./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for overflows Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! overflow) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash cf39454d83b4ec00341bd0b620b0fa6b2321ce21 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 03:01:01,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:01:01,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:01:01,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:01:01,266 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:01:01,272 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:01:01,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:01:01,283 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:01:01,286 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:01:01,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:01:01,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:01:01,296 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:01:01,296 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:01:01,300 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:01:01,302 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:01:01,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:01:01,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:01:01,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:01:01,313 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:01:01,321 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:01:01,323 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:01:01,324 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:01:01,327 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:01:01,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:01:01,337 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:01:01,338 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:01:01,339 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:01:01,341 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:01:01,342 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:01:01,343 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:01:01,344 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:01:01,345 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:01:01,348 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:01:01,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:01:01,351 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:01:01,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:01:01,352 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:01:01,353 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:01:01,353 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:01:01,356 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:01:01,357 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:01:01,358 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 03:01:01,403 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:01:01,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:01:01,406 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:01:01,407 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:01:01,407 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:01:01,407 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:01:01,408 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:01:01,408 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:01:01,408 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:01:01,408 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:01:01,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:01:01,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:01:01,410 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 03:01:01,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:01:01,411 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:01:01,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:01:01,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:01:01,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:01:01,412 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:01:01,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:01:01,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:01:01,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:01:01,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:01:01,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:01:01,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:01:01,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:01:01,414 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:01:01,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:01:01,415 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_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf39454d83b4ec00341bd0b620b0fa6b2321ce21 [2020-11-28 03:01:01,759 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:01:01,786 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:01:01,788 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:01:01,790 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:01:01,791 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:01:01,792 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2020-11-28 03:01:01,883 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/bin/uautomizer/data/9bdb038e1/ee68b5d043c3487ea509278e2b4eb1a2/FLAGe59afb196 [2020-11-28 03:01:02,408 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:01:02,410 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/sv-benchmarks/c/termination-crafted/Arrays01-EquivalentConstantIndices-1.c [2020-11-28 03:01:02,424 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/bin/uautomizer/data/9bdb038e1/ee68b5d043c3487ea509278e2b4eb1a2/FLAGe59afb196 [2020-11-28 03:01:02,754 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/bin/uautomizer/data/9bdb038e1/ee68b5d043c3487ea509278e2b4eb1a2 [2020-11-28 03:01:02,756 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:01:02,759 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:01:02,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:01:02,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:01:02,768 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:01:02,770 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:02" (1/1) ... [2020-11-28 03:01:02,773 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c2b92f3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:02, skipping insertion in model container [2020-11-28 03:01:02,773 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:01:02" (1/1) ... [2020-11-28 03:01:02,784 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:01:02,801 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:01:02,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:01:03,001 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:01:03,047 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:01:03,067 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:01:03,069 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:03 WrapperNode [2020-11-28 03:01:03,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:01:03,072 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:01:03,072 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:01:03,072 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:01:03,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:03" (1/1) ... [2020-11-28 03:01:03,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:03" (1/1) ... [2020-11-28 03:01:03,112 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:01:03,115 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:01:03,116 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:01:03,116 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:01:03,134 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:03" (1/1) ... [2020-11-28 03:01:03,134 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:03" (1/1) ... [2020-11-28 03:01:03,150 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:03" (1/1) ... [2020-11-28 03:01:03,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:03" (1/1) ... [2020-11-28 03:01:03,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:03" (1/1) ... [2020-11-28 03:01:03,160 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:03" (1/1) ... [2020-11-28 03:01:03,169 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:03" (1/1) ... [2020-11-28 03:01:03,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:01:03,176 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:01:03,177 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:01:03,177 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:01:03,178 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:03" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 03:01:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-28 03:01:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:01:03,247 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:01:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-28 03:01:03,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-28 03:01:03,248 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-28 03:01:03,424 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:01:03,425 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:01:03,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:03 BoogieIcfgContainer [2020-11-28 03:01:03,426 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:01:03,428 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:01:03,428 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:01:03,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:01:03,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:01:02" (1/3) ... [2020-11-28 03:01:03,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdae9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:01:03, skipping insertion in model container [2020-11-28 03:01:03,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:01:03" (2/3) ... [2020-11-28 03:01:03,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cdae9d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:01:03, skipping insertion in model container [2020-11-28 03:01:03,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:03" (3/3) ... [2020-11-28 03:01:03,451 INFO L111 eAbstractionObserver]: Analyzing ICFG Arrays01-EquivalentConstantIndices-1.c [2020-11-28 03:01:03,462 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:01:03,466 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 03:01:03,478 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:01:03,501 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:01:03,513 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:01:03,513 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:01:03,514 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:01:03,514 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:01:03,514 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:01:03,514 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:01:03,514 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:01:03,527 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-11-28 03:01:03,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 03:01:03,533 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:03,533 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 03:01:03,534 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:03,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:03,539 INFO L82 PathProgramCache]: Analyzing trace with hash 28698728, now seen corresponding path program 1 times [2020-11-28 03:01:03,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:03,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412355228] [2020-11-28 03:01:03,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:03,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:03,773 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 03:01:03,773 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412355228] [2020-11-28 03:01:03,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:01:03,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:01:03,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247600285] [2020-11-28 03:01:03,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:01:03,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:03,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:01:03,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:01:03,798 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 4 states. [2020-11-28 03:01:03,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:03,886 INFO L93 Difference]: Finished difference Result 34 states and 40 transitions. [2020-11-28 03:01:03,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:01:03,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 5 [2020-11-28 03:01:03,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:03,895 INFO L225 Difference]: With dead ends: 34 [2020-11-28 03:01:03,896 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 03:01:03,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 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 03:01:03,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 03:01:03,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-11-28 03:01:03,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:01:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-28 03:01:03,936 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 5 [2020-11-28 03:01:03,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:03,937 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-28 03:01:03,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:01:03,937 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-28 03:01:03,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-11-28 03:01:03,938 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:03,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1] [2020-11-28 03:01:03,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:01:03,939 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:03,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:03,940 INFO L82 PathProgramCache]: Analyzing trace with hash -363792156, now seen corresponding path program 1 times [2020-11-28 03:01:03,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:03,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950319404] [2020-11-28 03:01:03,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:03,994 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-28 03:01:03,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950319404] [2020-11-28 03:01:03,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:01:03,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:01:03,995 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009458336] [2020-11-28 03:01:03,996 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:01:03,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:03,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:01:03,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:01:03,998 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2020-11-28 03:01:04,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:04,038 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-11-28 03:01:04,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:01:04,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-11-28 03:01:04,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:04,039 INFO L225 Difference]: With dead ends: 18 [2020-11-28 03:01:04,039 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 03:01:04,040 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 03:01:04,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 03:01:04,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 03:01:04,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:01:04,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-28 03:01:04,045 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 9 [2020-11-28 03:01:04,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:04,045 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-28 03:01:04,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:01:04,045 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-28 03:01:04,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:01:04,046 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:04,046 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:04,046 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:01:04,047 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:04,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:04,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1607296535, now seen corresponding path program 1 times [2020-11-28 03:01:04,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:04,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1159582818] [2020-11-28 03:01:04,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:04,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:04,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1159582818] [2020-11-28 03:01:04,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [504706466] [2020-11-28 03:01:04,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 03:01:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:04,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:01:04,185 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:04,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:04,255 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:04,256 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-11-28 03:01:04,256 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387088776] [2020-11-28 03:01:04,257 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:01:04,257 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:04,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:01:04,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:01:04,258 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 7 states. [2020-11-28 03:01:04,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:04,374 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-11-28 03:01:04,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:01:04,375 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-11-28 03:01:04,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:04,376 INFO L225 Difference]: With dead ends: 28 [2020-11-28 03:01:04,377 INFO L226 Difference]: Without dead ends: 22 [2020-11-28 03:01:04,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:01:04,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-11-28 03:01:04,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2020-11-28 03:01:04,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:01:04,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-11-28 03:01:04,382 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2020-11-28 03:01:04,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:04,382 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-11-28 03:01:04,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:01:04,383 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-11-28 03:01:04,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:01:04,383 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:04,384 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2020-11-28 03:01:04,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-28 03:01:04,598 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:04,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:04,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1607345098, now seen corresponding path program 1 times [2020-11-28 03:01:04,599 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:04,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217695636] [2020-11-28 03:01:04,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:04,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:04,714 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:04,714 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217695636] [2020-11-28 03:01:04,715 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2028925901] [2020-11-28 03:01:04,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 03:01:04,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:04,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:01:04,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:04,807 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:04,808 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-28 03:01:04,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2020-11-28 03:01:04,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536857830] [2020-11-28 03:01:04,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:01:04,809 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:04,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:01:04,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:01:04,810 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 4 states. [2020-11-28 03:01:04,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:04,859 INFO L93 Difference]: Finished difference Result 18 states and 19 transitions. [2020-11-28 03:01:04,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:01:04,861 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:01:04,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:04,862 INFO L225 Difference]: With dead ends: 18 [2020-11-28 03:01:04,862 INFO L226 Difference]: Without dead ends: 17 [2020-11-28 03:01:04,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:01:04,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-11-28 03:01:04,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-11-28 03:01:04,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:01:04,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-11-28 03:01:04,867 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 10 [2020-11-28 03:01:04,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:04,868 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-11-28 03:01:04,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:01:04,868 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-11-28 03:01:04,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-28 03:01:04,869 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:04,869 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:05,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:01:05,094 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:05,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:05,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1053474021, now seen corresponding path program 2 times [2020-11-28 03:01:05,095 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:05,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070109989] [2020-11-28 03:01:05,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:05,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:05,185 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:05,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070109989] [2020-11-28 03:01:05,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [469230228] [2020-11-28 03:01:05,186 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 03:01:05,231 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:01:05,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:05,232 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:01:05,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:05,298 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:05,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:05,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 9 [2020-11-28 03:01:05,299 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114042500] [2020-11-28 03:01:05,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:01:05,300 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:05,300 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:01:05,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:01:05,301 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 9 states. [2020-11-28 03:01:05,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:05,388 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-11-28 03:01:05,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:01:05,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-11-28 03:01:05,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:05,392 INFO L225 Difference]: With dead ends: 30 [2020-11-28 03:01:05,392 INFO L226 Difference]: Without dead ends: 24 [2020-11-28 03:01:05,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:01:05,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-28 03:01:05,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 21. [2020-11-28 03:01:05,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-11-28 03:01:05,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2020-11-28 03:01:05,398 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 14 [2020-11-28 03:01:05,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:05,399 INFO L481 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2020-11-28 03:01:05,399 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:01:05,399 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2020-11-28 03:01:05,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:01:05,400 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:05,400 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:05,625 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:01:05,626 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:05,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:05,627 INFO L82 PathProgramCache]: Analyzing trace with hash 1100938783, now seen corresponding path program 3 times [2020-11-28 03:01:05,627 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:05,627 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740726030] [2020-11-28 03:01:05,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:05,748 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:05,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740726030] [2020-11-28 03:01:05,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [864678305] [2020-11-28 03:01:05,749 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 03:01:05,792 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-28 03:01:05,792 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:05,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:01:05,795 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:05,859 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:05,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:05,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-11-28 03:01:05,860 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930324677] [2020-11-28 03:01:05,861 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:01:05,861 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:05,862 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:01:05,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:01:05,862 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 11 states. [2020-11-28 03:01:05,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:05,948 INFO L93 Difference]: Finished difference Result 34 states and 36 transitions. [2020-11-28 03:01:05,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:01:05,949 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 18 [2020-11-28 03:01:05,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:05,950 INFO L225 Difference]: With dead ends: 34 [2020-11-28 03:01:05,950 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 03:01:05,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:01:05,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 03:01:05,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2020-11-28 03:01:05,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 03:01:05,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2020-11-28 03:01:05,957 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 18 [2020-11-28 03:01:05,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:05,957 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2020-11-28 03:01:05,957 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:01:05,957 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2020-11-28 03:01:05,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-11-28 03:01:05,958 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:05,958 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:06,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:01:06,182 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:06,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:06,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1326737629, now seen corresponding path program 4 times [2020-11-28 03:01:06,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:06,183 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403883734] [2020-11-28 03:01:06,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:06,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:06,308 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:06,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403883734] [2020-11-28 03:01:06,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [211649376] [2020-11-28 03:01:06,308 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 03:01:06,364 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:01:06,364 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:06,365 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:01:06,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:06,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:06,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 13 [2020-11-28 03:01:06,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711502137] [2020-11-28 03:01:06,425 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:01:06,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:06,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:01:06,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:01:06,426 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand 13 states. [2020-11-28 03:01:06,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:06,560 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-11-28 03:01:06,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 03:01:06,560 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2020-11-28 03:01:06,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:06,561 INFO L225 Difference]: With dead ends: 38 [2020-11-28 03:01:06,561 INFO L226 Difference]: Without dead ends: 32 [2020-11-28 03:01:06,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=88, Invalid=184, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:01:06,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-11-28 03:01:06,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-11-28 03:01:06,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-11-28 03:01:06,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-11-28 03:01:06,568 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 22 [2020-11-28 03:01:06,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:06,568 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-11-28 03:01:06,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:01:06,568 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-11-28 03:01:06,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-11-28 03:01:06,569 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:06,570 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:06,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2020-11-28 03:01:06,786 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:06,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:06,786 INFO L82 PathProgramCache]: Analyzing trace with hash 108793383, now seen corresponding path program 5 times [2020-11-28 03:01:06,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:06,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332732539] [2020-11-28 03:01:06,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:06,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:06,977 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:06,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332732539] [2020-11-28 03:01:06,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [641564459] [2020-11-28 03:01:06,978 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 [2020-11-28 03:01:07,028 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-28 03:01:07,028 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:07,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:01:07,031 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:07,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:07,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 15 [2020-11-28 03:01:07,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031859858] [2020-11-28 03:01:07,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-28 03:01:07,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:07,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-28 03:01:07,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:01:07,138 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 15 states. [2020-11-28 03:01:07,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:07,296 INFO L93 Difference]: Finished difference Result 42 states and 44 transitions. [2020-11-28 03:01:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:01:07,306 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 26 [2020-11-28 03:01:07,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:07,307 INFO L225 Difference]: With dead ends: 42 [2020-11-28 03:01:07,307 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 03:01:07,308 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=120, Invalid=260, Unknown=0, NotChecked=0, Total=380 [2020-11-28 03:01:07,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 03:01:07,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 33. [2020-11-28 03:01:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 03:01:07,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-11-28 03:01:07,313 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2020-11-28 03:01:07,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:07,313 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-11-28 03:01:07,313 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-28 03:01:07,313 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-11-28 03:01:07,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:01:07,314 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:07,314 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:07,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:01:07,515 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:07,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:07,516 INFO L82 PathProgramCache]: Analyzing trace with hash -1590598869, now seen corresponding path program 6 times [2020-11-28 03:01:07,516 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:07,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587018240] [2020-11-28 03:01:07,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:07,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:07,748 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:07,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587018240] [2020-11-28 03:01:07,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1579519477] [2020-11-28 03:01:07,749 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 [2020-11-28 03:01:07,816 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-28 03:01:07,816 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:07,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:01:07,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:07,873 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:07,873 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:07,873 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 17 [2020-11-28 03:01:07,874 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461805695] [2020-11-28 03:01:07,874 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-28 03:01:07,874 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:07,875 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-28 03:01:07,875 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:01:07,875 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 17 states. [2020-11-28 03:01:08,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:08,071 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2020-11-28 03:01:08,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 03:01:08,072 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 30 [2020-11-28 03:01:08,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:08,072 INFO L225 Difference]: With dead ends: 46 [2020-11-28 03:01:08,072 INFO L226 Difference]: Without dead ends: 40 [2020-11-28 03:01:08,073 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-11-28 03:01:08,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-11-28 03:01:08,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-11-28 03:01:08,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 03:01:08,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2020-11-28 03:01:08,078 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 30 [2020-11-28 03:01:08,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:08,078 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2020-11-28 03:01:08,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-28 03:01:08,078 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2020-11-28 03:01:08,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-11-28 03:01:08,079 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:08,080 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:08,280 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:01:08,280 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:08,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:08,281 INFO L82 PathProgramCache]: Analyzing trace with hash -2022926801, now seen corresponding path program 7 times [2020-11-28 03:01:08,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:08,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487466105] [2020-11-28 03:01:08,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:08,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:08,548 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:08,548 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487466105] [2020-11-28 03:01:08,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777451033] [2020-11-28 03:01:08,549 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 [2020-11-28 03:01:08,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:08,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-28 03:01:08,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:08,675 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 91 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:08,675 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:08,676 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 19 [2020-11-28 03:01:08,676 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123011641] [2020-11-28 03:01:08,676 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-28 03:01:08,676 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:08,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-28 03:01:08,677 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2020-11-28 03:01:08,677 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 19 states. [2020-11-28 03:01:08,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:08,896 INFO L93 Difference]: Finished difference Result 50 states and 52 transitions. [2020-11-28 03:01:08,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-28 03:01:08,896 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 34 [2020-11-28 03:01:08,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:08,897 INFO L225 Difference]: With dead ends: 50 [2020-11-28 03:01:08,897 INFO L226 Difference]: Without dead ends: 44 [2020-11-28 03:01:08,898 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=199, Invalid=451, Unknown=0, NotChecked=0, Total=650 [2020-11-28 03:01:08,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-11-28 03:01:08,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-11-28 03:01:08,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-11-28 03:01:08,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-11-28 03:01:08,903 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 34 [2020-11-28 03:01:08,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:08,903 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-11-28 03:01:08,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-28 03:01:08,903 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-11-28 03:01:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-28 03:01:08,904 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:08,905 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:09,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-11-28 03:01:09,105 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:09,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:09,106 INFO L82 PathProgramCache]: Analyzing trace with hash -1492211917, now seen corresponding path program 8 times [2020-11-28 03:01:09,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:09,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278486933] [2020-11-28 03:01:09,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:09,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:09,454 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:09,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278486933] [2020-11-28 03:01:09,454 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419483762] [2020-11-28 03:01:09,455 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 [2020-11-28 03:01:09,512 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:01:09,512 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:09,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 105 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-28 03:01:09,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:09,649 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 0 proven. 120 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:09,651 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:09,652 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 21 [2020-11-28 03:01:09,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783916931] [2020-11-28 03:01:09,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-28 03:01:09,656 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:09,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-28 03:01:09,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=300, Unknown=0, NotChecked=0, Total=420 [2020-11-28 03:01:09,658 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 21 states. [2020-11-28 03:01:09,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:09,980 INFO L93 Difference]: Finished difference Result 54 states and 56 transitions. [2020-11-28 03:01:09,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-28 03:01:09,982 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 38 [2020-11-28 03:01:09,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:09,983 INFO L225 Difference]: With dead ends: 54 [2020-11-28 03:01:09,983 INFO L226 Difference]: Without dead ends: 48 [2020-11-28 03:01:09,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=246, Invalid=566, Unknown=0, NotChecked=0, Total=812 [2020-11-28 03:01:09,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-28 03:01:09,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-11-28 03:01:09,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 03:01:09,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 46 transitions. [2020-11-28 03:01:09,996 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 46 transitions. Word has length 38 [2020-11-28 03:01:09,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:09,997 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 46 transitions. [2020-11-28 03:01:09,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-28 03:01:09,997 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 46 transitions. [2020-11-28 03:01:09,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-11-28 03:01:09,998 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:09,999 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:10,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:01:10,222 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:10,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:10,222 INFO L82 PathProgramCache]: Analyzing trace with hash 360224311, now seen corresponding path program 9 times [2020-11-28 03:01:10,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:10,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470011047] [2020-11-28 03:01:10,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:10,599 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:10,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470011047] [2020-11-28 03:01:10,599 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [894580220] [2020-11-28 03:01:10,602 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 [2020-11-28 03:01:10,699 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-28 03:01:10,699 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:10,701 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-28 03:01:10,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:10,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:10,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 21] total 23 [2020-11-28 03:01:10,781 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882168189] [2020-11-28 03:01:10,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-11-28 03:01:10,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:10,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-11-28 03:01:10,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-11-28 03:01:10,784 INFO L87 Difference]: Start difference. First operand 45 states and 46 transitions. Second operand 23 states. [2020-11-28 03:01:11,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:11,065 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2020-11-28 03:01:11,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-28 03:01:11,066 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 42 [2020-11-28 03:01:11,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:11,066 INFO L225 Difference]: With dead ends: 58 [2020-11-28 03:01:11,067 INFO L226 Difference]: Without dead ends: 52 [2020-11-28 03:01:11,067 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=298, Invalid=694, Unknown=0, NotChecked=0, Total=992 [2020-11-28 03:01:11,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-28 03:01:11,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 49. [2020-11-28 03:01:11,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-11-28 03:01:11,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2020-11-28 03:01:11,072 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 42 [2020-11-28 03:01:11,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:11,073 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2020-11-28 03:01:11,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-11-28 03:01:11,073 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2020-11-28 03:01:11,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-11-28 03:01:11,074 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:11,074 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:11,275 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:01:11,275 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:11,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:11,276 INFO L82 PathProgramCache]: Analyzing trace with hash 1334534971, now seen corresponding path program 10 times [2020-11-28 03:01:11,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:11,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324107778] [2020-11-28 03:01:11,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:11,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:11,720 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:11,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324107778] [2020-11-28 03:01:11,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285484397] [2020-11-28 03:01:11,733 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 [2020-11-28 03:01:11,796 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:01:11,797 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:11,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-28 03:01:11,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:11,899 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 0 proven. 190 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:11,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:11,900 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 25 [2020-11-28 03:01:11,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434541002] [2020-11-28 03:01:11,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-11-28 03:01:11,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:11,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-11-28 03:01:11,902 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=432, Unknown=0, NotChecked=0, Total=600 [2020-11-28 03:01:11,902 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand 25 states. [2020-11-28 03:01:12,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:12,314 INFO L93 Difference]: Finished difference Result 62 states and 64 transitions. [2020-11-28 03:01:12,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-11-28 03:01:12,314 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 46 [2020-11-28 03:01:12,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:12,315 INFO L225 Difference]: With dead ends: 62 [2020-11-28 03:01:12,316 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 03:01:12,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 206 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=355, Invalid=835, Unknown=0, NotChecked=0, Total=1190 [2020-11-28 03:01:12,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 03:01:12,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2020-11-28 03:01:12,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-11-28 03:01:12,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-11-28 03:01:12,329 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 46 [2020-11-28 03:01:12,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:12,329 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-11-28 03:01:12,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-11-28 03:01:12,330 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-11-28 03:01:12,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-28 03:01:12,331 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:12,331 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:12,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2020-11-28 03:01:12,532 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:12,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:12,532 INFO L82 PathProgramCache]: Analyzing trace with hash 2041056831, now seen corresponding path program 11 times [2020-11-28 03:01:12,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:12,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2033454830] [2020-11-28 03:01:12,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:12,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:13,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2033454830] [2020-11-28 03:01:13,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058451524] [2020-11-28 03:01:13,028 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 [2020-11-28 03:01:13,134 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-28 03:01:13,134 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:13,136 INFO L263 TraceCheckSpWp]: Trace formula consists of 135 conjuncts, 24 conjunts are in the unsatisfiable core [2020-11-28 03:01:13,139 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:13,230 INFO L134 CoverageAnalysis]: Checked inductivity of 231 backedges. 0 proven. 231 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:13,234 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:13,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 25] total 27 [2020-11-28 03:01:13,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707535676] [2020-11-28 03:01:13,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-11-28 03:01:13,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:13,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-11-28 03:01:13,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2020-11-28 03:01:13,244 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 27 states. [2020-11-28 03:01:13,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:13,626 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2020-11-28 03:01:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-11-28 03:01:13,626 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 50 [2020-11-28 03:01:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:13,627 INFO L225 Difference]: With dead ends: 66 [2020-11-28 03:01:13,627 INFO L226 Difference]: Without dead ends: 60 [2020-11-28 03:01:13,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=417, Invalid=989, Unknown=0, NotChecked=0, Total=1406 [2020-11-28 03:01:13,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-11-28 03:01:13,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2020-11-28 03:01:13,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:01:13,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 58 transitions. [2020-11-28 03:01:13,634 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 58 transitions. Word has length 50 [2020-11-28 03:01:13,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:13,634 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 58 transitions. [2020-11-28 03:01:13,635 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-11-28 03:01:13,635 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 58 transitions. [2020-11-28 03:01:13,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-11-28 03:01:13,637 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:13,637 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:13,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-11-28 03:01:13,838 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:13,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:13,838 INFO L82 PathProgramCache]: Analyzing trace with hash -1615882429, now seen corresponding path program 12 times [2020-11-28 03:01:13,839 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:13,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015685577] [2020-11-28 03:01:13,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:13,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:14,405 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:14,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015685577] [2020-11-28 03:01:14,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945787466] [2020-11-28 03:01:14,406 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 [2020-11-28 03:01:14,648 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-28 03:01:14,648 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:14,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 26 conjunts are in the unsatisfiable core [2020-11-28 03:01:14,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:14,745 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 276 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:14,745 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:14,746 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 29 [2020-11-28 03:01:14,746 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871307527] [2020-11-28 03:01:14,746 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-11-28 03:01:14,746 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:14,747 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-11-28 03:01:14,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=588, Unknown=0, NotChecked=0, Total=812 [2020-11-28 03:01:14,748 INFO L87 Difference]: Start difference. First operand 57 states and 58 transitions. Second operand 29 states. [2020-11-28 03:01:15,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:15,169 INFO L93 Difference]: Finished difference Result 70 states and 72 transitions. [2020-11-28 03:01:15,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-11-28 03:01:15,169 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 54 [2020-11-28 03:01:15,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:15,170 INFO L225 Difference]: With dead ends: 70 [2020-11-28 03:01:15,170 INFO L226 Difference]: Without dead ends: 64 [2020-11-28 03:01:15,171 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=484, Invalid=1156, Unknown=0, NotChecked=0, Total=1640 [2020-11-28 03:01:15,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-11-28 03:01:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 61. [2020-11-28 03:01:15,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-11-28 03:01:15,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-11-28 03:01:15,178 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 54 [2020-11-28 03:01:15,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:15,178 INFO L481 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-11-28 03:01:15,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-11-28 03:01:15,178 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-11-28 03:01:15,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-28 03:01:15,180 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:15,180 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:15,395 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-28 03:01:15,395 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:15,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:15,396 INFO L82 PathProgramCache]: Analyzing trace with hash -184353209, now seen corresponding path program 13 times [2020-11-28 03:01:15,396 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:15,396 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585353550] [2020-11-28 03:01:15,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:15,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:15,826 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:15,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585353550] [2020-11-28 03:01:15,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395077565] [2020-11-28 03:01:15,826 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 [2020-11-28 03:01:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:15,873 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 28 conjunts are in the unsatisfiable core [2020-11-28 03:01:15,876 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:15,965 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 0 proven. 325 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:15,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:15,965 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 29] total 31 [2020-11-28 03:01:15,965 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866587715] [2020-11-28 03:01:15,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-11-28 03:01:15,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:15,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-11-28 03:01:15,970 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=675, Unknown=0, NotChecked=0, Total=930 [2020-11-28 03:01:15,970 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 31 states. [2020-11-28 03:01:16,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:16,402 INFO L93 Difference]: Finished difference Result 74 states and 76 transitions. [2020-11-28 03:01:16,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-11-28 03:01:16,403 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 58 [2020-11-28 03:01:16,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:16,403 INFO L225 Difference]: With dead ends: 74 [2020-11-28 03:01:16,403 INFO L226 Difference]: Without dead ends: 68 [2020-11-28 03:01:16,404 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=556, Invalid=1336, Unknown=0, NotChecked=0, Total=1892 [2020-11-28 03:01:16,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-28 03:01:16,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2020-11-28 03:01:16,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-28 03:01:16,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-11-28 03:01:16,410 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 58 [2020-11-28 03:01:16,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:16,410 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-11-28 03:01:16,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-11-28 03:01:16,410 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-11-28 03:01:16,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-11-28 03:01:16,411 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:16,412 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:16,637 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:01:16,638 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:16,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:16,638 INFO L82 PathProgramCache]: Analyzing trace with hash 344146763, now seen corresponding path program 14 times [2020-11-28 03:01:16,638 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:16,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [228098305] [2020-11-28 03:01:16,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:16,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:17,361 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:17,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [228098305] [2020-11-28 03:01:17,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [321153385] [2020-11-28 03:01:17,362 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 [2020-11-28 03:01:17,431 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:01:17,431 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:17,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 30 conjunts are in the unsatisfiable core [2020-11-28 03:01:17,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:17,527 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:17,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:17,528 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 33 [2020-11-28 03:01:17,528 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104670721] [2020-11-28 03:01:17,529 INFO L461 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-11-28 03:01:17,529 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:17,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-11-28 03:01:17,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=288, Invalid=768, Unknown=0, NotChecked=0, Total=1056 [2020-11-28 03:01:17,531 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 33 states. [2020-11-28 03:01:18,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:18,018 INFO L93 Difference]: Finished difference Result 78 states and 80 transitions. [2020-11-28 03:01:18,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-11-28 03:01:18,019 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 62 [2020-11-28 03:01:18,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:18,020 INFO L225 Difference]: With dead ends: 78 [2020-11-28 03:01:18,020 INFO L226 Difference]: Without dead ends: 72 [2020-11-28 03:01:18,022 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=633, Invalid=1529, Unknown=0, NotChecked=0, Total=2162 [2020-11-28 03:01:18,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-11-28 03:01:18,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 69. [2020-11-28 03:01:18,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-11-28 03:01:18,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 70 transitions. [2020-11-28 03:01:18,028 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 70 transitions. Word has length 62 [2020-11-28 03:01:18,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:18,028 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 70 transitions. [2020-11-28 03:01:18,028 INFO L482 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-11-28 03:01:18,029 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 70 transitions. [2020-11-28 03:01:18,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-11-28 03:01:18,030 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:18,030 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:18,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-28 03:01:18,258 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:18,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:18,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1083270735, now seen corresponding path program 15 times [2020-11-28 03:01:18,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:18,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576231057] [2020-11-28 03:01:18,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:18,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:18,836 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:18,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576231057] [2020-11-28 03:01:18,837 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114744656] [2020-11-28 03:01:18,837 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 [2020-11-28 03:01:18,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-28 03:01:18,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:18,984 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 32 conjunts are in the unsatisfiable core [2020-11-28 03:01:18,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:19,064 INFO L134 CoverageAnalysis]: Checked inductivity of 435 backedges. 0 proven. 435 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:19,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:19,065 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 33] total 35 [2020-11-28 03:01:19,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430911890] [2020-11-28 03:01:19,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-11-28 03:01:19,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:19,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-11-28 03:01:19,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=323, Invalid=867, Unknown=0, NotChecked=0, Total=1190 [2020-11-28 03:01:19,067 INFO L87 Difference]: Start difference. First operand 69 states and 70 transitions. Second operand 35 states. [2020-11-28 03:01:19,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:19,534 INFO L93 Difference]: Finished difference Result 82 states and 84 transitions. [2020-11-28 03:01:19,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-11-28 03:01:19,534 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 66 [2020-11-28 03:01:19,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:19,535 INFO L225 Difference]: With dead ends: 82 [2020-11-28 03:01:19,535 INFO L226 Difference]: Without dead ends: 76 [2020-11-28 03:01:19,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 426 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=715, Invalid=1735, Unknown=0, NotChecked=0, Total=2450 [2020-11-28 03:01:19,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-28 03:01:19,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 73. [2020-11-28 03:01:19,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-11-28 03:01:19,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-11-28 03:01:19,550 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 66 [2020-11-28 03:01:19,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:19,551 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-11-28 03:01:19,551 INFO L482 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-11-28 03:01:19,551 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-11-28 03:01:19,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-28 03:01:19,552 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:19,552 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:19,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-11-28 03:01:19,752 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:19,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:19,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1559337133, now seen corresponding path program 16 times [2020-11-28 03:01:19,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:19,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38198574] [2020-11-28 03:01:19,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:20,381 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:20,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38198574] [2020-11-28 03:01:20,382 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697475622] [2020-11-28 03:01:20,382 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 [2020-11-28 03:01:20,449 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:01:20,450 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:20,451 INFO L263 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 34 conjunts are in the unsatisfiable core [2020-11-28 03:01:20,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:20,592 INFO L134 CoverageAnalysis]: Checked inductivity of 496 backedges. 0 proven. 496 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:20,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:20,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35, 35] total 37 [2020-11-28 03:01:20,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878476216] [2020-11-28 03:01:20,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-11-28 03:01:20,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:20,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-11-28 03:01:20,596 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=360, Invalid=972, Unknown=0, NotChecked=0, Total=1332 [2020-11-28 03:01:20,596 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 37 states. [2020-11-28 03:01:21,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:21,110 INFO L93 Difference]: Finished difference Result 86 states and 88 transitions. [2020-11-28 03:01:21,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-11-28 03:01:21,110 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 70 [2020-11-28 03:01:21,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:21,111 INFO L225 Difference]: With dead ends: 86 [2020-11-28 03:01:21,111 INFO L226 Difference]: Without dead ends: 80 [2020-11-28 03:01:21,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 479 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=802, Invalid=1954, Unknown=0, NotChecked=0, Total=2756 [2020-11-28 03:01:21,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-11-28 03:01:21,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-11-28 03:01:21,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-28 03:01:21,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2020-11-28 03:01:21,117 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 70 [2020-11-28 03:01:21,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:21,117 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2020-11-28 03:01:21,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-11-28 03:01:21,117 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2020-11-28 03:01:21,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-11-28 03:01:21,118 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:21,118 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:21,337 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:01:21,338 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:21,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:21,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1923398057, now seen corresponding path program 17 times [2020-11-28 03:01:21,338 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:21,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514043931] [2020-11-28 03:01:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:21,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:22,216 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:22,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514043931] [2020-11-28 03:01:22,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84047232] [2020-11-28 03:01:22,216 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 [2020-11-28 03:01:22,395 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-11-28 03:01:22,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:22,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 36 conjunts are in the unsatisfiable core [2020-11-28 03:01:22,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 561 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:22,480 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:22,480 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 37] total 39 [2020-11-28 03:01:22,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749951213] [2020-11-28 03:01:22,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-11-28 03:01:22,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:22,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-11-28 03:01:22,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=399, Invalid=1083, Unknown=0, NotChecked=0, Total=1482 [2020-11-28 03:01:22,483 INFO L87 Difference]: Start difference. First operand 77 states and 78 transitions. Second operand 39 states. [2020-11-28 03:01:23,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:23,194 INFO L93 Difference]: Finished difference Result 90 states and 92 transitions. [2020-11-28 03:01:23,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-11-28 03:01:23,195 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 74 [2020-11-28 03:01:23,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:23,196 INFO L225 Difference]: With dead ends: 90 [2020-11-28 03:01:23,196 INFO L226 Difference]: Without dead ends: 84 [2020-11-28 03:01:23,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 535 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=894, Invalid=2186, Unknown=0, NotChecked=0, Total=3080 [2020-11-28 03:01:23,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-11-28 03:01:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 81. [2020-11-28 03:01:23,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-11-28 03:01:23,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-11-28 03:01:23,203 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 74 [2020-11-28 03:01:23,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:23,203 INFO L481 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-11-28 03:01:23,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 39 states. [2020-11-28 03:01:23,203 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-11-28 03:01:23,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-28 03:01:23,204 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:23,204 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:23,413 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:01:23,414 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:23,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:23,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1202125989, now seen corresponding path program 18 times [2020-11-28 03:01:23,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:23,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637068384] [2020-11-28 03:01:23,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:23,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:24,061 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 0 proven. 630 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:24,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637068384] [2020-11-28 03:01:24,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400886404] [2020-11-28 03:01:24,061 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/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 [2020-11-28 03:01:24,553 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 18 check-sat command(s) [2020-11-28 03:01:24,553 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:01:24,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 61 conjunts are in the unsatisfiable core [2020-11-28 03:01:24,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:01:24,796 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-11-28 03:01:24,796 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:24,805 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:24,806 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:01:24,806 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:15 [2020-11-28 03:01:25,001 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:25,001 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-11-28 03:01:25,003 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:25,007 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:25,036 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-11-28 03:01:25,040 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:01:25,040 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2020-11-28 03:01:25,191 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:25,192 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-11-28 03:01:25,193 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:25,194 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:25,217 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-11-28 03:01:25,218 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:01:25,218 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2020-11-28 03:01:25,362 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:25,363 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-11-28 03:01:25,363 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:25,365 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:25,395 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-11-28 03:01:25,397 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:01:25,397 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2020-11-28 03:01:25,545 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:25,546 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-11-28 03:01:25,547 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:25,548 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:25,578 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-11-28 03:01:25,582 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:01:25,582 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2020-11-28 03:01:25,729 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:25,730 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-11-28 03:01:25,731 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:25,738 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:25,776 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-11-28 03:01:25,777 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:01:25,777 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2020-11-28 03:01:25,940 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:25,941 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-11-28 03:01:25,941 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:25,943 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:25,963 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-11-28 03:01:25,965 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:01:25,965 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2020-11-28 03:01:26,095 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:26,095 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-11-28 03:01:26,096 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:26,105 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:26,140 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-11-28 03:01:26,142 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:01:26,142 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:28, output treesize:13 [2020-11-28 03:01:26,315 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:26,315 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-11-28 03:01:26,316 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:26,318 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:26,343 INFO L625 ElimStorePlain]: treesize reduction 30, result has 44.4 percent of original size [2020-11-28 03:01:26,344 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:01:26,345 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:28, output treesize:9 [2020-11-28 03:01:26,412 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:26,413 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-11-28 03:01:26,413 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:26,414 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:26,432 INFO L625 ElimStorePlain]: treesize reduction 20, result has 60.8 percent of original size [2020-11-28 03:01:26,433 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-28 03:01:26,433 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:25, output treesize:19 [2020-11-28 03:01:26,509 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:26,568 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:26,642 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:26,672 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-11-28 03:01:26,672 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:26,704 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:26,704 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-11-28 03:01:26,705 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:26,710 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:26,753 INFO L625 ElimStorePlain]: treesize reduction 30, result has 55.2 percent of original size [2020-11-28 03:01:26,755 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-28 03:01:26,756 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:13 [2020-11-28 03:01:26,757 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:26,838 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:26,900 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:26,918 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-11-28 03:01:26,919 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:26,947 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:26,947 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-11-28 03:01:26,948 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:26,952 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:27,005 INFO L625 ElimStorePlain]: treesize reduction 30, result has 55.2 percent of original size [2020-11-28 03:01:27,006 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-28 03:01:27,006 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:13 [2020-11-28 03:01:27,007 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:27,058 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:27,114 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:27,149 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:27,149 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-11-28 03:01:27,150 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:27,154 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:27,166 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-11-28 03:01:27,166 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:27,212 INFO L625 ElimStorePlain]: treesize reduction 30, result has 55.2 percent of original size [2020-11-28 03:01:27,214 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-28 03:01:27,214 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:13 [2020-11-28 03:01:27,215 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:27,294 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:27,366 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:27,382 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-11-28 03:01:27,383 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:27,418 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:27,418 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-11-28 03:01:27,419 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:27,421 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:27,456 INFO L625 ElimStorePlain]: treesize reduction 30, result has 55.2 percent of original size [2020-11-28 03:01:27,458 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-28 03:01:27,458 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:13 [2020-11-28 03:01:27,459 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:27,552 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:27,636 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:27,647 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2020-11-28 03:01:27,647 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:27,680 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:27,681 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 54 [2020-11-28 03:01:27,681 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:27,683 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:27,729 INFO L625 ElimStorePlain]: treesize reduction 30, result has 55.2 percent of original size [2020-11-28 03:01:27,731 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2020-11-28 03:01:27,731 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:45, output treesize:13 [2020-11-28 03:01:27,732 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:27,816 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:27,894 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:01:27,905 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 19 treesize of output 7 [2020-11-28 03:01:27,906 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-28 03:01:27,908 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-28 03:01:27,908 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-28 03:01:27,909 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-28 03:01:28,012 INFO L134 CoverageAnalysis]: Checked inductivity of 630 backedges. 105 proven. 525 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:01:28,013 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:01:28,013 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 40] total 76 [2020-11-28 03:01:28,013 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424262074] [2020-11-28 03:01:28,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 76 states [2020-11-28 03:01:28,016 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:28,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2020-11-28 03:01:28,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1032, Invalid=4668, Unknown=0, NotChecked=0, Total=5700 [2020-11-28 03:01:28,020 INFO L87 Difference]: Start difference. First operand 81 states and 82 transitions. Second operand 76 states. [2020-11-28 03:01:30,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:30,617 INFO L93 Difference]: Finished difference Result 93 states and 96 transitions. [2020-11-28 03:01:30,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-11-28 03:01:30,618 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 78 [2020-11-28 03:01:30,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:30,619 INFO L225 Difference]: With dead ends: 93 [2020-11-28 03:01:30,619 INFO L226 Difference]: Without dead ends: 87 [2020-11-28 03:01:30,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3427 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=2505, Invalid=9927, Unknown=0, NotChecked=0, Total=12432 [2020-11-28 03:01:30,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-11-28 03:01:30,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 84. [2020-11-28 03:01:30,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-11-28 03:01:30,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 85 transitions. [2020-11-28 03:01:30,628 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 85 transitions. Word has length 78 [2020-11-28 03:01:30,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:30,629 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 85 transitions. [2020-11-28 03:01:30,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 76 states. [2020-11-28 03:01:30,629 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 85 transitions. [2020-11-28 03:01:30,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-28 03:01:30,630 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:01:30,630 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1] [2020-11-28 03:01:30,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:01:30,838 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:01:30,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:01:30,838 INFO L82 PathProgramCache]: Analyzing trace with hash 145436095, now seen corresponding path program 1 times [2020-11-28 03:01:30,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:01:30,838 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783436240] [2020-11-28 03:01:30,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:01:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:01:30,886 INFO L134 CoverageAnalysis]: Checked inductivity of 703 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 703 trivial. 0 not checked. [2020-11-28 03:01:30,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783436240] [2020-11-28 03:01:30,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:01:30,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-28 03:01:30,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548615932] [2020-11-28 03:01:30,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:01:30,888 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:01:30,889 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:01:30,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:01:30,889 INFO L87 Difference]: Start difference. First operand 84 states and 85 transitions. Second operand 4 states. [2020-11-28 03:01:30,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:01:30,904 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-11-28 03:01:30,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:01:30,907 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 83 [2020-11-28 03:01:30,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:01:30,907 INFO L225 Difference]: With dead ends: 84 [2020-11-28 03:01:30,907 INFO L226 Difference]: Without dead ends: 0 [2020-11-28 03:01:30,908 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:01:30,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-28 03:01:30,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-28 03:01:30,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-28 03:01:30,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:01:30,909 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 83 [2020-11-28 03:01:30,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:01:30,909 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:01:30,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:01:30,909 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:01:30,910 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-28 03:01:30,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-11-28 03:01:30,912 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-28 03:01:31,056 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 22 [2020-11-28 03:01:31,075 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2020-11-28 03:01:31,075 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-28 03:01:31,076 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-28 03:01:31,076 INFO L274 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-11-28 03:01:31,076 INFO L274 CegarLoopResult]: For program point L17-2(lines 10 21) no Hoare annotation was computed. [2020-11-28 03:01:31,076 INFO L274 CegarLoopResult]: For program point L17-3(lines 17 19) no Hoare annotation was computed. [2020-11-28 03:01:31,076 INFO L274 CegarLoopResult]: For program point L13-2(lines 13 15) no Hoare annotation was computed. [2020-11-28 03:01:31,076 INFO L274 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-11-28 03:01:31,076 INFO L274 CegarLoopResult]: For program point L13-4(line 13) no Hoare annotation was computed. [2020-11-28 03:01:31,076 INFO L270 CegarLoopResult]: At program point L13-5(lines 13 15) the Hoare annotation is: (or (= ULTIMATE.start_main_~i~0 0) (= ULTIMATE.start_main_~i~0 1) (= ULTIMATE.start_main_~i~0 3) (and (<= (select (select |#memory_int| |ULTIMATE.start_main_~#a~0.base|) (+ |ULTIMATE.start_main_~#a~0.offset| 12)) 2147483647) (<= 4 ULTIMATE.start_main_~i~0)) (= ULTIMATE.start_main_~i~0 2)) [2020-11-28 03:01:31,076 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-28 03:01:31,077 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW(line 13) no Hoare annotation was computed. [2020-11-28 03:01:31,077 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW(line 18) no Hoare annotation was computed. [2020-11-28 03:01:31,077 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-28 03:01:31,077 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-28 03:01:31,077 INFO L277 CegarLoopResult]: At program point L20(lines 10 21) the Hoare annotation is: true [2020-11-28 03:01:31,077 INFO L274 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-11-28 03:01:31,077 INFO L274 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-11-28 03:01:31,088 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 03:01:31,095 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 03:01:31,099 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:01:31 BoogieIcfgContainer [2020-11-28 03:01:31,099 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:01:31,099 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:01:31,100 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:01:31,100 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:01:31,101 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:01:03" (3/4) ... [2020-11-28 03:01:31,105 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-28 03:01:31,117 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2020-11-28 03:01:31,118 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-11-28 03:01:31,118 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-28 03:01:31,165 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_4da1423d-94c3-4e19-9fc7-ff6a5b3d485c/bin/uautomizer/witness.graphml [2020-11-28 03:01:31,165 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:01:31,167 INFO L168 Benchmark]: Toolchain (without parser) took 28406.72 ms. Allocated memory was 115.3 MB in the beginning and 243.3 MB in the end (delta: 127.9 MB). Free memory was 82.9 MB in the beginning and 84.0 MB in the end (delta: -1.1 MB). Peak memory consumption was 126.0 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:31,167 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 79.7 MB. Free memory was 39.9 MB in the beginning and 39.8 MB in the end (delta: 33.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:31,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.46 ms. Allocated memory is still 115.3 MB. Free memory was 82.7 MB in the beginning and 91.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:31,168 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.03 ms. Allocated memory is still 115.3 MB. Free memory was 91.0 MB in the beginning and 90.2 MB in the end (delta: 860.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:31,169 INFO L168 Benchmark]: Boogie Preprocessor took 59.41 ms. Allocated memory is still 115.3 MB. Free memory was 89.5 MB in the beginning and 88.9 MB in the end (delta: 618.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:01:31,169 INFO L168 Benchmark]: RCFGBuilder took 250.98 ms. Allocated memory is still 115.3 MB. Free memory was 88.9 MB in the beginning and 77.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:31,170 INFO L168 Benchmark]: TraceAbstraction took 27670.77 ms. Allocated memory was 115.3 MB in the beginning and 243.3 MB in the end (delta: 127.9 MB). Free memory was 77.0 MB in the beginning and 87.2 MB in the end (delta: -10.2 MB). Peak memory consumption was 118.3 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:31,174 INFO L168 Benchmark]: Witness Printer took 65.77 ms. Allocated memory is still 243.3 MB. Free memory was 87.2 MB in the beginning and 84.0 MB in the end (delta: 3.1 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:01:31,180 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 79.7 MB. Free memory was 39.9 MB in the beginning and 39.8 MB in the end (delta: 33.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 307.46 ms. Allocated memory is still 115.3 MB. Free memory was 82.7 MB in the beginning and 91.0 MB in the end (delta: -8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 43.03 ms. Allocated memory is still 115.3 MB. Free memory was 91.0 MB in the beginning and 90.2 MB in the end (delta: 860.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 59.41 ms. Allocated memory is still 115.3 MB. Free memory was 89.5 MB in the beginning and 88.9 MB in the end (delta: 618.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 250.98 ms. Allocated memory is still 115.3 MB. Free memory was 88.9 MB in the beginning and 77.8 MB in the end (delta: 11.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27670.77 ms. Allocated memory was 115.3 MB in the beginning and 243.3 MB in the end (delta: 127.9 MB). Free memory was 77.0 MB in the beginning and 87.2 MB in the end (delta: -10.2 MB). Peak memory consumption was 118.3 MB. Max. memory is 16.1 GB. * Witness Printer took 65.77 ms. Allocated memory is still 243.3 MB. Free memory was 87.2 MB in the beginning and 84.0 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.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 18]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - PositiveResult [Line: 13]: integer overflow can never occur For all program executions holds that integer overflow can never occur at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant [2020-11-28 03:01:31,192 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-11-28 03:01:31,195 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((i == 0 || i == 1) || i == 3) || (unknown-#memory_int-unknown[a][a + 12] <= 2147483647 && 4 <= i)) || i == 2 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 18 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 27.4s, OverallIterations: 22, TraceHistogramMax: 19, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 196 SDtfs, 739 SDslu, 2319 SDs, 0 SdLazy, 3333 SolverSat, 121 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1387 GetRequests, 751 SyntacticMatches, 0 SemanticMatches, 636 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6952 ImplicationChecksByTransitivity, 13.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=84occurred in iteration=21, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 22 MinimizatonAttempts, 55 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 22 NumberOfFragments, 27 HoareAnnotationTreeSize, 2 FomulaSimplifications, 168 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 188 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 11.9s InterpolantComputationTime, 1701 NumberOfCodeBlocks, 1697 NumberOfCodeBlocksAsserted, 142 NumberOfCheckSat, 1660 ConstructedInterpolants, 0 QuantifiedInterpolants, 288776 SizeOfPredicates, 193 NumberOfNonLiveVariables, 2186 ConjunctsInSsa, 405 ConjunctsInUnsatCore, 41 InterpolantComputations, 4 PerfectInterpolantSequences, 815/8808 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...