./Ultimate.py --spec ../../sv-benchmarks/c/properties/no-overflow.prp --file ../../sv-benchmarks/c/termination-crafted/NonTermination4.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_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/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 94b61e96441ca10668b436b4ef10dfd9464f0863 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(OVERFLOW) --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:13:10,005 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:13:10,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:13:10,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:13:10,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:13:10,075 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:13:10,079 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:13:10,084 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:13:10,087 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:13:10,093 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:13:10,094 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:13:10,096 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:13:10,097 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:13:10,100 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:13:10,102 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:13:10,105 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:13:10,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:13:10,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:13:10,113 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:13:10,122 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:13:10,124 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:13:10,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:13:10,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:13:10,130 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:13:10,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:13:10,139 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:13:10,140 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:13:10,142 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:13:10,142 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:13:10,144 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:13:10,144 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:13:10,145 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:13:10,147 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:13:10,149 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:13:10,150 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:13:10,150 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:13:10,151 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:13:10,151 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:13:10,152 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:13:10,153 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:13:10,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:13:10,157 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-29 19:13:10,198 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:13:10,199 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:13:10,201 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:13:10,201 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:13:10,201 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:13:10,202 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:13:10,202 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:13:10,202 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:13:10,203 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:13:10,203 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-29 19:13:10,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-29 19:13:10,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-29 19:13:10,205 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-29 19:13:10,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:13:10,205 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:13:10,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-29 19:13:10,206 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:13:10,206 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:13:10,206 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-29 19:13:10,206 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-29 19:13:10,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:13:10,207 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:13:10,207 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-29 19:13:10,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-29 19:13:10,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:13:10,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-29 19:13:10,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-29 19:13:10,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:13:10,209 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_70c4cb5e-bb86-4d3a-b68b-949163b30326/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94b61e96441ca10668b436b4ef10dfd9464f0863 [2020-11-29 19:13:10,518 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:13:10,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:13:10,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:13:10,558 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:13:10,559 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:13:10,560 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/NonTermination4.c [2020-11-29 19:13:10,655 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/data/4dc57980c/f42ed24b5cbf4d6aa24f5b942ad11af6/FLAGa7a95556c [2020-11-29 19:13:11,284 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:13:11,285 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/sv-benchmarks/c/termination-crafted/NonTermination4.c [2020-11-29 19:13:11,298 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/data/4dc57980c/f42ed24b5cbf4d6aa24f5b942ad11af6/FLAGa7a95556c [2020-11-29 19:13:11,655 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/data/4dc57980c/f42ed24b5cbf4d6aa24f5b942ad11af6 [2020-11-29 19:13:11,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:13:11,659 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:13:11,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:13:11,663 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:13:11,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:13:11,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:13:11" (1/1) ... [2020-11-29 19:13:11,670 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c8da53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:11, skipping insertion in model container [2020-11-29 19:13:11,670 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:13:11" (1/1) ... [2020-11-29 19:13:11,678 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:13:11,691 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:13:11,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:13:11,850 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:13:11,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:13:11,914 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:13:11,915 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:11 WrapperNode [2020-11-29 19:13:11,916 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:13:11,918 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:13:11,918 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:13:11,918 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:13:11,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:11" (1/1) ... [2020-11-29 19:13:11,932 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:11" (1/1) ... [2020-11-29 19:13:11,951 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:13:11,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:13:11,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:13:11,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:13:11,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:11" (1/1) ... [2020-11-29 19:13:11,964 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:11" (1/1) ... [2020-11-29 19:13:11,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:11" (1/1) ... [2020-11-29 19:13:11,965 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:11" (1/1) ... [2020-11-29 19:13:11,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:11" (1/1) ... [2020-11-29 19:13:11,972 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:11" (1/1) ... [2020-11-29 19:13:11,973 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:11" (1/1) ... [2020-11-29 19:13:11,975 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:13:11,976 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:13:11,976 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:13:11,976 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:13:11,978 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:11" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-29 19:13:12,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:13:12,061 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:13:12,248 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:13:12,248 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 19:13:12,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:13:12 BoogieIcfgContainer [2020-11-29 19:13:12,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:13:12,252 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-29 19:13:12,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-29 19:13:12,256 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-29 19:13:12,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.11 07:13:11" (1/3) ... [2020-11-29 19:13:12,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e5f6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:13:12, skipping insertion in model container [2020-11-29 19:13:12,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:13:11" (2/3) ... [2020-11-29 19:13:12,258 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40e5f6a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.11 07:13:12, skipping insertion in model container [2020-11-29 19:13:12,258 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:13:12" (3/3) ... [2020-11-29 19:13:12,260 INFO L111 eAbstractionObserver]: Analyzing ICFG NonTermination4.c [2020-11-29 19:13:12,272 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-29 19:13:12,277 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-29 19:13:12,290 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-29 19:13:12,325 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-29 19:13:12,325 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-29 19:13:12,326 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-29 19:13:12,326 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:13:12,326 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:13:12,326 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-29 19:13:12,326 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:13:12,326 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-29 19:13:12,341 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-29 19:13:12,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-29 19:13:12,346 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:12,347 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-29 19:13:12,348 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:12,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:12,354 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-11-29 19:13:12,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:12,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044611026] [2020-11-29 19:13:12,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:12,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:12,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:12,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044611026] [2020-11-29 19:13:12,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:12,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 19:13:12,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546730146] [2020-11-29 19:13:12,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:13:12,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:12,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:13:12,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:13:12,539 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-11-29 19:13:12,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:12,836 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-11-29 19:13:12,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:13:12,843 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-29 19:13:12,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:12,865 INFO L225 Difference]: With dead ends: 22 [2020-11-29 19:13:12,865 INFO L226 Difference]: Without dead ends: 13 [2020-11-29 19:13:12,870 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:13:12,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-29 19:13:12,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-29 19:13:12,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 19:13:12,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-29 19:13:12,945 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2020-11-29 19:13:12,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:12,946 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-29 19:13:12,946 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:13:12,946 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-29 19:13:12,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-29 19:13:12,947 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:12,947 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-29 19:13:12,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-29 19:13:12,948 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:12,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:12,949 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-11-29 19:13:12,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:12,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987049907] [2020-11-29 19:13:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:12,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:12,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:12,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987049907] [2020-11-29 19:13:12,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:12,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 19:13:12,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372626169] [2020-11-29 19:13:12,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:13:12,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:12,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:13:12,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:13:12,978 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2020-11-29 19:13:12,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:12,998 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-11-29 19:13:12,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:13:12,998 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-29 19:13:12,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:12,999 INFO L225 Difference]: With dead ends: 12 [2020-11-29 19:13:12,999 INFO L226 Difference]: Without dead ends: 11 [2020-11-29 19:13:13,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:13:13,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-29 19:13:13,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-29 19:13:13,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-29 19:13:13,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-29 19:13:13,004 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2020-11-29 19:13:13,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:13,004 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-29 19:13:13,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:13:13,005 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-29 19:13:13,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-29 19:13:13,005 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:13,005 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-29 19:13:13,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-29 19:13:13,006 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:13,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:13,007 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2020-11-29 19:13:13,008 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:13,008 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988975168] [2020-11-29 19:13:13,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:13,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:13,063 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988975168] [2020-11-29 19:13:13,063 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:13,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 19:13:13,064 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394759639] [2020-11-29 19:13:13,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:13:13,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:13,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:13:13,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:13:13,066 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2020-11-29 19:13:13,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:13,109 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-11-29 19:13:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:13:13,111 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-29 19:13:13,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:13,111 INFO L225 Difference]: With dead ends: 15 [2020-11-29 19:13:13,112 INFO L226 Difference]: Without dead ends: 14 [2020-11-29 19:13:13,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:13:13,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-29 19:13:13,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-11-29 19:13:13,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-29 19:13:13,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-29 19:13:13,117 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2020-11-29 19:13:13,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:13,117 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-29 19:13:13,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:13:13,117 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-29 19:13:13,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-29 19:13:13,118 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:13,118 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-29 19:13:13,118 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-29 19:13:13,119 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:13,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:13,123 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-11-29 19:13:13,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:13,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833131493] [2020-11-29 19:13:13,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:13,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:13,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:13,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833131493] [2020-11-29 19:13:13,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:13:13,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 19:13:13,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290888607] [2020-11-29 19:13:13,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-29 19:13:13,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:13,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:13:13,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:13:13,180 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2020-11-29 19:13:13,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:13,201 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-11-29 19:13:13,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:13:13,203 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-29 19:13:13,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:13,204 INFO L225 Difference]: With dead ends: 13 [2020-11-29 19:13:13,204 INFO L226 Difference]: Without dead ends: 12 [2020-11-29 19:13:13,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:13:13,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-29 19:13:13,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-29 19:13:13,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-29 19:13:13,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-29 19:13:13,209 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2020-11-29 19:13:13,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:13,209 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-29 19:13:13,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-29 19:13:13,209 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-29 19:13:13,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-29 19:13:13,210 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:13,210 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-29 19:13:13,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-29 19:13:13,211 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:13,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:13,214 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2020-11-29 19:13:13,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:13,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664333740] [2020-11-29 19:13:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:13,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:13,280 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:13,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664333740] [2020-11-29 19:13:13,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839276852] [2020-11-29 19:13:13,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:13,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 19:13:13,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:13,411 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:13,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:13,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-11-29 19:13:13,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139573520] [2020-11-29 19:13:13,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:13,413 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:13,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:13,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:13,414 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-11-29 19:13:13,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:13,449 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-29 19:13:13,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:13,450 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-29 19:13:13,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:13,451 INFO L225 Difference]: With dead ends: 17 [2020-11-29 19:13:13,451 INFO L226 Difference]: Without dead ends: 16 [2020-11-29 19:13:13,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:13,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-29 19:13:13,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-11-29 19:13:13,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-29 19:13:13,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-29 19:13:13,456 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-11-29 19:13:13,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:13,456 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-29 19:13:13,457 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:13,457 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-29 19:13:13,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-29 19:13:13,457 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:13,458 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2020-11-29 19:13:13,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:13,672 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:13,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:13,673 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2020-11-29 19:13:13,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:13,673 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741473925] [2020-11-29 19:13:13,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:13,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:13,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741473925] [2020-11-29 19:13:13,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1157001270] [2020-11-29 19:13:13,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-29 19:13:13,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:13,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-29 19:13:13,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:13,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:13,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:13,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-11-29 19:13:13,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978388097] [2020-11-29 19:13:13,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-29 19:13:13,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:13,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 19:13:13,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:13,807 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-11-29 19:13:13,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:13,835 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-29 19:13:13,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 19:13:13,837 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-29 19:13:13,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:13,838 INFO L225 Difference]: With dead ends: 19 [2020-11-29 19:13:13,838 INFO L226 Difference]: Without dead ends: 18 [2020-11-29 19:13:13,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 19:13:13,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-29 19:13:13,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-11-29 19:13:13,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-29 19:13:13,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-29 19:13:13,843 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2020-11-29 19:13:13,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:13,845 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-29 19:13:13,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-29 19:13:13,845 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-29 19:13:13,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-29 19:13:13,846 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:13,846 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1] [2020-11-29 19:13:14,047 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:14,047 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:14,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:14,048 INFO L82 PathProgramCache]: Analyzing trace with hash 745486881, now seen corresponding path program 2 times [2020-11-29 19:13:14,048 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:14,048 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609376437] [2020-11-29 19:13:14,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:14,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:14,110 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:14,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609376437] [2020-11-29 19:13:14,111 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851792801] [2020-11-29 19:13:14,111 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-29 19:13:14,149 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:13:14,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:14,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:13:14,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:14,203 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:14,204 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:14,204 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-11-29 19:13:14,204 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452704263] [2020-11-29 19:13:14,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:13:14,205 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:14,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:13:14,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:14,206 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-11-29 19:13:14,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:14,261 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-11-29 19:13:14,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:13:14,261 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-29 19:13:14,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:14,262 INFO L225 Difference]: With dead ends: 22 [2020-11-29 19:13:14,262 INFO L226 Difference]: Without dead ends: 21 [2020-11-29 19:13:14,263 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:14,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-29 19:13:14,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-11-29 19:13:14,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-29 19:13:14,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-29 19:13:14,268 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2020-11-29 19:13:14,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:14,268 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-29 19:13:14,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:13:14,268 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-29 19:13:14,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-29 19:13:14,269 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:14,269 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2020-11-29 19:13:14,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:14,470 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:14,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:14,470 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2020-11-29 19:13:14,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:14,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409309265] [2020-11-29 19:13:14,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:14,526 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:14,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409309265] [2020-11-29 19:13:14,527 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740705786] [2020-11-29 19:13:14,527 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:14,559 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:13:14,559 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:14,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:13:14,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:14,602 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:14,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:14,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-11-29 19:13:14,602 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005828292] [2020-11-29 19:13:14,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-29 19:13:14,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:14,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 19:13:14,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:14,604 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2020-11-29 19:13:14,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:14,637 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-29 19:13:14,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 19:13:14,637 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-29 19:13:14,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:14,638 INFO L225 Difference]: With dead ends: 24 [2020-11-29 19:13:14,638 INFO L226 Difference]: Without dead ends: 23 [2020-11-29 19:13:14,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 19:13:14,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-29 19:13:14,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-29 19:13:14,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 19:13:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-29 19:13:14,647 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2020-11-29 19:13:14,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:14,647 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-29 19:13:14,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-29 19:13:14,647 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-29 19:13:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-29 19:13:14,648 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:14,648 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1] [2020-11-29 19:13:14,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:14,876 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:14,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:14,876 INFO L82 PathProgramCache]: Analyzing trace with hash 1960222447, now seen corresponding path program 3 times [2020-11-29 19:13:14,877 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:14,877 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752372357] [2020-11-29 19:13:14,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:14,988 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:14,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752372357] [2020-11-29 19:13:14,988 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [421572620] [2020-11-29 19:13:14,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:15,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-29 19:13:15,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:15,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:13:15,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:15,090 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:15,090 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:15,090 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-11-29 19:13:15,091 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440259378] [2020-11-29 19:13:15,091 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:13:15,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:15,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:13:15,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:13:15,092 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2020-11-29 19:13:15,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:15,140 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-29 19:13:15,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:13:15,141 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-29 19:13:15,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:15,141 INFO L225 Difference]: With dead ends: 27 [2020-11-29 19:13:15,142 INFO L226 Difference]: Without dead ends: 26 [2020-11-29 19:13:15,142 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:13:15,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-29 19:13:15,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-11-29 19:13:15,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-29 19:13:15,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-11-29 19:13:15,148 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2020-11-29 19:13:15,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:15,148 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-11-29 19:13:15,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:13:15,148 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-11-29 19:13:15,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-29 19:13:15,149 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:15,149 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2020-11-29 19:13:15,350 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:15,350 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:15,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:15,351 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2020-11-29 19:13:15,351 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:15,351 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758106184] [2020-11-29 19:13:15,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:15,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:15,431 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:15,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758106184] [2020-11-29 19:13:15,431 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199320538] [2020-11-29 19:13:15,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-29 19:13:15,466 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-29 19:13:15,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:15,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-29 19:13:15,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:15,528 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:15,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:15,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-11-29 19:13:15,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [388165167] [2020-11-29 19:13:15,530 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-29 19:13:15,530 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:15,530 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 19:13:15,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:13:15,531 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2020-11-29 19:13:15,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:15,562 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-29 19:13:15,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 19:13:15,563 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-11-29 19:13:15,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:15,564 INFO L225 Difference]: With dead ends: 29 [2020-11-29 19:13:15,564 INFO L226 Difference]: Without dead ends: 28 [2020-11-29 19:13:15,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 19:13:15,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-29 19:13:15,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-11-29 19:13:15,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-29 19:13:15,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-11-29 19:13:15,569 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2020-11-29 19:13:15,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:15,570 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-11-29 19:13:15,570 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-29 19:13:15,570 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-11-29 19:13:15,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-29 19:13:15,571 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:15,571 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1] [2020-11-29 19:13:15,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:15,788 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:15,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:15,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1492388577, now seen corresponding path program 4 times [2020-11-29 19:13:15,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:15,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83422371] [2020-11-29 19:13:15,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:15,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:15,858 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:15,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83422371] [2020-11-29 19:13:15,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [353362068] [2020-11-29 19:13:15,858 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:15,885 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:13:15,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:15,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:13:15,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:15,975 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:15,976 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:15,976 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-29 19:13:15,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558104742] [2020-11-29 19:13:15,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:13:15,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:15,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:13:15,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:13:15,977 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2020-11-29 19:13:16,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:16,013 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-11-29 19:13:16,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:13:16,014 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-29 19:13:16,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:16,014 INFO L225 Difference]: With dead ends: 32 [2020-11-29 19:13:16,014 INFO L226 Difference]: Without dead ends: 31 [2020-11-29 19:13:16,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:13:16,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-29 19:13:16,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-11-29 19:13:16,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-29 19:13:16,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-11-29 19:13:16,019 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2020-11-29 19:13:16,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:16,019 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-11-29 19:13:16,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:13:16,020 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-11-29 19:13:16,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-29 19:13:16,020 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:16,020 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2020-11-29 19:13:16,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:16,221 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:16,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:16,222 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2020-11-29 19:13:16,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:16,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1500530205] [2020-11-29 19:13:16,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:16,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:16,313 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:16,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1500530205] [2020-11-29 19:13:16,314 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239463607] [2020-11-29 19:13:16,314 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:16,348 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:13:16,348 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:16,350 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-29 19:13:16,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:16,437 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:16,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:16,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-29 19:13:16,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798368693] [2020-11-29 19:13:16,438 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-29 19:13:16,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:16,439 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-29 19:13:16,439 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:13:16,439 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 7 states. [2020-11-29 19:13:16,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:16,483 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-11-29 19:13:16,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-29 19:13:16,484 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-29 19:13:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:16,484 INFO L225 Difference]: With dead ends: 34 [2020-11-29 19:13:16,485 INFO L226 Difference]: Without dead ends: 33 [2020-11-29 19:13:16,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-29 19:13:16,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-29 19:13:16,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-11-29 19:13:16,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-29 19:13:16,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-11-29 19:13:16,490 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2020-11-29 19:13:16,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:16,490 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-11-29 19:13:16,490 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-29 19:13:16,490 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-11-29 19:13:16,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-29 19:13:16,492 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:16,492 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1] [2020-11-29 19:13:16,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-29 19:13:16,708 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:16,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:16,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1300871633, now seen corresponding path program 5 times [2020-11-29 19:13:16,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:16,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353247379] [2020-11-29 19:13:16,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:16,798 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:16,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353247379] [2020-11-29 19:13:16,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307674081] [2020-11-29 19:13:16,798 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:16,840 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-29 19:13:16,840 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:16,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:13:16,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:16,933 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:16,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:16,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-29 19:13:16,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028130842] [2020-11-29 19:13:16,934 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:13:16,934 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:16,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:13:16,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:13:16,935 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2020-11-29 19:13:16,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:16,990 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-11-29 19:13:16,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:13:16,991 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-11-29 19:13:16,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:16,991 INFO L225 Difference]: With dead ends: 37 [2020-11-29 19:13:16,991 INFO L226 Difference]: Without dead ends: 36 [2020-11-29 19:13:16,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:13:16,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-29 19:13:16,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-11-29 19:13:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-29 19:13:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-11-29 19:13:16,994 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2020-11-29 19:13:16,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:16,995 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-11-29 19:13:16,995 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:13:16,995 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-11-29 19:13:16,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-29 19:13:16,995 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:16,995 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2020-11-29 19:13:17,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:17,196 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:17,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:17,197 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2020-11-29 19:13:17,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:17,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303775101] [2020-11-29 19:13:17,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:17,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:17,312 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:17,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303775101] [2020-11-29 19:13:17,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [507385250] [2020-11-29 19:13:17,313 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:17,354 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-29 19:13:17,354 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:17,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 19:13:17,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:17,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:17,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-29 19:13:17,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688123731] [2020-11-29 19:13:17,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-29 19:13:17,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:17,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-29 19:13:17,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:13:17,436 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 8 states. [2020-11-29 19:13:17,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:17,462 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-11-29 19:13:17,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-29 19:13:17,463 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-11-29 19:13:17,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:17,463 INFO L225 Difference]: With dead ends: 39 [2020-11-29 19:13:17,463 INFO L226 Difference]: Without dead ends: 38 [2020-11-29 19:13:17,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 24 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-29 19:13:17,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-29 19:13:17,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-11-29 19:13:17,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-29 19:13:17,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-11-29 19:13:17,467 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2020-11-29 19:13:17,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:17,468 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-11-29 19:13:17,468 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-29 19:13:17,468 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-11-29 19:13:17,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-29 19:13:17,469 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:17,469 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1] [2020-11-29 19:13:17,669 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:17,670 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:17,670 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:17,670 INFO L82 PathProgramCache]: Analyzing trace with hash 758836129, now seen corresponding path program 6 times [2020-11-29 19:13:17,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:17,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877721955] [2020-11-29 19:13:17,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:17,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:17,750 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:17,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877721955] [2020-11-29 19:13:17,750 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [293023611] [2020-11-29 19:13:17,750 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:17,775 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-29 19:13:17,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:17,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 19:13:17,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:17,855 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:17,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:17,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-11-29 19:13:17,856 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324413940] [2020-11-29 19:13:17,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 19:13:17,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:17,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 19:13:17,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:13:17,857 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 9 states. [2020-11-29 19:13:17,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:17,935 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-11-29 19:13:17,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:13:17,940 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-11-29 19:13:17,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:17,940 INFO L225 Difference]: With dead ends: 42 [2020-11-29 19:13:17,940 INFO L226 Difference]: Without dead ends: 41 [2020-11-29 19:13:17,941 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 26 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:13:17,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-29 19:13:17,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-11-29 19:13:17,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 19:13:17,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-11-29 19:13:17,950 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 33 [2020-11-29 19:13:17,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:17,950 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-11-29 19:13:17,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 19:13:17,951 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-11-29 19:13:17,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-29 19:13:17,951 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:17,952 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2020-11-29 19:13:18,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-29 19:13:18,164 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:18,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:18,164 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2020-11-29 19:13:18,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:18,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250855433] [2020-11-29 19:13:18,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:18,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:18,295 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:18,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250855433] [2020-11-29 19:13:18,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323630145] [2020-11-29 19:13:18,295 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:18,359 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-29 19:13:18,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:18,360 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-29 19:13:18,361 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:18,461 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:18,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:18,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-11-29 19:13:18,462 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186377534] [2020-11-29 19:13:18,462 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-29 19:13:18,462 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:18,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-29 19:13:18,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:13:18,463 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 9 states. [2020-11-29 19:13:18,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:18,506 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-11-29 19:13:18,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-29 19:13:18,506 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-11-29 19:13:18,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:18,507 INFO L225 Difference]: With dead ends: 44 [2020-11-29 19:13:18,507 INFO L226 Difference]: Without dead ends: 43 [2020-11-29 19:13:18,508 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 6 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-29 19:13:18,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-29 19:13:18,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-11-29 19:13:18,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-29 19:13:18,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-11-29 19:13:18,513 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2020-11-29 19:13:18,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:18,513 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-11-29 19:13:18,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-29 19:13:18,513 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-11-29 19:13:18,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-29 19:13:18,514 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:18,514 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1] [2020-11-29 19:13:18,723 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-29 19:13:18,723 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:18,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:18,724 INFO L82 PathProgramCache]: Analyzing trace with hash 522050927, now seen corresponding path program 7 times [2020-11-29 19:13:18,724 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:18,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9956775] [2020-11-29 19:13:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:18,854 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:18,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9956775] [2020-11-29 19:13:18,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1647630148] [2020-11-29 19:13:18,855 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:18,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:18,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:13:18,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:18,993 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:18,993 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:18,993 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-29 19:13:18,993 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396676603] [2020-11-29 19:13:18,994 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 19:13:18,994 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:18,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 19:13:18,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:13:18,994 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 10 states. [2020-11-29 19:13:19,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:19,050 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-11-29 19:13:19,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:13:19,051 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-11-29 19:13:19,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:19,051 INFO L225 Difference]: With dead ends: 47 [2020-11-29 19:13:19,051 INFO L226 Difference]: Without dead ends: 46 [2020-11-29 19:13:19,052 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:13:19,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-29 19:13:19,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-11-29 19:13:19,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-29 19:13:19,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-11-29 19:13:19,056 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 38 [2020-11-29 19:13:19,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:19,056 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-11-29 19:13:19,056 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 19:13:19,056 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-11-29 19:13:19,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-29 19:13:19,057 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:19,057 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2020-11-29 19:13:19,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-29 19:13:19,267 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:19,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:19,268 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2020-11-29 19:13:19,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:19,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755465993] [2020-11-29 19:13:19,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:19,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:19,380 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:19,380 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755465993] [2020-11-29 19:13:19,381 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938922217] [2020-11-29 19:13:19,381 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-29 19:13:19,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:19,419 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 19:13:19,420 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:19,552 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:19,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:19,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-29 19:13:19,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1942581757] [2020-11-29 19:13:19,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-29 19:13:19,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:19,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-29 19:13:19,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:13:19,554 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 10 states. [2020-11-29 19:13:19,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:19,597 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-11-29 19:13:19,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-29 19:13:19,598 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-11-29 19:13:19,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:19,598 INFO L225 Difference]: With dead ends: 49 [2020-11-29 19:13:19,598 INFO L226 Difference]: Without dead ends: 48 [2020-11-29 19:13:19,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 32 SyntacticMatches, 7 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-29 19:13:19,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-29 19:13:19,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-11-29 19:13:19,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-29 19:13:19,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-11-29 19:13:19,602 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2020-11-29 19:13:19,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:19,602 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-11-29 19:13:19,602 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-29 19:13:19,602 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-11-29 19:13:19,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-29 19:13:19,603 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:19,603 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1] [2020-11-29 19:13:19,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:19,815 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:19,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:19,816 INFO L82 PathProgramCache]: Analyzing trace with hash -1443898271, now seen corresponding path program 8 times [2020-11-29 19:13:19,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:19,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019483770] [2020-11-29 19:13:19,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:19,944 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:19,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019483770] [2020-11-29 19:13:19,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711301082] [2020-11-29 19:13:19,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:19,980 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:13:19,980 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:19,981 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 19:13:19,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:20,099 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:20,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:20,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-11-29 19:13:20,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720181781] [2020-11-29 19:13:20,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 19:13:20,100 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:20,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 19:13:20,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:13:20,101 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 11 states. [2020-11-29 19:13:20,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:20,179 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-11-29 19:13:20,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 19:13:20,180 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-11-29 19:13:20,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:20,180 INFO L225 Difference]: With dead ends: 52 [2020-11-29 19:13:20,180 INFO L226 Difference]: Without dead ends: 51 [2020-11-29 19:13:20,181 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:13:20,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-29 19:13:20,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-11-29 19:13:20,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-29 19:13:20,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-11-29 19:13:20,187 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 43 [2020-11-29 19:13:20,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:20,188 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-11-29 19:13:20,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 19:13:20,188 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-11-29 19:13:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-29 19:13:20,189 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:20,189 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2020-11-29 19:13:20,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:20,403 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:20,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:20,404 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2020-11-29 19:13:20,404 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:20,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625565165] [2020-11-29 19:13:20,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:20,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:20,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625565165] [2020-11-29 19:13:20,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749279765] [2020-11-29 19:13:20,570 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:20,606 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:13:20,606 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:20,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-29 19:13:20,609 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:20,754 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:20,754 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:20,754 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-11-29 19:13:20,754 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542558743] [2020-11-29 19:13:20,755 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-29 19:13:20,755 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:20,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-29 19:13:20,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:13:20,756 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 11 states. [2020-11-29 19:13:20,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:20,809 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-29 19:13:20,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-29 19:13:20,810 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-11-29 19:13:20,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:20,810 INFO L225 Difference]: With dead ends: 54 [2020-11-29 19:13:20,810 INFO L226 Difference]: Without dead ends: 53 [2020-11-29 19:13:20,811 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-29 19:13:20,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-29 19:13:20,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-11-29 19:13:20,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-29 19:13:20,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-11-29 19:13:20,815 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2020-11-29 19:13:20,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:20,815 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-11-29 19:13:20,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-29 19:13:20,815 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-11-29 19:13:20,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-29 19:13:20,816 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:20,816 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1] [2020-11-29 19:13:21,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:21,039 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:21,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:21,039 INFO L82 PathProgramCache]: Analyzing trace with hash 1168204975, now seen corresponding path program 9 times [2020-11-29 19:13:21,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:21,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897992133] [2020-11-29 19:13:21,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:21,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:21,181 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:21,181 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897992133] [2020-11-29 19:13:21,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1951775813] [2020-11-29 19:13:21,182 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:21,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-29 19:13:21,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:21,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 19:13:21,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:21,371 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:21,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:21,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-11-29 19:13:21,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152824223] [2020-11-29 19:13:21,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 19:13:21,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:21,375 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 19:13:21,375 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:13:21,376 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 12 states. [2020-11-29 19:13:21,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:21,450 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2020-11-29 19:13:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 19:13:21,450 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-11-29 19:13:21,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:21,451 INFO L225 Difference]: With dead ends: 57 [2020-11-29 19:13:21,451 INFO L226 Difference]: Without dead ends: 56 [2020-11-29 19:13:21,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:13:21,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-29 19:13:21,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-11-29 19:13:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-29 19:13:21,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-11-29 19:13:21,456 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2020-11-29 19:13:21,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:21,456 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-11-29 19:13:21,456 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 19:13:21,456 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-11-29 19:13:21,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-29 19:13:21,457 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:21,457 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2020-11-29 19:13:21,657 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-29 19:13:21,657 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:21,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:21,658 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2020-11-29 19:13:21,658 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:21,658 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203709189] [2020-11-29 19:13:21,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:21,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:21,769 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:21,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203709189] [2020-11-29 19:13:21,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1429434744] [2020-11-29 19:13:21,769 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:21,813 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-29 19:13:21,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:21,814 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-29 19:13:21,815 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:21,982 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:21,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:21,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-11-29 19:13:21,984 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093770222] [2020-11-29 19:13:21,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-29 19:13:21,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:21,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-29 19:13:21,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:13:21,985 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 12 states. [2020-11-29 19:13:22,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:22,037 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-11-29 19:13:22,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-29 19:13:22,040 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-11-29 19:13:22,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:22,040 INFO L225 Difference]: With dead ends: 59 [2020-11-29 19:13:22,041 INFO L226 Difference]: Without dead ends: 58 [2020-11-29 19:13:22,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-29 19:13:22,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-29 19:13:22,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-11-29 19:13:22,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-29 19:13:22,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-11-29 19:13:22,045 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2020-11-29 19:13:22,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:22,045 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-11-29 19:13:22,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-29 19:13:22,045 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-11-29 19:13:22,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-29 19:13:22,052 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:22,052 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1] [2020-11-29 19:13:22,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-29 19:13:22,267 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:22,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:22,268 INFO L82 PathProgramCache]: Analyzing trace with hash -390144735, now seen corresponding path program 10 times [2020-11-29 19:13:22,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:22,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696385407] [2020-11-29 19:13:22,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:22,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:22,442 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:22,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696385407] [2020-11-29 19:13:22,443 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832043276] [2020-11-29 19:13:22,443 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:22,485 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:13:22,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:22,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 19:13:22,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:22,644 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:22,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:22,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-11-29 19:13:22,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842473760] [2020-11-29 19:13:22,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 19:13:22,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:22,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 19:13:22,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-11-29 19:13:22,647 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 13 states. [2020-11-29 19:13:22,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:22,706 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-11-29 19:13:22,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 19:13:22,707 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-11-29 19:13:22,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:22,707 INFO L225 Difference]: With dead ends: 62 [2020-11-29 19:13:22,707 INFO L226 Difference]: Without dead ends: 61 [2020-11-29 19:13:22,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 42 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-11-29 19:13:22,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-29 19:13:22,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-11-29 19:13:22,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-29 19:13:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2020-11-29 19:13:22,711 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 53 [2020-11-29 19:13:22,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:22,711 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2020-11-29 19:13:22,711 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 19:13:22,711 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2020-11-29 19:13:22,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-29 19:13:22,712 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:22,712 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2020-11-29 19:13:22,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-29 19:13:22,919 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:22,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:22,920 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2020-11-29 19:13:22,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:22,920 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [839683227] [2020-11-29 19:13:22,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:22,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:23,067 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:23,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [839683227] [2020-11-29 19:13:23,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466579487] [2020-11-29 19:13:23,067 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:23,092 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:13:23,093 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:23,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-29 19:13:23,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:23,248 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:23,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:23,248 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-11-29 19:13:23,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44236218] [2020-11-29 19:13:23,250 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-29 19:13:23,250 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:23,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-29 19:13:23,252 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-11-29 19:13:23,252 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 13 states. [2020-11-29 19:13:23,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:23,303 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-11-29 19:13:23,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-29 19:13:23,303 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-11-29 19:13:23,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:23,304 INFO L225 Difference]: With dead ends: 64 [2020-11-29 19:13:23,304 INFO L226 Difference]: Without dead ends: 63 [2020-11-29 19:13:23,304 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 44 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-11-29 19:13:23,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-29 19:13:23,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-11-29 19:13:23,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-29 19:13:23,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-11-29 19:13:23,308 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2020-11-29 19:13:23,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:23,308 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-11-29 19:13:23,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-29 19:13:23,308 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-11-29 19:13:23,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-29 19:13:23,309 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:23,309 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1] [2020-11-29 19:13:23,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-29 19:13:23,527 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:23,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:23,528 INFO L82 PathProgramCache]: Analyzing trace with hash 936696815, now seen corresponding path program 11 times [2020-11-29 19:13:23,528 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:23,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635953874] [2020-11-29 19:13:23,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:23,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:23,669 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:23,669 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635953874] [2020-11-29 19:13:23,670 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914737637] [2020-11-29 19:13:23,670 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:23,722 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-29 19:13:23,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:23,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 19:13:23,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:23,909 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:23,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:23,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-11-29 19:13:23,910 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886415550] [2020-11-29 19:13:23,910 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 19:13:23,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:23,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 19:13:23,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-29 19:13:23,911 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 14 states. [2020-11-29 19:13:23,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:23,998 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-11-29 19:13:23,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 19:13:23,998 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-11-29 19:13:23,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:23,999 INFO L225 Difference]: With dead ends: 67 [2020-11-29 19:13:23,999 INFO L226 Difference]: Without dead ends: 66 [2020-11-29 19:13:24,000 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 46 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-29 19:13:24,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-29 19:13:24,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-11-29 19:13:24,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-29 19:13:24,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2020-11-29 19:13:24,003 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2020-11-29 19:13:24,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:24,003 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2020-11-29 19:13:24,003 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 19:13:24,003 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2020-11-29 19:13:24,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-29 19:13:24,004 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:24,004 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2020-11-29 19:13:24,204 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-29 19:13:24,204 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:24,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:24,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2020-11-29 19:13:24,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:24,205 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1148017570] [2020-11-29 19:13:24,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:24,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:24,397 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:24,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1148017570] [2020-11-29 19:13:24,398 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [171142502] [2020-11-29 19:13:24,398 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:24,440 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-29 19:13:24,440 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:24,441 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-29 19:13:24,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:24,617 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:24,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:24,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-11-29 19:13:24,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484697816] [2020-11-29 19:13:24,618 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-29 19:13:24,618 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:24,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-29 19:13:24,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-29 19:13:24,619 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 14 states. [2020-11-29 19:13:24,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:24,673 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2020-11-29 19:13:24,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-29 19:13:24,674 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-11-29 19:13:24,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:24,674 INFO L225 Difference]: With dead ends: 69 [2020-11-29 19:13:24,674 INFO L226 Difference]: Without dead ends: 68 [2020-11-29 19:13:24,675 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-29 19:13:24,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-29 19:13:24,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-11-29 19:13:24,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-29 19:13:24,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-11-29 19:13:24,678 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2020-11-29 19:13:24,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:24,678 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-11-29 19:13:24,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-29 19:13:24,678 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-11-29 19:13:24,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-29 19:13:24,678 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:24,679 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1] [2020-11-29 19:13:24,879 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:24,879 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:24,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:24,880 INFO L82 PathProgramCache]: Analyzing trace with hash -598479391, now seen corresponding path program 12 times [2020-11-29 19:13:24,880 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:24,880 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530956436] [2020-11-29 19:13:24,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:25,050 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:25,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530956436] [2020-11-29 19:13:25,051 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389959185] [2020-11-29 19:13:25,051 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:25,084 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-29 19:13:25,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:25,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 19:13:25,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:25,281 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:25,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:25,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-11-29 19:13:25,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316487202] [2020-11-29 19:13:25,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-29 19:13:25,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:25,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-29 19:13:25,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-29 19:13:25,282 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 15 states. [2020-11-29 19:13:25,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:25,371 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-11-29 19:13:25,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 19:13:25,372 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2020-11-29 19:13:25,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:25,373 INFO L225 Difference]: With dead ends: 72 [2020-11-29 19:13:25,373 INFO L226 Difference]: Without dead ends: 71 [2020-11-29 19:13:25,373 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-29 19:13:25,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-29 19:13:25,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-11-29 19:13:25,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-29 19:13:25,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2020-11-29 19:13:25,376 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 63 [2020-11-29 19:13:25,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:25,377 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2020-11-29 19:13:25,377 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-29 19:13:25,377 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2020-11-29 19:13:25,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-11-29 19:13:25,378 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:25,378 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2020-11-29 19:13:25,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-11-29 19:13:25,587 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:25,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:25,588 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2020-11-29 19:13:25,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:25,588 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1052188543] [2020-11-29 19:13:25,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:25,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:25,734 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:25,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1052188543] [2020-11-29 19:13:25,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [185709325] [2020-11-29 19:13:25,734 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:25,764 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-29 19:13:25,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:25,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-29 19:13:25,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:25,966 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:25,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:25,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-11-29 19:13:25,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529356252] [2020-11-29 19:13:25,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-29 19:13:25,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:25,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-29 19:13:25,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-29 19:13:25,968 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 15 states. [2020-11-29 19:13:26,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:26,022 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2020-11-29 19:13:26,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-29 19:13:26,022 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-11-29 19:13:26,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:26,023 INFO L225 Difference]: With dead ends: 74 [2020-11-29 19:13:26,023 INFO L226 Difference]: Without dead ends: 73 [2020-11-29 19:13:26,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 52 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-29 19:13:26,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-29 19:13:26,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-11-29 19:13:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-29 19:13:26,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2020-11-29 19:13:26,027 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2020-11-29 19:13:26,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:26,027 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2020-11-29 19:13:26,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-29 19:13:26,027 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2020-11-29 19:13:26,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-29 19:13:26,028 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:26,028 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1] [2020-11-29 19:13:26,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:26,243 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:26,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:26,244 INFO L82 PathProgramCache]: Analyzing trace with hash -829668561, now seen corresponding path program 13 times [2020-11-29 19:13:26,244 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:26,244 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [21048814] [2020-11-29 19:13:26,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:26,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:26,431 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:26,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [21048814] [2020-11-29 19:13:26,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1502269164] [2020-11-29 19:13:26,432 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:26,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:26,470 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 19:13:26,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:26,710 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:26,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:26,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-11-29 19:13:26,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102698174] [2020-11-29 19:13:26,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 19:13:26,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:26,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 19:13:26,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:13:26,715 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 16 states. [2020-11-29 19:13:26,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:26,798 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2020-11-29 19:13:26,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 19:13:26,798 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-11-29 19:13:26,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:26,799 INFO L225 Difference]: With dead ends: 77 [2020-11-29 19:13:26,799 INFO L226 Difference]: Without dead ends: 76 [2020-11-29 19:13:26,800 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:13:26,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-29 19:13:26,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-11-29 19:13:26,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-29 19:13:26,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2020-11-29 19:13:26,803 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 68 [2020-11-29 19:13:26,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:26,803 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2020-11-29 19:13:26,803 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 19:13:26,803 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2020-11-29 19:13:26,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-29 19:13:26,804 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:26,804 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2020-11-29 19:13:27,006 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-29 19:13:27,007 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:27,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:27,007 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2020-11-29 19:13:27,007 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:27,007 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166501593] [2020-11-29 19:13:27,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:27,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:27,185 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:27,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166501593] [2020-11-29 19:13:27,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [322427577] [2020-11-29 19:13:27,185 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:27,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:27,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-29 19:13:27,223 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:27,412 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:27,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:27,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-11-29 19:13:27,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590323224] [2020-11-29 19:13:27,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-29 19:13:27,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:27,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-29 19:13:27,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:13:27,414 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 16 states. [2020-11-29 19:13:27,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:27,484 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-11-29 19:13:27,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-29 19:13:27,484 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-11-29 19:13:27,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:27,485 INFO L225 Difference]: With dead ends: 79 [2020-11-29 19:13:27,485 INFO L226 Difference]: Without dead ends: 78 [2020-11-29 19:13:27,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-29 19:13:27,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-29 19:13:27,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-11-29 19:13:27,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-29 19:13:27,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-11-29 19:13:27,488 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2020-11-29 19:13:27,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:27,488 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-11-29 19:13:27,488 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-29 19:13:27,488 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-11-29 19:13:27,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-11-29 19:13:27,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:27,489 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1] [2020-11-29 19:13:27,689 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:27,689 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:27,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:27,690 INFO L82 PathProgramCache]: Analyzing trace with hash 274402977, now seen corresponding path program 14 times [2020-11-29 19:13:27,690 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:27,690 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84581637] [2020-11-29 19:13:27,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:27,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:27,903 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:27,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84581637] [2020-11-29 19:13:27,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850961296] [2020-11-29 19:13:27,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:27,952 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:13:27,952 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:27,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 19:13:27,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:28,212 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:28,212 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:28,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-11-29 19:13:28,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984547438] [2020-11-29 19:13:28,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 19:13:28,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:28,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 19:13:28,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-11-29 19:13:28,214 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 17 states. [2020-11-29 19:13:28,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:28,300 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2020-11-29 19:13:28,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 19:13:28,301 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-11-29 19:13:28,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:28,301 INFO L225 Difference]: With dead ends: 82 [2020-11-29 19:13:28,301 INFO L226 Difference]: Without dead ends: 81 [2020-11-29 19:13:28,302 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 58 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-11-29 19:13:28,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-29 19:13:28,303 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-11-29 19:13:28,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-29 19:13:28,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2020-11-29 19:13:28,304 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 73 [2020-11-29 19:13:28,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:28,305 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2020-11-29 19:13:28,305 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 19:13:28,305 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2020-11-29 19:13:28,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-29 19:13:28,306 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:28,306 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2020-11-29 19:13:28,523 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-11-29 19:13:28,523 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:28,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:28,524 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2020-11-29 19:13:28,524 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:28,524 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1186421650] [2020-11-29 19:13:28,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:28,759 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:28,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1186421650] [2020-11-29 19:13:28,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543377691] [2020-11-29 19:13:28,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:28,798 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 19:13:28,798 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:28,799 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-29 19:13:28,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:29,041 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:29,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:29,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-11-29 19:13:29,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538562847] [2020-11-29 19:13:29,042 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-29 19:13:29,042 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:29,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-29 19:13:29,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-11-29 19:13:29,043 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 17 states. [2020-11-29 19:13:29,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:29,109 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2020-11-29 19:13:29,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-29 19:13:29,110 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2020-11-29 19:13:29,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:29,111 INFO L225 Difference]: With dead ends: 84 [2020-11-29 19:13:29,111 INFO L226 Difference]: Without dead ends: 83 [2020-11-29 19:13:29,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-11-29 19:13:29,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-29 19:13:29,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2020-11-29 19:13:29,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-29 19:13:29,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2020-11-29 19:13:29,114 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2020-11-29 19:13:29,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:29,114 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2020-11-29 19:13:29,114 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-29 19:13:29,115 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2020-11-29 19:13:29,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-29 19:13:29,115 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:29,115 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1] [2020-11-29 19:13:29,316 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:29,316 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:29,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:29,316 INFO L82 PathProgramCache]: Analyzing trace with hash -375678353, now seen corresponding path program 15 times [2020-11-29 19:13:29,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:29,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527129599] [2020-11-29 19:13:29,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:29,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:29,581 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:29,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527129599] [2020-11-29 19:13:29,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1706011393] [2020-11-29 19:13:29,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:29,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-29 19:13:29,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:29,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 19:13:29,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:29,899 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:29,899 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:29,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-11-29 19:13:29,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126585712] [2020-11-29 19:13:29,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-29 19:13:29,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:29,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-29 19:13:29,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-29 19:13:29,900 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 18 states. [2020-11-29 19:13:30,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:30,001 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2020-11-29 19:13:30,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 19:13:30,001 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-11-29 19:13:30,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:30,002 INFO L225 Difference]: With dead ends: 87 [2020-11-29 19:13:30,002 INFO L226 Difference]: Without dead ends: 86 [2020-11-29 19:13:30,003 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 62 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-29 19:13:30,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-29 19:13:30,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-11-29 19:13:30,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-29 19:13:30,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2020-11-29 19:13:30,006 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2020-11-29 19:13:30,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:30,006 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2020-11-29 19:13:30,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-29 19:13:30,006 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2020-11-29 19:13:30,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-29 19:13:30,008 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:30,009 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2020-11-29 19:13:30,223 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-11-29 19:13:30,223 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:30,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:30,224 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2020-11-29 19:13:30,224 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:30,224 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345505669] [2020-11-29 19:13:30,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:30,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:30,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345505669] [2020-11-29 19:13:30,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070506721] [2020-11-29 19:13:30,478 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:30,536 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-29 19:13:30,537 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:30,538 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-29 19:13:30,539 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:30,842 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:30,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:30,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-11-29 19:13:30,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080621762] [2020-11-29 19:13:30,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-29 19:13:30,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:30,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-29 19:13:30,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-29 19:13:30,845 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 18 states. [2020-11-29 19:13:30,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:30,927 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2020-11-29 19:13:30,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-29 19:13:30,928 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-11-29 19:13:30,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:30,928 INFO L225 Difference]: With dead ends: 89 [2020-11-29 19:13:30,929 INFO L226 Difference]: Without dead ends: 88 [2020-11-29 19:13:30,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 64 SyntacticMatches, 15 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-29 19:13:30,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-29 19:13:30,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-11-29 19:13:30,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-29 19:13:30,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2020-11-29 19:13:30,932 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2020-11-29 19:13:30,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:30,933 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2020-11-29 19:13:30,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-29 19:13:30,933 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2020-11-29 19:13:30,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-29 19:13:30,933 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:30,934 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1] [2020-11-29 19:13:31,143 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:31,143 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:31,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:31,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1770012513, now seen corresponding path program 16 times [2020-11-29 19:13:31,144 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:31,144 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276217487] [2020-11-29 19:13:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:31,448 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:31,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276217487] [2020-11-29 19:13:31,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054838116] [2020-11-29 19:13:31,448 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:31,489 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:13:31,489 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:31,490 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 19:13:31,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:31,856 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:31,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:31,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-11-29 19:13:31,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745467530] [2020-11-29 19:13:31,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-29 19:13:31,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:31,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-29 19:13:31,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-29 19:13:31,858 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 19 states. [2020-11-29 19:13:31,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:31,977 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2020-11-29 19:13:31,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 19:13:31,977 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2020-11-29 19:13:31,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:31,978 INFO L225 Difference]: With dead ends: 92 [2020-11-29 19:13:31,978 INFO L226 Difference]: Without dead ends: 91 [2020-11-29 19:13:31,978 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 66 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-29 19:13:31,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-29 19:13:31,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-11-29 19:13:31,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-29 19:13:31,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2020-11-29 19:13:31,982 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 83 [2020-11-29 19:13:31,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:31,983 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2020-11-29 19:13:31,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-29 19:13:31,983 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2020-11-29 19:13:31,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-29 19:13:31,984 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:31,984 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2020-11-29 19:13:32,195 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-11-29 19:13:32,195 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:32,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:32,196 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2020-11-29 19:13:32,196 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:32,196 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435131531] [2020-11-29 19:13:32,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:32,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:32,544 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:32,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435131531] [2020-11-29 19:13:32,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303034761] [2020-11-29 19:13:32,545 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:32,597 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 19:13:32,598 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:32,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-29 19:13:32,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:32,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:33,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-11-29 19:13:33,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820827173] [2020-11-29 19:13:33,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-29 19:13:33,001 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:33,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-29 19:13:33,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-29 19:13:33,002 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 19 states. [2020-11-29 19:13:33,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:33,092 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2020-11-29 19:13:33,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-29 19:13:33,093 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2020-11-29 19:13:33,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:33,094 INFO L225 Difference]: With dead ends: 94 [2020-11-29 19:13:33,094 INFO L226 Difference]: Without dead ends: 93 [2020-11-29 19:13:33,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-29 19:13:33,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-29 19:13:33,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-11-29 19:13:33,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-29 19:13:33,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2020-11-29 19:13:33,099 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2020-11-29 19:13:33,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:33,099 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2020-11-29 19:13:33,099 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-29 19:13:33,100 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2020-11-29 19:13:33,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-29 19:13:33,101 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:33,101 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1] [2020-11-29 19:13:33,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-29 19:13:33,311 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:33,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:33,312 INFO L82 PathProgramCache]: Analyzing trace with hash -1344872017, now seen corresponding path program 17 times [2020-11-29 19:13:33,312 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:33,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562856233] [2020-11-29 19:13:33,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:33,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:33,697 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:33,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562856233] [2020-11-29 19:13:33,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [910329262] [2020-11-29 19:13:33,697 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:33,756 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-11-29 19:13:33,756 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:33,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 19:13:33,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:34,180 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:34,180 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-11-29 19:13:34,182 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547730809] [2020-11-29 19:13:34,183 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-29 19:13:34,184 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:34,184 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-29 19:13:34,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-29 19:13:34,185 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 20 states. [2020-11-29 19:13:34,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:34,321 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2020-11-29 19:13:34,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-29 19:13:34,322 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2020-11-29 19:13:34,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:34,323 INFO L225 Difference]: With dead ends: 97 [2020-11-29 19:13:34,323 INFO L226 Difference]: Without dead ends: 96 [2020-11-29 19:13:34,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-29 19:13:34,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-29 19:13:34,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-11-29 19:13:34,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-29 19:13:34,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-11-29 19:13:34,328 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 88 [2020-11-29 19:13:34,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:34,328 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-11-29 19:13:34,328 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-29 19:13:34,328 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-11-29 19:13:34,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-29 19:13:34,329 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:34,329 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2020-11-29 19:13:34,539 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-29 19:13:34,539 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:34,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:34,540 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2020-11-29 19:13:34,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:34,540 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553977517] [2020-11-29 19:13:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:34,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:34,902 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:34,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553977517] [2020-11-29 19:13:34,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727501704] [2020-11-29 19:13:34,903 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:34,970 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-11-29 19:13:34,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:34,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-29 19:13:34,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:35,449 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:35,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:35,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-11-29 19:13:35,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852371756] [2020-11-29 19:13:35,452 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-29 19:13:35,452 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:35,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-29 19:13:35,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-29 19:13:35,454 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 20 states. [2020-11-29 19:13:35,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:35,565 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2020-11-29 19:13:35,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-29 19:13:35,567 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 90 [2020-11-29 19:13:35,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:35,568 INFO L225 Difference]: With dead ends: 99 [2020-11-29 19:13:35,568 INFO L226 Difference]: Without dead ends: 98 [2020-11-29 19:13:35,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-29 19:13:35,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-29 19:13:35,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-11-29 19:13:35,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-29 19:13:35,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2020-11-29 19:13:35,573 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2020-11-29 19:13:35,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:35,573 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2020-11-29 19:13:35,573 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-29 19:13:35,573 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2020-11-29 19:13:35,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-11-29 19:13:35,574 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:35,574 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1] [2020-11-29 19:13:35,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-11-29 19:13:35,799 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:35,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:35,800 INFO L82 PathProgramCache]: Analyzing trace with hash -445677535, now seen corresponding path program 18 times [2020-11-29 19:13:35,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:35,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915378781] [2020-11-29 19:13:35,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:36,243 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:36,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915378781] [2020-11-29 19:13:36,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571865692] [2020-11-29 19:13:36,244 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:36,315 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-11-29 19:13:36,316 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:36,317 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 19:13:36,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:36,790 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:36,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:36,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-29 19:13:36,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662996120] [2020-11-29 19:13:36,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-29 19:13:36,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:36,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-29 19:13:36,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-29 19:13:36,792 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 21 states. [2020-11-29 19:13:36,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:36,939 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2020-11-29 19:13:36,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-29 19:13:36,940 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2020-11-29 19:13:36,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:36,941 INFO L225 Difference]: With dead ends: 102 [2020-11-29 19:13:36,942 INFO L226 Difference]: Without dead ends: 101 [2020-11-29 19:13:36,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-29 19:13:36,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-29 19:13:36,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2020-11-29 19:13:36,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-29 19:13:36,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2020-11-29 19:13:36,947 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 93 [2020-11-29 19:13:36,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:36,947 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2020-11-29 19:13:36,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-29 19:13:36,948 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2020-11-29 19:13:36,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-29 19:13:36,948 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:36,949 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2020-11-29 19:13:37,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-11-29 19:13:37,159 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:37,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:37,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2020-11-29 19:13:37,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:37,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365904980] [2020-11-29 19:13:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:37,496 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:37,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365904980] [2020-11-29 19:13:37,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563172234] [2020-11-29 19:13:37,496 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:37,561 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-11-29 19:13:37,561 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 19:13:37,563 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-29 19:13:37,565 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:38,159 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:38,160 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:38,160 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-29 19:13:38,160 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644734090] [2020-11-29 19:13:38,161 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-29 19:13:38,161 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:38,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-29 19:13:38,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-29 19:13:38,162 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 21 states. [2020-11-29 19:13:38,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:38,271 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2020-11-29 19:13:38,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-29 19:13:38,272 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 95 [2020-11-29 19:13:38,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:38,273 INFO L225 Difference]: With dead ends: 104 [2020-11-29 19:13:38,273 INFO L226 Difference]: Without dead ends: 103 [2020-11-29 19:13:38,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-29 19:13:38,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-29 19:13:38,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2020-11-29 19:13:38,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-29 19:13:38,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2020-11-29 19:13:38,278 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2020-11-29 19:13:38,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:38,278 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2020-11-29 19:13:38,279 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-29 19:13:38,279 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2020-11-29 19:13:38,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-29 19:13:38,279 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:38,280 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1] [2020-11-29 19:13:38,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-29 19:13:38,491 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:38,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:38,492 INFO L82 PathProgramCache]: Analyzing trace with hash -820897553, now seen corresponding path program 19 times [2020-11-29 19:13:38,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:38,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335113544] [2020-11-29 19:13:38,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:38,911 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:38,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335113544] [2020-11-29 19:13:38,911 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761197095] [2020-11-29 19:13:38,912 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 19:13:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:13:38,959 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-29 19:13:38,961 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:13:39,486 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:13:39,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 19:13:39,487 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-11-29 19:13:39,487 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240165512] [2020-11-29 19:13:39,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-29 19:13:39,488 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:13:39,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-29 19:13:39,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-29 19:13:39,489 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 22 states. [2020-11-29 19:13:39,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:13:39,653 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2020-11-29 19:13:39,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-29 19:13:39,654 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2020-11-29 19:13:39,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-29 19:13:39,655 INFO L225 Difference]: With dead ends: 107 [2020-11-29 19:13:39,655 INFO L226 Difference]: Without dead ends: 106 [2020-11-29 19:13:39,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-29 19:13:39,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-29 19:13:39,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-11-29 19:13:39,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-29 19:13:39,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2020-11-29 19:13:39,660 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2020-11-29 19:13:39,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-29 19:13:39,660 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2020-11-29 19:13:39,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-29 19:13:39,661 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2020-11-29 19:13:39,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-29 19:13:39,661 INFO L414 BasicCegarLoop]: Found error trace [2020-11-29 19:13:39,661 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2020-11-29 19:13:39,862 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-11-29 19:13:39,862 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-29 19:13:39,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:13:39,863 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2020-11-29 19:13:39,863 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:13:39,863 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255367733] [2020-11-29 19:13:39,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:13:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:39,881 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:39,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:13:39,902 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:13:39,919 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:13:39,919 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-29 19:13:39,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-11-29 19:13:39,979 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.11 07:13:39 BoogieIcfgContainer [2020-11-29 19:13:39,979 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-29 19:13:39,980 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:13:39,980 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:13:39,980 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:13:39,981 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:13:12" (3/4) ... [2020-11-29 19:13:39,983 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-29 19:13:40,077 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_70c4cb5e-bb86-4d3a-b68b-949163b30326/bin/uautomizer/witness.graphml [2020-11-29 19:13:40,078 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:13:40,080 INFO L168 Benchmark]: Toolchain (without parser) took 28419.01 ms. Allocated memory was 94.4 MB in the beginning and 148.9 MB in the end (delta: 54.5 MB). Free memory was 66.4 MB in the beginning and 62.6 MB in the end (delta: 3.7 MB). Peak memory consumption was 57.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:13:40,081 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 94.4 MB. Free memory is still 52.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:13:40,082 INFO L168 Benchmark]: CACSL2BoogieTranslator took 254.40 ms. Allocated memory is still 94.4 MB. Free memory was 66.2 MB in the beginning and 72.9 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:13:40,084 INFO L168 Benchmark]: Boogie Procedure Inliner took 34.59 ms. Allocated memory is still 94.4 MB. Free memory was 72.9 MB in the beginning and 71.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:13:40,084 INFO L168 Benchmark]: Boogie Preprocessor took 21.25 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 70.6 MB in the end (delta: 977.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:13:40,085 INFO L168 Benchmark]: RCFGBuilder took 274.30 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 62.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:13:40,085 INFO L168 Benchmark]: TraceAbstraction took 27727.20 ms. Allocated memory was 94.4 MB in the beginning and 148.9 MB in the end (delta: 54.5 MB). Free memory was 62.1 MB in the beginning and 65.8 MB in the end (delta: -3.7 MB). Peak memory consumption was 53.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:13:40,086 INFO L168 Benchmark]: Witness Printer took 98.02 ms. Allocated memory is still 148.9 MB. Free memory was 65.8 MB in the beginning and 62.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 19:13:40,088 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 94.4 MB. Free memory is still 52.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 254.40 ms. Allocated memory is still 94.4 MB. Free memory was 66.2 MB in the beginning and 72.9 MB in the end (delta: -6.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 34.59 ms. Allocated memory is still 94.4 MB. Free memory was 72.9 MB in the beginning and 71.6 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 21.25 ms. Allocated memory is still 94.4 MB. Free memory was 71.6 MB in the beginning and 70.6 MB in the end (delta: 977.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 274.30 ms. Allocated memory is still 94.4 MB. Free memory was 70.6 MB in the beginning and 62.6 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 27727.20 ms. Allocated memory was 94.4 MB in the beginning and 148.9 MB in the end (delta: 54.5 MB). Free memory was 62.1 MB in the beginning and 65.8 MB in the end (delta: -3.7 MB). Peak memory consumption was 53.9 MB. Max. memory is 16.1 GB. * Witness Printer took 98.02 ms. Allocated memory is still 148.9 MB. Free memory was 65.8 MB in the beginning and 62.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 20]: integer overflow possible integer overflow possible We found a FailurePath: [L15] int x, y; [L16] x = 1 [L17] y = 1 [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] EXPR 3*y [L20] y = 3*y [L18] COND TRUE x >= 0 [L19] EXPR 2*x [L19] x = 2*x [L20] 3*y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 14 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.5s, OverallIterations: 42, TraceHistogramMax: 20, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 228 SDtfs, 413 SDslu, 1318 SDs, 0 SdLazy, 1445 SolverSat, 55 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2317 GetRequests, 1554 SyntacticMatches, 361 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 11.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=41, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 41 MinimizatonAttempts, 39 StatesRemovedByMinimization, 39 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.1s SatisfiabilityAnalysisTime, 13.7s InterpolantComputationTime, 4022 NumberOfCodeBlocks, 4022 NumberOfCodeBlocksAsserted, 283 NumberOfCheckSat, 3844 ConstructedInterpolants, 0 QuantifiedInterpolants, 753036 SizeOfPredicates, 0 NumberOfNonLiveVariables, 3617 ConjunctsInSsa, 435 ConjunctsInUnsatCore, 78 InterpolantComputations, 4 PerfectInterpolantSequences, 0/23218 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...