./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.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_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.c -s /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 5aacf5aa4ae22fc13141047610dda3ea2a2cbccf ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:09:06,211 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:09:06,214 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:09:06,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:09:06,315 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:09:06,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:09:06,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:09:06,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:09:06,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:09:06,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:09:06,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:09:06,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:09:06,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:09:06,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:09:06,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:09:06,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:09:06,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:09:06,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:09:06,339 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:09:06,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:09:06,343 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:09:06,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:09:06,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:09:06,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:09:06,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:09:06,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:09:06,362 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:09:06,363 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:09:06,364 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:09:06,365 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:09:06,366 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:09:06,367 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:09:06,368 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:09:06,369 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:09:06,370 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:09:06,372 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:09:06,373 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:09:06,374 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:09:06,375 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:09:06,376 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:09:06,377 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:09:06,378 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-29 19:09:06,411 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:09:06,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:09:06,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:09:06,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:09:06,415 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:09:06,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:09:06,416 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-29 19:09:06,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:09:06,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-29 19:09:06,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:09:06,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:09:06,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:09:06,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:09:06,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-29 19:09:06,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:09:06,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:09:06,420 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:09:06,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:09:06,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:09:06,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:09:06,421 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:09:06,421 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:09:06,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:09:06,422 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:09:06,422 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:09:06,422 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:09:06,423 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:09:06,423 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:09:06,423 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:09:06,423 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_1dcf2346-646c-4629-aa9a-aa6c739e6163/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5aacf5aa4ae22fc13141047610dda3ea2a2cbccf [2020-11-29 19:09:06,699 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:09:06,721 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:09:06,724 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:09:06,725 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:09:06,730 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:09:06,731 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.c [2020-11-29 19:09:06,834 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/data/615780c9d/c080441f9c10407dbfa314160049eea1/FLAGa28f5ff94 [2020-11-29 19:09:07,384 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:09:07,385 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/sv-benchmarks/c/nla-digbench-scaling/hard-ll_unwindbound5.c [2020-11-29 19:09:07,391 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/data/615780c9d/c080441f9c10407dbfa314160049eea1/FLAGa28f5ff94 [2020-11-29 19:09:07,753 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/data/615780c9d/c080441f9c10407dbfa314160049eea1 [2020-11-29 19:09:07,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:09:07,758 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:09:07,760 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:09:07,760 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:09:07,773 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:09:07,774 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:09:07" (1/1) ... [2020-11-29 19:09:07,777 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec912ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:07, skipping insertion in model container [2020-11-29 19:09:07,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:09:07" (1/1) ... [2020-11-29 19:09:07,787 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:09:07,815 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:09:08,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:09:08,029 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:09:08,049 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:09:08,066 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:09:08,066 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08 WrapperNode [2020-11-29 19:09:08,066 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:09:08,068 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:09:08,068 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:09:08,068 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:09:08,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2020-11-29 19:09:08,084 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2020-11-29 19:09:08,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:09:08,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:09:08,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:09:08,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:09:08,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2020-11-29 19:09:08,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2020-11-29 19:09:08,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2020-11-29 19:09:08,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2020-11-29 19:09:08,128 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2020-11-29 19:09:08,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2020-11-29 19:09:08,136 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... [2020-11-29 19:09:08,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:09:08,139 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:09:08,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:09:08,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:09:08,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:09:08,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-29 19:09:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-29 19:09:08,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:09:08,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:09:08,607 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:09:08,613 INFO L298 CfgBuilder]: Removed 36 assume(true) statements. [2020-11-29 19:09:08,615 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:09:08 BoogieIcfgContainer [2020-11-29 19:09:08,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:09:08,630 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:09:08,630 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:09:08,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:09:08,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:09:07" (1/3) ... [2020-11-29 19:09:08,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4add14df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:09:08, skipping insertion in model container [2020-11-29 19:09:08,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:09:08" (2/3) ... [2020-11-29 19:09:08,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4add14df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:09:08, skipping insertion in model container [2020-11-29 19:09:08,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:09:08" (3/3) ... [2020-11-29 19:09:08,640 INFO L111 eAbstractionObserver]: Analyzing ICFG hard-ll_unwindbound5.c [2020-11-29 19:09:08,657 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:09:08,661 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2020-11-29 19:09:08,677 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-11-29 19:09:08,704 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:09:08,704 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:09:08,704 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:09:08,705 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:09:08,705 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:09:08,705 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:09:08,705 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:09:08,705 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:09:08,721 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states. [2020-11-29 19:09:08,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:09:08,726 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:08,726 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:08,727 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 19:09:08,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:08,732 INFO L82 PathProgramCache]: Analyzing trace with hash 119446382, now seen corresponding path program 1 times [2020-11-29 19:09:08,739 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:08,740 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990460515] [2020-11-29 19:09:08,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:08,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:08,881 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 19:09:08,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990460515] [2020-11-29 19:09:08,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:09:08,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-29 19:09:08,884 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562730754] [2020-11-29 19:09:08,889 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-29 19:09:08,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:08,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-29 19:09:08,905 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-29 19:09:08,907 INFO L87 Difference]: Start difference. First operand 41 states. Second operand 2 states. [2020-11-29 19:09:08,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:08,928 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-11-29 19:09:08,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-29 19:09:08,930 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 8 [2020-11-29 19:09:08,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:08,940 INFO L225 Difference]: With dead ends: 79 [2020-11-29 19:09:08,940 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 19:09:08,944 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 19:09:08,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 19:09:08,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-29 19:09:08,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 19:09:08,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-29 19:09:08,982 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2020-11-29 19:09:08,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:08,983 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-29 19:09:08,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-29 19:09:08,983 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-11-29 19:09:08,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:09:08,984 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:08,984 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:08,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:09:08,985 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 19:09:08,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:08,986 INFO L82 PathProgramCache]: Analyzing trace with hash 176704684, now seen corresponding path program 1 times [2020-11-29 19:09:08,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:08,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142704927] [2020-11-29 19:09:08,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:09,100 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 19:09:09,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142704927] [2020-11-29 19:09:09,101 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:09:09,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:09:09,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543561459] [2020-11-29 19:09:09,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:09:09,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:09,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:09:09,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:09:09,104 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-11-29 19:09:09,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:09,255 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2020-11-29 19:09:09,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:09:09,256 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 19:09:09,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:09,258 INFO L225 Difference]: With dead ends: 61 [2020-11-29 19:09:09,258 INFO L226 Difference]: Without dead ends: 59 [2020-11-29 19:09:09,259 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 19:09:09,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-11-29 19:09:09,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 35. [2020-11-29 19:09:09,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 19:09:09,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-29 19:09:09,274 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 8 [2020-11-29 19:09:09,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:09,275 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-29 19:09:09,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:09:09,276 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-29 19:09:09,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:09:09,277 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:09,278 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:09,279 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:09:09,280 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 19:09:09,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:09,283 INFO L82 PathProgramCache]: Analyzing trace with hash -1985979217, now seen corresponding path program 1 times [2020-11-29 19:09:09,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:09,285 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244746412] [2020-11-29 19:09:09,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:09,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:09,438 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 19:09:09,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244746412] [2020-11-29 19:09:09,439 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:09:09,439 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 19:09:09,439 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101163035] [2020-11-29 19:09:09,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:09:09,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:09,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:09:09,440 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:09:09,441 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-11-29 19:09:09,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:09,469 INFO L93 Difference]: Finished difference Result 56 states and 63 transitions. [2020-11-29 19:09:09,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:09:09,472 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 19:09:09,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:09,473 INFO L225 Difference]: With dead ends: 56 [2020-11-29 19:09:09,473 INFO L226 Difference]: Without dead ends: 37 [2020-11-29 19:09:09,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:09:09,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-11-29 19:09:09,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-11-29 19:09:09,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 19:09:09,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-11-29 19:09:09,489 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 10 [2020-11-29 19:09:09,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:09,490 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-11-29 19:09:09,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:09:09,490 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-11-29 19:09:09,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:09:09,491 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:09,491 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:09,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:09:09,492 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 19:09:09,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:09,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1985303953, now seen corresponding path program 1 times [2020-11-29 19:09:09,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:09,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296406301] [2020-11-29 19:09:09,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:09,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:09,585 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 19:09:09,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296406301] [2020-11-29 19:09:09,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:09:09,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:09:09,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794072904] [2020-11-29 19:09:09,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:09:09,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:09,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:09:09,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:09:09,587 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2020-11-29 19:09:09,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:09,769 INFO L93 Difference]: Finished difference Result 56 states and 62 transitions. [2020-11-29 19:09:09,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:09:09,770 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 19:09:09,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:09,771 INFO L225 Difference]: With dead ends: 56 [2020-11-29 19:09:09,772 INFO L226 Difference]: Without dead ends: 54 [2020-11-29 19:09:09,772 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 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 19:09:09,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-11-29 19:09:09,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 35. [2020-11-29 19:09:09,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 19:09:09,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-11-29 19:09:09,791 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 10 [2020-11-29 19:09:09,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:09,791 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-11-29 19:09:09,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:09:09,792 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-11-29 19:09:09,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-29 19:09:09,793 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:09,793 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:09,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:09:09,794 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 19:09:09,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:09,794 INFO L82 PathProgramCache]: Analyzing trace with hash -911432462, now seen corresponding path program 1 times [2020-11-29 19:09:09,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:09,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912681415] [2020-11-29 19:09:09,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:09,818 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:09:09,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [121834405] [2020-11-29 19:09:09,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:09:09,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:09,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:09:09,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:09,955 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 19:09:09,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912681415] [2020-11-29 19:09:09,956 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:09:09,956 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121834405] [2020-11-29 19:09:09,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:09:09,957 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-29 19:09:09,957 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816234931] [2020-11-29 19:09:09,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:09:09,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:09,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:09:09,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:09:09,959 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 4 states. [2020-11-29 19:09:10,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:10,123 INFO L93 Difference]: Finished difference Result 81 states and 93 transitions. [2020-11-29 19:09:10,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:09:10,124 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-11-29 19:09:10,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:10,126 INFO L225 Difference]: With dead ends: 81 [2020-11-29 19:09:10,126 INFO L226 Difference]: Without dead ends: 58 [2020-11-29 19:09:10,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 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 19:09:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-29 19:09:10,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2020-11-29 19:09:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-29 19:09:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-11-29 19:09:10,136 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 12 [2020-11-29 19:09:10,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:10,137 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-11-29 19:09:10,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:09:10,137 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-11-29 19:09:10,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-29 19:09:10,138 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:10,138 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:10,353 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:09:10,353 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 19:09:10,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:10,354 INFO L82 PathProgramCache]: Analyzing trace with hash 854054780, now seen corresponding path program 1 times [2020-11-29 19:09:10,354 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:10,355 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371504796] [2020-11-29 19:09:10,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:10,371 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:09:10,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [791097915] [2020-11-29 19:09:10,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:09:10,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:10,421 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:09:10,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:10,545 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 19:09:10,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371504796] [2020-11-29 19:09:10,546 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:09:10,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791097915] [2020-11-29 19:09:10,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:09:10,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:09:10,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504580681] [2020-11-29 19:09:10,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:09:10,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:10,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:09:10,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:09:10,549 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 5 states. [2020-11-29 19:09:10,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:10,733 INFO L93 Difference]: Finished difference Result 53 states and 58 transitions. [2020-11-29 19:09:10,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:09:10,734 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-11-29 19:09:10,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:10,735 INFO L225 Difference]: With dead ends: 53 [2020-11-29 19:09:10,735 INFO L226 Difference]: Without dead ends: 41 [2020-11-29 19:09:10,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:09:10,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-29 19:09:10,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-11-29 19:09:10,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-29 19:09:10,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-11-29 19:09:10,744 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 16 [2020-11-29 19:09:10,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:10,745 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-11-29 19:09:10,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:09:10,745 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-11-29 19:09:10,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 19:09:10,747 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:10,747 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:10,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:09:10,955 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 19:09:10,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:10,955 INFO L82 PathProgramCache]: Analyzing trace with hash 644070657, now seen corresponding path program 1 times [2020-11-29 19:09:10,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:10,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1928073136] [2020-11-29 19:09:10,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:10,985 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:09:10,985 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [124827765] [2020-11-29 19:09:10,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:09:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:11,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:09:11,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:11,101 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 19:09:11,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1928073136] [2020-11-29 19:09:11,102 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:09:11,102 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124827765] [2020-11-29 19:09:11,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:09:11,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-11-29 19:09:11,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716041042] [2020-11-29 19:09:11,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:09:11,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:11,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:09:11,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:09:11,104 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 5 states. [2020-11-29 19:09:11,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:11,153 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-11-29 19:09:11,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:09:11,157 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-29 19:09:11,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:11,158 INFO L225 Difference]: With dead ends: 62 [2020-11-29 19:09:11,158 INFO L226 Difference]: Without dead ends: 43 [2020-11-29 19:09:11,159 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 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 19:09:11,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-29 19:09:11,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-11-29 19:09:11,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-11-29 19:09:11,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-11-29 19:09:11,166 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-11-29 19:09:11,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:11,166 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-11-29 19:09:11,173 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:09:11,173 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-11-29 19:09:11,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 19:09:11,174 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:11,175 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:11,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:09:11,401 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 19:09:11,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:11,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1125726404, now seen corresponding path program 1 times [2020-11-29 19:09:11,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:11,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010435844] [2020-11-29 19:09:11,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:11,416 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:09:11,428 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [747965882] [2020-11-29 19:09:11,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:09:11,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:11,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 19:09:11,493 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:11,523 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:09:11,525 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:09:11,624 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:09:11,624 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010435844] [2020-11-29 19:09:11,624 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:09:11,645 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [747965882] [2020-11-29 19:09:11,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:09:11,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 19:09:11,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603070194] [2020-11-29 19:09:11,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:09:11,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:11,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:09:11,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:09:11,648 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 7 states. [2020-11-29 19:09:12,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:12,170 INFO L93 Difference]: Finished difference Result 106 states and 121 transitions. [2020-11-29 19:09:12,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:09:12,171 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-11-29 19:09:12,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:12,172 INFO L225 Difference]: With dead ends: 106 [2020-11-29 19:09:12,173 INFO L226 Difference]: Without dead ends: 83 [2020-11-29 19:09:12,173 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2020-11-29 19:09:12,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-29 19:09:12,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 64. [2020-11-29 19:09:12,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-11-29 19:09:12,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2020-11-29 19:09:12,184 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 20 [2020-11-29 19:09:12,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:12,184 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2020-11-29 19:09:12,185 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:09:12,185 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2020-11-29 19:09:12,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-29 19:09:12,186 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:12,186 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:12,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:09:12,387 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 19:09:12,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:12,387 INFO L82 PathProgramCache]: Analyzing trace with hash 962736718, now seen corresponding path program 1 times [2020-11-29 19:09:12,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:12,388 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040201542] [2020-11-29 19:09:12,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:12,396 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:09:12,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [748127375] [2020-11-29 19:09:12,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:09:12,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:12,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 19:09:12,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:13,838 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:09:13,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040201542] [2020-11-29 19:09:13,838 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:09:13,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748127375] [2020-11-29 19:09:13,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:09:13,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 19:09:13,839 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392294000] [2020-11-29 19:09:13,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:09:13,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:13,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:09:13,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2020-11-29 19:09:13,841 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand 6 states. [2020-11-29 19:09:15,170 WARN L193 SmtUtils]: Spent 1.07 s on a formula simplification that was a NOOP. DAG size: 38 [2020-11-29 19:09:16,559 WARN L193 SmtUtils]: Spent 1.24 s on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-11-29 19:09:18,478 WARN L193 SmtUtils]: Spent 1.81 s on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-11-29 19:09:18,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:18,529 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2020-11-29 19:09:18,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:09:18,530 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-11-29 19:09:18,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:18,532 INFO L225 Difference]: With dead ends: 82 [2020-11-29 19:09:18,532 INFO L226 Difference]: Without dead ends: 70 [2020-11-29 19:09:18,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=45, Invalid=86, Unknown=1, NotChecked=0, Total=132 [2020-11-29 19:09:18,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-11-29 19:09:18,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 66. [2020-11-29 19:09:18,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-29 19:09:18,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-11-29 19:09:18,545 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 24 [2020-11-29 19:09:18,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:18,545 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-11-29 19:09:18,545 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:09:18,545 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-11-29 19:09:18,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-29 19:09:18,547 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:18,547 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:18,763 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:09:18,763 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 19:09:18,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:18,764 INFO L82 PathProgramCache]: Analyzing trace with hash 2008197971, now seen corresponding path program 2 times [2020-11-29 19:09:18,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:18,764 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752770927] [2020-11-29 19:09:18,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:18,772 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:09:18,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2113629725] [2020-11-29 19:09:18,772 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:09:18,860 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 19:09:18,860 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:09:18,861 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:09:18,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:18,895 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-29 19:09:18,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752770927] [2020-11-29 19:09:18,896 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:09:18,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2113629725] [2020-11-29 19:09:18,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:09:18,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-29 19:09:18,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510927157] [2020-11-29 19:09:18,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:09:18,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:18,897 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:09:18,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:09:18,898 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 5 states. [2020-11-29 19:09:18,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:18,946 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-11-29 19:09:18,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:09:18,947 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-11-29 19:09:18,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:18,948 INFO L225 Difference]: With dead ends: 95 [2020-11-29 19:09:18,948 INFO L226 Difference]: Without dead ends: 76 [2020-11-29 19:09:18,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:09:18,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-29 19:09:18,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2020-11-29 19:09:18,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-29 19:09:18,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-11-29 19:09:18,960 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 26 [2020-11-29 19:09:18,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:18,960 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-11-29 19:09:18,960 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:09:18,960 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-11-29 19:09:18,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 19:09:18,962 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:18,962 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:19,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:09:19,177 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 19:09:19,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:19,178 INFO L82 PathProgramCache]: Analyzing trace with hash -925600344, now seen corresponding path program 1 times [2020-11-29 19:09:19,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:19,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45065615] [2020-11-29 19:09:19,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:19,185 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:09:19,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [744027387] [2020-11-29 19:09:19,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:09:19,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:19,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:09:19,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:19,286 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:09:19,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45065615] [2020-11-29 19:09:19,287 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:09:19,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [744027387] [2020-11-29 19:09:19,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:09:19,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 19:09:19,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055607206] [2020-11-29 19:09:19,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:09:19,288 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:19,288 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:09:19,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:09:19,289 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 6 states. [2020-11-29 19:09:19,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:19,323 INFO L93 Difference]: Finished difference Result 73 states and 80 transitions. [2020-11-29 19:09:19,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:09:19,324 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-11-29 19:09:19,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:19,325 INFO L225 Difference]: With dead ends: 73 [2020-11-29 19:09:19,325 INFO L226 Difference]: Without dead ends: 67 [2020-11-29 19:09:19,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:09:19,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-29 19:09:19,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-11-29 19:09:19,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-11-29 19:09:19,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-11-29 19:09:19,335 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 27 [2020-11-29 19:09:19,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:19,336 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-11-29 19:09:19,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:09:19,336 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-11-29 19:09:19,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-11-29 19:09:19,337 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:19,337 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:19,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:09:19,565 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 19:09:19,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:19,566 INFO L82 PathProgramCache]: Analyzing trace with hash 2124570240, now seen corresponding path program 1 times [2020-11-29 19:09:19,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:19,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078142859] [2020-11-29 19:09:19,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:19,576 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:09:19,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1050993035] [2020-11-29 19:09:19,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:09:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:19,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:09:19,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:19,700 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:09:19,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078142859] [2020-11-29 19:09:19,700 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:09:19,700 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050993035] [2020-11-29 19:09:19,700 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:09:19,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-29 19:09:19,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763267084] [2020-11-29 19:09:19,701 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:09:19,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:19,702 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:09:19,702 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:09:19,702 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 6 states. [2020-11-29 19:09:19,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:19,759 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2020-11-29 19:09:19,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:09:19,760 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 27 [2020-11-29 19:09:19,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:19,761 INFO L225 Difference]: With dead ends: 78 [2020-11-29 19:09:19,761 INFO L226 Difference]: Without dead ends: 68 [2020-11-29 19:09:19,761 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:09:19,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-29 19:09:19,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-11-29 19:09:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-11-29 19:09:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 75 transitions. [2020-11-29 19:09:19,771 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 75 transitions. Word has length 27 [2020-11-29 19:09:19,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:19,771 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 75 transitions. [2020-11-29 19:09:19,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:09:19,772 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 75 transitions. [2020-11-29 19:09:19,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 19:09:19,773 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:19,773 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:19,985 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-29 19:09:19,985 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 19:09:19,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:19,986 INFO L82 PathProgramCache]: Analyzing trace with hash 2087049878, now seen corresponding path program 2 times [2020-11-29 19:09:19,986 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:19,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [735539451] [2020-11-29 19:09:19,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:19,995 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:09:19,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [320740587] [2020-11-29 19:09:19,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:09:20,086 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:09:20,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:09:20,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 19:09:20,107 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:20,138 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:09:20,139 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:09:20,251 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:09:20,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [735539451] [2020-11-29 19:09:20,252 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:09:20,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [320740587] [2020-11-29 19:09:20,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:09:20,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 19:09:20,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067816659] [2020-11-29 19:09:20,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:09:20,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:20,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:09:20,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:09:20,260 INFO L87 Difference]: Start difference. First operand 68 states and 75 transitions. Second operand 8 states. [2020-11-29 19:09:20,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:20,967 INFO L93 Difference]: Finished difference Result 148 states and 168 transitions. [2020-11-29 19:09:20,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 19:09:20,969 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-11-29 19:09:20,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:20,970 INFO L225 Difference]: With dead ends: 148 [2020-11-29 19:09:20,970 INFO L226 Difference]: Without dead ends: 125 [2020-11-29 19:09:20,971 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:09:20,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-11-29 19:09:20,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 88. [2020-11-29 19:09:20,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-11-29 19:09:20,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 102 transitions. [2020-11-29 19:09:20,993 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 102 transitions. Word has length 28 [2020-11-29 19:09:20,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:20,994 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 102 transitions. [2020-11-29 19:09:20,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:09:20,994 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 102 transitions. [2020-11-29 19:09:20,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-11-29 19:09:20,996 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:20,998 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] [2020-11-29 19:09:21,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:09:21,209 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 19:09:21,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:21,210 INFO L82 PathProgramCache]: Analyzing trace with hash 2011795607, now seen corresponding path program 1 times [2020-11-29 19:09:21,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:21,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140940298] [2020-11-29 19:09:21,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:21,237 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:09:21,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2008511882] [2020-11-29 19:09:21,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:09:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:21,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 27 conjunts are in the unsatisfiable core [2020-11-29 19:09:21,312 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:21,546 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 19:09:21,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140940298] [2020-11-29 19:09:21,546 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:09:21,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2008511882] [2020-11-29 19:09:21,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:09:21,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 19:09:21,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [505871681] [2020-11-29 19:09:21,549 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:09:21,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:21,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:09:21,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:09:21,551 INFO L87 Difference]: Start difference. First operand 88 states and 102 transitions. Second operand 8 states. [2020-11-29 19:09:21,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:21,953 INFO L93 Difference]: Finished difference Result 101 states and 115 transitions. [2020-11-29 19:09:21,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:09:21,954 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-11-29 19:09:21,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:21,955 INFO L225 Difference]: With dead ends: 101 [2020-11-29 19:09:21,955 INFO L226 Difference]: Without dead ends: 99 [2020-11-29 19:09:21,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-11-29 19:09:21,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-11-29 19:09:21,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 91. [2020-11-29 19:09:21,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-29 19:09:21,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 106 transitions. [2020-11-29 19:09:21,975 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 106 transitions. Word has length 31 [2020-11-29 19:09:21,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:21,975 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 106 transitions. [2020-11-29 19:09:21,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:09:21,976 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 106 transitions. [2020-11-29 19:09:21,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 19:09:21,976 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:21,977 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:22,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:09:22,177 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 19:09:22,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:22,178 INFO L82 PathProgramCache]: Analyzing trace with hash -2058870340, now seen corresponding path program 1 times [2020-11-29 19:09:22,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:22,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623888950] [2020-11-29 19:09:22,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:22,185 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:09:22,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [550286566] [2020-11-29 19:09:22,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:09:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:22,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:09:22,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:22,318 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:09:22,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623888950] [2020-11-29 19:09:22,319 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:09:22,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [550286566] [2020-11-29 19:09:22,319 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:09:22,319 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 19:09:22,319 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480957943] [2020-11-29 19:09:22,320 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:09:22,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:22,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:09:22,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:09:22,321 INFO L87 Difference]: Start difference. First operand 91 states and 106 transitions. Second operand 7 states. [2020-11-29 19:09:22,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:22,365 INFO L93 Difference]: Finished difference Result 102 states and 116 transitions. [2020-11-29 19:09:22,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:09:22,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-11-29 19:09:22,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:22,369 INFO L225 Difference]: With dead ends: 102 [2020-11-29 19:09:22,369 INFO L226 Difference]: Without dead ends: 92 [2020-11-29 19:09:22,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:09:22,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-11-29 19:09:22,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-11-29 19:09:22,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-11-29 19:09:22,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 104 transitions. [2020-11-29 19:09:22,389 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 104 transitions. Word has length 32 [2020-11-29 19:09:22,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:22,391 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 104 transitions. [2020-11-29 19:09:22,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:09:22,391 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 104 transitions. [2020-11-29 19:09:22,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-11-29 19:09:22,394 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:22,394 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:22,613 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 19:09:22,613 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 19:09:22,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:22,614 INFO L82 PathProgramCache]: Analyzing trace with hash -721052896, now seen corresponding path program 2 times [2020-11-29 19:09:22,614 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:22,614 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [964697839] [2020-11-29 19:09:22,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:22,635 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:09:22,635 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115136373] [2020-11-29 19:09:22,636 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:09:22,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-11-29 19:09:22,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:09:22,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 19:09:22,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:22,725 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:09:22,725 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:09:22,786 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-11-29 19:09:22,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [964697839] [2020-11-29 19:09:22,788 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:09:22,789 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115136373] [2020-11-29 19:09:22,789 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:09:22,789 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-11-29 19:09:22,789 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179817967] [2020-11-29 19:09:22,790 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:09:22,790 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:22,790 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:09:22,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:09:22,791 INFO L87 Difference]: Start difference. First operand 91 states and 104 transitions. Second operand 6 states. [2020-11-29 19:09:23,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:23,049 INFO L93 Difference]: Finished difference Result 125 states and 145 transitions. [2020-11-29 19:09:23,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:09:23,051 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-11-29 19:09:23,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:23,052 INFO L225 Difference]: With dead ends: 125 [2020-11-29 19:09:23,052 INFO L226 Difference]: Without dead ends: 113 [2020-11-29 19:09:23,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 27 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 19:09:23,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-11-29 19:09:23,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 107. [2020-11-29 19:09:23,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-29 19:09:23,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 124 transitions. [2020-11-29 19:09:23,064 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 124 transitions. Word has length 32 [2020-11-29 19:09:23,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:23,065 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 124 transitions. [2020-11-29 19:09:23,065 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:09:23,065 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 124 transitions. [2020-11-29 19:09:23,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 19:09:23,066 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:23,066 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:23,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 19:09:23,293 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 19:09:23,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:23,294 INFO L82 PathProgramCache]: Analyzing trace with hash 466728754, now seen corresponding path program 1 times [2020-11-29 19:09:23,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:23,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1861584793] [2020-11-29 19:09:23,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:23,304 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:09:23,304 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [756030007] [2020-11-29 19:09:23,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:09:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:09:23,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-29 19:09:23,392 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:23,779 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:09:23,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1861584793] [2020-11-29 19:09:23,780 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:09:23,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756030007] [2020-11-29 19:09:23,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:09:23,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 19:09:23,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958848060] [2020-11-29 19:09:23,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 19:09:23,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:23,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 19:09:23,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:09:23,783 INFO L87 Difference]: Start difference. First operand 107 states and 124 transitions. Second operand 11 states. [2020-11-29 19:09:24,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:09:24,485 INFO L93 Difference]: Finished difference Result 184 states and 207 transitions. [2020-11-29 19:09:24,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 19:09:24,501 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-11-29 19:09:24,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:09:24,503 INFO L225 Difference]: With dead ends: 184 [2020-11-29 19:09:24,503 INFO L226 Difference]: Without dead ends: 126 [2020-11-29 19:09:24,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:09:24,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-11-29 19:09:24,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 96. [2020-11-29 19:09:24,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-29 19:09:24,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 113 transitions. [2020-11-29 19:09:24,518 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 113 transitions. Word has length 36 [2020-11-29 19:09:24,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:09:24,518 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 113 transitions. [2020-11-29 19:09:24,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 19:09:24,519 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 113 transitions. [2020-11-29 19:09:24,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-11-29 19:09:24,520 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:09:24,520 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-29 19:09:24,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 19:09:24,733 INFO L429 AbstractCegarLoop]: === Iteration 18 === [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 19:09:24,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:09:24,734 INFO L82 PathProgramCache]: Analyzing trace with hash 1403292264, now seen corresponding path program 3 times [2020-11-29 19:09:24,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:09:24,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165779527] [2020-11-29 19:09:24,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:09:24,741 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:09:24,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1338036519] [2020-11-29 19:09:24,741 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:09:24,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-29 19:09:24,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:09:24,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 19:09:24,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:09:24,827 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:09:24,827 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:09:29,127 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:09:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 24 proven. 1 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-11-29 19:09:35,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165779527] [2020-11-29 19:09:35,233 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:09:35,233 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338036519] [2020-11-29 19:09:35,233 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:09:35,233 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 19:09:35,233 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887514956] [2020-11-29 19:09:35,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:09:35,234 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:09:35,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:09:35,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2020-11-29 19:09:35,234 INFO L87 Difference]: Start difference. First operand 96 states and 113 transitions. Second operand 6 states. [2020-11-29 19:10:15,795 WARN L193 SmtUtils]: Spent 20.04 s on a formula simplification. DAG size of input: 28 DAG size of output: 23 [2020-11-29 19:10:28,702 WARN L193 SmtUtils]: Spent 4.34 s on a formula simplification that was a NOOP. DAG size: 19 [2020-11-29 19:10:52,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:52,314 INFO L93 Difference]: Finished difference Result 113 states and 127 transitions. [2020-11-29 19:10:52,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:10:52,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-11-29 19:10:52,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:52,324 INFO L225 Difference]: With dead ends: 113 [2020-11-29 19:10:52,324 INFO L226 Difference]: Without dead ends: 103 [2020-11-29 19:10:52,325 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=31, Invalid=55, Unknown=4, NotChecked=0, Total=90 [2020-11-29 19:10:52,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-29 19:10:52,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2020-11-29 19:10:52,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-11-29 19:10:52,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 109 transitions. [2020-11-29 19:10:52,338 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 109 transitions. Word has length 36 [2020-11-29 19:10:52,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:52,338 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 109 transitions. [2020-11-29 19:10:52,338 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:10:52,338 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 109 transitions. [2020-11-29 19:10:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-11-29 19:10:52,339 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:52,339 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:52,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:52,553 INFO L429 AbstractCegarLoop]: === Iteration 19 === [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 19:10:52,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:52,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1881074929, now seen corresponding path program 1 times [2020-11-29 19:10:52,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:52,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138441232] [2020-11-29 19:10:52,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:52,569 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:10:52,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1668720411] [2020-11-29 19:10:52,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:10:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:10:52,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:10:52,639 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:52,693 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:52,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [138441232] [2020-11-29 19:10:52,693 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:10:52,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668720411] [2020-11-29 19:10:52,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:10:52,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-29 19:10:52,694 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702015562] [2020-11-29 19:10:52,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:10:52,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:52,695 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:10:52,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:10:52,695 INFO L87 Difference]: Start difference. First operand 94 states and 109 transitions. Second operand 7 states. [2020-11-29 19:10:52,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:52,858 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2020-11-29 19:10:52,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:10:52,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-11-29 19:10:52,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:52,860 INFO L225 Difference]: With dead ends: 104 [2020-11-29 19:10:52,860 INFO L226 Difference]: Without dead ends: 96 [2020-11-29 19:10:52,860 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:10:52,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-29 19:10:52,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2020-11-29 19:10:52,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-11-29 19:10:52,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 111 transitions. [2020-11-29 19:10:52,871 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 111 transitions. Word has length 37 [2020-11-29 19:10:52,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:52,872 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 111 transitions. [2020-11-29 19:10:52,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:10:52,872 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 111 transitions. [2020-11-29 19:10:52,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-11-29 19:10:52,873 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:52,873 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:53,101 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:53,101 INFO L429 AbstractCegarLoop]: === Iteration 20 === [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 19:10:53,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:53,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1076365435, now seen corresponding path program 2 times [2020-11-29 19:10:53,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:53,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164878360] [2020-11-29 19:10:53,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:53,119 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:10:53,122 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1553423732] [2020-11-29 19:10:53,123 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/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 19:10:53,195 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:10:53,196 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:10:53,198 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-29 19:10:53,200 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:53,465 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-29 19:10:53,677 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-11-29 19:10:53,948 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 19:10:54,197 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 21 [2020-11-29 19:10:54,583 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 19:10:54,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164878360] [2020-11-29 19:10:54,584 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:10:54,584 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553423732] [2020-11-29 19:10:54,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:10:54,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-29 19:10:54,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623488912] [2020-11-29 19:10:54,585 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 19:10:54,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:54,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 19:10:54,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:10:54,586 INFO L87 Difference]: Start difference. First operand 96 states and 111 transitions. Second operand 9 states. [2020-11-29 19:10:55,105 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 20 [2020-11-29 19:10:55,518 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-29 19:10:55,969 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 19:10:56,411 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2020-11-29 19:10:56,637 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-11-29 19:10:57,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:57,228 INFO L93 Difference]: Finished difference Result 114 states and 129 transitions. [2020-11-29 19:10:57,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 19:10:57,237 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2020-11-29 19:10:57,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:57,238 INFO L225 Difference]: With dead ends: 114 [2020-11-29 19:10:57,238 INFO L226 Difference]: Without dead ends: 112 [2020-11-29 19:10:57,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2020-11-29 19:10:57,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-11-29 19:10:57,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 99. [2020-11-29 19:10:57,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-11-29 19:10:57,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 114 transitions. [2020-11-29 19:10:57,249 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 114 transitions. Word has length 39 [2020-11-29 19:10:57,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:57,250 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 114 transitions. [2020-11-29 19:10:57,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 19:10:57,250 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 114 transitions. [2020-11-29 19:10:57,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-29 19:10:57,251 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:57,251 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:57,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:57,477 INFO L429 AbstractCegarLoop]: === Iteration 21 === [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 19:10:57,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:57,477 INFO L82 PathProgramCache]: Analyzing trace with hash 992385166, now seen corresponding path program 2 times [2020-11-29 19:10:57,477 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:57,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848006032] [2020-11-29 19:10:57,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:57,488 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:10:57,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [155426573] [2020-11-29 19:10:57,489 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:57,547 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:10:57,547 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:10:57,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 19:10:57,549 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:57,621 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:57,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848006032] [2020-11-29 19:10:57,621 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:10:57,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [155426573] [2020-11-29 19:10:57,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:10:57,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 19:10:57,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858969915] [2020-11-29 19:10:57,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:10:57,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:57,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:10:57,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:10:57,623 INFO L87 Difference]: Start difference. First operand 99 states and 114 transitions. Second operand 8 states. [2020-11-29 19:10:57,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:57,816 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2020-11-29 19:10:57,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:10:57,817 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-11-29 19:10:57,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:57,818 INFO L225 Difference]: With dead ends: 118 [2020-11-29 19:10:57,818 INFO L226 Difference]: Without dead ends: 108 [2020-11-29 19:10:57,818 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:10:57,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-11-29 19:10:57,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2020-11-29 19:10:57,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-11-29 19:10:57,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 122 transitions. [2020-11-29 19:10:57,831 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 122 transitions. Word has length 40 [2020-11-29 19:10:57,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:57,831 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 122 transitions. [2020-11-29 19:10:57,831 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:10:57,832 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 122 transitions. [2020-11-29 19:10:57,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 19:10:57,832 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:57,833 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:58,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-29 19:10:58,049 INFO L429 AbstractCegarLoop]: === Iteration 22 === [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 19:10:58,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:58,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1999890783, now seen corresponding path program 2 times [2020-11-29 19:10:58,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:58,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429033255] [2020-11-29 19:10:58,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:58,069 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:10:58,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1204071913] [2020-11-29 19:10:58,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:58,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:10:58,124 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:10:58,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 19:10:58,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:58,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429033255] [2020-11-29 19:10:58,210 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:10:58,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1204071913] [2020-11-29 19:10:58,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:10:58,210 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-29 19:10:58,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661029717] [2020-11-29 19:10:58,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:10:58,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:58,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:10:58,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:10:58,212 INFO L87 Difference]: Start difference. First operand 107 states and 122 transitions. Second operand 8 states. [2020-11-29 19:10:58,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:58,435 INFO L93 Difference]: Finished difference Result 117 states and 132 transitions. [2020-11-29 19:10:58,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 19:10:58,438 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 45 [2020-11-29 19:10:58,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:58,439 INFO L225 Difference]: With dead ends: 117 [2020-11-29 19:10:58,440 INFO L226 Difference]: Without dead ends: 109 [2020-11-29 19:10:58,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=81, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:10:58,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-11-29 19:10:58,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2020-11-29 19:10:58,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-11-29 19:10:58,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 124 transitions. [2020-11-29 19:10:58,456 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 124 transitions. Word has length 45 [2020-11-29 19:10:58,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:58,456 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 124 transitions. [2020-11-29 19:10:58,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:10:58,457 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 124 transitions. [2020-11-29 19:10:58,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-29 19:10:58,457 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:58,458 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:58,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-29 19:10:58,681 INFO L429 AbstractCegarLoop]: === Iteration 23 === [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 19:10:58,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:58,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1287442304, now seen corresponding path program 3 times [2020-11-29 19:10:58,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:58,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746196219] [2020-11-29 19:10:58,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:58,702 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:10:58,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [774458613] [2020-11-29 19:10:58,703 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:10:59,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 19:10:59,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:10:59,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 19:10:59,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:10:59,113 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:10:59,113 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746196219] [2020-11-29 19:10:59,114 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:10:59,114 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774458613] [2020-11-29 19:10:59,114 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:10:59,114 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-29 19:10:59,114 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935899418] [2020-11-29 19:10:59,114 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 19:10:59,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:10:59,115 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 19:10:59,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:10:59,115 INFO L87 Difference]: Start difference. First operand 109 states and 124 transitions. Second operand 9 states. [2020-11-29 19:10:59,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:10:59,312 INFO L93 Difference]: Finished difference Result 128 states and 143 transitions. [2020-11-29 19:10:59,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:10:59,316 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 46 [2020-11-29 19:10:59,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:10:59,317 INFO L225 Difference]: With dead ends: 128 [2020-11-29 19:10:59,317 INFO L226 Difference]: Without dead ends: 89 [2020-11-29 19:10:59,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=51, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:10:59,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-11-29 19:10:59,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 85. [2020-11-29 19:10:59,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-29 19:10:59,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-11-29 19:10:59,329 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 46 [2020-11-29 19:10:59,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:10:59,329 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-11-29 19:10:59,329 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 19:10:59,329 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-11-29 19:10:59,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-11-29 19:10:59,330 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:10:59,330 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:10:59,557 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-29 19:10:59,557 INFO L429 AbstractCegarLoop]: === Iteration 24 === [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 19:10:59,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:10:59,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1255981043, now seen corresponding path program 3 times [2020-11-29 19:10:59,558 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:10:59,558 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243470455] [2020-11-29 19:10:59,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:10:59,564 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:10:59,564 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [502291626] [2020-11-29 19:10:59,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:11:02,648 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-29 19:11:02,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:11:02,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 39 conjunts are in the unsatisfiable core [2020-11-29 19:11:02,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:11:02,735 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-29 19:11:02,735 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:11:03,334 WARN L193 SmtUtils]: Spent 172.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-11-29 19:11:03,775 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-11-29 19:11:04,623 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2020-11-29 19:11:05,307 WARN L193 SmtUtils]: Spent 326.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 28 [2020-11-29 19:11:05,981 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 27 [2020-11-29 19:11:06,004 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-29 19:11:06,007 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-29 19:11:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:11:06,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243470455] [2020-11-29 19:11:06,397 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-29 19:11:06,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502291626] [2020-11-29 19:11:06,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-29 19:11:06,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-11-29 19:11:06,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547503668] [2020-11-29 19:11:06,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 19:11:06,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:11:06,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 19:11:06,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:11:06,399 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 11 states. [2020-11-29 19:11:06,940 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 14 DAG size of output: 8 [2020-11-29 19:11:07,165 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 22 [2020-11-29 19:11:07,381 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 24 [2020-11-29 19:11:08,133 WARN L193 SmtUtils]: Spent 399.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 28 [2020-11-29 19:11:08,751 WARN L193 SmtUtils]: Spent 397.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 30 [2020-11-29 19:11:09,635 WARN L193 SmtUtils]: Spent 465.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 32 [2020-11-29 19:11:10,350 WARN L193 SmtUtils]: Spent 492.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-11-29 19:11:11,453 WARN L193 SmtUtils]: Spent 382.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 29 [2020-11-29 19:11:12,203 WARN L193 SmtUtils]: Spent 319.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 34 [2020-11-29 19:11:13,022 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 33 [2020-11-29 19:11:13,908 WARN L193 SmtUtils]: Spent 543.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 35 [2020-11-29 19:11:14,568 WARN L193 SmtUtils]: Spent 362.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 36 [2020-11-29 19:11:14,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:11:14,725 INFO L93 Difference]: Finished difference Result 91 states and 94 transitions. [2020-11-29 19:11:14,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 19:11:14,729 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 47 [2020-11-29 19:11:14,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:11:14,730 INFO L225 Difference]: With dead ends: 91 [2020-11-29 19:11:14,730 INFO L226 Difference]: Without dead ends: 67 [2020-11-29 19:11:14,731 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2020-11-29 19:11:14,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-11-29 19:11:14,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-11-29 19:11:14,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-29 19:11:14,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2020-11-29 19:11:14,741 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 47 [2020-11-29 19:11:14,741 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:11:14,742 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2020-11-29 19:11:14,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 19:11:14,742 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2020-11-29 19:11:14,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-29 19:11:14,742 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:11:14,743 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-29 19:11:14,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-29 19:11:14,943 INFO L429 AbstractCegarLoop]: === Iteration 25 === [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 19:11:14,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:11:14,944 INFO L82 PathProgramCache]: Analyzing trace with hash 1582439776, now seen corresponding path program 4 times [2020-11-29 19:11:14,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:11:14,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979065187] [2020-11-29 19:11:14,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:11:14,951 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-29 19:11:14,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [405922099] [2020-11-29 19:11:14,951 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:11:15,007 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:11:15,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-11-29 19:11:15,008 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:11:15,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:11:15,035 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:11:15,092 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:11:15,092 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:11:15,306 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-29 19:11:15,369 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:11:15 BoogieIcfgContainer [2020-11-29 19:11:15,369 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:11:15,370 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:11:15,370 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:11:15,370 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:11:15,371 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:09:08" (3/4) ... [2020-11-29 19:11:15,373 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:11:15,430 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_1dcf2346-646c-4629-aa9a-aa6c739e6163/bin/uautomizer/witness.graphml [2020-11-29 19:11:15,430 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:11:15,431 INFO L168 Benchmark]: Toolchain (without parser) took 127673.27 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 76.2 MB in the beginning and 99.5 MB in the end (delta: -23.4 MB). Peak memory consumption was 27.6 MB. Max. memory is 16.1 GB. [2020-11-29 19:11:15,431 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 71.3 MB. Free memory was 33.2 MB in the beginning and 33.2 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:11:15,432 INFO L168 Benchmark]: CACSL2BoogieTranslator took 306.96 ms. Allocated memory is still 109.1 MB. Free memory was 76.2 MB in the beginning and 86.0 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:11:15,432 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.54 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 83.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:11:15,432 INFO L168 Benchmark]: Boogie Preprocessor took 28.64 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 82.9 MB in the end (delta: 946.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:11:15,432 INFO L168 Benchmark]: RCFGBuilder took 476.47 ms. Allocated memory is still 109.1 MB. Free memory was 82.9 MB in the beginning and 66.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:11:15,433 INFO L168 Benchmark]: TraceAbstraction took 126740.06 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 65.6 MB in the beginning and 103.7 MB in the end (delta: -38.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:11:15,433 INFO L168 Benchmark]: Witness Printer took 60.19 ms. Allocated memory is still 159.4 MB. Free memory was 102.7 MB in the beginning and 99.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-29 19:11:15,435 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 71.3 MB. Free memory was 33.2 MB in the beginning and 33.2 MB in the end (delta: 33.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 306.96 ms. Allocated memory is still 109.1 MB. Free memory was 76.2 MB in the beginning and 86.0 MB in the end (delta: -9.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.54 ms. Allocated memory is still 109.1 MB. Free memory was 85.4 MB in the beginning and 83.9 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.64 ms. Allocated memory is still 109.1 MB. Free memory was 83.9 MB in the beginning and 82.9 MB in the end (delta: 946.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 476.47 ms. Allocated memory is still 109.1 MB. Free memory was 82.9 MB in the beginning and 66.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 126740.06 ms. Allocated memory was 109.1 MB in the beginning and 159.4 MB in the end (delta: 50.3 MB). Free memory was 65.6 MB in the beginning and 103.7 MB in the end (delta: -38.2 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. * Witness Printer took 60.19 ms. Allocated memory is still 159.4 MB. Free memory was 102.7 MB in the beginning and 99.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L22] int counter = 0; VAL [counter=0] [L24] unsigned int A, B; [L25] long long r, d, p, q; [L26] A = __VERIFIER_nondet_uint() [L27] B = __VERIFIER_nondet_uint() [L12] COND FALSE !(!cond) VAL [counter=0] [L30] r = A [L31] d = B [L32] p = 1 [L33] q = 0 VAL [counter=0] [L35] EXPR counter++ VAL [counter=1] [L35] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L15] COND FALSE !(!(cond)) VAL [counter=1] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=1] [L35] EXPR counter++ VAL [counter=2] [L35] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L15] COND FALSE !(!(cond)) VAL [counter=2] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=2] [L35] EXPR counter++ VAL [counter=3] [L35] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L15] COND FALSE !(!(cond)) VAL [counter=3] [L39] COND FALSE !(!(r >= d)) [L41] d = 2 * d [L42] p = 2 * p VAL [counter=3] [L35] EXPR counter++ VAL [counter=4] [L35] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L15] COND FALSE !(!(cond)) VAL [counter=4] [L39] COND TRUE !(r >= d) VAL [counter=4] [L45] EXPR counter++ VAL [counter=5] [L45] COND TRUE counter++<5 [L15] COND FALSE !(!(cond)) VAL [counter=5] [L15] COND FALSE !(!(cond)) VAL [counter=5] [L49] COND FALSE !(!(p != 1)) [L51] d = d / 2 [L52] p = p / 2 VAL [counter=5] [L53] COND TRUE r >= d [L54] r = r - d [L55] q = q + p VAL [counter=5] [L45] EXPR counter++ VAL [counter=6] [L45] COND FALSE !(counter++<5) [L15] COND TRUE !(cond) VAL [counter=6] [L8] __assert_fail("0", "hard-ll.c", 8, "reach_error") VAL [counter=6] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 41 locations, 7 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 126.6s, OverallIterations: 25, TraceHistogramMax: 5, AutomataDifference: 97.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 814 SDtfs, 1157 SDslu, 2011 SDs, 0 SdLazy, 1654 SolverSat, 275 SolverUnsat, 21 SolverUnknown, 0 SolverNotchecked, 49.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 692 GetRequests, 506 SyntacticMatches, 3 SemanticMatches, 183 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 54.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=109occurred in iteration=22, 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, 24 MinimizatonAttempts, 193 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 3.8s SatisfiabilityAnalysisTime, 19.0s InterpolantComputationTime, 703 NumberOfCodeBlocks, 655 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 631 ConstructedInterpolants, 2 QuantifiedInterpolants, 205121 SizeOfPredicates, 110 NumberOfNonLiveVariables, 2463 ConjunctsInSsa, 290 ConjunctsInUnsatCore, 24 InterpolantComputations, 8 PerfectInterpolantSequences, 115/386 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 incorrect! Received shutdown request...