./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/array-patterns/array7_pattern.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_05cd811d-1836-4853-a41e-74f6cdafec74/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/array-patterns/array7_pattern.c -s /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/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 222856e5aac50556115eb69aa7e0e0af3d4be5d4 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:00:45,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:00:45,140 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:00:45,198 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:00:45,198 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:00:45,200 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:00:45,201 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:00:45,206 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:00:45,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:00:45,209 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:00:45,210 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:00:45,212 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:00:45,212 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:00:45,213 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:00:45,215 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:00:45,222 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:00:45,224 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:00:45,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:00:45,251 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:00:45,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:00:45,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:00:45,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:00:45,268 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:00:45,269 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:00:45,275 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:00:45,276 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:00:45,276 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:00:45,277 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:00:45,277 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:00:45,278 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:00:45,279 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:00:45,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:00:45,280 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:00:45,281 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:00:45,282 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:00:45,283 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:00:45,283 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:00:45,284 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:00:45,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:00:45,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:00:45,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:00:45,293 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-28 03:00:45,328 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:00:45,328 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:00:45,330 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:00:45,330 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:00:45,330 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:00:45,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:00:45,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-28 03:00:45,331 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:00:45,331 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-28 03:00:45,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:00:45,332 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:00:45,332 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:00:45,332 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:00:45,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-28 03:00:45,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:00:45,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:00:45,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:00:45,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:00:45,333 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:00:45,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:00:45,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:00:45,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:00:45,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:00:45,334 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:00:45,335 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:00:45,335 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:00:45,335 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:00:45,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:00:45,335 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:00:45,335 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_05cd811d-1836-4853-a41e-74f6cdafec74/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 222856e5aac50556115eb69aa7e0e0af3d4be5d4 [2020-11-28 03:00:45,577 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:00:45,607 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:00:45,609 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:00:45,610 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:00:45,612 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:00:45,614 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/bin/uautomizer/../../sv-benchmarks/c/array-patterns/array7_pattern.c [2020-11-28 03:00:45,671 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/bin/uautomizer/data/f3521c83a/78116598a274497e95db9ad376bad6d8/FLAGb4ac02ce8 [2020-11-28 03:00:46,118 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:00:46,118 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/sv-benchmarks/c/array-patterns/array7_pattern.c [2020-11-28 03:00:46,132 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/bin/uautomizer/data/f3521c83a/78116598a274497e95db9ad376bad6d8/FLAGb4ac02ce8 [2020-11-28 03:00:46,528 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/bin/uautomizer/data/f3521c83a/78116598a274497e95db9ad376bad6d8 [2020-11-28 03:00:46,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:00:46,534 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:00:46,538 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:46,538 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:00:46,542 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:00:46,543 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:46" (1/1) ... [2020-11-28 03:00:46,545 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27b02cd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46, skipping insertion in model container [2020-11-28 03:00:46,545 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:00:46" (1/1) ... [2020-11-28 03:00:46,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:00:46,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:00:46,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:46,758 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:00:46,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:00:46,793 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:00:46,794 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46 WrapperNode [2020-11-28 03:00:46,794 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:00:46,795 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:46,795 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:00:46,796 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:00:46,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2020-11-28 03:00:46,810 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2020-11-28 03:00:46,831 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:00:46,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:00:46,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:00:46,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:00:46,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2020-11-28 03:00:46,841 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2020-11-28 03:00:46,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2020-11-28 03:00:46,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2020-11-28 03:00:46,849 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2020-11-28 03:00:46,853 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2020-11-28 03:00:46,855 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... [2020-11-28 03:00:46,857 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:00:46,858 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:00:46,858 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:00:46,858 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:00:46,859 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/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 [2020-11-28 03:00:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-28 03:00:46,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:00:46,953 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:00:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:00:46,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:00:46,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:00:46,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:00:49,623 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:00:49,625 INFO L298 CfgBuilder]: Removed 17 assume(true) statements. [2020-11-28 03:00:49,629 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:49 BoogieIcfgContainer [2020-11-28 03:00:49,629 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:00:49,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:00:49,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:00:49,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:00:49,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:00:46" (1/3) ... [2020-11-28 03:00:49,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21791080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:49, skipping insertion in model container [2020-11-28 03:00:49,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:00:46" (2/3) ... [2020-11-28 03:00:49,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21791080 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:00:49, skipping insertion in model container [2020-11-28 03:00:49,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:49" (3/3) ... [2020-11-28 03:00:49,638 INFO L111 eAbstractionObserver]: Analyzing ICFG array7_pattern.c [2020-11-28 03:00:49,652 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:00:49,656 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-28 03:00:49,664 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-28 03:00:49,685 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:00:49,685 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:00:49,685 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:00:49,685 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:00:49,686 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:00:49,686 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:00:49,686 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:00:49,686 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:00:49,698 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-11-28 03:00:49,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-11-28 03:00:49,702 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:49,703 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:49,703 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:49,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:49,709 INFO L82 PathProgramCache]: Analyzing trace with hash 762886292, now seen corresponding path program 1 times [2020-11-28 03:00:49,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:49,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502857191] [2020-11-28 03:00:49,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:49,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:49,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:49,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502857191] [2020-11-28 03:00:49,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:49,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:00:49,850 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329890142] [2020-11-28 03:00:49,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-11-28 03:00:49,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:49,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-11-28 03:00:49,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-11-28 03:00:49,868 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2020-11-28 03:00:49,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:49,882 INFO L93 Difference]: Finished difference Result 44 states and 63 transitions. [2020-11-28 03:00:49,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:00:49,884 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2020-11-28 03:00:49,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:49,892 INFO L225 Difference]: With dead ends: 44 [2020-11-28 03:00:49,892 INFO L226 Difference]: Without dead ends: 19 [2020-11-28 03:00:49,895 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 [2020-11-28 03:00:49,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-28 03:00:49,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-11-28 03:00:49,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 03:00:49,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 21 transitions. [2020-11-28 03:00:49,925 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 21 transitions. Word has length 11 [2020-11-28 03:00:49,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:49,925 INFO L481 AbstractCegarLoop]: Abstraction has 19 states and 21 transitions. [2020-11-28 03:00:49,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-11-28 03:00:49,926 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 21 transitions. [2020-11-28 03:00:49,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-28 03:00:49,926 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:49,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:49,927 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:00:49,927 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:49,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:49,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1007772984, now seen corresponding path program 1 times [2020-11-28 03:00:49,928 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:49,929 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955999208] [2020-11-28 03:00:49,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:49,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:50,115 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:50,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955999208] [2020-11-28 03:00:50,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:50,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:00:50,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779804514] [2020-11-28 03:00:50,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:00:50,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:50,118 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:00:50,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:00:50,118 INFO L87 Difference]: Start difference. First operand 19 states and 21 transitions. Second operand 4 states. [2020-11-28 03:00:50,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:50,218 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-11-28 03:00:50,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:00:50,218 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-28 03:00:50,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:50,219 INFO L225 Difference]: With dead ends: 24 [2020-11-28 03:00:50,219 INFO L226 Difference]: Without dead ends: 20 [2020-11-28 03:00:50,220 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 [2020-11-28 03:00:50,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-11-28 03:00:50,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-11-28 03:00:50,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:00:50,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-11-28 03:00:50,224 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2020-11-28 03:00:50,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:50,225 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-11-28 03:00:50,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:00:50,225 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-11-28 03:00:50,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:00:50,225 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:50,226 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:50,226 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:00:50,226 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:50,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:50,227 INFO L82 PathProgramCache]: Analyzing trace with hash -2048962070, now seen corresponding path program 1 times [2020-11-28 03:00:50,227 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:50,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [393062005] [2020-11-28 03:00:50,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:50,388 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:50,388 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [393062005] [2020-11-28 03:00:50,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:00:50,389 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-28 03:00:50,389 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746289712] [2020-11-28 03:00:50,389 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:00:50,389 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:50,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:00:50,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:00:50,391 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2020-11-28 03:00:50,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:50,466 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-11-28 03:00:50,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:00:50,468 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-11-28 03:00:50,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:50,469 INFO L225 Difference]: With dead ends: 37 [2020-11-28 03:00:50,469 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 03:00:50,470 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 [2020-11-28 03:00:50,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 03:00:50,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-11-28 03:00:50,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 03:00:50,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-11-28 03:00:50,473 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2020-11-28 03:00:50,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:50,474 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-11-28 03:00:50,474 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:00:50,474 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-11-28 03:00:50,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:00:50,475 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:50,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:50,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:00:50,475 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:50,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:50,476 INFO L82 PathProgramCache]: Analyzing trace with hash 1191820108, now seen corresponding path program 1 times [2020-11-28 03:00:50,476 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:50,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642101045] [2020-11-28 03:00:50,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:50,501 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:00:50,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [724236833] [2020-11-28 03:00:50,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/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 [2020-11-28 03:00:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:00:50,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 03:00:50,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:50,683 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:00:50,683 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:00:50,729 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:00:50,734 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:00:50,752 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:00:50,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642101045] [2020-11-28 03:00:50,752 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:00:50,753 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [724236833] [2020-11-28 03:00:50,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:00:50,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-28 03:00:50,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624837110] [2020-11-28 03:00:50,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:00:50,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:50,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:00:50,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:00:50,755 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 8 states. [2020-11-28 03:00:53,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:53,883 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-11-28 03:00:53,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:00:53,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-11-28 03:00:53,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:53,884 INFO L225 Difference]: With dead ends: 49 [2020-11-28 03:00:53,884 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 03:00:53,885 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:00:53,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 03:00:53,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-11-28 03:00:53,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-28 03:00:53,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-11-28 03:00:53,890 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 20 [2020-11-28 03:00:53,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:53,890 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-11-28 03:00:53,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:00:53,891 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-28 03:00:53,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:00:53,891 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:53,892 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:54,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:00:54,112 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:54,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:54,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1732203566, now seen corresponding path program 2 times [2020-11-28 03:00:54,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:54,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028454415] [2020-11-28 03:00:54,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:54,127 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:00:54,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1308224729] [2020-11-28 03:00:54,130 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/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 [2020-11-28 03:00:54,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:00:54,217 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:00:54,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:00:54,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:54,284 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028454415] [2020-11-28 03:00:54,284 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:00:54,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1308224729] [2020-11-28 03:00:54,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:00:54,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-11-28 03:00:54,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474382747] [2020-11-28 03:00:54,285 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:00:54,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:54,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:00:54,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:00:54,287 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 7 states. [2020-11-28 03:00:54,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:54,402 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-11-28 03:00:54,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:00:54,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-11-28 03:00:54,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:54,404 INFO L225 Difference]: With dead ends: 30 [2020-11-28 03:00:54,404 INFO L226 Difference]: Without dead ends: 26 [2020-11-28 03:00:54,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:00:54,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-28 03:00:54,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-11-28 03:00:54,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 03:00:54,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-11-28 03:00:54,408 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2020-11-28 03:00:54,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:54,409 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-11-28 03:00:54,409 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:00:54,409 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-11-28 03:00:54,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-11-28 03:00:54,410 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:54,410 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:54,610 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:00:54,611 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:54,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:54,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1746449968, now seen corresponding path program 3 times [2020-11-28 03:00:54,611 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:54,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890832488] [2020-11-28 03:00:54,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:54,621 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:00:54,621 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1132262187] [2020-11-28 03:00:54,621 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/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 [2020-11-28 03:00:54,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2020-11-28 03:00:54,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:00:54,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:00:54,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:54,726 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:00:54,727 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:00:54,740 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:00:54,762 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:00:54,762 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:00:54,897 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-11-28 03:00:54,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890832488] [2020-11-28 03:00:54,899 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:00:54,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1132262187] [2020-11-28 03:00:54,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:00:54,905 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-28 03:00:54,905 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990013446] [2020-11-28 03:00:54,905 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:00:54,907 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:54,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:00:54,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:00:54,908 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 9 states. [2020-11-28 03:00:55,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:55,391 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-11-28 03:00:55,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 03:00:55,392 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-11-28 03:00:55,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:55,393 INFO L225 Difference]: With dead ends: 36 [2020-11-28 03:00:55,393 INFO L226 Difference]: Without dead ends: 32 [2020-11-28 03:00:55,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:00:55,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-28 03:00:55,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 27. [2020-11-28 03:00:55,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:00:55,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-11-28 03:00:55,403 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 24 [2020-11-28 03:00:55,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:55,403 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-11-28 03:00:55,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:00:55,404 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-11-28 03:00:55,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:00:55,405 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:55,405 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:55,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:00:55,616 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:55,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:55,617 INFO L82 PathProgramCache]: Analyzing trace with hash 1047027442, now seen corresponding path program 4 times [2020-11-28 03:00:55,617 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:55,617 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19903060] [2020-11-28 03:00:55,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:55,626 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:00:55,626 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [758093768] [2020-11-28 03:00:55,626 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/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 [2020-11-28 03:00:55,719 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:00:55,719 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:00:55,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:00:55,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:55,814 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:00:55,814 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19903060] [2020-11-28 03:00:55,815 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:00:55,815 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [758093768] [2020-11-28 03:00:55,815 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:00:55,815 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-11-28 03:00:55,815 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923500158] [2020-11-28 03:00:55,816 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:00:55,816 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:55,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:00:55,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:00:55,817 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 9 states. [2020-11-28 03:00:55,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:00:55,989 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-11-28 03:00:55,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:00:55,991 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-11-28 03:00:55,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:00:55,992 INFO L225 Difference]: With dead ends: 49 [2020-11-28 03:00:55,992 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 03:00:55,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:00:55,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 03:00:55,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 29. [2020-11-28 03:00:55,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 03:00:55,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-11-28 03:00:55,997 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 26 [2020-11-28 03:00:55,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:00:55,997 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-11-28 03:00:55,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:00:55,998 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-11-28 03:00:55,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 03:00:55,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:00:55,998 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:00:56,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:00:56,199 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-28 03:00:56,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:00:56,199 INFO L82 PathProgramCache]: Analyzing trace with hash 155993684, now seen corresponding path program 5 times [2020-11-28 03:00:56,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:00:56,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12458894] [2020-11-28 03:00:56,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:00:56,206 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-28 03:00:56,207 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [436856073] [2020-11-28 03:00:56,207 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/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 [2020-11-28 03:00:56,518 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2020-11-28 03:00:56,518 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:00:56,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 29 conjunts are in the unsatisfiable core [2020-11-28 03:00:56,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:00:56,562 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2020-11-28 03:00:56,563 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:00:56,572 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:00:56,572 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:00:56,572 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:11 [2020-11-28 03:00:56,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-11-28 03:00:56,633 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 41 treesize of output 25 [2020-11-28 03:00:56,634 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:00:56,646 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:00:56,646 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:00:56,646 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:49, output treesize:32 [2020-11-28 03:00:56,770 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-28 03:00:56,770 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:00:56,811 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:00:56,813 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:00:56,870 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-11-28 03:00:56,870 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:00:57,006 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:00:57,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12458894] [2020-11-28 03:00:57,007 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-28 03:00:57,007 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [436856073] [2020-11-28 03:00:57,007 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:00:57,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-11-28 03:00:57,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757146910] [2020-11-28 03:00:57,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 03:00:57,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:00:57,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 03:00:57,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:00:57,010 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 14 states. [2020-11-28 03:01:00,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:00,455 INFO L93 Difference]: Finished difference Result 54 states and 60 transitions. [2020-11-28 03:01:00,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-28 03:01:00,456 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 28 [2020-11-28 03:01:00,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:00,456 INFO L225 Difference]: With dead ends: 54 [2020-11-28 03:01:00,456 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:01:00,457 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=125, Invalid=427, Unknown=0, NotChecked=0, Total=552 [2020-11-28 03:01:00,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:01:00,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:01:00,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:01:00,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:01:00,458 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-11-28 03:01:00,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:00,458 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:01:00,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 03:01:00,458 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:01:00,458 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:01:00,659 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:01:00,660 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:01:00,905 INFO L274 CegarLoopResult]: For program point L31(lines 31 33) no Hoare annotation was computed. [2020-11-28 03:01:00,905 INFO L274 CegarLoopResult]: For program point L31-1(lines 31 33) no Hoare annotation was computed. [2020-11-28 03:01:00,905 INFO L274 CegarLoopResult]: For program point L31-2(lines 31 33) no Hoare annotation was computed. [2020-11-28 03:01:00,905 INFO L274 CegarLoopResult]: For program point L52-2(lines 52 56) no Hoare annotation was computed. [2020-11-28 03:01:00,906 INFO L270 CegarLoopResult]: At program point L52-3(lines 52 56) the Hoare annotation is: (let ((.cse2 (<= 1 ULTIMATE.start_main_~count~0)) (.cse0 (= ULTIMATE.start_main_~sum~0 0)) (.cse1 (not (= |ULTIMATE.start_main_~#array2~0.base| |ULTIMATE.start_main_~#array1~0.base|))) (.cse3 (= (+ ULTIMATE.start_main_~num~0 1) 0))) (or (and .cse0 (<= ULTIMATE.start_main_~count~0 1) .cse1 .cse2 .cse3) (and .cse0 .cse2 (< 1 ~ARR_SIZE~0)) (and .cse0 (= ULTIMATE.start_main_~count~0 0) .cse1 .cse3))) [2020-11-28 03:01:00,906 INFO L274 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-11-28 03:01:00,906 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:01:00,906 INFO L274 CegarLoopResult]: For program point L32-2(line 32) no Hoare annotation was computed. [2020-11-28 03:01:00,906 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:01:00,906 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:01:00,906 INFO L274 CegarLoopResult]: For program point L32-4(line 32) no Hoare annotation was computed. [2020-11-28 03:01:00,906 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 29) no Hoare annotation was computed. [2020-11-28 03:01:00,907 INFO L274 CegarLoopResult]: For program point L74-2(lines 74 77) no Hoare annotation was computed. [2020-11-28 03:01:00,907 INFO L270 CegarLoopResult]: At program point L74-3(lines 74 77) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~sum~0 0)) (.cse1 (= ULTIMATE.start_main_~count~0 0)) (.cse2 (< 0 (div (+ ~ARR_SIZE~0 (- 1)) 2))) (.cse3 (< 0 ULTIMATE.start_main_~pivot~0)) (.cse4 (= ULTIMATE.start_assume_abort_if_not_~cond 1))) (or (and (<= ~ARR_SIZE~0 0) .cse0 .cse1) (and .cse0 .cse2 .cse1 .cse3 .cse4) (and .cse2 .cse3 (<= 1 ULTIMATE.start_main_~count~0) .cse4))) [2020-11-28 03:01:00,907 INFO L274 CegarLoopResult]: For program point L74-4(lines 74 77) no Hoare annotation was computed. [2020-11-28 03:01:00,907 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:01:00,907 INFO L274 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-11-28 03:01:00,907 INFO L274 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-11-28 03:01:00,907 INFO L274 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-11-28 03:01:00,907 INFO L274 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-11-28 03:01:00,907 INFO L274 CegarLoopResult]: For program point L34-3(line 34) no Hoare annotation was computed. [2020-11-28 03:01:00,907 INFO L274 CegarLoopResult]: For program point L59-1(lines 41 81) no Hoare annotation was computed. [2020-11-28 03:01:00,908 INFO L274 CegarLoopResult]: For program point L59-2(lines 59 72) no Hoare annotation was computed. [2020-11-28 03:01:00,908 INFO L277 CegarLoopResult]: At program point L80(lines 40 81) the Hoare annotation is: true [2020-11-28 03:01:00,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:01:00 BoogieIcfgContainer [2020-11-28 03:01:00,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:01:00,924 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:01:00,924 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:01:00,924 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:01:00,925 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:00:49" (3/4) ... [2020-11-28 03:01:00,927 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:01:00,936 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-11-28 03:01:00,936 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-28 03:01:00,936 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:01:00,937 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:01:01,008 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_05cd811d-1836-4853-a41e-74f6cdafec74/bin/uautomizer/witness.graphml [2020-11-28 03:01:01,009 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:01:01,010 INFO L168 Benchmark]: Toolchain (without parser) took 14475.39 ms. Allocated memory was 123.7 MB in the beginning and 180.4 MB in the end (delta: 56.6 MB). Free memory was 94.0 MB in the beginning and 121.8 MB in the end (delta: -27.8 MB). Peak memory consumption was 29.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:01,010 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 79.7 MB. Free memory was 38.4 MB in the beginning and 38.3 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:01,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.02 ms. Allocated memory is still 123.7 MB. Free memory was 93.6 MB in the beginning and 99.1 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:01,011 INFO L168 Benchmark]: Boogie Procedure Inliner took 36.22 ms. Allocated memory is still 123.7 MB. Free memory was 99.1 MB in the beginning and 97.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:01,012 INFO L168 Benchmark]: Boogie Preprocessor took 25.09 ms. Allocated memory is still 123.7 MB. Free memory was 97.3 MB in the beginning and 96.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:01,012 INFO L168 Benchmark]: RCFGBuilder took 2771.18 ms. Allocated memory is still 123.7 MB. Free memory was 95.8 MB in the beginning and 80.0 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:01,013 INFO L168 Benchmark]: TraceAbstraction took 11292.59 ms. Allocated memory was 123.7 MB in the beginning and 180.4 MB in the end (delta: 56.6 MB). Free memory was 79.4 MB in the beginning and 124.9 MB in the end (delta: -45.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:01,013 INFO L168 Benchmark]: Witness Printer took 84.92 ms. Allocated memory is still 180.4 MB. Free memory was 124.9 MB in the beginning and 121.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:01,025 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 79.7 MB. Free memory was 38.4 MB in the beginning and 38.3 MB in the end (delta: 71.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 257.02 ms. Allocated memory is still 123.7 MB. Free memory was 93.6 MB in the beginning and 99.1 MB in the end (delta: -5.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 36.22 ms. Allocated memory is still 123.7 MB. Free memory was 99.1 MB in the beginning and 97.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.09 ms. Allocated memory is still 123.7 MB. Free memory was 97.3 MB in the beginning and 96.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2771.18 ms. Allocated memory is still 123.7 MB. Free memory was 95.8 MB in the beginning and 80.0 MB in the end (delta: 15.8 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 11292.59 ms. Allocated memory was 123.7 MB in the beginning and 180.4 MB in the end (delta: 56.6 MB). Free memory was 79.4 MB in the beginning and 124.9 MB in the end (delta: -45.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. * Witness Printer took 84.92 ms. Allocated memory is still 180.4 MB. Free memory was 124.9 MB in the beginning and 121.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 29]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 40]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 52]: Loop Invariant Derived loop invariant: (((((sum == 0 && count <= 1) && !(array2 == array1)) && 1 <= count) && num + 1 == 0) || ((sum == 0 && 1 <= count) && 1 < ARR_SIZE)) || (((sum == 0 && count == 0) && !(array2 == array1)) && num + 1 == 0) - InvariantResult [Line: 74]: Loop Invariant Derived loop invariant: (((ARR_SIZE <= 0 && sum == 0) && count == 0) || ((((sum == 0 && 0 < (ARR_SIZE + -1) / 2) && count == 0) && 0 < pivot) && cond == 1)) || (((0 < (ARR_SIZE + -1) / 2 && 0 < pivot) && 1 <= count) && cond == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.9s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 127 SDtfs, 240 SDslu, 291 SDs, 0 SdLazy, 491 SolverSat, 91 SolverUnsat, 2 SolverUnknown, 0 SolverNotchecked, 5.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 158 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 18 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 22 NumberOfFragments, 95 HoareAnnotationTreeSize, 3 FomulaSimplifications, 499 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 21 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 165 NumberOfCodeBlocks, 165 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 157 ConstructedInterpolants, 0 QuantifiedInterpolants, 17331 SizeOfPredicates, 36 NumberOfNonLiveVariables, 580 ConjunctsInSsa, 70 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 17/47 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...