./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound100.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound100.c -s /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8dc84db79a8b07132c3811ded928a476bb151124 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-30 00:01:03,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-30 00:01:03,513 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-30 00:01:03,559 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-30 00:01:03,560 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-30 00:01:03,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-30 00:01:03,565 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-30 00:01:03,568 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-30 00:01:03,570 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-30 00:01:03,572 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-30 00:01:03,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-30 00:01:03,576 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-30 00:01:03,577 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-30 00:01:03,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-30 00:01:03,581 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-30 00:01:03,583 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-30 00:01:03,584 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-30 00:01:03,586 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-30 00:01:03,589 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-30 00:01:03,592 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-30 00:01:03,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-30 00:01:03,597 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-30 00:01:03,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-30 00:01:03,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-30 00:01:03,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-30 00:01:03,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-30 00:01:03,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-30 00:01:03,608 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-30 00:01:03,609 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-30 00:01:03,611 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-30 00:01:03,611 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-30 00:01:03,613 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-30 00:01:03,614 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-30 00:01:03,615 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-30 00:01:03,617 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-30 00:01:03,618 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-30 00:01:03,619 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-30 00:01:03,620 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-30 00:01:03,620 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-30 00:01:03,622 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-30 00:01:03,624 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-30 00:01:03,629 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-30 00:01:03,688 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-30 00:01:03,689 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-30 00:01:03,691 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-30 00:01:03,692 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-30 00:01:03,692 INFO L138 SettingsManager]: * Use SBE=true [2020-11-30 00:01:03,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-30 00:01:03,693 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-30 00:01:03,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-30 00:01:03,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-30 00:01:03,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-30 00:01:03,695 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-30 00:01:03,696 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-30 00:01:03,696 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-30 00:01:03,696 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-30 00:01:03,697 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-30 00:01:03,697 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-30 00:01:03,697 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-30 00:01:03,698 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-30 00:01:03,698 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-30 00:01:03,698 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-30 00:01:03,698 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-30 00:01:03,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-30 00:01:03,699 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-30 00:01:03,699 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-30 00:01:03,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-30 00:01:03,700 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-30 00:01:03,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-30 00:01:03,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-30 00:01:03,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-30 00:01:03,701 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_9d520111-0de6-4408-bcc8-2aed565141bb/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8dc84db79a8b07132c3811ded928a476bb151124 [2020-11-30 00:01:04,029 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-30 00:01:04,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-30 00:01:04,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-30 00:01:04,072 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-30 00:01:04,074 INFO L275 PluginConnector]: CDTParser initialized [2020-11-30 00:01:04,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/../../sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound100.c [2020-11-30 00:01:04,181 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/data/1de0ffc3a/d81f99977e6e48dab2b6745d76545d68/FLAGe1aed2cee [2020-11-30 00:01:04,807 INFO L306 CDTParser]: Found 1 translation units. [2020-11-30 00:01:04,808 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/sv-benchmarks/c/nla-digbench-scaling/geo2-ll_unwindbound100.c [2020-11-30 00:01:04,822 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/data/1de0ffc3a/d81f99977e6e48dab2b6745d76545d68/FLAGe1aed2cee [2020-11-30 00:01:05,162 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/data/1de0ffc3a/d81f99977e6e48dab2b6745d76545d68 [2020-11-30 00:01:05,166 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-30 00:01:05,170 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-30 00:01:05,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-30 00:01:05,175 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-30 00:01:05,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-30 00:01:05,181 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:01:05" (1/1) ... [2020-11-30 00:01:05,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b85b92e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:05, skipping insertion in model container [2020-11-30 00:01:05,184 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.11 12:01:05" (1/1) ... [2020-11-30 00:01:05,193 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-30 00:01:05,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-30 00:01:05,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:01:05,492 INFO L203 MainTranslator]: Completed pre-run [2020-11-30 00:01:05,512 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-30 00:01:05,529 INFO L208 MainTranslator]: Completed translation [2020-11-30 00:01:05,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:05 WrapperNode [2020-11-30 00:01:05,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-30 00:01:05,531 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-30 00:01:05,531 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-30 00:01:05,531 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-30 00:01:05,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:05" (1/1) ... [2020-11-30 00:01:05,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:05" (1/1) ... [2020-11-30 00:01:05,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-30 00:01:05,573 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-30 00:01:05,573 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-30 00:01:05,574 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-30 00:01:05,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:05" (1/1) ... [2020-11-30 00:01:05,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:05" (1/1) ... [2020-11-30 00:01:05,586 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:05" (1/1) ... [2020-11-30 00:01:05,586 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:05" (1/1) ... [2020-11-30 00:01:05,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:05" (1/1) ... [2020-11-30 00:01:05,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:05" (1/1) ... [2020-11-30 00:01:05,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:05" (1/1) ... [2020-11-30 00:01:05,598 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-30 00:01:05,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-30 00:01:05,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-30 00:01:05,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-30 00:01:05,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/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 [2020-11-30 00:01:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-30 00:01:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-30 00:01:05,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-30 00:01:05,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-30 00:01:06,263 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-30 00:01:06,264 INFO L298 CfgBuilder]: Removed 13 assume(true) statements. [2020-11-30 00:01:06,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:01:06 BoogieIcfgContainer [2020-11-30 00:01:06,268 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-30 00:01:06,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-30 00:01:06,272 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-30 00:01:06,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-30 00:01:06,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.11 12:01:05" (1/3) ... [2020-11-30 00:01:06,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca91b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:01:06, skipping insertion in model container [2020-11-30 00:01:06,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.11 12:01:05" (2/3) ... [2020-11-30 00:01:06,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ca91b6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.11 12:01:06, skipping insertion in model container [2020-11-30 00:01:06,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:01:06" (3/3) ... [2020-11-30 00:01:06,281 INFO L111 eAbstractionObserver]: Analyzing ICFG geo2-ll_unwindbound100.c [2020-11-30 00:01:06,295 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-30 00:01:06,300 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2020-11-30 00:01:06,316 INFO L253 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2020-11-30 00:01:06,358 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-30 00:01:06,358 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-30 00:01:06,359 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-30 00:01:06,359 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-30 00:01:06,359 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-30 00:01:06,359 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-30 00:01:06,359 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-30 00:01:06,360 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-30 00:01:06,382 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-11-30 00:01:06,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-11-30 00:01:06,388 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:01:06,389 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-11-30 00:01:06,390 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:01:06,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:01:06,398 INFO L82 PathProgramCache]: Analyzing trace with hash 889571274, now seen corresponding path program 1 times [2020-11-30 00:01:06,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:01:06,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374699665] [2020-11-30 00:01:06,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:01:06,604 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:01:06,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [312243532] [2020-11-30 00:01:06,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/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 [2020-11-30 00:01:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:01:06,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:01:06,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:01:06,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:01:06,839 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374699665] [2020-11-30 00:01:06,840 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:01:06,840 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312243532] [2020-11-30 00:01:06,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:01:06,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-30 00:01:06,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206683369] [2020-11-30 00:01:06,847 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-30 00:01:06,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:01:06,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-30 00:01:06,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-30 00:01:06,866 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-11-30 00:01:06,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:01:06,971 INFO L93 Difference]: Finished difference Result 44 states and 58 transitions. [2020-11-30 00:01:06,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-30 00:01:06,973 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 6 [2020-11-30 00:01:06,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:01:06,982 INFO L225 Difference]: With dead ends: 44 [2020-11-30 00:01:06,982 INFO L226 Difference]: Without dead ends: 19 [2020-11-30 00:01:06,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:01:07,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-11-30 00:01:07,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 16. [2020-11-30 00:01:07,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-30 00:01:07,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-11-30 00:01:07,025 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 6 [2020-11-30 00:01:07,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:01:07,025 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-11-30 00:01:07,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-30 00:01:07,026 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-11-30 00:01:07,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-11-30 00:01:07,027 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:01:07,027 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 00:01:07,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-11-30 00:01:07,241 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:01:07,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:01:07,242 INFO L82 PathProgramCache]: Analyzing trace with hash 885278358, now seen corresponding path program 1 times [2020-11-30 00:01:07,243 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:01:07,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533589636] [2020-11-30 00:01:07,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:01:07,263 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:01:07,264 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1831728666] [2020-11-30 00:01:07,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:01:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:01:07,374 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 13 conjunts are in the unsatisfiable core [2020-11-30 00:01:07,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:01:07,483 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:01:07,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533589636] [2020-11-30 00:01:07,484 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:01:07,484 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1831728666] [2020-11-30 00:01:07,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:01:07,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:01:07,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870025561] [2020-11-30 00:01:07,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:01:07,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:01:07,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:01:07,488 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:01:07,488 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 5 states. [2020-11-30 00:01:07,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:01:07,596 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2020-11-30 00:01:07,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:01:07,597 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-11-30 00:01:07,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:01:07,598 INFO L225 Difference]: With dead ends: 29 [2020-11-30 00:01:07,598 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 00:01:07,599 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:01:07,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 00:01:07,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-11-30 00:01:07,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 00:01:07,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-11-30 00:01:07,606 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 10 [2020-11-30 00:01:07,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:01:07,606 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-11-30 00:01:07,607 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:01:07,607 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-11-30 00:01:07,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-11-30 00:01:07,608 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:01:07,608 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1] [2020-11-30 00:01:07,808 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:01:07,809 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:01:07,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:01:07,810 INFO L82 PathProgramCache]: Analyzing trace with hash 542015330, now seen corresponding path program 2 times [2020-11-30 00:01:07,810 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:01:07,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099009952] [2020-11-30 00:01:07,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:01:07,829 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:01:07,831 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1694663085] [2020-11-30 00:01:07,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/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 [2020-11-30 00:01:07,902 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:01:07,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:01:07,905 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 20 conjunts are in the unsatisfiable core [2020-11-30 00:01:07,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:01:08,009 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:01:08,013 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:01:08,799 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-11-30 00:01:08,819 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:01:10,877 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:01:19,099 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:01:36,287 WARN L193 SmtUtils]: Spent 8.17 s on a formula simplification that was a NOOP. DAG size: 29 [2020-11-30 00:01:38,348 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:01:46,556 WARN L838 $PredicateComparison]: unable to prove that (exists ((ULTIMATE.start_main_~z~0 Int) (ULTIMATE.start_main_~x~0 Int)) (let ((.cse0 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (not (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0) ULTIMATE.start_main_~x~0))) (= (mod .cse0 ULTIMATE.start_main_~z~0) 0) (not (= ULTIMATE.start_main_~z~0 0)) (let ((.cse1 (div .cse0 ULTIMATE.start_main_~z~0))) (= (+ (* .cse1 ULTIMATE.start_main_~z~0) 1) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~z~0) .cse1)))))) is different from false [2020-11-30 00:01:46,643 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:01:46,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099009952] [2020-11-30 00:01:46,643 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:01:46,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1694663085] [2020-11-30 00:01:46,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:01:46,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-11-30 00:01:46,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287045552] [2020-11-30 00:01:46,645 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-11-30 00:01:46,645 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:01:46,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-11-30 00:01:46,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=41, Unknown=2, NotChecked=12, Total=72 [2020-11-30 00:01:46,647 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 9 states. [2020-11-30 00:01:56,129 WARN L193 SmtUtils]: Spent 1.28 s on a formula simplification. DAG size of input: 41 DAG size of output: 13 [2020-11-30 00:02:14,092 WARN L193 SmtUtils]: Spent 15.95 s on a formula simplification that was a NOOP. DAG size: 36 [2020-11-30 00:02:36,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:36,921 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2020-11-30 00:02:36,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:02:36,946 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 14 [2020-11-30 00:02:36,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:36,947 INFO L225 Difference]: With dead ends: 33 [2020-11-30 00:02:36,947 INFO L226 Difference]: Without dead ends: 31 [2020-11-30 00:02:36,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 33.1s TimeCoverageRelationStatistics Valid=27, Invalid=65, Unknown=2, NotChecked=16, Total=110 [2020-11-30 00:02:36,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-11-30 00:02:36,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2020-11-30 00:02:36,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:02:36,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-11-30 00:02:36,956 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 14 [2020-11-30 00:02:36,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:36,956 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-11-30 00:02:36,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-11-30 00:02:36,957 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-11-30 00:02:36,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-11-30 00:02:36,957 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:02:36,957 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 00:02:37,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:02:37,158 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:02:37,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:02:37,159 INFO L82 PathProgramCache]: Analyzing trace with hash -377436604, now seen corresponding path program 1 times [2020-11-30 00:02:37,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:02:37,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008411503] [2020-11-30 00:02:37,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:02:37,184 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:02:37,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1905005390] [2020-11-30 00:02:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/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 [2020-11-30 00:02:37,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:37,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-30 00:02:37,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:02:37,373 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:02:37,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008411503] [2020-11-30 00:02:37,374 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:02:37,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1905005390] [2020-11-30 00:02:37,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:02:37,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:02:37,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199535494] [2020-11-30 00:02:37,375 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:02:37,375 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:02:37,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:02:37,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:02:37,377 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2020-11-30 00:02:37,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:37,503 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2020-11-30 00:02:37,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-30 00:02:37,505 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-11-30 00:02:37,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:37,506 INFO L225 Difference]: With dead ends: 27 [2020-11-30 00:02:37,506 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 00:02:37,507 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-11-30 00:02:37,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 00:02:37,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 00:02:37,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:02:37,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-11-30 00:02:37,517 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 15 [2020-11-30 00:02:37,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:37,518 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-11-30 00:02:37,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:02:37,518 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-11-30 00:02:37,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-11-30 00:02:37,520 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:02:37,520 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2020-11-30 00:02:37,741 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:02:37,742 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:02:37,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:02:37,743 INFO L82 PathProgramCache]: Analyzing trace with hash -1892495811, now seen corresponding path program 1 times [2020-11-30 00:02:37,743 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:02:37,743 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383844348] [2020-11-30 00:02:37,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:02:37,771 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:02:37,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [345808292] [2020-11-30 00:02:37,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:02:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-30 00:02:37,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 11 conjunts are in the unsatisfiable core [2020-11-30 00:02:37,828 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:02:38,364 WARN L193 SmtUtils]: Spent 526.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 00:02:38,367 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:02:38,367 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:02:38,786 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-11-30 00:02:38,796 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:02:38,832 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 00:02:38,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383844348] [2020-11-30 00:02:38,832 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:02:38,832 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345808292] [2020-11-30 00:02:38,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:02:38,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:02:38,833 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943932986] [2020-11-30 00:02:38,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-30 00:02:38,834 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:02:38,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-30 00:02:38,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-30 00:02:38,837 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 5 states. [2020-11-30 00:02:39,065 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2020-11-30 00:02:43,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:02:43,316 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-11-30 00:02:43,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-30 00:02:43,319 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-11-30 00:02:43,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:02:43,319 INFO L225 Difference]: With dead ends: 27 [2020-11-30 00:02:43,320 INFO L226 Difference]: Without dead ends: 23 [2020-11-30 00:02:43,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-11-30 00:02:43,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-11-30 00:02:43,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-11-30 00:02:43,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-11-30 00:02:43,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-11-30 00:02:43,330 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 17 [2020-11-30 00:02:43,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:02:43,330 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-11-30 00:02:43,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-30 00:02:43,330 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-11-30 00:02:43,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-11-30 00:02:43,331 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:02:43,331 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1] [2020-11-30 00:02:43,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:02:43,531 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:02:43,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:02:43,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1463251502, now seen corresponding path program 3 times [2020-11-30 00:02:43,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:02:43,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009205364] [2020-11-30 00:02:43,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:02:43,545 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:02:43,546 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1299457833] [2020-11-30 00:02:43,546 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:02:43,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-30 00:02:43,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:02:43,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 00:02:43,600 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:02:43,828 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 00:02:43,831 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:02:43,831 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:02:43,990 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-11-30 00:02:53,574 WARN L193 SmtUtils]: Spent 4.54 s on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-11-30 00:02:53,584 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:02:55,662 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:02:57,717 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:02:57,852 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 12 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-11-30 00:02:57,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009205364] [2020-11-30 00:02:57,853 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:02:57,853 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1299457833] [2020-11-30 00:02:57,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:02:57,854 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-11-30 00:02:57,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822904369] [2020-11-30 00:02:57,854 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:02:57,854 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:02:57,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:02:57,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=18, Unknown=2, NotChecked=0, Total=30 [2020-11-30 00:02:57,856 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 6 states. [2020-11-30 00:03:01,522 WARN L193 SmtUtils]: Spent 347.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2020-11-30 00:03:10,329 WARN L193 SmtUtils]: Spent 1.43 s on a formula simplification that was a NOOP. DAG size: 27 [2020-11-30 00:03:43,459 WARN L193 SmtUtils]: Spent 32.74 s on a formula simplification that was a NOOP. DAG size: 37 [2020-11-30 00:04:20,247 WARN L193 SmtUtils]: Spent 36.37 s on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-11-30 00:04:22,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:22,828 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-11-30 00:04:22,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:04:22,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-11-30 00:04:22,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:22,831 INFO L225 Difference]: With dead ends: 23 [2020-11-30 00:04:22,831 INFO L226 Difference]: Without dead ends: 21 [2020-11-30 00:04:22,832 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 85.1s TimeCoverageRelationStatistics Valid=34, Invalid=53, Unknown=3, NotChecked=0, Total=90 [2020-11-30 00:04:22,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-11-30 00:04:22,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-11-30 00:04:22,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-11-30 00:04:22,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-11-30 00:04:22,839 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 18 [2020-11-30 00:04:22,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:22,840 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-11-30 00:04:22,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:04:22,840 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-11-30 00:04:22,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-30 00:04:22,840 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:22,840 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:23,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:04:23,041 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:23,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:23,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1883886344, now seen corresponding path program 2 times [2020-11-30 00:04:23,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:04:23,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [322749707] [2020-11-30 00:04:23,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:04:23,061 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:04:23,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1675965695] [2020-11-30 00:04:23,062 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:04:23,120 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-30 00:04:23,120 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:04:23,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-30 00:04:23,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:04:23,215 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-30 00:04:23,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [322749707] [2020-11-30 00:04:23,216 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:04:23,216 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1675965695] [2020-11-30 00:04:23,216 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-11-30 00:04:23,216 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-11-30 00:04:23,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052588992] [2020-11-30 00:04:23,217 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-30 00:04:23,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:04:23,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-30 00:04:23,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-11-30 00:04:23,218 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 7 states. [2020-11-30 00:04:23,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:04:23,921 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-11-30 00:04:23,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-30 00:04:23,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-11-30 00:04:23,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:04:23,928 INFO L225 Difference]: With dead ends: 28 [2020-11-30 00:04:23,928 INFO L226 Difference]: Without dead ends: 24 [2020-11-30 00:04:23,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-11-30 00:04:23,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-11-30 00:04:23,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-11-30 00:04:23,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-11-30 00:04:23,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-11-30 00:04:23,936 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 19 [2020-11-30 00:04:23,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:04:23,936 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-11-30 00:04:23,936 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-30 00:04:23,936 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-11-30 00:04:23,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-11-30 00:04:23,937 INFO L414 BasicCegarLoop]: Found error trace [2020-11-30 00:04:23,937 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2020-11-30 00:04:24,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:04:24,138 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-30 00:04:24,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-30 00:04:24,138 INFO L82 PathProgramCache]: Analyzing trace with hash -1162798676, now seen corresponding path program 3 times [2020-11-30 00:04:24,139 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-30 00:04:24,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741458585] [2020-11-30 00:04:24,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-30 00:04:24,148 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-11-30 00:04:24,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [775563273] [2020-11-30 00:04:24,148 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-30 00:04:24,258 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2020-11-30 00:04:24,258 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-30 00:04:24,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 14 conjunts are in the unsatisfiable core [2020-11-30 00:04:24,261 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-30 00:04:25,476 WARN L193 SmtUtils]: Spent 1.21 s on a formula simplification that was a NOOP. DAG size: 17 [2020-11-30 00:04:25,479 INFO L375 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-11-30 00:04:25,480 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:04:26,011 WARN L193 SmtUtils]: Spent 519.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-11-30 00:04:34,761 WARN L193 SmtUtils]: Spent 4.38 s on a formula simplification. DAG size of input: 28 DAG size of output: 25 [2020-11-30 00:04:34,770 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:04:36,838 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:04:38,927 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-30 00:04:39,283 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-11-30 00:04:39,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741458585] [2020-11-30 00:04:39,283 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-11-30 00:04:39,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [775563273] [2020-11-30 00:04:39,284 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-30 00:04:39,284 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-30 00:04:39,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1343717392] [2020-11-30 00:04:39,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-11-30 00:04:39,285 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-30 00:04:39,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-30 00:04:39,286 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=19, Unknown=1, NotChecked=0, Total=30 [2020-11-30 00:04:39,286 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 6 states. [2020-11-30 00:04:44,886 WARN L193 SmtUtils]: Spent 746.00 ms on a formula simplification. DAG size of input: 18 DAG size of output: 12 [2020-11-30 00:05:23,673 WARN L193 SmtUtils]: Spent 30.45 s on a formula simplification that was a NOOP. DAG size: 37 [2020-11-30 00:06:00,363 WARN L193 SmtUtils]: Spent 34.55 s on a formula simplification. DAG size of input: 37 DAG size of output: 31 [2020-11-30 00:06:04,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-30 00:06:04,505 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-11-30 00:06:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-30 00:06:04,509 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 23 [2020-11-30 00:06:04,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-30 00:06:04,509 INFO L225 Difference]: With dead ends: 24 [2020-11-30 00:06:04,509 INFO L226 Difference]: Without dead ends: 0 [2020-11-30 00:06:04,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 83.1s TimeCoverageRelationStatistics Valid=28, Invalid=41, Unknown=3, NotChecked=0, Total=72 [2020-11-30 00:06:04,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-30 00:06:04,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-30 00:06:04,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-30 00:06:04,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-30 00:06:04,511 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-11-30 00:06:04,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-30 00:06:04,511 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-30 00:06:04,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-11-30 00:06:04,511 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-30 00:06:04,511 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-30 00:06:04,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-11-30 00:06:04,720 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-30 00:06:14,727 WARN L193 SmtUtils]: Spent 9.94 s on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-11-30 00:07:05,033 WARN L193 SmtUtils]: Spent 50.30 s on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-11-30 00:07:05,036 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-30 00:07:05,037 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:07:05,037 INFO L274 CegarLoopResult]: For program point L15(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:07:05,037 INFO L270 CegarLoopResult]: At program point L15-1(lines 37 38) the Hoare annotation is: (let ((.cse0 (= 1 ULTIMATE.start___VERIFIER_assert_~cond)) (.cse1 (= (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~x~0) (+ (* ULTIMATE.start_main_~z~0 ULTIMATE.start_main_~x~0) 1)))) (or (and .cse0 .cse1 (or (let ((.cse2 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse2 ULTIMATE.start_main_~z~0) 0) (let ((.cse3 (div .cse2 ULTIMATE.start_main_~z~0))) (= (+ (* ULTIMATE.start_main_~z~0 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) .cse3) (+ (* .cse3 ULTIMATE.start_main_~z~0) 1))) (not (= ULTIMATE.start_main_~z~0 0)))) (= ULTIMATE.start_main_~y~0 0))) (and (<= ~counter~0 1) .cse0 .cse1 (= ULTIMATE.start_main_~y~0 1)))) [2020-11-30 00:07:05,037 INFO L274 CegarLoopResult]: For program point L15-2(lines 15 18) no Hoare annotation was computed. [2020-11-30 00:07:05,037 INFO L277 CegarLoopResult]: At program point L15-3(lines 14 20) the Hoare annotation is: true [2020-11-30 00:07:05,038 INFO L274 CegarLoopResult]: For program point L34-1(lines 34 43) no Hoare annotation was computed. [2020-11-30 00:07:05,038 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-11-30 00:07:05,038 INFO L270 CegarLoopResult]: At program point L34-3(lines 34 43) the Hoare annotation is: (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (let ((.cse0 (= ULTIMATE.start_main_~z~0 0))) (or (and (= ULTIMATE.start_main_~y~0 0) .cse0) (let ((.cse1 (+ ULTIMATE.start_main_~x~0 (- 1)))) (and (= (mod ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0) 0) (= (mod .cse1 ULTIMATE.start_main_~z~0) 0) (let ((.cse2 (div .cse1 ULTIMATE.start_main_~z~0))) (= (+ (* ULTIMATE.start_main_~z~0 (div ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~z~0)) .cse2) (+ (* .cse2 ULTIMATE.start_main_~z~0) 1))) (not .cse0)))))) (and (= ULTIMATE.start_main_~x~0 1) (<= ~counter~0 0) (= ULTIMATE.start_main_~y~0 1))) [2020-11-30 00:07:05,038 INFO L274 CegarLoopResult]: For program point L34-4(lines 34 43) no Hoare annotation was computed. [2020-11-30 00:07:05,038 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-11-30 00:07:05,038 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-30 00:07:05,038 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-11-30 00:07:05,038 INFO L274 CegarLoopResult]: For program point L16(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:07:05,039 INFO L274 CegarLoopResult]: For program point L16-1(lines 16 17) no Hoare annotation was computed. [2020-11-30 00:07:05,039 INFO L277 CegarLoopResult]: At program point L45(lines 24 46) the Hoare annotation is: true [2020-11-30 00:07:05,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.11 12:07:05 BoogieIcfgContainer [2020-11-30 00:07:05,066 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-30 00:07:05,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-30 00:07:05,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-30 00:07:05,071 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-30 00:07:05,072 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.11 12:01:06" (3/4) ... [2020-11-30 00:07:05,081 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-11-30 00:07:05,098 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-11-30 00:07:05,099 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2020-11-30 00:07:05,100 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:07:05,100 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-11-30 00:07:05,181 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_9d520111-0de6-4408-bcc8-2aed565141bb/bin/uautomizer/witness.graphml [2020-11-30 00:07:05,182 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-30 00:07:05,183 INFO L168 Benchmark]: Toolchain (without parser) took 360012.77 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 61.5 MB in the beginning and 85.1 MB in the end (delta: -23.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:07:05,183 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 92.3 MB. Free memory is still 47.9 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:07:05,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.66 ms. Allocated memory is still 92.3 MB. Free memory was 61.3 MB in the beginning and 69.4 MB in the end (delta: -8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-30 00:07:05,184 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.38 ms. Allocated memory is still 92.3 MB. Free memory was 69.4 MB in the beginning and 67.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:07:05,184 INFO L168 Benchmark]: Boogie Preprocessor took 25.50 ms. Allocated memory is still 92.3 MB. Free memory was 67.7 MB in the beginning and 66.8 MB in the end (delta: 910.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-30 00:07:05,185 INFO L168 Benchmark]: RCFGBuilder took 668.67 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 55.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2020-11-30 00:07:05,185 INFO L168 Benchmark]: TraceAbstraction took 358795.24 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 54.6 MB in the beginning and 88.3 MB in the end (delta: -33.7 MB). Peak memory consumption was 49.4 MB. Max. memory is 16.1 GB. [2020-11-30 00:07:05,185 INFO L168 Benchmark]: Witness Printer took 115.42 ms. Allocated memory is still 115.3 MB. Free memory was 88.3 MB in the beginning and 85.1 MB in the end (delta: 3.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-30 00:07:05,188 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 92.3 MB. Free memory is still 47.9 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 355.66 ms. Allocated memory is still 92.3 MB. Free memory was 61.3 MB in the beginning and 69.4 MB in the end (delta: -8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 41.38 ms. Allocated memory is still 92.3 MB. Free memory was 69.4 MB in the beginning and 67.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 25.50 ms. Allocated memory is still 92.3 MB. Free memory was 67.7 MB in the beginning and 66.8 MB in the end (delta: 910.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 668.67 ms. Allocated memory is still 92.3 MB. Free memory was 66.8 MB in the beginning and 55.1 MB in the end (delta: 11.7 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 358795.24 ms. Allocated memory was 92.3 MB in the beginning and 115.3 MB in the end (delta: 23.1 MB). Free memory was 54.6 MB in the beginning and 88.3 MB in the end (delta: -33.7 MB). Peak memory consumption was 49.4 MB. Max. memory is 16.1 GB. * Witness Printer took 115.42 ms. Allocated memory is still 115.3 MB. Free memory was 88.3 MB in the beginning and 85.1 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: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: (1 == cond && ((y == 0 && z == 0) || (((y % z == 0 && (x + -1) % z == 0) && z * (y / z) + (x + -1) / z == (x + -1) / z * z + 1) && !(z == 0)))) || ((x == 1 && counter <= 0) && y == 1) - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 37]: Loop Invariant Derived loop invariant: ((1 == cond && z * y + x == z * x + 1) && ((((y % z == 0 && (x + -1) % z == 0) && z * (y / z) + (x + -1) / z == (x + -1) / z * z + 1) && !(z == 0)) || y == 0)) || (((counter <= 1 && 1 == cond) && z * y + x == z * x + 1) && y == 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 16 locations, 2 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 298.3s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 226.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 60.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 75 SDtfs, 86 SDslu, 200 SDs, 0 SdLazy, 161 SolverSat, 38 SolverUnsat, 20 SolverUnknown, 0 SolverNotchecked, 57.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 136 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 202.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 15 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 17 NumberOfFragments, 142 HoareAnnotationTreeSize, 4 FomulaSimplifications, 284 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 4 FomulaSimplificationsInter, 143 FormulaSimplificationTreeSizeReductionInter, 60.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 69.4s InterpolantComputationTime, 122 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 114 ConstructedInterpolants, 2 QuantifiedInterpolants, 13304 SizeOfPredicates, 44 NumberOfNonLiveVariables, 682 ConjunctsInSsa, 95 ConjunctsInUnsatCore, 8 InterpolantComputations, 3 PerfectInterpolantSequences, 64/104 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! [MP z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forcibly destroying the process Received shutdown request...