./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_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/termination-crafted/NonTermination4.c -s /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:25,431 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:21:25,433 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:21:25,482 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:21:25,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:21:25,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:21:25,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:21:25,489 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:21:25,491 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:21:25,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:21:25,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:21:25,495 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:21:25,496 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:21:25,497 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:21:25,498 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:21:25,500 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:21:25,501 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:21:25,502 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:21:25,504 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:21:25,507 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:21:25,509 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:21:25,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:21:25,512 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:21:25,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:21:25,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:21:25,518 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:21:25,518 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:21:25,519 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:21:25,520 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:21:25,521 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:21:25,522 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:21:25,523 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:21:25,524 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:21:25,525 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:21:25,526 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:21:25,527 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:21:25,527 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:21:25,528 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:21:25,528 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:21:25,529 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:21:25,530 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:21:25,531 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/config/svcomp-Overflow-64bit-Automizer_Default.epf [2020-11-28 03:21:25,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:21:25,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:21:25,556 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:21:25,557 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:21:25,557 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:21:25,557 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:21:25,558 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:21:25,558 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:21:25,559 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:21:25,559 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-28 03:21:25,559 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-28 03:21:25,560 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-28 03:21:25,560 INFO L138 SettingsManager]: * Check absence of signed integer overflows=true [2020-11-28 03:21:25,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:21:25,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:21:25,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-28 03:21:25,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:21:25,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:21:25,563 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-28 03:21:25,563 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-28 03:21:25,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:21:25,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:21:25,564 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-28 03:21:25,564 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-28 03:21:25,564 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:21:25,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-28 03:21:25,565 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-28 03:21:25,565 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:21:25,565 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_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! overflow) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 94b61e96441ca10668b436b4ef10dfd9464f0863 [2020-11-28 03:21:25,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:21:25,816 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:21:25,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:21:25,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:21:25,823 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:21:25,825 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/NonTermination4.c [2020-11-28 03:21:25,928 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/data/201cf5867/1ac8f176ac434f588202f830ff40198c/FLAG43dcfd423 [2020-11-28 03:21:26,346 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:21:26,347 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/sv-benchmarks/c/termination-crafted/NonTermination4.c [2020-11-28 03:21:26,353 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/data/201cf5867/1ac8f176ac434f588202f830ff40198c/FLAG43dcfd423 [2020-11-28 03:21:26,743 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/data/201cf5867/1ac8f176ac434f588202f830ff40198c [2020-11-28 03:21:26,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:21:26,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:21:26,752 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:26,752 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:21:26,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:21:26,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:26" (1/1) ... [2020-11-28 03:21:26,758 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c8c5de8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:26, skipping insertion in model container [2020-11-28 03:21:26,758 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:21:26" (1/1) ... [2020-11-28 03:21:26,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:21:26,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:21:26,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:26,996 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:21:27,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:21:27,033 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:21:27,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27 WrapperNode [2020-11-28 03:21:27,034 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:21:27,035 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:21:27,035 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:21:27,036 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:21:27,043 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,047 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,064 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:21:27,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:21:27,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:21:27,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:21:27,078 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,079 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,080 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,083 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,087 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... [2020-11-28 03:21:27,090 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:21:27,091 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:21:27,092 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:21:27,092 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:21:27,093 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-28 03:21:27,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:21:27,171 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:21:27,316 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:21:27,317 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:21:27,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:27 BoogieIcfgContainer [2020-11-28 03:21:27,318 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:21:27,320 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-28 03:21:27,320 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-28 03:21:27,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-28 03:21:27,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 03:21:26" (1/3) ... [2020-11-28 03:21:27,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f369425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:27, skipping insertion in model container [2020-11-28 03:21:27,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:21:27" (2/3) ... [2020-11-28 03:21:27,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f369425 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 03:21:27, skipping insertion in model container [2020-11-28 03:21:27,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:27" (3/3) ... [2020-11-28 03:21:27,327 INFO L111 eAbstractionObserver]: Analyzing ICFG NonTermination4.c [2020-11-28 03:21:27,337 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-28 03:21:27,341 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-11-28 03:21:27,353 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-11-28 03:21:27,376 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-28 03:21:27,376 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-28 03:21:27,376 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-28 03:21:27,376 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:21:27,376 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:21:27,377 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-28 03:21:27,377 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:21:27,377 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-28 03:21:27,390 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states. [2020-11-28 03:21:27,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2020-11-28 03:21:27,394 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:27,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1] [2020-11-28 03:21:27,395 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:27,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:27,401 INFO L82 PathProgramCache]: Analyzing trace with hash 31073, now seen corresponding path program 1 times [2020-11-28 03:21:27,409 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:27,410 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746272265] [2020-11-28 03:21:27,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:27,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:27,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746272265] [2020-11-28 03:21:27,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:27,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 03:21:27,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169469366] [2020-11-28 03:21:27,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:27,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:27,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:27,537 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:27,539 INFO L87 Difference]: Start difference. First operand 14 states. Second operand 3 states. [2020-11-28 03:21:27,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:27,702 INFO L93 Difference]: Finished difference Result 22 states and 25 transitions. [2020-11-28 03:21:27,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:27,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 3 [2020-11-28 03:21:27,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:27,711 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:21:27,712 INFO L226 Difference]: Without dead ends: 13 [2020-11-28 03:21:27,714 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 [2020-11-28 03:21:27,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-11-28 03:21:27,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-28 03:21:27,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 03:21:27,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-28 03:21:27,745 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 3 [2020-11-28 03:21:27,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:27,745 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-28 03:21:27,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:27,745 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-28 03:21:27,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-11-28 03:21:27,746 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:27,746 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-11-28 03:21:27,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-28 03:21:27,747 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:27,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:27,748 INFO L82 PathProgramCache]: Analyzing trace with hash 963307, now seen corresponding path program 1 times [2020-11-28 03:21:27,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:27,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394049113] [2020-11-28 03:21:27,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:27,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:27,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [394049113] [2020-11-28 03:21:27,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:27,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 03:21:27,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975974195] [2020-11-28 03:21:27,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:27,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:27,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:27,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:27,770 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 3 states. [2020-11-28 03:21:27,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:27,801 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2020-11-28 03:21:27,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:27,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-11-28 03:21:27,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:27,802 INFO L225 Difference]: With dead ends: 12 [2020-11-28 03:21:27,802 INFO L226 Difference]: Without dead ends: 11 [2020-11-28 03:21:27,803 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 [2020-11-28 03:21:27,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-11-28 03:21:27,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-11-28 03:21:27,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-11-28 03:21:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 11 transitions. [2020-11-28 03:21:27,806 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 11 transitions. Word has length 4 [2020-11-28 03:21:27,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:27,807 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 11 transitions. [2020-11-28 03:21:27,807 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:27,807 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 11 transitions. [2020-11-28 03:21:27,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-11-28 03:21:27,808 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:27,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-11-28 03:21:27,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-28 03:21:27,809 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:27,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:27,810 INFO L82 PathProgramCache]: Analyzing trace with hash 29862563, now seen corresponding path program 1 times [2020-11-28 03:21:27,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:27,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264597632] [2020-11-28 03:21:27,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:27,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:27,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:27,856 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264597632] [2020-11-28 03:21:27,856 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:27,856 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 03:21:27,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49865173] [2020-11-28 03:21:27,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:27,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:27,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:27,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:27,859 INFO L87 Difference]: Start difference. First operand 11 states and 11 transitions. Second operand 3 states. [2020-11-28 03:21:27,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:27,890 INFO L93 Difference]: Finished difference Result 15 states and 16 transitions. [2020-11-28 03:21:27,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:27,891 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2020-11-28 03:21:27,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:27,892 INFO L225 Difference]: With dead ends: 15 [2020-11-28 03:21:27,892 INFO L226 Difference]: Without dead ends: 14 [2020-11-28 03:21:27,895 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 [2020-11-28 03:21:27,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2020-11-28 03:21:27,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 13. [2020-11-28 03:21:27,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-11-28 03:21:27,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-11-28 03:21:27,899 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 5 [2020-11-28 03:21:27,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:27,899 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-11-28 03:21:27,899 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:27,900 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-11-28 03:21:27,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-28 03:21:27,900 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:27,900 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-28 03:21:27,901 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-28 03:21:27,901 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:27,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:27,902 INFO L82 PathProgramCache]: Analyzing trace with hash 925739501, now seen corresponding path program 1 times [2020-11-28 03:21:27,902 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:27,902 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442721435] [2020-11-28 03:21:27,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:27,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:27,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:27,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442721435] [2020-11-28 03:21:27,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:21:27,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-28 03:21:27,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17129808] [2020-11-28 03:21:27,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-28 03:21:27,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:27,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-28 03:21:27,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-28 03:21:27,943 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 3 states. [2020-11-28 03:21:27,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:27,958 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-11-28 03:21:27,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-28 03:21:27,960 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 6 [2020-11-28 03:21:27,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:27,960 INFO L225 Difference]: With dead ends: 13 [2020-11-28 03:21:27,960 INFO L226 Difference]: Without dead ends: 12 [2020-11-28 03:21:27,961 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 [2020-11-28 03:21:27,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-11-28 03:21:27,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-11-28 03:21:27,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 03:21:27,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2020-11-28 03:21:27,964 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 6 [2020-11-28 03:21:27,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:27,965 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2020-11-28 03:21:27,965 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-28 03:21:27,965 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2020-11-28 03:21:27,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-11-28 03:21:27,965 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:27,965 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2020-11-28 03:21:27,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-28 03:21:27,966 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:27,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:27,967 INFO L82 PathProgramCache]: Analyzing trace with hash 577431471, now seen corresponding path program 1 times [2020-11-28 03:21:27,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:27,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469752687] [2020-11-28 03:21:27,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:27,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:28,019 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:28,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469752687] [2020-11-28 03:21:28,020 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [489674047] [2020-11-28 03:21:28,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:28,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 17 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:21:28,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:28,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:28,113 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:28,113 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-11-28 03:21:28,113 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827504229] [2020-11-28 03:21:28,113 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:21:28,114 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:28,114 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:21:28,115 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:21:28,115 INFO L87 Difference]: Start difference. First operand 12 states and 12 transitions. Second operand 4 states. [2020-11-28 03:21:28,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:28,144 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2020-11-28 03:21:28,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:21:28,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-11-28 03:21:28,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:28,145 INFO L225 Difference]: With dead ends: 17 [2020-11-28 03:21:28,146 INFO L226 Difference]: Without dead ends: 16 [2020-11-28 03:21:28,146 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 [2020-11-28 03:21:28,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-11-28 03:21:28,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-11-28 03:21:28,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 03:21:28,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-11-28 03:21:28,150 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 8 [2020-11-28 03:21:28,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:28,151 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-11-28 03:21:28,151 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:21:28,151 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-11-28 03:21:28,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-28 03:21:28,151 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:28,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1] [2020-11-28 03:21:28,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:28,352 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:28,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:28,353 INFO L82 PathProgramCache]: Analyzing trace with hash 860863857, now seen corresponding path program 1 times [2020-11-28 03:21:28,353 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:28,354 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895281999] [2020-11-28 03:21:28,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:28,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:28,422 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:28,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895281999] [2020-11-28 03:21:28,423 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535364422] [2020-11-28 03:21:28,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-28 03:21:28,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:28,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 3 conjunts are in the unsatisfiable core [2020-11-28 03:21:28,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:28,476 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:28,476 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:28,476 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2] total 2 [2020-11-28 03:21:28,477 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041943813] [2020-11-28 03:21:28,477 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-28 03:21:28,477 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:28,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:21:28,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:21:28,478 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-11-28 03:21:28,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:28,499 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-11-28 03:21:28,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:21:28,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2020-11-28 03:21:28,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:28,500 INFO L225 Difference]: With dead ends: 19 [2020-11-28 03:21:28,500 INFO L226 Difference]: Without dead ends: 18 [2020-11-28 03:21:28,501 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 [2020-11-28 03:21:28,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-11-28 03:21:28,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-11-28 03:21:28,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-11-28 03:21:28,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-11-28 03:21:28,504 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2020-11-28 03:21:28,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:28,505 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-11-28 03:21:28,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-28 03:21:28,505 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-11-28 03:21:28,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-28 03:21:28,505 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:28,506 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1] [2020-11-28 03:21:28,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:28,706 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:28,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:28,707 INFO L82 PathProgramCache]: Analyzing trace with hash 745486881, now seen corresponding path program 2 times [2020-11-28 03:21:28,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:28,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683417599] [2020-11-28 03:21:28,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:28,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:28,777 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:28,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683417599] [2020-11-28 03:21:28,778 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412394555] [2020-11-28 03:21:28,778 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:28,804 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:21:28,804 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:28,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:21:28,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:28,842 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:28,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:28,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-11-28 03:21:28,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005268416] [2020-11-28 03:21:28,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:21:28,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:28,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:21:28,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:21:28,844 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-11-28 03:21:28,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:28,889 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-11-28 03:21:28,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:21:28,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-28 03:21:28,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:28,890 INFO L225 Difference]: With dead ends: 22 [2020-11-28 03:21:28,890 INFO L226 Difference]: Without dead ends: 21 [2020-11-28 03:21:28,891 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 [2020-11-28 03:21:28,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-28 03:21:28,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-11-28 03:21:28,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-28 03:21:28,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-28 03:21:28,908 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 13 [2020-11-28 03:21:28,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:28,908 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-28 03:21:28,908 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:21:28,908 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-28 03:21:28,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-28 03:21:28,908 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:28,909 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1] [2020-11-28 03:21:29,119 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:29,120 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:29,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:29,120 INFO L82 PathProgramCache]: Analyzing trace with hash -846644381, now seen corresponding path program 2 times [2020-11-28 03:21:29,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:29,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047387470] [2020-11-28 03:21:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:29,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047387470] [2020-11-28 03:21:29,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1889478405] [2020-11-28 03:21:29,178 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:29,202 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:21:29,202 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:29,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:21:29,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:29,240 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:29,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:29,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 3 [2020-11-28 03:21:29,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416360500] [2020-11-28 03:21:29,241 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-28 03:21:29,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:29,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-28 03:21:29,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-28 03:21:29,242 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 5 states. [2020-11-28 03:21:29,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:29,271 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-28 03:21:29,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-28 03:21:29,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-11-28 03:21:29,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:29,272 INFO L225 Difference]: With dead ends: 24 [2020-11-28 03:21:29,272 INFO L226 Difference]: Without dead ends: 23 [2020-11-28 03:21:29,272 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 [2020-11-28 03:21:29,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-28 03:21:29,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-11-28 03:21:29,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-28 03:21:29,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-11-28 03:21:29,276 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 15 [2020-11-28 03:21:29,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:29,276 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-11-28 03:21:29,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-28 03:21:29,277 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-11-28 03:21:29,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-28 03:21:29,277 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:29,277 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 1, 1] [2020-11-28 03:21:29,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:29,488 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:29,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:29,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1960222447, now seen corresponding path program 3 times [2020-11-28 03:21:29,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:29,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1341635306] [2020-11-28 03:21:29,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:29,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:29,538 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:29,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1341635306] [2020-11-28 03:21:29,539 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233866438] [2020-11-28 03:21:29,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-28 03:21:29,577 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-28 03:21:29,577 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:29,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 5 conjunts are in the unsatisfiable core Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:29,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:29,631 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:29,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:29,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-11-28 03:21:29,631 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435749661] [2020-11-28 03:21:29,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:21:29,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:29,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:21:29,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:21:29,633 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2020-11-28 03:21:29,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:29,670 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-28 03:21:29,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:21:29,670 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-28 03:21:29,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:29,671 INFO L225 Difference]: With dead ends: 27 [2020-11-28 03:21:29,671 INFO L226 Difference]: Without dead ends: 26 [2020-11-28 03:21:29,672 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 [2020-11-28 03:21:29,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-28 03:21:29,675 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-11-28 03:21:29,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-11-28 03:21:29,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-11-28 03:21:29,676 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 18 [2020-11-28 03:21:29,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:29,676 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-11-28 03:21:29,676 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:21:29,676 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-11-28 03:21:29,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-11-28 03:21:29,677 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:29,677 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 1, 1] [2020-11-28 03:21:29,877 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:29,878 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:29,878 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:29,878 INFO L82 PathProgramCache]: Analyzing trace with hash -1716869967, now seen corresponding path program 3 times [2020-11-28 03:21:29,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:29,879 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624867358] [2020-11-28 03:21:29,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:29,959 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:29,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624867358] [2020-11-28 03:21:29,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [948995541] [2020-11-28 03:21:29,960 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-28 03:21:29,988 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-11-28 03:21:29,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:29,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:21:29,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:30,030 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:30,030 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:30,030 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-11-28 03:21:30,030 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158055527] [2020-11-28 03:21:30,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-28 03:21:30,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:30,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-28 03:21:30,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-28 03:21:30,045 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 6 states. [2020-11-28 03:21:30,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:30,083 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-11-28 03:21:30,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-28 03:21:30,083 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-11-28 03:21:30,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:30,084 INFO L225 Difference]: With dead ends: 29 [2020-11-28 03:21:30,084 INFO L226 Difference]: Without dead ends: 28 [2020-11-28 03:21:30,084 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 [2020-11-28 03:21:30,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-11-28 03:21:30,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-11-28 03:21:30,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-28 03:21:30,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-11-28 03:21:30,088 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 20 [2020-11-28 03:21:30,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:30,088 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-11-28 03:21:30,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-28 03:21:30,088 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-11-28 03:21:30,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-28 03:21:30,089 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:30,089 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 1, 1] [2020-11-28 03:21:30,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:30,290 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:30,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:30,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1492388577, now seen corresponding path program 4 times [2020-11-28 03:21:30,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:30,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176290390] [2020-11-28 03:21:30,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:30,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:30,374 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:30,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176290390] [2020-11-28 03:21:30,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789822929] [2020-11-28 03:21:30,375 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-28 03:21:30,399 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:21:30,400 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:30,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:21:30,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:30,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:30,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-28 03:21:30,446 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557415539] [2020-11-28 03:21:30,446 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:21:30,447 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:30,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:21:30,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:21:30,447 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 7 states. [2020-11-28 03:21:30,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:30,481 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-11-28 03:21:30,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:21:30,481 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-11-28 03:21:30,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:30,482 INFO L225 Difference]: With dead ends: 32 [2020-11-28 03:21:30,482 INFO L226 Difference]: Without dead ends: 31 [2020-11-28 03:21:30,482 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:21:30,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-28 03:21:30,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-11-28 03:21:30,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-28 03:21:30,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2020-11-28 03:21:30,486 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 23 [2020-11-28 03:21:30,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:30,487 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2020-11-28 03:21:30,487 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:21:30,487 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2020-11-28 03:21:30,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-28 03:21:30,488 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:30,488 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 1, 1] [2020-11-28 03:21:30,688 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:30,688 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:30,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:30,689 INFO L82 PathProgramCache]: Analyzing trace with hash -333652957, now seen corresponding path program 4 times [2020-11-28 03:21:30,689 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:30,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101522392] [2020-11-28 03:21:30,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:30,758 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:30,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101522392] [2020-11-28 03:21:30,759 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631587382] [2020-11-28 03:21:30,759 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-28 03:21:30,795 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:21:30,796 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:30,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:21:30,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:30,849 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:30,849 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:30,849 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-28 03:21:30,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557678286] [2020-11-28 03:21:30,850 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-28 03:21:30,850 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:30,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-28 03:21:30,850 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:21:30,850 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand 7 states. [2020-11-28 03:21:30,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:30,893 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-11-28 03:21:30,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-28 03:21:30,893 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-28 03:21:30,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:30,894 INFO L225 Difference]: With dead ends: 34 [2020-11-28 03:21:30,894 INFO L226 Difference]: Without dead ends: 33 [2020-11-28 03:21:30,894 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-11-28 03:21:30,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-11-28 03:21:30,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-11-28 03:21:30,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 03:21:30,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-11-28 03:21:30,903 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 25 [2020-11-28 03:21:30,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:30,903 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-11-28 03:21:30,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-28 03:21:30,903 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-11-28 03:21:30,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-11-28 03:21:30,904 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:30,904 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1] [2020-11-28 03:21:31,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2020-11-28 03:21:31,105 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:31,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:31,105 INFO L82 PathProgramCache]: Analyzing trace with hash -1300871633, now seen corresponding path program 5 times [2020-11-28 03:21:31,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:31,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904062751] [2020-11-28 03:21:31,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:31,177 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:31,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904062751] [2020-11-28 03:21:31,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1408704066] [2020-11-28 03:21:31,177 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:31,210 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-28 03:21:31,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:31,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:21:31,212 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:31,272 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:31,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:31,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-28 03:21:31,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738264743] [2020-11-28 03:21:31,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:21:31,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:31,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:21:31,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:21:31,274 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 8 states. [2020-11-28 03:21:31,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:31,309 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-11-28 03:21:31,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:21:31,309 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-11-28 03:21:31,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:31,310 INFO L225 Difference]: With dead ends: 37 [2020-11-28 03:21:31,310 INFO L226 Difference]: Without dead ends: 36 [2020-11-28 03:21:31,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 5 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:21:31,310 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-11-28 03:21:31,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-11-28 03:21:31,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-11-28 03:21:31,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-11-28 03:21:31,317 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 28 [2020-11-28 03:21:31,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:31,317 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-11-28 03:21:31,317 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:21:31,317 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-11-28 03:21:31,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-11-28 03:21:31,318 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:31,318 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 1, 1] [2020-11-28 03:21:31,542 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:31,542 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:31,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:31,542 INFO L82 PathProgramCache]: Analyzing trace with hash -302154767, now seen corresponding path program 5 times [2020-11-28 03:21:31,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:31,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757123286] [2020-11-28 03:21:31,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:31,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:31,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757123286] [2020-11-28 03:21:31,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088650472] [2020-11-28 03:21:31,622 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:31,678 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 6 check-sat command(s) [2020-11-28 03:21:31,678 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:31,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-28 03:21:31,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:31,755 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:31,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:31,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2020-11-28 03:21:31,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798381810] [2020-11-28 03:21:31,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-28 03:21:31,756 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:31,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:21:31,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:21:31,757 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 8 states. [2020-11-28 03:21:31,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:31,796 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-11-28 03:21:31,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-28 03:21:31,797 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-11-28 03:21:31,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:31,798 INFO L225 Difference]: With dead ends: 39 [2020-11-28 03:21:31,798 INFO L226 Difference]: Without dead ends: 38 [2020-11-28 03:21:31,798 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 [2020-11-28 03:21:31,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-11-28 03:21:31,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-11-28 03:21:31,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-11-28 03:21:31,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-11-28 03:21:31,802 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 30 [2020-11-28 03:21:31,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:31,802 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-11-28 03:21:31,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-28 03:21:31,802 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-11-28 03:21:31,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-11-28 03:21:31,803 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:31,803 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 6, 1, 1] [2020-11-28 03:21:32,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:32,012 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:32,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:32,012 INFO L82 PathProgramCache]: Analyzing trace with hash 758836129, now seen corresponding path program 6 times [2020-11-28 03:21:32,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:32,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573480774] [2020-11-28 03:21:32,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:32,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:32,096 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:32,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573480774] [2020-11-28 03:21:32,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803073446] [2020-11-28 03:21:32,097 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:32,146 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-28 03:21:32,146 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:32,146 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:21:32,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:32,231 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:32,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:32,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-11-28 03:21:32,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450715458] [2020-11-28 03:21:32,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:21:32,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:32,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:21:32,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:21:32,233 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 9 states. [2020-11-28 03:21:32,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:32,278 INFO L93 Difference]: Finished difference Result 42 states and 42 transitions. [2020-11-28 03:21:32,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:21:32,283 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2020-11-28 03:21:32,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:32,284 INFO L225 Difference]: With dead ends: 42 [2020-11-28 03:21:32,284 INFO L226 Difference]: Without dead ends: 41 [2020-11-28 03:21:32,284 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 [2020-11-28 03:21:32,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-11-28 03:21:32,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-11-28 03:21:32,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-28 03:21:32,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2020-11-28 03:21:32,289 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 33 [2020-11-28 03:21:32,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:32,289 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2020-11-28 03:21:32,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:21:32,289 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2020-11-28 03:21:32,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-11-28 03:21:32,290 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:32,290 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 1, 1] [2020-11-28 03:21:32,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-11-28 03:21:32,500 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:32,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:32,500 INFO L82 PathProgramCache]: Analyzing trace with hash -902918941, now seen corresponding path program 6 times [2020-11-28 03:21:32,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:32,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180538981] [2020-11-28 03:21:32,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:32,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:32,575 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:32,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180538981] [2020-11-28 03:21:32,575 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858588647] [2020-11-28 03:21:32,575 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:32,604 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2020-11-28 03:21:32,604 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:32,605 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:21:32,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:32,713 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:32,713 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:32,713 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2020-11-28 03:21:32,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1394107056] [2020-11-28 03:21:32,714 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-28 03:21:32,714 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:32,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-28 03:21:32,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-11-28 03:21:32,715 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand 9 states. [2020-11-28 03:21:32,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:32,758 INFO L93 Difference]: Finished difference Result 44 states and 44 transitions. [2020-11-28 03:21:32,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-11-28 03:21:32,759 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-11-28 03:21:32,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:32,759 INFO L225 Difference]: With dead ends: 44 [2020-11-28 03:21:32,759 INFO L226 Difference]: Without dead ends: 43 [2020-11-28 03:21:32,760 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 [2020-11-28 03:21:32,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-11-28 03:21:32,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-11-28 03:21:32,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 03:21:32,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-11-28 03:21:32,764 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 35 [2020-11-28 03:21:32,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:32,764 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-11-28 03:21:32,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-28 03:21:32,764 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-11-28 03:21:32,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-11-28 03:21:32,765 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:32,765 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 1, 1] [2020-11-28 03:21:32,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-11-28 03:21:32,976 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:32,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:32,976 INFO L82 PathProgramCache]: Analyzing trace with hash 522050927, now seen corresponding path program 7 times [2020-11-28 03:21:32,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:32,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809727295] [2020-11-28 03:21:32,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:33,080 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:33,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809727295] [2020-11-28 03:21:33,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [124688576] [2020-11-28 03:21:33,081 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:33,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:33,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:21:33,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:33,219 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:33,220 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:33,220 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-28 03:21:33,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821437177] [2020-11-28 03:21:33,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:21:33,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:33,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:21:33,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:21:33,221 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 10 states. [2020-11-28 03:21:33,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:33,275 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2020-11-28 03:21:33,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:21:33,276 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 38 [2020-11-28 03:21:33,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:33,277 INFO L225 Difference]: With dead ends: 47 [2020-11-28 03:21:33,277 INFO L226 Difference]: Without dead ends: 46 [2020-11-28 03:21:33,277 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 [2020-11-28 03:21:33,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-11-28 03:21:33,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-11-28 03:21:33,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-11-28 03:21:33,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 45 transitions. [2020-11-28 03:21:33,281 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 45 transitions. Word has length 38 [2020-11-28 03:21:33,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:33,282 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 45 transitions. [2020-11-28 03:21:33,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:21:33,282 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 45 transitions. [2020-11-28 03:21:33,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-11-28 03:21:33,282 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:33,283 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 1, 1] [2020-11-28 03:21:33,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-11-28 03:21:33,492 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:33,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:33,492 INFO L82 PathProgramCache]: Analyzing trace with hash -820231375, now seen corresponding path program 7 times [2020-11-28 03:21:33,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:33,492 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612498511] [2020-11-28 03:21:33,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:33,587 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:33,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612498511] [2020-11-28 03:21:33,587 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738014478] [2020-11-28 03:21:33,587 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:33,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:33,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-28 03:21:33,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:33,695 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 0 proven. 133 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:33,695 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:33,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2020-11-28 03:21:33,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900648125] [2020-11-28 03:21:33,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-28 03:21:33,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:33,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-28 03:21:33,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-11-28 03:21:33,696 INFO L87 Difference]: Start difference. First operand 45 states and 45 transitions. Second operand 10 states. [2020-11-28 03:21:33,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:33,750 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2020-11-28 03:21:33,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:21:33,751 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-11-28 03:21:33,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:33,751 INFO L225 Difference]: With dead ends: 49 [2020-11-28 03:21:33,751 INFO L226 Difference]: Without dead ends: 48 [2020-11-28 03:21:33,752 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 [2020-11-28 03:21:33,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-11-28 03:21:33,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-11-28 03:21:33,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-11-28 03:21:33,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-11-28 03:21:33,756 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 40 [2020-11-28 03:21:33,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:33,756 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-11-28 03:21:33,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-28 03:21:33,757 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-11-28 03:21:33,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-11-28 03:21:33,757 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:33,757 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 8, 8, 8, 1, 1] [2020-11-28 03:21:33,971 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:33,972 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:33,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:33,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1443898271, now seen corresponding path program 8 times [2020-11-28 03:21:33,972 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:33,972 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039899154] [2020-11-28 03:21:33,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:34,069 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:34,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039899154] [2020-11-28 03:21:34,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [464191085] [2020-11-28 03:21:34,070 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2020-11-28 03:21:34,112 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:21:34,112 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:34,113 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:21:34,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:34,267 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:34,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:34,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-11-28 03:21:34,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159877816] [2020-11-28 03:21:34,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:21:34,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:34,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:21:34,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:21:34,269 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 11 states. [2020-11-28 03:21:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:34,334 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2020-11-28 03:21:34,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 03:21:34,334 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-11-28 03:21:34,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:34,335 INFO L225 Difference]: With dead ends: 52 [2020-11-28 03:21:34,335 INFO L226 Difference]: Without dead ends: 51 [2020-11-28 03:21:34,336 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 34 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:21:34,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-28 03:21:34,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-11-28 03:21:34,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-11-28 03:21:34,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2020-11-28 03:21:34,342 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 43 [2020-11-28 03:21:34,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:34,343 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2020-11-28 03:21:34,343 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:21:34,343 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2020-11-28 03:21:34,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-11-28 03:21:34,344 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:34,344 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 8, 8, 1, 1] [2020-11-28 03:21:34,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:34,556 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:34,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:34,556 INFO L82 PathProgramCache]: Analyzing trace with hash -311800413, now seen corresponding path program 8 times [2020-11-28 03:21:34,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:34,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64929877] [2020-11-28 03:21:34,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:34,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64929877] [2020-11-28 03:21:34,683 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [415114828] [2020-11-28 03:21:34,683 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:34,707 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:21:34,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:34,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 10 conjunts are in the unsatisfiable core [2020-11-28 03:21:34,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:34,847 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 172 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:34,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:34,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2020-11-28 03:21:34,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998642436] [2020-11-28 03:21:34,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-11-28 03:21:34,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:34,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-11-28 03:21:34,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:21:34,849 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand 11 states. [2020-11-28 03:21:34,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:34,889 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2020-11-28 03:21:34,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-11-28 03:21:34,889 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 45 [2020-11-28 03:21:34,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:34,890 INFO L225 Difference]: With dead ends: 54 [2020-11-28 03:21:34,890 INFO L226 Difference]: Without dead ends: 53 [2020-11-28 03:21:34,890 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 36 SyntacticMatches, 8 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-11-28 03:21:34,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-11-28 03:21:34,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-11-28 03:21:34,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-11-28 03:21:34,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-11-28 03:21:34,895 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 45 [2020-11-28 03:21:34,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:34,896 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-11-28 03:21:34,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-11-28 03:21:34,896 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-11-28 03:21:34,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-11-28 03:21:34,897 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:34,897 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 9, 9, 9, 1, 1] [2020-11-28 03:21:35,108 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:35,108 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:35,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:35,108 INFO L82 PathProgramCache]: Analyzing trace with hash 1168204975, now seen corresponding path program 9 times [2020-11-28 03:21:35,109 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:35,109 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347770642] [2020-11-28 03:21:35,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:35,231 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:35,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347770642] [2020-11-28 03:21:35,232 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978221928] [2020-11-28 03:21:35,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:35,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-28 03:21:35,260 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:35,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:21:35,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:35,411 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:35,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:35,412 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-11-28 03:21:35,412 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220772811] [2020-11-28 03:21:35,415 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 03:21:35,415 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:35,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 03:21:35,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:21:35,416 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 12 states. [2020-11-28 03:21:35,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:35,484 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2020-11-28 03:21:35,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:21:35,484 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 48 [2020-11-28 03:21:35,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:35,485 INFO L225 Difference]: With dead ends: 57 [2020-11-28 03:21:35,485 INFO L226 Difference]: Without dead ends: 56 [2020-11-28 03:21:35,486 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 38 SyntacticMatches, 9 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:21:35,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-11-28 03:21:35,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-11-28 03:21:35,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-11-28 03:21:35,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 55 transitions. [2020-11-28 03:21:35,502 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 55 transitions. Word has length 48 [2020-11-28 03:21:35,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:35,503 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 55 transitions. [2020-11-28 03:21:35,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 03:21:35,503 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 55 transitions. [2020-11-28 03:21:35,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-11-28 03:21:35,504 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:35,504 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 9, 9, 1, 1] [2020-11-28 03:21:35,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2020-11-28 03:21:35,705 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:35,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:35,706 INFO L82 PathProgramCache]: Analyzing trace with hash 1658518129, now seen corresponding path program 9 times [2020-11-28 03:21:35,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:35,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719018431] [2020-11-28 03:21:35,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:35,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:35,875 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:35,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719018431] [2020-11-28 03:21:35,876 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522693614] [2020-11-28 03:21:35,876 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:35,923 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2020-11-28 03:21:35,924 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:35,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-28 03:21:35,929 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:36,100 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 0 proven. 216 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:36,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:36,101 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2020-11-28 03:21:36,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419729170] [2020-11-28 03:21:36,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-11-28 03:21:36,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:36,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-11-28 03:21:36,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2020-11-28 03:21:36,102 INFO L87 Difference]: Start difference. First operand 55 states and 55 transitions. Second operand 12 states. [2020-11-28 03:21:36,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:36,165 INFO L93 Difference]: Finished difference Result 59 states and 59 transitions. [2020-11-28 03:21:36,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-28 03:21:36,168 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 50 [2020-11-28 03:21:36,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:36,168 INFO L225 Difference]: With dead ends: 59 [2020-11-28 03:21:36,169 INFO L226 Difference]: Without dead ends: 58 [2020-11-28 03:21:36,169 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 [2020-11-28 03:21:36,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-11-28 03:21:36,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-11-28 03:21:36,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-11-28 03:21:36,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-11-28 03:21:36,173 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 50 [2020-11-28 03:21:36,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:36,174 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-11-28 03:21:36,174 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-11-28 03:21:36,174 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-11-28 03:21:36,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-11-28 03:21:36,174 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:36,175 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 1, 1] [2020-11-28 03:21:36,375 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-11-28 03:21:36,375 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:36,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:36,376 INFO L82 PathProgramCache]: Analyzing trace with hash -390144735, now seen corresponding path program 10 times [2020-11-28 03:21:36,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:36,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878654053] [2020-11-28 03:21:36,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:36,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:36,536 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:36,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878654053] [2020-11-28 03:21:36,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [678949924] [2020-11-28 03:21:36,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:36,574 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:21:36,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:36,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:21:36,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:36,731 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:36,731 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:36,731 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-11-28 03:21:36,731 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375809127] [2020-11-28 03:21:36,732 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:21:36,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:36,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:21:36,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:21:36,733 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 13 states. [2020-11-28 03:21:36,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:36,799 INFO L93 Difference]: Finished difference Result 62 states and 62 transitions. [2020-11-28 03:21:36,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:21:36,800 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-11-28 03:21:36,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:36,801 INFO L225 Difference]: With dead ends: 62 [2020-11-28 03:21:36,801 INFO L226 Difference]: Without dead ends: 61 [2020-11-28 03:21:36,801 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 [2020-11-28 03:21:36,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-11-28 03:21:36,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-11-28 03:21:36,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-28 03:21:36,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 60 transitions. [2020-11-28 03:21:36,805 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 60 transitions. Word has length 53 [2020-11-28 03:21:36,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:36,806 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 60 transitions. [2020-11-28 03:21:36,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:21:36,806 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 60 transitions. [2020-11-28 03:21:36,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-11-28 03:21:36,809 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:36,809 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 10, 10, 1, 1] [2020-11-28 03:21:37,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2020-11-28 03:21:37,020 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:37,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:37,020 INFO L82 PathProgramCache]: Analyzing trace with hash -1266934173, now seen corresponding path program 10 times [2020-11-28 03:21:37,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:37,021 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23492955] [2020-11-28 03:21:37,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:37,184 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:37,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23492955] [2020-11-28 03:21:37,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601927266] [2020-11-28 03:21:37,185 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:37,227 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:21:37,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:37,228 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 12 conjunts are in the unsatisfiable core [2020-11-28 03:21:37,229 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:37,430 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 265 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:37,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:37,431 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2020-11-28 03:21:37,431 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560191278] [2020-11-28 03:21:37,431 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-11-28 03:21:37,431 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:37,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-11-28 03:21:37,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2020-11-28 03:21:37,432 INFO L87 Difference]: Start difference. First operand 60 states and 60 transitions. Second operand 13 states. [2020-11-28 03:21:37,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:37,472 INFO L93 Difference]: Finished difference Result 64 states and 64 transitions. [2020-11-28 03:21:37,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-11-28 03:21:37,473 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 55 [2020-11-28 03:21:37,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:37,474 INFO L225 Difference]: With dead ends: 64 [2020-11-28 03:21:37,474 INFO L226 Difference]: Without dead ends: 63 [2020-11-28 03:21:37,474 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 [2020-11-28 03:21:37,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-11-28 03:21:37,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-11-28 03:21:37,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-11-28 03:21:37,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-11-28 03:21:37,478 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 55 [2020-11-28 03:21:37,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:37,478 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-11-28 03:21:37,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-11-28 03:21:37,479 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-11-28 03:21:37,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-11-28 03:21:37,479 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:37,479 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 11, 11, 11, 1, 1] [2020-11-28 03:21:37,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2020-11-28 03:21:37,696 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:37,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:37,696 INFO L82 PathProgramCache]: Analyzing trace with hash 936696815, now seen corresponding path program 11 times [2020-11-28 03:21:37,696 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:37,696 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936822626] [2020-11-28 03:21:37,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:37,849 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:37,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936822626] [2020-11-28 03:21:37,849 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493398280] [2020-11-28 03:21:37,849 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:37,890 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-28 03:21:37,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:37,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 03:21:37,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:38,070 INFO L134 CoverageAnalysis]: Checked inductivity of 297 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:38,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:38,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-11-28 03:21:38,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568828998] [2020-11-28 03:21:38,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 03:21:38,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:38,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 03:21:38,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:21:38,074 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 14 states. [2020-11-28 03:21:38,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:38,135 INFO L93 Difference]: Finished difference Result 67 states and 67 transitions. [2020-11-28 03:21:38,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 03:21:38,135 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-11-28 03:21:38,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:38,136 INFO L225 Difference]: With dead ends: 67 [2020-11-28 03:21:38,136 INFO L226 Difference]: Without dead ends: 66 [2020-11-28 03:21:38,136 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 [2020-11-28 03:21:38,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-11-28 03:21:38,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-11-28 03:21:38,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-11-28 03:21:38,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 65 transitions. [2020-11-28 03:21:38,140 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 65 transitions. Word has length 58 [2020-11-28 03:21:38,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:38,140 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 65 transitions. [2020-11-28 03:21:38,140 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 03:21:38,140 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 65 transitions. [2020-11-28 03:21:38,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-11-28 03:21:38,141 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:38,141 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 11, 1, 1] [2020-11-28 03:21:38,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2020-11-28 03:21:38,356 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:38,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:38,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1777491535, now seen corresponding path program 11 times [2020-11-28 03:21:38,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:38,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451119649] [2020-11-28 03:21:38,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:38,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:38,546 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:38,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451119649] [2020-11-28 03:21:38,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [832552837] [2020-11-28 03:21:38,546 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:38,583 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2020-11-28 03:21:38,583 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:38,584 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-28 03:21:38,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:38,740 INFO L134 CoverageAnalysis]: Checked inductivity of 319 backedges. 0 proven. 319 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:38,740 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:38,740 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 12 [2020-11-28 03:21:38,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249366089] [2020-11-28 03:21:38,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-11-28 03:21:38,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:38,741 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-11-28 03:21:38,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:21:38,742 INFO L87 Difference]: Start difference. First operand 65 states and 65 transitions. Second operand 14 states. [2020-11-28 03:21:38,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:38,817 INFO L93 Difference]: Finished difference Result 69 states and 69 transitions. [2020-11-28 03:21:38,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-11-28 03:21:38,818 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 60 [2020-11-28 03:21:38,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:38,819 INFO L225 Difference]: With dead ends: 69 [2020-11-28 03:21:38,819 INFO L226 Difference]: Without dead ends: 68 [2020-11-28 03:21:38,819 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 48 SyntacticMatches, 11 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=91, Unknown=0, NotChecked=0, Total=182 [2020-11-28 03:21:38,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-11-28 03:21:38,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-11-28 03:21:38,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-11-28 03:21:38,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-11-28 03:21:38,823 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 60 [2020-11-28 03:21:38,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:38,823 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-11-28 03:21:38,824 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-11-28 03:21:38,824 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-11-28 03:21:38,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-11-28 03:21:38,825 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:38,825 INFO L422 BasicCegarLoop]: trace histogram [13, 12, 12, 12, 12, 1, 1] [2020-11-28 03:21:39,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,23 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:39,036 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:39,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:39,036 INFO L82 PathProgramCache]: Analyzing trace with hash -598479391, now seen corresponding path program 12 times [2020-11-28 03:21:39,036 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:39,036 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105176437] [2020-11-28 03:21:39,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:39,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,231 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:39,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105176437] [2020-11-28 03:21:39,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575320829] [2020-11-28 03:21:39,231 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:39,274 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-28 03:21:39,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:39,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:21:39,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:39,460 INFO L134 CoverageAnalysis]: Checked inductivity of 354 backedges. 0 proven. 354 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:39,461 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:39,461 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-11-28 03:21:39,461 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946968252] [2020-11-28 03:21:39,461 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-28 03:21:39,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:39,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-28 03:21:39,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:21:39,462 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 15 states. [2020-11-28 03:21:39,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:39,559 INFO L93 Difference]: Finished difference Result 72 states and 72 transitions. [2020-11-28 03:21:39,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 03:21:39,560 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 63 [2020-11-28 03:21:39,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:39,560 INFO L225 Difference]: With dead ends: 72 [2020-11-28 03:21:39,561 INFO L226 Difference]: Without dead ends: 71 [2020-11-28 03:21:39,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 50 SyntacticMatches, 12 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:21:39,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-11-28 03:21:39,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-11-28 03:21:39,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-11-28 03:21:39,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 70 transitions. [2020-11-28 03:21:39,565 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 70 transitions. Word has length 63 [2020-11-28 03:21:39,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:39,566 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 70 transitions. [2020-11-28 03:21:39,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-28 03:21:39,566 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 70 transitions. [2020-11-28 03:21:39,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-11-28 03:21:39,567 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:39,567 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 1, 1] [2020-11-28 03:21:39,783 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2020-11-28 03:21:39,784 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:39,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:39,784 INFO L82 PathProgramCache]: Analyzing trace with hash 386924323, now seen corresponding path program 12 times [2020-11-28 03:21:39,784 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:39,784 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502992292] [2020-11-28 03:21:39,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:39,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:39,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502992292] [2020-11-28 03:21:39,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [926920103] [2020-11-28 03:21:39,941 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:39,971 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2020-11-28 03:21:39,971 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:39,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-28 03:21:39,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:40,197 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:40,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:40,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 13 [2020-11-28 03:21:40,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698899268] [2020-11-28 03:21:40,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-11-28 03:21:40,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:40,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-11-28 03:21:40,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=105, Invalid=105, Unknown=0, NotChecked=0, Total=210 [2020-11-28 03:21:40,200 INFO L87 Difference]: Start difference. First operand 70 states and 70 transitions. Second operand 15 states. [2020-11-28 03:21:40,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:40,248 INFO L93 Difference]: Finished difference Result 74 states and 74 transitions. [2020-11-28 03:21:40,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-11-28 03:21:40,248 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-11-28 03:21:40,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:40,249 INFO L225 Difference]: With dead ends: 74 [2020-11-28 03:21:40,249 INFO L226 Difference]: Without dead ends: 73 [2020-11-28 03:21:40,250 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 [2020-11-28 03:21:40,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-11-28 03:21:40,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-11-28 03:21:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-11-28 03:21:40,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 72 transitions. [2020-11-28 03:21:40,253 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 72 transitions. Word has length 65 [2020-11-28 03:21:40,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:40,253 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 72 transitions. [2020-11-28 03:21:40,253 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-11-28 03:21:40,253 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 72 transitions. [2020-11-28 03:21:40,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-11-28 03:21:40,253 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:40,253 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 13, 13, 1, 1] [2020-11-28 03:21:40,454 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,25 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:40,454 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:40,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:40,455 INFO L82 PathProgramCache]: Analyzing trace with hash -829668561, now seen corresponding path program 13 times [2020-11-28 03:21:40,455 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:40,455 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215513098] [2020-11-28 03:21:40,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:40,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,660 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:40,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215513098] [2020-11-28 03:21:40,661 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381781919] [2020-11-28 03:21:40,661 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:40,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 03:21:40,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:41,016 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 0 proven. 416 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:41,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:41,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-11-28 03:21:41,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343817838] [2020-11-28 03:21:41,019 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-28 03:21:41,020 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:41,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-28 03:21:41,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:21:41,022 INFO L87 Difference]: Start difference. First operand 72 states and 72 transitions. Second operand 16 states. [2020-11-28 03:21:41,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:41,123 INFO L93 Difference]: Finished difference Result 77 states and 77 transitions. [2020-11-28 03:21:41,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-28 03:21:41,124 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-11-28 03:21:41,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:41,125 INFO L225 Difference]: With dead ends: 77 [2020-11-28 03:21:41,125 INFO L226 Difference]: Without dead ends: 76 [2020-11-28 03:21:41,126 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 54 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:21:41,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-11-28 03:21:41,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-11-28 03:21:41,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-11-28 03:21:41,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 75 transitions. [2020-11-28 03:21:41,130 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 75 transitions. Word has length 68 [2020-11-28 03:21:41,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:41,131 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 75 transitions. [2020-11-28 03:21:41,131 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-28 03:21:41,131 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 75 transitions. [2020-11-28 03:21:41,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-11-28 03:21:41,132 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:41,133 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 13, 13, 1, 1] [2020-11-28 03:21:41,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2020-11-28 03:21:41,348 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:41,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:41,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1552431345, now seen corresponding path program 13 times [2020-11-28 03:21:41,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:41,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235274348] [2020-11-28 03:21:41,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:41,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:41,588 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:41,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235274348] [2020-11-28 03:21:41,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2082250838] [2020-11-28 03:21:41,589 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:41,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 15 conjunts are in the unsatisfiable core [2020-11-28 03:21:41,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:41,909 INFO L134 CoverageAnalysis]: Checked inductivity of 442 backedges. 0 proven. 442 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:41,909 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:41,909 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 14 [2020-11-28 03:21:41,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984416733] [2020-11-28 03:21:41,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-11-28 03:21:41,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:41,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-11-28 03:21:41,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:21:41,912 INFO L87 Difference]: Start difference. First operand 75 states and 75 transitions. Second operand 16 states. [2020-11-28 03:21:41,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:41,982 INFO L93 Difference]: Finished difference Result 79 states and 79 transitions. [2020-11-28 03:21:41,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-11-28 03:21:41,982 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 70 [2020-11-28 03:21:41,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:41,983 INFO L225 Difference]: With dead ends: 79 [2020-11-28 03:21:41,983 INFO L226 Difference]: Without dead ends: 78 [2020-11-28 03:21:41,983 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 56 SyntacticMatches, 13 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=120, Unknown=0, NotChecked=0, Total=240 [2020-11-28 03:21:41,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-11-28 03:21:41,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-11-28 03:21:41,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-11-28 03:21:41,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 77 transitions. [2020-11-28 03:21:41,988 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 77 transitions. Word has length 70 [2020-11-28 03:21:41,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:41,988 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 77 transitions. [2020-11-28 03:21:41,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-11-28 03:21:41,988 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 77 transitions. [2020-11-28 03:21:41,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-11-28 03:21:41,989 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:41,990 INFO L422 BasicCegarLoop]: trace histogram [15, 14, 14, 14, 14, 1, 1] [2020-11-28 03:21:42,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,27 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:42,212 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:42,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:42,212 INFO L82 PathProgramCache]: Analyzing trace with hash 274402977, now seen corresponding path program 14 times [2020-11-28 03:21:42,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:42,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870113701] [2020-11-28 03:21:42,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:42,419 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:42,419 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870113701] [2020-11-28 03:21:42,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1264887775] [2020-11-28 03:21:42,420 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:42,457 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:21:42,457 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:42,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-28 03:21:42,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:42,697 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 0 proven. 483 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:42,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:42,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-11-28 03:21:42,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101227892] [2020-11-28 03:21:42,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-28 03:21:42,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:42,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-28 03:21:42,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:21:42,701 INFO L87 Difference]: Start difference. First operand 77 states and 77 transitions. Second operand 17 states. [2020-11-28 03:21:42,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:42,787 INFO L93 Difference]: Finished difference Result 82 states and 82 transitions. [2020-11-28 03:21:42,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-28 03:21:42,787 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 73 [2020-11-28 03:21:42,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:42,788 INFO L225 Difference]: With dead ends: 82 [2020-11-28 03:21:42,788 INFO L226 Difference]: Without dead ends: 81 [2020-11-28 03:21:42,789 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 [2020-11-28 03:21:42,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-11-28 03:21:42,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 80. [2020-11-28 03:21:42,791 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-11-28 03:21:42,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 80 transitions. [2020-11-28 03:21:42,792 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 80 transitions. Word has length 73 [2020-11-28 03:21:42,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:42,792 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 80 transitions. [2020-11-28 03:21:42,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-28 03:21:42,792 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 80 transitions. [2020-11-28 03:21:42,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-11-28 03:21:42,793 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:42,793 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 14, 14, 1, 1] [2020-11-28 03:21:43,005 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2020-11-28 03:21:43,006 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:43,006 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:43,006 INFO L82 PathProgramCache]: Analyzing trace with hash 1708257251, now seen corresponding path program 14 times [2020-11-28 03:21:43,006 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:43,006 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138606445] [2020-11-28 03:21:43,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:43,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:43,236 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:43,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138606445] [2020-11-28 03:21:43,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048261890] [2020-11-28 03:21:43,236 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:43,273 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-28 03:21:43,274 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:43,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 16 conjunts are in the unsatisfiable core [2020-11-28 03:21:43,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:43,521 INFO L134 CoverageAnalysis]: Checked inductivity of 511 backedges. 0 proven. 511 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:43,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:43,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15] total 15 [2020-11-28 03:21:43,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973068480] [2020-11-28 03:21:43,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-11-28 03:21:43,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:43,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-11-28 03:21:43,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:21:43,523 INFO L87 Difference]: Start difference. First operand 80 states and 80 transitions. Second operand 17 states. [2020-11-28 03:21:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:43,591 INFO L93 Difference]: Finished difference Result 84 states and 84 transitions. [2020-11-28 03:21:43,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-11-28 03:21:43,592 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2020-11-28 03:21:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:43,593 INFO L225 Difference]: With dead ends: 84 [2020-11-28 03:21:43,593 INFO L226 Difference]: Without dead ends: 83 [2020-11-28 03:21:43,593 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 60 SyntacticMatches, 14 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2020-11-28 03:21:43,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-11-28 03:21:43,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 82. [2020-11-28 03:21:43,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-11-28 03:21:43,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 82 transitions. [2020-11-28 03:21:43,597 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 82 transitions. Word has length 75 [2020-11-28 03:21:43,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:43,597 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 82 transitions. [2020-11-28 03:21:43,597 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-11-28 03:21:43,597 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 82 transitions. [2020-11-28 03:21:43,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-11-28 03:21:43,598 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:43,598 INFO L422 BasicCegarLoop]: trace histogram [16, 15, 15, 15, 15, 1, 1] [2020-11-28 03:21:43,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,29 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:43,808 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:43,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:43,809 INFO L82 PathProgramCache]: Analyzing trace with hash -375678353, now seen corresponding path program 15 times [2020-11-28 03:21:43,809 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:43,809 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577565271] [2020-11-28 03:21:43,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:44,066 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:44,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577565271] [2020-11-28 03:21:44,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1053852409] [2020-11-28 03:21:44,066 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:44,113 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-28 03:21:44,113 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:44,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 03:21:44,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:44,396 INFO L134 CoverageAnalysis]: Checked inductivity of 555 backedges. 0 proven. 555 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:44,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:44,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-11-28 03:21:44,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924710662] [2020-11-28 03:21:44,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-28 03:21:44,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:44,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-28 03:21:44,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:21:44,399 INFO L87 Difference]: Start difference. First operand 82 states and 82 transitions. Second operand 18 states. [2020-11-28 03:21:44,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:44,487 INFO L93 Difference]: Finished difference Result 87 states and 87 transitions. [2020-11-28 03:21:44,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-28 03:21:44,488 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 78 [2020-11-28 03:21:44,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:44,489 INFO L225 Difference]: With dead ends: 87 [2020-11-28 03:21:44,489 INFO L226 Difference]: Without dead ends: 86 [2020-11-28 03:21:44,489 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 [2020-11-28 03:21:44,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-11-28 03:21:44,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-11-28 03:21:44,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-11-28 03:21:44,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 85 transitions. [2020-11-28 03:21:44,493 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 85 transitions. Word has length 78 [2020-11-28 03:21:44,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:44,493 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 85 transitions. [2020-11-28 03:21:44,494 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-28 03:21:44,494 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 85 transitions. [2020-11-28 03:21:44,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-11-28 03:21:44,494 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:44,494 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 15, 15, 1, 1] [2020-11-28 03:21:44,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2020-11-28 03:21:44,716 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:44,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:44,716 INFO L82 PathProgramCache]: Analyzing trace with hash -249642959, now seen corresponding path program 15 times [2020-11-28 03:21:44,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:44,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143254267] [2020-11-28 03:21:44,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:44,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:44,958 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:44,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143254267] [2020-11-28 03:21:44,958 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [350153966] [2020-11-28 03:21:44,958 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:45,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2020-11-28 03:21:45,008 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:45,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 17 conjunts are in the unsatisfiable core [2020-11-28 03:21:45,011 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:45,297 INFO L134 CoverageAnalysis]: Checked inductivity of 585 backedges. 0 proven. 585 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:45,297 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:45,297 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 16 [2020-11-28 03:21:45,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812307530] [2020-11-28 03:21:45,298 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-11-28 03:21:45,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:45,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-11-28 03:21:45,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=153, Invalid=153, Unknown=0, NotChecked=0, Total=306 [2020-11-28 03:21:45,299 INFO L87 Difference]: Start difference. First operand 85 states and 85 transitions. Second operand 18 states. [2020-11-28 03:21:45,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:45,366 INFO L93 Difference]: Finished difference Result 89 states and 89 transitions. [2020-11-28 03:21:45,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-11-28 03:21:45,367 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 80 [2020-11-28 03:21:45,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:45,368 INFO L225 Difference]: With dead ends: 89 [2020-11-28 03:21:45,368 INFO L226 Difference]: Without dead ends: 88 [2020-11-28 03:21:45,368 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 [2020-11-28 03:21:45,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-11-28 03:21:45,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-11-28 03:21:45,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-11-28 03:21:45,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 87 transitions. [2020-11-28 03:21:45,372 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 87 transitions. Word has length 80 [2020-11-28 03:21:45,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:45,373 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 87 transitions. [2020-11-28 03:21:45,373 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-11-28 03:21:45,373 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 87 transitions. [2020-11-28 03:21:45,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-11-28 03:21:45,373 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:45,374 INFO L422 BasicCegarLoop]: trace histogram [17, 16, 16, 16, 16, 1, 1] [2020-11-28 03:21:45,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,31 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:21:45,574 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:45,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:45,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1770012513, now seen corresponding path program 16 times [2020-11-28 03:21:45,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:45,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75373343] [2020-11-28 03:21:45,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:45,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:45,854 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:45,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75373343] [2020-11-28 03:21:45,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1086144246] [2020-11-28 03:21:45,854 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:45,897 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:21:45,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:45,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-28 03:21:45,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 632 backedges. 0 proven. 632 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:46,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:46,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-11-28 03:21:46,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606597442] [2020-11-28 03:21:46,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-28 03:21:46,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:46,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-28 03:21:46,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-28 03:21:46,234 INFO L87 Difference]: Start difference. First operand 87 states and 87 transitions. Second operand 19 states. [2020-11-28 03:21:46,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:46,329 INFO L93 Difference]: Finished difference Result 92 states and 92 transitions. [2020-11-28 03:21:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-28 03:21:46,329 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 83 [2020-11-28 03:21:46,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:46,331 INFO L225 Difference]: With dead ends: 92 [2020-11-28 03:21:46,331 INFO L226 Difference]: Without dead ends: 91 [2020-11-28 03:21:46,331 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 [2020-11-28 03:21:46,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-11-28 03:21:46,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 90. [2020-11-28 03:21:46,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-11-28 03:21:46,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 90 transitions. [2020-11-28 03:21:46,335 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 90 transitions. Word has length 83 [2020-11-28 03:21:46,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:46,336 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 90 transitions. [2020-11-28 03:21:46,336 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-28 03:21:46,336 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 90 transitions. [2020-11-28 03:21:46,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-11-28 03:21:46,337 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:46,337 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 16, 16, 1, 1] [2020-11-28 03:21:46,547 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2020-11-28 03:21:46,548 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:46,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:46,548 INFO L82 PathProgramCache]: Analyzing trace with hash 174977187, now seen corresponding path program 16 times [2020-11-28 03:21:46,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:46,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345926028] [2020-11-28 03:21:46,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:46,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:46,823 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:46,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345926028] [2020-11-28 03:21:46,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615702326] [2020-11-28 03:21:46,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:46,865 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-28 03:21:46,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:46,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 18 conjunts are in the unsatisfiable core [2020-11-28 03:21:46,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:47,167 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 0 proven. 664 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:47,167 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:47,167 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 17 [2020-11-28 03:21:47,168 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385042389] [2020-11-28 03:21:47,168 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-11-28 03:21:47,168 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:47,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-11-28 03:21:47,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-28 03:21:47,169 INFO L87 Difference]: Start difference. First operand 90 states and 90 transitions. Second operand 19 states. [2020-11-28 03:21:47,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:47,233 INFO L93 Difference]: Finished difference Result 94 states and 94 transitions. [2020-11-28 03:21:47,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-11-28 03:21:47,234 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 85 [2020-11-28 03:21:47,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:47,235 INFO L225 Difference]: With dead ends: 94 [2020-11-28 03:21:47,235 INFO L226 Difference]: Without dead ends: 93 [2020-11-28 03:21:47,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 68 SyntacticMatches, 16 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=171, Invalid=171, Unknown=0, NotChecked=0, Total=342 [2020-11-28 03:21:47,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-11-28 03:21:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 92. [2020-11-28 03:21:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-11-28 03:21:47,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 92 transitions. [2020-11-28 03:21:47,240 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 92 transitions. Word has length 85 [2020-11-28 03:21:47,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:47,240 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 92 transitions. [2020-11-28 03:21:47,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-11-28 03:21:47,240 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 92 transitions. [2020-11-28 03:21:47,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-11-28 03:21:47,241 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:47,241 INFO L422 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 1, 1] [2020-11-28 03:21:47,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-11-28 03:21:47,442 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:47,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:47,442 INFO L82 PathProgramCache]: Analyzing trace with hash -1344872017, now seen corresponding path program 17 times [2020-11-28 03:21:47,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:47,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516829558] [2020-11-28 03:21:47,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:47,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:47,748 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:47,748 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516829558] [2020-11-28 03:21:47,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [757785070] [2020-11-28 03:21:47,749 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:47,810 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-11-28 03:21:47,810 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:47,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-28 03:21:47,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:48,153 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 0 proven. 714 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:48,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:48,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-11-28 03:21:48,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383377068] [2020-11-28 03:21:48,156 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-28 03:21:48,156 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:48,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-28 03:21:48,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-28 03:21:48,157 INFO L87 Difference]: Start difference. First operand 92 states and 92 transitions. Second operand 20 states. [2020-11-28 03:21:48,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:48,248 INFO L93 Difference]: Finished difference Result 97 states and 97 transitions. [2020-11-28 03:21:48,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-28 03:21:48,249 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 88 [2020-11-28 03:21:48,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:48,250 INFO L225 Difference]: With dead ends: 97 [2020-11-28 03:21:48,250 INFO L226 Difference]: Without dead ends: 96 [2020-11-28 03:21:48,250 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 70 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-28 03:21:48,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-11-28 03:21:48,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-11-28 03:21:48,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-11-28 03:21:48,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 95 transitions. [2020-11-28 03:21:48,255 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 95 transitions. Word has length 88 [2020-11-28 03:21:48,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:48,255 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 95 transitions. [2020-11-28 03:21:48,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-28 03:21:48,255 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 95 transitions. [2020-11-28 03:21:48,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-11-28 03:21:48,256 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:48,256 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 17, 17, 1, 1] [2020-11-28 03:21:48,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-11-28 03:21:48,464 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:48,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:48,464 INFO L82 PathProgramCache]: Analyzing trace with hash 363149169, now seen corresponding path program 17 times [2020-11-28 03:21:48,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:48,465 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675029773] [2020-11-28 03:21:48,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:48,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:48,794 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:48,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675029773] [2020-11-28 03:21:48,794 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730376301] [2020-11-28 03:21:48,795 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:48,848 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 18 check-sat command(s) [2020-11-28 03:21:48,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:48,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 19 conjunts are in the unsatisfiable core [2020-11-28 03:21:48,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:49,192 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 0 proven. 748 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:49,193 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:49,193 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 18 [2020-11-28 03:21:49,193 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150113922] [2020-11-28 03:21:49,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-11-28 03:21:49,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:49,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-11-28 03:21:49,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-28 03:21:49,196 INFO L87 Difference]: Start difference. First operand 95 states and 95 transitions. Second operand 20 states. [2020-11-28 03:21:49,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:49,280 INFO L93 Difference]: Finished difference Result 99 states and 99 transitions. [2020-11-28 03:21:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-11-28 03:21:49,280 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 90 [2020-11-28 03:21:49,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:49,281 INFO L225 Difference]: With dead ends: 99 [2020-11-28 03:21:49,281 INFO L226 Difference]: Without dead ends: 98 [2020-11-28 03:21:49,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 72 SyntacticMatches, 17 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=190, Invalid=190, Unknown=0, NotChecked=0, Total=380 [2020-11-28 03:21:49,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-11-28 03:21:49,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2020-11-28 03:21:49,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-11-28 03:21:49,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 97 transitions. [2020-11-28 03:21:49,286 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 97 transitions. Word has length 90 [2020-11-28 03:21:49,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:49,287 INFO L481 AbstractCegarLoop]: Abstraction has 97 states and 97 transitions. [2020-11-28 03:21:49,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-11-28 03:21:49,287 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 97 transitions. [2020-11-28 03:21:49,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-11-28 03:21:49,287 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:49,288 INFO L422 BasicCegarLoop]: trace histogram [19, 18, 18, 18, 18, 1, 1] [2020-11-28 03:21:49,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2020-11-28 03:21:49,500 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:49,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:49,500 INFO L82 PathProgramCache]: Analyzing trace with hash -445677535, now seen corresponding path program 18 times [2020-11-28 03:21:49,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:49,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312196044] [2020-11-28 03:21:49,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:49,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:49,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312196044] [2020-11-28 03:21:49,855 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [843265714] [2020-11-28 03:21:49,855 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:49,916 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-11-28 03:21:49,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:49,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-28 03:21:49,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:50,298 INFO L134 CoverageAnalysis]: Checked inductivity of 801 backedges. 0 proven. 801 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:50,298 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:50,298 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-28 03:21:50,298 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528384463] [2020-11-28 03:21:50,299 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-28 03:21:50,299 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:50,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-28 03:21:50,300 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-28 03:21:50,300 INFO L87 Difference]: Start difference. First operand 97 states and 97 transitions. Second operand 21 states. [2020-11-28 03:21:50,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:50,426 INFO L93 Difference]: Finished difference Result 102 states and 102 transitions. [2020-11-28 03:21:50,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-28 03:21:50,426 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 93 [2020-11-28 03:21:50,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:50,427 INFO L225 Difference]: With dead ends: 102 [2020-11-28 03:21:50,428 INFO L226 Difference]: Without dead ends: 101 [2020-11-28 03:21:50,428 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 74 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-28 03:21:50,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-11-28 03:21:50,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2020-11-28 03:21:50,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-11-28 03:21:50,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 100 transitions. [2020-11-28 03:21:50,432 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 100 transitions. Word has length 93 [2020-11-28 03:21:50,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:50,433 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 100 transitions. [2020-11-28 03:21:50,433 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-28 03:21:50,433 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 100 transitions. [2020-11-28 03:21:50,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-11-28 03:21:50,434 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:50,434 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 18, 18, 1, 1] [2020-11-28 03:21:50,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2020-11-28 03:21:50,644 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:50,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:50,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1200619875, now seen corresponding path program 18 times [2020-11-28 03:21:50,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:50,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670869928] [2020-11-28 03:21:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:50,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:50,977 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:50,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670869928] [2020-11-28 03:21:50,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1464461693] [2020-11-28 03:21:50,977 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:51,034 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 19 check-sat command(s) [2020-11-28 03:21:51,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:21:51,035 INFO L263 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-28 03:21:51,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:51,424 INFO L134 CoverageAnalysis]: Checked inductivity of 837 backedges. 0 proven. 837 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:51,425 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:51,425 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19] total 19 [2020-11-28 03:21:51,425 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805571752] [2020-11-28 03:21:51,426 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-11-28 03:21:51,426 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:51,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-11-28 03:21:51,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-28 03:21:51,427 INFO L87 Difference]: Start difference. First operand 100 states and 100 transitions. Second operand 21 states. [2020-11-28 03:21:51,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:51,520 INFO L93 Difference]: Finished difference Result 104 states and 104 transitions. [2020-11-28 03:21:51,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-11-28 03:21:51,521 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 95 [2020-11-28 03:21:51,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:51,522 INFO L225 Difference]: With dead ends: 104 [2020-11-28 03:21:51,522 INFO L226 Difference]: Without dead ends: 103 [2020-11-28 03:21:51,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 76 SyntacticMatches, 18 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=210, Invalid=210, Unknown=0, NotChecked=0, Total=420 [2020-11-28 03:21:51,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-11-28 03:21:51,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2020-11-28 03:21:51,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-11-28 03:21:51,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 102 transitions. [2020-11-28 03:21:51,528 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 102 transitions. Word has length 95 [2020-11-28 03:21:51,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:51,529 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 102 transitions. [2020-11-28 03:21:51,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-11-28 03:21:51,529 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 102 transitions. [2020-11-28 03:21:51,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-11-28 03:21:51,530 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:51,530 INFO L422 BasicCegarLoop]: trace histogram [20, 19, 19, 19, 19, 1, 1] [2020-11-28 03:21:51,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 37 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2020-11-28 03:21:51,748 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:51,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:51,748 INFO L82 PathProgramCache]: Analyzing trace with hash -820897553, now seen corresponding path program 19 times [2020-11-28 03:21:51,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:51,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108116645] [2020-11-28 03:21:51,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:51,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:52,073 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:52,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108116645] [2020-11-28 03:21:52,073 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1727742332] [2020-11-28 03:21:52,073 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/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 [2020-11-28 03:21:52,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:21:52,116 INFO L263 TraceCheckSpWp]: Trace formula consists of 179 conjuncts, 21 conjunts are in the unsatisfiable core [2020-11-28 03:21:52,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:21:52,487 INFO L134 CoverageAnalysis]: Checked inductivity of 893 backedges. 0 proven. 893 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:21:52,488 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:21:52,488 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 20 [2020-11-28 03:21:52,488 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270764230] [2020-11-28 03:21:52,489 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-11-28 03:21:52,489 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:21:52,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-11-28 03:21:52,490 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-28 03:21:52,490 INFO L87 Difference]: Start difference. First operand 102 states and 102 transitions. Second operand 22 states. [2020-11-28 03:21:52,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:21:52,612 INFO L93 Difference]: Finished difference Result 107 states and 107 transitions. [2020-11-28 03:21:52,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-11-28 03:21:52,613 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 98 [2020-11-28 03:21:52,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-28 03:21:52,614 INFO L225 Difference]: With dead ends: 107 [2020-11-28 03:21:52,614 INFO L226 Difference]: Without dead ends: 106 [2020-11-28 03:21:52,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 78 SyntacticMatches, 19 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=231, Invalid=231, Unknown=0, NotChecked=0, Total=462 [2020-11-28 03:21:52,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-11-28 03:21:52,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 105. [2020-11-28 03:21:52,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2020-11-28 03:21:52,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 105 transitions. [2020-11-28 03:21:52,619 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 105 transitions. Word has length 98 [2020-11-28 03:21:52,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-28 03:21:52,620 INFO L481 AbstractCegarLoop]: Abstraction has 105 states and 105 transitions. [2020-11-28 03:21:52,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-11-28 03:21:52,620 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 105 transitions. [2020-11-28 03:21:52,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-11-28 03:21:52,621 INFO L414 BasicCegarLoop]: Found error trace [2020-11-28 03:21:52,621 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 19, 19, 1, 1] [2020-11-28 03:21:52,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2020-11-28 03:21:52,821 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr3ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr1ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr2ASSERT_VIOLATIONINTEGER_OVERFLOW, ULTIMATE.startErr0ASSERT_VIOLATIONINTEGER_OVERFLOW]=== [2020-11-28 03:21:52,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:21:52,822 INFO L82 PathProgramCache]: Analyzing trace with hash 1391435441, now seen corresponding path program 19 times [2020-11-28 03:21:52,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:21:52,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068371432] [2020-11-28 03:21:52,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:21:52,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:21:52,842 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:21:52,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:21:52,877 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:21:52,894 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:21:52,894 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-28 03:21:52,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-11-28 03:21:52,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 03:21:52 BoogieIcfgContainer [2020-11-28 03:21:52,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-28 03:21:52,939 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:21:52,939 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:21:52,939 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:21:52,940 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:21:27" (3/4) ... [2020-11-28 03:21:52,942 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-11-28 03:21:53,031 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_70eb92c0-bc0f-4a5a-b285-e72ee856578f/bin/uautomizer/witness.graphml [2020-11-28 03:21:53,032 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:21:53,034 INFO L168 Benchmark]: Toolchain (without parser) took 26284.67 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 56.9 MB in the beginning and 80.3 MB in the end (delta: -23.3 MB). Peak memory consumption was 75.9 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:53,034 INFO L168 Benchmark]: CDTParser took 0.54 ms. Allocated memory is still 88.1 MB. Free memory was 44.4 MB in the beginning and 44.3 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:53,035 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.86 ms. Allocated memory is still 88.1 MB. Free memory was 56.8 MB in the beginning and 66.9 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:53,035 INFO L168 Benchmark]: Boogie Procedure Inliner took 30.33 ms. Allocated memory is still 88.1 MB. Free memory was 66.9 MB in the beginning and 65.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:21:53,036 INFO L168 Benchmark]: Boogie Preprocessor took 23.60 ms. Allocated memory is still 88.1 MB. Free memory was 65.4 MB in the beginning and 64.4 MB in the end (delta: 954.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:53,037 INFO L168 Benchmark]: RCFGBuilder took 227.02 ms. Allocated memory is still 88.1 MB. Free memory was 64.4 MB in the beginning and 56.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:53,038 INFO L168 Benchmark]: TraceAbstraction took 25618.47 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 55.7 MB in the beginning and 83.4 MB in the end (delta: -27.7 MB). Peak memory consumption was 74.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:53,038 INFO L168 Benchmark]: Witness Printer took 93.10 ms. Allocated memory is still 188.7 MB. Free memory was 83.4 MB in the beginning and 80.3 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:21:53,041 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.54 ms. Allocated memory is still 88.1 MB. Free memory was 44.4 MB in the beginning and 44.3 MB in the end (delta: 63.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 282.86 ms. Allocated memory is still 88.1 MB. Free memory was 56.8 MB in the beginning and 66.9 MB in the end (delta: -10.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 30.33 ms. Allocated memory is still 88.1 MB. Free memory was 66.9 MB in the beginning and 65.4 MB in the end (delta: 1.5 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 23.60 ms. Allocated memory is still 88.1 MB. Free memory was 65.4 MB in the beginning and 64.4 MB in the end (delta: 954.4 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 227.02 ms. Allocated memory is still 88.1 MB. Free memory was 64.4 MB in the beginning and 56.0 MB in the end (delta: 8.4 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 25618.47 ms. Allocated memory was 88.1 MB in the beginning and 188.7 MB in the end (delta: 100.7 MB). Free memory was 55.7 MB in the beginning and 83.4 MB in the end (delta: -27.7 MB). Peak memory consumption was 74.7 MB. Max. memory is 16.1 GB. * Witness Printer took 93.10 ms. Allocated memory is still 188.7 MB. Free memory was 83.4 MB in the beginning and 80.3 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: 25.5s, OverallIterations: 42, TraceHistogramMax: 20, AutomataDifference: 2.7s, 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, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 2317 GetRequests, 1554 SyntacticMatches, 361 SemanticMatches, 402 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2109 ImplicationChecksByTransitivity, 10.1s 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, 12.3s 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...