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-11-29 23:59:32,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-11-29 23:59:32,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 106. [2020-11-29 23:59:32,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-11-29 23:59:32,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 112 transitions. [2020-11-29 23:59:32,408 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 112 transitions. Word has length 57 [2020-11-29 23:59:32,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:32,408 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 112 transitions. [2020-11-29 23:59:32,408 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:59:32,408 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 112 transitions. [2020-11-29 23:59:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-29 23:59:32,409 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:32,409 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:32,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:59:32,616 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:32,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:32,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1866664073, now seen corresponding path program 6 times [2020-11-29 23:59:32,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:32,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613297249] [2020-11-29 23:59:32,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:32,625 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:59:32,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [311079138] [2020-11-29 23:59:32,626 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/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 [2020-11-29 23:59:32,705 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2020-11-29 23:59:32,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 23:59:32,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-29 23:59:32,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:32,755 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:59:32,755 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:59:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-11-29 23:59:32,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613297249] [2020-11-29 23:59:32,831 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:59:32,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311079138] [2020-11-29 23:59:32,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:59:32,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 23:59:32,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096712852] [2020-11-29 23:59:32,832 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 23:59:32,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:59:32,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 23:59:32,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-29 23:59:32,833 INFO L87 Difference]: Start difference. First operand 106 states and 112 transitions. Second operand 7 states. [2020-11-29 23:59:33,101 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 16 [2020-11-29 23:59:33,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 23:59:33,247 INFO L93 Difference]: Finished difference Result 125 states and 133 transitions. [2020-11-29 23:59:33,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 23:59:33,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 62 [2020-11-29 23:59:33,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 23:59:33,249 INFO L225 Difference]: With dead ends: 125 [2020-11-29 23:59:33,249 INFO L226 Difference]: Without dead ends: 110 [2020-11-29 23:59:33,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-29 23:59:33,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-11-29 23:59:33,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 81. [2020-11-29 23:59:33,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-29 23:59:33,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 84 transitions. [2020-11-29 23:59:33,267 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 84 transitions. Word has length 62 [2020-11-29 23:59:33,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 23:59:33,268 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 84 transitions. [2020-11-29 23:59:33,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 23:59:33,268 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 84 transitions. [2020-11-29 23:59:33,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-29 23:59:33,269 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 23:59:33,269 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 23:59:33,476 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 23:59:33,476 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-29 23:59:33,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 23:59:33,477 INFO L82 PathProgramCache]: Analyzing trace with hash -1252937601, now seen corresponding path program 7 times [2020-11-29 23:59:33,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 23:59:33,477 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609479794] [2020-11-29 23:59:33,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 23:59:33,484 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 23:59:33,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791755335] [2020-11-29 23:59:33,484 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 23:59:33,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 23:59:33,552 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 47 conjunts are in the unsatisfiable core [2020-11-29 23:59:33,554 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 23:59:35,058 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification that was a NOOP. DAG size: 35 [2020-11-29 23:59:35,060 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:59:35,060 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:59:35,519 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 28 [2020-11-29 23:59:35,816 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 32 [2020-11-29 23:59:36,242 WARN L193 SmtUtils]: Spent 274.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 22 [2020-11-29 23:59:36,801 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-11-29 23:59:38,131 WARN L193 SmtUtils]: Spent 226.00 ms on a formula simplification that was a NOOP. DAG size: 33 [2020-11-29 23:59:43,265 WARN L193 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 47 DAG size of output: 42 [2020-11-29 23:59:43,267 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 23:59:43,267 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 23:59:45,112 WARN L193 SmtUtils]: Spent 860.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-11-29 23:59:45,211 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 23:59:45,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609479794] [2020-11-29 23:59:45,212 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 23:59:45,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791755335] [2020-11-29 23:59:45,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 23:59:45,212 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-11-29 23:59:45,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894887300] [2020-11-29 23:59:45,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 23:59:45,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 23:59:45,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 23:59:45,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2020-11-29 23:59:45,214 INFO L87 Difference]: Start difference. First operand 81 states and 84 transitions. Second operand 16 states. [2020-11-29 23:59:54,669 WARN L193 SmtUtils]: Spent 2.85 s on a formula simplification. DAG size of input: 51 DAG size of output: 37 [2020-11-29 23:59:55,246 WARN L193 SmtUtils]: Spent 341.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 32 [2020-11-29 23:59:55,866 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-11-29 23:59:57,023 WARN L193 SmtUtils]: Spent 668.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 24 [2020-11-29 23:59:58,622 WARN L193 SmtUtils]: Spent 653.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-11-30 00:00:23,100 WARN L193 SmtUtils]: Spent 15.54 s on a formula simplification. DAG size of input: 60 DAG size of output: 56 [2020-11-30 00:00:26,242 WARN L193 SmtUtils]: Spent 2.46 s on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-11-30 00:00:26,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:00:26,995 INFO L93 Difference]: Finished difference Result 156 states and 164 transitions. [2020-11-30 00:00:27,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-30 00:00:27,009 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 66 [2020-11-30 00:00:27,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:00:27,009 INFO L225 Difference]: With dead ends: 156 [2020-11-30 00:00:27,009 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:00:27,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 37.2s TimeCoverageRelationStatistics Valid=75, Invalid=431, Unknown=0, NotChecked=0, Total=506 [2020-11-30 00:00:27,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:00:27,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:00:27,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:00:27,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:00:27,011 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2020-11-30 00:00:27,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:00:27,011 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:00:27,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-30 00:00:27,011 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:00:27,011 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:00:27,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-30 00:00:27,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:00:27,461 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 156 DAG size of output: 143 [2020-11-30 00:00:27,600 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 140 [2020-11-30 00:00:27,912 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 182 DAG size of output: 157 [2020-11-30 00:00:28,043 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 153 DAG size of output: 140 [2020-11-30 00:00:28,368 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 155 DAG size of output: 135 [2020-11-30 00:00:43,941 WARN L193 SmtUtils]: Spent 15.51 s on a formula simplification. DAG size of input: 139 DAG size of output: 33 [2020-11-30 00:00:55,853 WARN L193 SmtUtils]: Spent 11.91 s on a formula simplification. DAG size of input: 134 DAG size of output: 33 [2020-11-30 00:01:31,845 WARN L193 SmtUtils]: Spent 35.99 s on a formula simplification. DAG size of input: 107 DAG size of output: 78 [2020-11-30 00:01:57,946 WARN L193 SmtUtils]: Spent 26.10 s on a formula simplification. DAG size of input: 150 DAG size of output: 74 [2020-11-30 00:02:13,743 WARN L193 SmtUtils]: Spent 15.79 s on a formula simplification. DAG size of input: 138 DAG size of output: 34 [2020-11-30 00:02:28,720 WARN L193 SmtUtils]: Spent 14.98 s on a formula simplification. DAG size of input: 108 DAG size of output: 48 [2020-11-30 00:02:37,854 WARN L193 SmtUtils]: Spent 9.13 s on a formula simplification. DAG size of input: 129 DAG size of output: 35 [2020-11-30 00:02:55,067 WARN L193 SmtUtils]: Spent 17.21 s on a formula simplification. DAG size of input: 128 DAG size of output: 65 [2020-11-30 00:02:55,070 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:02:55,070 INFO L274 CegarLoopResult]: For program point L11(lines 11 13) no Hoare annotation was computed. [2020-11-30 00:02:55,070 INFO L274 CegarLoopResult]: For program point L11-1(lines 11 13) no Hoare annotation was computed. [2020-11-30 00:02:55,070 INFO L274 CegarLoopResult]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2020-11-30 00:02:55,070 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:02:55,070 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:02:55,071 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:02:55,071 INFO L274 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-11-30 00:02:55,071 INFO L274 CegarLoopResult]: For program point L12-2(line 12) no Hoare annotation was computed. [2020-11-30 00:02:55,071 INFO L274 CegarLoopResult]: For program point L12-4(line 12) no Hoare annotation was computed. [2020-11-30 00:02:55,071 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:02:55,071 INFO L270 CegarLoopResult]: At program point L38-2(lines 38 62) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse4 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse8 (* ULTIMATE.start_main_~y~0 2))) (let ((.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (or (and .cse0 (= ULTIMATE.start_main_~a~0 1) .cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 (= ULTIMATE.start_main_~a~0 2) .cse4 (= ULTIMATE.start_main_~b~0 .cse8))))) (let ((.cse1 (<= 0 ULTIMATE.start_main_~x~0)) (.cse3 (<= ULTIMATE.start_main_~x~0 100)) (.cse6 (or (and .cse0 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 4)) .cse4 (= ULTIMATE.start_main_~a~0 4) .cse2) (and .cse2 .cse7))) (.cse5 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0))) (or (and .cse0 (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~q~0) .cse1 (= ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~x~0) (= ULTIMATE.start_main_~q~0 0) .cse2 .cse3 (= ULTIMATE.start_main_~b~0 0)) (and .cse0 .cse1 .cse4 .cse2 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (= (mod ULTIMATE.start_main_~b~0 2) 0) .cse3) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) .cse5 .cse1 .cse6 .cse3) (and (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (or (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse2 .cse7) (and (= ULTIMATE.start_main_~q~0 2) .cse6 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse8)) (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0))) .cse5))))) [2020-11-30 00:02:55,071 INFO L274 CegarLoopResult]: For program point L38-3(lines 38 62) no Hoare annotation was computed. [2020-11-30 00:02:55,071 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:02:55,072 INFO L270 CegarLoopResult]: At program point L47-2(lines 47 59) the Hoare annotation is: (let ((.cse1 (= ULTIMATE.start_main_~a~0 1)) (.cse4 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse7 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse2 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (* ULTIMATE.start_main_~y~0 2)) (.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse8 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse9 (<= 0 ULTIMATE.start_main_~x~0)) (.cse5 (<= ULTIMATE.start_main_~x~0 100))) (or (and (< ULTIMATE.start_main_~r~0 (* 2 ULTIMATE.start_main_~b~0)) (or (and .cse0 (= ULTIMATE.start_main_~q~0 8) .cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 8))) .cse2 .cse3 .cse4 .cse5) (and (or (and .cse0 .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 4))) .cse5 (= ULTIMATE.start_main_~q~0 4)) (and (or (and .cse0 (= ULTIMATE.start_main_~q~0 2) .cse1 .cse2 .cse3 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 .cse6))) (and (= ULTIMATE.start_main_~q~0 1) .cse0 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse1 .cse2 .cse3)) .cse5)) .cse4))) (and .cse0 .cse7 .cse8 .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse9 .cse3 .cse5 .cse4) (and .cse7 (or (and .cse0 .cse8 (= ULTIMATE.start_main_~a~0 2) .cse2 (= ULTIMATE.start_main_~b~0 .cse6) .cse3) (let ((.cse11 (div (* ULTIMATE.start_main_~a~0 (- 1)) (- 2)))) (let ((.cse10 (* .cse11 ULTIMATE.start_main_~y~0))) (and (= (mod .cse10 2) 0) .cse0 .cse8 (= ULTIMATE.start_main_~b~0 (* .cse10 2)) (= (mod .cse11 (- 2)) 0) .cse3 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0))))) .cse9 .cse5))) [2020-11-30 00:02:55,072 INFO L274 CegarLoopResult]: For program point L47-3(lines 47 59) no Hoare annotation was computed. [2020-11-30 00:02:55,072 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:02:55,072 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:02:55,072 INFO L270 CegarLoopResult]: At program point L15-1(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~y~0)) (.cse1 (= ULTIMATE.start_main_~a~0 1)) (.cse5 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse6 (<= 0 ULTIMATE.start_main_~x~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse7 (<= ULTIMATE.start_main_~x~0 100)) (.cse3 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0))) (or (and (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) (or (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse0 .cse1 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 .cse3) (and (= ULTIMATE.start_main_~q~0 2) .cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 2))) (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0))) .cse4) (and .cse0 .cse5 .cse6 .cse2 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) .cse7 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (= (mod ULTIMATE.start_main_~b~0 2) 0)) (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) .cse0 .cse1 .cse5 .cse4 .cse6 .cse2 .cse7 .cse3))) [2020-11-30 00:02:55,072 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:02:55,073 INFO L270 CegarLoopResult]: At program point L15-3(lines 42 43) the Hoare annotation is: (let ((.cse3 (<= 1 ULTIMATE.start_main_~y~0)) (.cse11 (= ULTIMATE.start_main_~a~0 1)) (.cse12 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (.cse13 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse6 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (let ((.cse2 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse4 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (< ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) (.cse5 (<= 0 ULTIMATE.start_main_~x~0)) (.cse0 (or (and (= ULTIMATE.start_main_~q~0 1) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 ULTIMATE.start_main_~y~0)) .cse3 .cse11 .cse13 .cse6 .cse12) (and (= ULTIMATE.start_main_~q~0 2) (< (* 2 ULTIMATE.start_main_~r~0) ULTIMATE.start_main_~x~0) .cse13 .cse6 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 2))) (<= (* 2 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0)))) (.cse7 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0)) (.cse8 (<= ULTIMATE.start_main_~x~0 100)) (.cse9 (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0))) (.cse10 (= (mod ULTIMATE.start_main_~b~0 2) 0))) (or (and (<= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0) .cse0 .cse1) (and .cse2 .cse3 .cse4 .cse5 .cse6 .cse7 .cse8 .cse9 .cse10) (and .cse2 .cse3 .cse11 .cse4 .cse1 .cse5 .cse6 .cse8 .cse12) (and (<= (+ (div (+ ULTIMATE.start_main_~b~0 (- 1)) 2) 1) ULTIMATE.start_main_~y~0) (< (+ (div (+ ULTIMATE.start_main_~r~0 (- 2)) 2) 1) ULTIMATE.start_main_~y~0) (or (and .cse13 (<= (* 4 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse6 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 4))) .cse7 .cse8 .cse9 .cse10 (= ULTIMATE.start_main_~q~0 4)) (and (= ULTIMATE.start_main_~q~0 8) (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~y~0 8))) .cse13 (<= (* 8 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) .cse6 .cse7 .cse8 .cse9) (and .cse0 .cse7 .cse8 .cse9 .cse10)))))) [2020-11-30 00:02:55,073 INFO L274 CegarLoopResult]: For program point L15-4(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:02:55,073 INFO L270 CegarLoopResult]: At program point L15-5(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= 0 ULTIMATE.start_main_~x~0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse5 (<= ULTIMATE.start_main_~x~0 100))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3 .cse4 .cse5 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (= (mod ULTIMATE.start_main_~b~0 2) 0) .cse5))) [2020-11-30 00:02:55,073 INFO L274 CegarLoopResult]: For program point L15-6(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:02:55,073 INFO L270 CegarLoopResult]: At program point L15-7(lines 14 20) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (<= 0 ULTIMATE.start_main_~x~0)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (<= ULTIMATE.start_main_~x~0 100))) (or (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (= (mod ULTIMATE.start_main_~b~0 2) 0) .cse6) (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~a~0 1) .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)))) [2020-11-30 00:02:55,074 INFO L274 CegarLoopResult]: For program point L15-8(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:02:55,074 INFO L270 CegarLoopResult]: At program point L15-9(lines 52 53) the Hoare annotation is: (let ((.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0)))) (.cse2 (<= 1 ULTIMATE.start_main_~y~0)) (.cse3 (<= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse4 (<= 0 ULTIMATE.start_main_~x~0)) (.cse5 (= ULTIMATE.start_assume_abort_if_not_~cond 1)) (.cse6 (<= ULTIMATE.start_main_~x~0 100))) (or (and .cse0 .cse1 .cse2 (= ULTIMATE.start_main_~a~0 1) .cse3 .cse4 .cse5 .cse6 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 .cse2 .cse3 .cse4 .cse5 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (= (mod ULTIMATE.start_main_~b~0 2) 0) .cse6))) [2020-11-30 00:02:55,074 INFO L274 CegarLoopResult]: For program point L15-10(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:02:55,074 INFO L270 CegarLoopResult]: At program point L15-11(lines 14 20) the Hoare annotation is: (and (= ULTIMATE.start_main_~x~0 (+ ULTIMATE.start_main_~r~0 (* ULTIMATE.start_main_~q~0 ULTIMATE.start_main_~y~0))) (let ((.cse0 (<= 1 ULTIMATE.start_main_~r~0)) (.cse1 (<= 1 ULTIMATE.start_main_~y~0)) (.cse2 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and .cse0 .cse1 (= ULTIMATE.start_main_~a~0 1) (<= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~y~0)) (and .cse0 .cse1 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse2 (= (mod ULTIMATE.start_main_~a~0 (- 2)) 0) (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~y~0)) (= (mod ULTIMATE.start_main_~b~0 2) 0)))) (<= 0 ULTIMATE.start_main_~x~0) (<= ULTIMATE.start_main_~x~0 100)) [2020-11-30 00:02:55,074 INFO L274 CegarLoopResult]: For program point L15-12(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:02:55,074 INFO L277 CegarLoopResult]: At program point L15-13(lines 14 20) the Hoare annotation is: true [2020-11-30 00:02:55,074 INFO L277 CegarLoopResult]: At program point L65(lines 22 66) the Hoare annotation is: true [2020-11-30 00:02:55,074 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:02:55,075 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:02:55,075 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:02:55,075 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:02:55,075 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:02:55,075 INFO L274 CegarLoopResult]: For program point L16-3(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:02:55,075 INFO L274 CegarLoopResult]: For program point L16-4(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:02:55,075 INFO L274 CegarLoopResult]: For program point L16-5(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:02:55,075 INFO L274 CegarLoopResult]: For program point L16-6(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:02:55,075 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:02:55,075 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:02:55,127 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:02:55 BoogieIcfgContainer [2020-11-30 00:02:55,128 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:02:55,137 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:02:55,137 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:02:55,137 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:02:55,138 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 11:58:13" (3/4) ... [2020-11-30 00:02:55,140 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:02:55,150 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2020-11-30 00:02:55,151 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:02:55,151 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:02:55,151 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:02:55,201 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_593c37c8-8e77-49ee-a675-43d6e590fb49/bin/uautomizer/witness.graphml [2020-11-30 00:02:55,201 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:02:55,202 INFO L168 Benchmark]: Toolchain (without parser) took 282688.73 ms. Allocated memory was 96.5 MB in the beginning and 155.2 MB in the end (delta: 58.7 MB). Free memory was 66.7 MB in the beginning and 58.0 MB in the end (delta: 8.7 MB). Peak memory consumption was 68.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:55,203 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory was 54.0 MB in the beginning and 53.9 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:02:55,203 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.42 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 66.7 MB in the beginning and 105.1 MB in the end (delta: -38.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:55,204 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.80 ms. Allocated memory is still 127.9 MB. Free memory was 105.1 MB in the beginning and 103.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:55,204 INFO L168 Benchmark]: Boogie Preprocessor took 25.51 ms. Allocated memory is still 127.9 MB. Free memory was 103.0 MB in the beginning and 102.2 MB in the end (delta: 875.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:55,204 INFO L168 Benchmark]: RCFGBuilder took 427.43 ms. Allocated memory is still 127.9 MB. Free memory was 102.2 MB in the beginning and 85.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:55,205 INFO L168 Benchmark]: TraceAbstraction took 281849.44 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 84.8 MB in the beginning and 62.2 MB in the end (delta: 22.6 MB). Peak memory consumption was 75.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:55,205 INFO L168 Benchmark]: Witness Printer took 64.46 ms. Allocated memory is still 155.2 MB. Free memory was 62.2 MB in the beginning and 58.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-30 00:02:55,208 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 96.5 MB. Free memory was 54.0 MB in the beginning and 53.9 MB in the end (delta: 39.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.42 ms. Allocated memory was 96.5 MB in the beginning and 127.9 MB in the end (delta: 31.5 MB). Free memory was 66.7 MB in the beginning and 105.1 MB in the end (delta: -38.3 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.80 ms. Allocated memory is still 127.9 MB. Free memory was 105.1 MB in the beginning and 103.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.51 ms. Allocated memory is still 127.9 MB. Free memory was 103.0 MB in the beginning and 102.2 MB in the end (delta: 875.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 427.43 ms. Allocated memory is still 127.9 MB. Free memory was 102.2 MB in the beginning and 85.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 281849.44 ms. Allocated memory was 127.9 MB in the beginning and 155.2 MB in the end (delta: 27.3 MB). Free memory was 84.8 MB in the beginning and 62.2 MB in the end (delta: 22.6 MB). Peak memory consumption was 75.3 MB. Max. memory is 16.1 GB. * Witness Printer took 64.46 ms. Allocated memory is still 155.2 MB. Free memory was 62.2 MB in the beginning and 58.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 7 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((((((((1 <= r && x == r + q * y) && 1 <= y) && a == 1) && 1 <= cond) && 0 <= x) && cond == 1) && x <= 100) && b == y) || ((((((((1 <= r && x == r + q * y) && 1 <= y) && 0 <= x) && cond == 1) && a % -2 == 0) && b == a * y) && b % 2 == 0) && x <= 100) - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: ((((((((1 <= r && x == r + q * y) && 1 <= y) && a == 1) && 1 <= cond) && 0 <= x) && cond == 1) && x <= 100) && b == y) || (((((((((1 <= r && x == r + q * y) && 1 <= y) && 1 <= cond) && 0 <= x) && cond == 1) && a % -2 == 0) && b == a * y) && b % 2 == 0) && x <= 100) - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 42]: Loop Invariant Derived loop invariant: ((((b <= y && (((((((q == 1 && x == r + y) && 1 <= y) && a == 1) && 1 <= cond) && cond == 1) && b == y) || (((((q == 2 && 2 * r < x) && 1 <= cond) && cond == 1) && x == r + y * 2) && 2 * y <= x))) && r < y) || ((((((((x == r + q * y && 1 <= y) && 1 == cond) && 0 <= x) && cond == 1) && a % -2 == 0) && x <= 100) && b == a * y) && b % 2 == 0)) || ((((((((x == r + q * y && 1 <= y) && a == 1) && 1 == cond) && r < y) && 0 <= x) && cond == 1) && x <= 100) && b == y)) || (((b + -1) / 2 + 1 <= y && (r + -2) / 2 + 1 < y) && ((((((((((1 <= cond && 4 * y <= x) && cond == 1) && x == r + y * 4) && a % -2 == 0) && x <= 100) && b == a * y) && b % 2 == 0) && q == 4) || (((((((q == 8 && x == r + y * 8) && 1 <= cond) && 8 * y <= x) && cond == 1) && a % -2 == 0) && x <= 100) && b == a * y)) || (((((((((((q == 1 && x == r + y) && 1 <= y) && a == 1) && 1 <= cond) && cond == 1) && b == y) || (((((q == 2 && 2 * r < x) && 1 <= cond) && cond == 1) && x == r + y * 2) && 2 * y <= x)) && a % -2 == 0) && x <= 100) && b == a * y) && b % 2 == 0))) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 47]: Loop Invariant Derived loop invariant: ((r < 2 * b && ((((((((1 <= r && q == 8) && a == 1) && x == r + y * 8) && 1 <= cond) && cond == 1) && b == y) && x <= 100) || ((((((((1 <= r && a == 1) && 1 <= cond) && cond == 1) && x == r + y * 4) && x <= 100) && q == 4) || (((((((1 <= r && q == 2) && a == 1) && 1 <= cond) && cond == 1) && x == r + y * 2) || (((((q == 1 && 1 <= r) && x == r + y) && a == 1) && 1 <= cond) && cond == 1)) && x <= 100)) && b == y))) || ((((((((1 <= r && x == r + q * y) && 1 <= y) && a == 1) && 1 == cond) && 0 <= x) && cond == 1) && x <= 100) && b == y)) || (((x == r + q * y && ((((((1 <= r && 1 <= y) && a == 2) && 1 <= cond) && b == y * 2) && cond == 1) || ((((((a * -1 / -2 * y % 2 == 0 && 1 <= r) && 1 <= y) && b == a * -1 / -2 * y * 2) && a * -1 / -2 % -2 == 0) && cond == 1) && a % -2 == 0))) && 0 <= x) && x <= 100) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((((((((1 <= r && x == r + q * y) && 1 <= y) && 1 == cond) && 0 <= x) && cond == 1) && a % -2 == 0) && b == a * y) && b % 2 == 0) && x <= 100) || ((((((((1 <= r && x == r + q * y) && 1 <= y) && a == 1) && 1 == cond) && 0 <= x) && cond == 1) && x <= 100) && b == y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (((b <= y && (((((((q == 1 && x == r + y) && 1 <= y) && a == 1) && 1 <= cond) && cond == 1) && b == y) || (((q == 2 && cond == 1) && x == r + y * 2) && 2 * y <= x))) && r < y) || (((((((1 <= y && 1 == cond) && 0 <= x) && cond == 1) && a % -2 == 0) && x <= 100) && b == a * y) && b % 2 == 0)) || ((((((((x == r + q * y && 1 <= y) && a == 1) && 1 == cond) && r < y) && 0 <= x) && cond == 1) && x <= 100) && b == y) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: ((x == r + q * y && ((((((1 <= r && 1 <= y) && a == 1) && 1 <= cond) && cond == 1) && b == y) || ((((((1 <= r && 1 <= y) && 1 == cond) && cond == 1) && a % -2 == 0) && b == a * y) && b % 2 == 0))) && 0 <= x) && x <= 100 - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((((((((1 <= y && a == q) && 0 <= x) && r == x) && q == 0) && cond == 1) && x <= 100) && b == 0) || (((((((1 <= y && 0 <= x) && 1 <= cond) && cond == 1) && a % -2 == 0) && b == a * y) && b % 2 == 0) && x <= 100)) || ((((x == r + q * y && r < y) && 0 <= x) && (((((1 <= y && b == y * 4) && 1 <= cond) && a == 4) && cond == 1) || (cond == 1 && ((((1 <= y && a == 1) && 1 <= cond) && b == y) || (((1 <= y && a == 2) && 1 <= cond) && b == y * 2))))) && x <= 100)) || ((b <= y && ((((q == 1 && x == r + y) && cond == 1) && ((((1 <= y && a == 1) && 1 <= cond) && b == y) || (((1 <= y && a == 2) && 1 <= cond) && b == y * 2))) || (((q == 2 && (((((1 <= y && b == y * 4) && 1 <= cond) && a == 4) && cond == 1) || (cond == 1 && ((((1 <= y && a == 1) && 1 <= cond) && b == y) || (((1 <= y && a == 2) && 1 <= cond) && b == y * 2))))) && x == r + y * 2) && 2 * y <= x))) && r < y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 43 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 133.8s, OverallIterations: 17, TraceHistogramMax: 5, AutomataDifference: 106.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 147.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 510 SDtfs, 1188 SDslu, 1172 SDs, 0 SdLazy, 2476 SolverSat, 357 SolverUnsat, 6 SolverUnknown, 0 SolverNotchecked, 34.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 657 GetRequests, 491 SyntacticMatches, 1 SemanticMatches, 165 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 89.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=134occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 17 MinimizatonAttempts, 402 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 10 PreInvPairs, 86 NumberOfFragments, 1168 HoareAnnotationTreeSize, 10 FomulaSimplifications, 796623 FormulaSimplificationTreeSizeReduction, 1.2s HoareSimplificationTime, 10 FomulaSimplificationsInter, 185355 FormulaSimplificationTreeSizeReductionInter, 146.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 21.6s InterpolantComputationTime, 603 NumberOfCodeBlocks, 529 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 586 ConstructedInterpolants, 0 QuantifiedInterpolants, 281585 SizeOfPredicates, 126 NumberOfNonLiveVariables, 1967 ConjunctsInSsa, 299 ConjunctsInUnsatCore, 17 InterpolantComputations, 7 PerfectInterpolantSequences, 207/432 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...