./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/config/TaipanReach.xml -i ../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c22a2bf16e566e2dd78495f603a40c3d184b5b55 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 08:04:09,429 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 08:04:09,431 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 08:04:09,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 08:04:09,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 08:04:09,469 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 08:04:09,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 08:04:09,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 08:04:09,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 08:04:09,476 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 08:04:09,478 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 08:04:09,479 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 08:04:09,479 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 08:04:09,480 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 08:04:09,482 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 08:04:09,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 08:04:09,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 08:04:09,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 08:04:09,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 08:04:09,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 08:04:09,490 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 08:04:09,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 08:04:09,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 08:04:09,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 08:04:09,496 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 08:04:09,497 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 08:04:09,497 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 08:04:09,498 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 08:04:09,499 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 08:04:09,500 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 08:04:09,500 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 08:04:09,501 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 08:04:09,501 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 08:04:09,502 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 08:04:09,503 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 08:04:09,503 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 08:04:09,504 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 08:04:09,504 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 08:04:09,504 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 08:04:09,505 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 08:04:09,505 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 08:04:09,506 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/config/svcomp-Reach-32bit-Taipan_Default.epf [2020-12-09 08:04:09,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 08:04:09,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 08:04:09,529 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 08:04:09,529 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 08:04:09,529 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 08:04:09,529 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 08:04:09,530 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 08:04:09,530 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 08:04:09,530 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 08:04:09,530 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 08:04:09,530 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 08:04:09,530 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 08:04:09,530 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 08:04:09,531 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 08:04:09,531 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 08:04:09,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 08:04:09,531 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 08:04:09,532 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 08:04:09,532 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 08:04:09,532 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 08:04:09,532 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-09 08:04:09,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 08:04:09,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-09 08:04:09,532 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 08:04:09,532 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 08:04:09,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-09 08:04:09,532 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 08:04:09,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-09 08:04:09,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 08:04:09,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 08:04:09,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 08:04:09,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 08:04:09,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 08:04:09,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-09 08:04:09,534 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 08:04:09,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 08:04:09,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-09 08:04:09,534 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 08:04:09,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 08:04:09,534 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c22a2bf16e566e2dd78495f603a40c3d184b5b55 [2020-12-09 08:04:09,721 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 08:04:09,736 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 08:04:09,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 08:04:09,739 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 08:04:09,740 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 08:04:09,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/../../sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c [2020-12-09 08:04:09,782 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/data/19b3783e2/ffdf6909f43a498cbaa6f41ba0ff7f0b/FLAGf0b642b35 [2020-12-09 08:04:10,153 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 08:04:10,153 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c [2020-12-09 08:04:10,159 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/data/19b3783e2/ffdf6909f43a498cbaa6f41ba0ff7f0b/FLAGf0b642b35 [2020-12-09 08:04:10,168 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/data/19b3783e2/ffdf6909f43a498cbaa6f41ba0ff7f0b [2020-12-09 08:04:10,170 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 08:04:10,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 08:04:10,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 08:04:10,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 08:04:10,175 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 08:04:10,176 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:04:10" (1/1) ... [2020-12-09 08:04:10,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e39f742 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:04:10, skipping insertion in model container [2020-12-09 08:04:10,178 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 08:04:10" (1/1) ... [2020-12-09 08:04:10,184 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 08:04:10,200 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 08:04:10,300 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c[490,503] [2020-12-09 08:04:10,316 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:04:10,323 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 08:04:10,331 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/sv-benchmarks/c/nla-digbench-scaling/egcd2-ll_unwindbound10.c[490,503] [2020-12-09 08:04:10,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 08:04:10,347 INFO L208 MainTranslator]: Completed translation [2020-12-09 08:04:10,348 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:04:10 WrapperNode [2020-12-09 08:04:10,348 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 08:04:10,348 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 08:04:10,349 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 08:04:10,349 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 08:04:10,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:04:10" (1/1) ... [2020-12-09 08:04:10,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:04:10" (1/1) ... [2020-12-09 08:04:10,374 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 08:04:10,375 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 08:04:10,375 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 08:04:10,375 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 08:04:10,381 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:04:10" (1/1) ... [2020-12-09 08:04:10,381 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:04:10" (1/1) ... [2020-12-09 08:04:10,383 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:04:10" (1/1) ... [2020-12-09 08:04:10,383 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:04:10" (1/1) ... [2020-12-09 08:04:10,386 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:04:10" (1/1) ... [2020-12-09 08:04:10,390 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:04:10" (1/1) ... [2020-12-09 08:04:10,391 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:04:10" (1/1) ... [2020-12-09 08:04:10,393 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 08:04:10,393 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 08:04:10,394 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 08:04:10,394 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 08:04:10,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:04:10" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/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 [2020-12-09 08:04:10,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 08:04:10,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 08:04:10,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 08:04:10,447 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 08:04:10,741 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 08:04:10,741 INFO L299 CfgBuilder]: Removed 26 assume(true) statements. [2020-12-09 08:04:10,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:04:10 BoogieIcfgContainer [2020-12-09 08:04:10,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 08:04:10,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 08:04:10,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 08:04:10,747 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 08:04:10,747 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 08:04:10" (1/3) ... [2020-12-09 08:04:10,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd6cfd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:04:10, skipping insertion in model container [2020-12-09 08:04:10,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 08:04:10" (2/3) ... [2020-12-09 08:04:10,748 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bd6cfd0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 08:04:10, skipping insertion in model container [2020-12-09 08:04:10,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:04:10" (3/3) ... [2020-12-09 08:04:10,749 INFO L111 eAbstractionObserver]: Analyzing ICFG egcd2-ll_unwindbound10.c [2020-12-09 08:04:10,759 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 08:04:10,761 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 6 error locations. [2020-12-09 08:04:10,769 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-12-09 08:04:10,787 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 08:04:10,788 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-09 08:04:10,788 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 08:04:10,788 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 08:04:10,788 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 08:04:10,788 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 08:04:10,788 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 08:04:10,788 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 08:04:10,799 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-12-09 08:04:10,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2020-12-09 08:04:10,802 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:04:10,802 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2020-12-09 08:04:10,803 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:04:10,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:04:10,806 INFO L82 PathProgramCache]: Analyzing trace with hash 169560536, now seen corresponding path program 1 times [2020-12-09 08:04:10,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:04:10,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655188069] [2020-12-09 08:04:10,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:04:10,863 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:04:10,864 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [18241036] [2020-12-09 08:04:10,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/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 [2020-12-09 08:04:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:04:10,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 1 conjunts are in the unsatisfiable core [2020-12-09 08:04:10,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:04:10,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:10,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:04:10,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:10,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655188069] [2020-12-09 08:04:10,949 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:04:10,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [18241036] [2020-12-09 08:04:10,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:04:10,950 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-09 08:04:10,950 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71096783] [2020-12-09 08:04:10,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-12-09 08:04:10,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:04:10,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-12-09 08:04:10,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:04:10,964 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 2 states. [2020-12-09 08:04:10,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:04:10,976 INFO L93 Difference]: Finished difference Result 65 states and 87 transitions. [2020-12-09 08:04:10,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 08:04:10,977 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 5 [2020-12-09 08:04:10,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:04:10,982 INFO L225 Difference]: With dead ends: 65 [2020-12-09 08:04:10,983 INFO L226 Difference]: Without dead ends: 31 [2020-12-09 08:04:10,985 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-12-09 08:04:10,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-12-09 08:04:11,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-12-09 08:04:11,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-12-09 08:04:11,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2020-12-09 08:04:11,008 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 5 [2020-12-09 08:04:11,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:04:11,008 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2020-12-09 08:04:11,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-12-09 08:04:11,008 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2020-12-09 08:04:11,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-12-09 08:04:11,008 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:04:11,008 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-12-09 08:04:11,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable0 [2020-12-09 08:04:11,210 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:04:11,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:04:11,210 INFO L82 PathProgramCache]: Analyzing trace with hash 890891193, now seen corresponding path program 1 times [2020-12-09 08:04:11,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:04:11,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214702407] [2020-12-09 08:04:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:04:11,215 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:04:11,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [116755828] [2020-12-09 08:04:11,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/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 [2020-12-09 08:04:11,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:04:11,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 77 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 08:04:11,249 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:04:11,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:11,288 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:04:11,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:11,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214702407] [2020-12-09 08:04:11,308 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:04:11,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [116755828] [2020-12-09 08:04:11,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:04:11,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 08:04:11,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501376496] [2020-12-09 08:04:11,310 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:04:11,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:04:11,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:04:11,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:04:11,311 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 6 states. [2020-12-09 08:04:11,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:04:11,339 INFO L93 Difference]: Finished difference Result 51 states and 54 transitions. [2020-12-09 08:04:11,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 08:04:11,339 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2020-12-09 08:04:11,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:04:11,340 INFO L225 Difference]: With dead ends: 51 [2020-12-09 08:04:11,340 INFO L226 Difference]: Without dead ends: 43 [2020-12-09 08:04:11,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:04:11,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-12-09 08:04:11,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 33. [2020-12-09 08:04:11,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-12-09 08:04:11,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 36 transitions. [2020-12-09 08:04:11,347 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 36 transitions. Word has length 6 [2020-12-09 08:04:11,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:04:11,347 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 36 transitions. [2020-12-09 08:04:11,347 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:04:11,347 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2020-12-09 08:04:11,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 08:04:11,347 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:04:11,348 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:04:11,548 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:04:11,550 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:04:11,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:04:11,551 INFO L82 PathProgramCache]: Analyzing trace with hash 1847641631, now seen corresponding path program 1 times [2020-12-09 08:04:11,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:04:11,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866123675] [2020-12-09 08:04:11,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:04:11,564 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:04:11,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [524212678] [2020-12-09 08:04:11,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/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 [2020-12-09 08:04:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:04:11,624 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-09 08:04:11,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:04:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:11,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:04:11,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:11,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866123675] [2020-12-09 08:04:11,639 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:04:11,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524212678] [2020-12-09 08:04:11,640 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:04:11,640 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2020-12-09 08:04:11,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1976676197] [2020-12-09 08:04:11,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 08:04:11,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:04:11,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 08:04:11,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:04:11,641 INFO L87 Difference]: Start difference. First operand 33 states and 36 transitions. Second operand 3 states. [2020-12-09 08:04:11,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:04:11,662 INFO L93 Difference]: Finished difference Result 61 states and 66 transitions. [2020-12-09 08:04:11,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 08:04:11,662 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-09 08:04:11,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:04:11,663 INFO L225 Difference]: With dead ends: 61 [2020-12-09 08:04:11,663 INFO L226 Difference]: Without dead ends: 53 [2020-12-09 08:04:11,664 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 08:04:11,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-12-09 08:04:11,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 34. [2020-12-09 08:04:11,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-12-09 08:04:11,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2020-12-09 08:04:11,669 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 7 [2020-12-09 08:04:11,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:04:11,669 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2020-12-09 08:04:11,669 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 08:04:11,669 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2020-12-09 08:04:11,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 08:04:11,670 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:04:11,670 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:04:11,871 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:04:11,872 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:04:11,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:04:11,873 INFO L82 PathProgramCache]: Analyzing trace with hash 1442287066, now seen corresponding path program 1 times [2020-12-09 08:04:11,874 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:04:11,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877006684] [2020-12-09 08:04:11,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:04:11,890 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:04:11,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1010757705] [2020-12-09 08:04:11,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/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 [2020-12-09 08:04:11,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:04:11,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 17 conjunts are in the unsatisfiable core [2020-12-09 08:04:11,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:04:11,949 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:11,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:04:11,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:11,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877006684] [2020-12-09 08:04:11,971 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:04:11,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1010757705] [2020-12-09 08:04:11,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:04:11,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 08:04:11,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904476143] [2020-12-09 08:04:11,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 08:04:11,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:04:11,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 08:04:11,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-12-09 08:04:11,972 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 7 states. [2020-12-09 08:04:12,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:04:12,109 INFO L93 Difference]: Finished difference Result 76 states and 88 transitions. [2020-12-09 08:04:12,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-09 08:04:12,110 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-12-09 08:04:12,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:04:12,110 INFO L225 Difference]: With dead ends: 76 [2020-12-09 08:04:12,111 INFO L226 Difference]: Without dead ends: 74 [2020-12-09 08:04:12,111 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=68, Invalid=114, Unknown=0, NotChecked=0, Total=182 [2020-12-09 08:04:12,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-12-09 08:04:12,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 32. [2020-12-09 08:04:12,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-12-09 08:04:12,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-12-09 08:04:12,116 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 8 [2020-12-09 08:04:12,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:04:12,116 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-12-09 08:04:12,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 08:04:12,116 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-12-09 08:04:12,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 08:04:12,116 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:04:12,116 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:04:12,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:04:12,318 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:04:12,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:04:12,320 INFO L82 PathProgramCache]: Analyzing trace with hash -1236409283, now seen corresponding path program 1 times [2020-12-09 08:04:12,320 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:04:12,321 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658705382] [2020-12-09 08:04:12,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:04:12,332 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:04:12,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [912381537] [2020-12-09 08:04:12,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/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 [2020-12-09 08:04:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:04:12,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 08:04:12,472 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:04:12,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:12,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:04:12,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:12,544 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658705382] [2020-12-09 08:04:12,545 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:04:12,545 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [912381537] [2020-12-09 08:04:12,545 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:04:12,545 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 08:04:12,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040106537] [2020-12-09 08:04:12,545 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:04:12,545 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:04:12,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:04:12,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:04:12,546 INFO L87 Difference]: Start difference. First operand 32 states and 35 transitions. Second operand 6 states. [2020-12-09 08:04:12,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:04:12,621 INFO L93 Difference]: Finished difference Result 59 states and 68 transitions. [2020-12-09 08:04:12,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:04:12,622 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-12-09 08:04:12,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:04:12,622 INFO L225 Difference]: With dead ends: 59 [2020-12-09 08:04:12,622 INFO L226 Difference]: Without dead ends: 57 [2020-12-09 08:04:12,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:04:12,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-12-09 08:04:12,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 42. [2020-12-09 08:04:12,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-12-09 08:04:12,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-12-09 08:04:12,631 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 10 [2020-12-09 08:04:12,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:04:12,631 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-12-09 08:04:12,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:04:12,631 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-12-09 08:04:12,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 08:04:12,632 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:04:12,632 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:04:12,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:04:12,834 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:04:12,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:04:12,836 INFO L82 PathProgramCache]: Analyzing trace with hash 971784697, now seen corresponding path program 1 times [2020-12-09 08:04:12,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:04:12,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11273430] [2020-12-09 08:04:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:04:12,849 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:04:12,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639053737] [2020-12-09 08:04:12,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/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 [2020-12-09 08:04:12,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:04:12,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 08:04:12,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:04:13,002 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:13,002 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:04:13,042 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:13,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11273430] [2020-12-09 08:04:13,043 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:04:13,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639053737] [2020-12-09 08:04:13,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:04:13,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 08:04:13,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257688885] [2020-12-09 08:04:13,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 08:04:13,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:04:13,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 08:04:13,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:04:13,045 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-12-09 08:04:13,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:04:13,108 INFO L93 Difference]: Finished difference Result 116 states and 133 transitions. [2020-12-09 08:04:13,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 08:04:13,109 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2020-12-09 08:04:13,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:04:13,112 INFO L225 Difference]: With dead ends: 116 [2020-12-09 08:04:13,113 INFO L226 Difference]: Without dead ends: 88 [2020-12-09 08:04:13,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-12-09 08:04:13,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-12-09 08:04:13,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 70. [2020-12-09 08:04:13,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 08:04:13,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 85 transitions. [2020-12-09 08:04:13,133 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 85 transitions. Word has length 12 [2020-12-09 08:04:13,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:04:13,133 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 85 transitions. [2020-12-09 08:04:13,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 08:04:13,133 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 85 transitions. [2020-12-09 08:04:13,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-12-09 08:04:13,134 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:04:13,134 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:04:13,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:04:13,336 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:04:13,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:04:13,337 INFO L82 PathProgramCache]: Analyzing trace with hash 1516777280, now seen corresponding path program 1 times [2020-12-09 08:04:13,337 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:04:13,338 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458471418] [2020-12-09 08:04:13,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:04:13,347 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:04:13,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1958994609] [2020-12-09 08:04:13,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/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 [2020-12-09 08:04:13,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:04:13,429 INFO L263 TraceCheckSpWp]: Trace formula consists of 97 conjuncts, 19 conjunts are in the unsatisfiable core [2020-12-09 08:04:13,430 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:04:13,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:13,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:04:13,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:13,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458471418] [2020-12-09 08:04:13,492 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:04:13,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1958994609] [2020-12-09 08:04:13,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:04:13,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2020-12-09 08:04:13,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883892751] [2020-12-09 08:04:13,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 08:04:13,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:04:13,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 08:04:13,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-12-09 08:04:13,493 INFO L87 Difference]: Start difference. First operand 70 states and 85 transitions. Second operand 6 states. [2020-12-09 08:04:13,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:04:13,571 INFO L93 Difference]: Finished difference Result 75 states and 88 transitions. [2020-12-09 08:04:13,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 08:04:13,571 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-12-09 08:04:13,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:04:13,572 INFO L225 Difference]: With dead ends: 75 [2020-12-09 08:04:13,572 INFO L226 Difference]: Without dead ends: 73 [2020-12-09 08:04:13,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:04:13,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-12-09 08:04:13,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2020-12-09 08:04:13,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-12-09 08:04:13,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 82 transitions. [2020-12-09 08:04:13,585 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 82 transitions. Word has length 12 [2020-12-09 08:04:13,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:04:13,585 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 82 transitions. [2020-12-09 08:04:13,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 08:04:13,586 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 82 transitions. [2020-12-09 08:04:13,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-12-09 08:04:13,586 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 08:04:13,586 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 08:04:13,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-09 08:04:13,787 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-09 08:04:13,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 08:04:13,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1629210339, now seen corresponding path program 1 times [2020-12-09 08:04:13,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 08:04:13,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545199037] [2020-12-09 08:04:13,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 08:04:13,792 ERROR L270 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-12-09 08:04:13,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1819980629] [2020-12-09 08:04:13,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/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 [2020-12-09 08:04:13,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 08:04:13,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 24 conjunts are in the unsatisfiable core [2020-12-09 08:04:13,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 08:04:15,857 WARN L197 SmtUtils]: Spent 2.02 s on a formula simplification that was a NOOP. DAG size: 15 [2020-12-09 08:04:19,924 WARN L197 SmtUtils]: Spent 4.05 s on a formula simplification. DAG size of input: 27 DAG size of output: 17 [2020-12-09 08:04:19,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:19,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-12-09 08:04:19,959 INFO L398 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 2, 2, 1] term [2020-12-09 08:04:19,960 INFO L639 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-12-09 08:04:19,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 08:04:19,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545199037] [2020-12-09 08:04:19,999 WARN L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2020-12-09 08:04:20,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1819980629] [2020-12-09 08:04:20,000 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-12-09 08:04:20,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2020-12-09 08:04:20,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240814449] [2020-12-09 08:04:20,000 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 08:04:20,000 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 08:04:20,001 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 08:04:20,001 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:04:20,001 INFO L87 Difference]: Start difference. First operand 70 states and 82 transitions. Second operand 8 states. [2020-12-09 08:04:20,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 08:04:20,003 INFO L93 Difference]: Finished difference Result 70 states and 82 transitions. [2020-12-09 08:04:20,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-12-09 08:04:20,003 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2020-12-09 08:04:20,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 08:04:20,003 INFO L225 Difference]: With dead ends: 70 [2020-12-09 08:04:20,004 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 08:04:20,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 6.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-12-09 08:04:20,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 08:04:20,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 08:04:20,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 08:04:20,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 08:04:20,004 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2020-12-09 08:04:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 08:04:20,005 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 08:04:20,005 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 08:04:20,005 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 08:04:20,005 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 08:04:20,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2020-12-09 08:04:20,211 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-12-09 08:04:20,272 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 08:04:20,272 INFO L262 CegarLoopResult]: For program point L11(lines 11 14) no Hoare annotation was computed. [2020-12-09 08:04:20,272 INFO L258 CegarLoopResult]: At program point L11-2(lines 10 16) the Hoare annotation is: false [2020-12-09 08:04:20,273 INFO L262 CegarLoopResult]: For program point L11-3(lines 11 14) no Hoare annotation was computed. [2020-12-09 08:04:20,273 INFO L258 CegarLoopResult]: At program point L11-5(lines 10 16) the Hoare annotation is: false [2020-12-09 08:04:20,273 INFO L262 CegarLoopResult]: For program point L11-6(lines 11 14) no Hoare annotation was computed. [2020-12-09 08:04:20,273 INFO L258 CegarLoopResult]: At program point L11-8(lines 10 16) the Hoare annotation is: false [2020-12-09 08:04:20,273 INFO L262 CegarLoopResult]: For program point L11-9(lines 11 14) no Hoare annotation was computed. [2020-12-09 08:04:20,273 INFO L258 CegarLoopResult]: At program point L11-11(lines 51 52) the Hoare annotation is: false [2020-12-09 08:04:20,273 INFO L262 CegarLoopResult]: For program point L11-12(lines 11 14) no Hoare annotation was computed. [2020-12-09 08:04:20,274 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 08:04:20,274 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-12-09 08:04:20,274 INFO L258 CegarLoopResult]: At program point L11-14(lines 10 16) the Hoare annotation is: false [2020-12-09 08:04:20,274 INFO L262 CegarLoopResult]: For program point L11-15(lines 11 14) no Hoare annotation was computed. [2020-12-09 08:04:20,274 INFO L265 CegarLoopResult]: At program point L11-17(lines 10 16) the Hoare annotation is: true [2020-12-09 08:04:20,274 INFO L262 CegarLoopResult]: For program point L12(lines 12 13) no Hoare annotation was computed. [2020-12-09 08:04:20,274 INFO L262 CegarLoopResult]: For program point L12-1(lines 12 13) no Hoare annotation was computed. [2020-12-09 08:04:20,275 INFO L262 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-12-09 08:04:20,275 INFO L262 CegarLoopResult]: For program point L12-3(lines 12 13) no Hoare annotation was computed. [2020-12-09 08:04:20,275 INFO L262 CegarLoopResult]: For program point L12-4(lines 12 13) no Hoare annotation was computed. [2020-12-09 08:04:20,275 INFO L262 CegarLoopResult]: For program point L12-5(lines 12 13) no Hoare annotation was computed. [2020-12-09 08:04:20,275 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 08:04:20,275 INFO L262 CegarLoopResult]: For program point L46-1(lines 46 55) no Hoare annotation was computed. [2020-12-09 08:04:20,275 INFO L258 CegarLoopResult]: At program point L46-3(lines 46 55) the Hoare annotation is: false [2020-12-09 08:04:20,275 INFO L262 CegarLoopResult]: For program point L46-4(lines 46 55) no Hoare annotation was computed. [2020-12-09 08:04:20,276 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 08:04:20,276 INFO L262 CegarLoopResult]: For program point L40(lines 40 67) no Hoare annotation was computed. [2020-12-09 08:04:20,276 INFO L258 CegarLoopResult]: At program point L40-2(lines 7 67) the Hoare annotation is: false [2020-12-09 08:04:20,276 INFO L262 CegarLoopResult]: For program point L40-3(lines 40 67) no Hoare annotation was computed. [2020-12-09 08:04:20,276 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 08:04:20,276 INFO L262 CegarLoopResult]: For program point L41(lines 41 42) no Hoare annotation was computed. [2020-12-09 08:04:20,276 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-12-09 08:04:20,276 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2020-12-09 08:04:20,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 08:04:20 BoogieIcfgContainer [2020-12-09 08:04:20,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 08:04:20,286 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 08:04:20,286 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 08:04:20,286 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 08:04:20,286 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 08:04:10" (3/4) ... [2020-12-09 08:04:20,288 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 08:04:20,296 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2020-12-09 08:04:20,296 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2020-12-09 08:04:20,296 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2020-12-09 08:04:20,297 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 08:04:20,331 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f3c50c23-81f8-457e-a055-ae3a71546708/bin/utaipan/witness.graphml [2020-12-09 08:04:20,331 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 08:04:20,332 INFO L168 Benchmark]: Toolchain (without parser) took 10160.94 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 56.0 MB in the beginning and 29.7 MB in the end (delta: 26.3 MB). Peak memory consumption was 47.4 MB. Max. memory is 16.1 GB. [2020-12-09 08:04:20,332 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 72.0 MB in the end (delta: 136.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:04:20,332 INFO L168 Benchmark]: CACSL2BoogieTranslator took 176.10 ms. Allocated memory is still 96.5 MB. Free memory was 55.8 MB in the beginning and 71.7 MB in the end (delta: -15.8 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2020-12-09 08:04:20,333 INFO L168 Benchmark]: Boogie Procedure Inliner took 25.98 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 70.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 08:04:20,333 INFO L168 Benchmark]: Boogie Preprocessor took 18.03 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 68.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 08:04:20,333 INFO L168 Benchmark]: RCFGBuilder took 349.26 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 52.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-09 08:04:20,334 INFO L168 Benchmark]: TraceAbstraction took 9541.38 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 51.7 MB in the beginning and 33.9 MB in the end (delta: 17.8 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. [2020-12-09 08:04:20,334 INFO L168 Benchmark]: Witness Printer took 45.69 ms. Allocated memory is still 117.4 MB. Free memory was 33.9 MB in the beginning and 29.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 08:04:20,335 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 96.5 MB. Free memory was 72.2 MB in the beginning and 72.0 MB in the end (delta: 136.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 176.10 ms. Allocated memory is still 96.5 MB. Free memory was 55.8 MB in the beginning and 71.7 MB in the end (delta: -15.8 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 25.98 ms. Allocated memory is still 96.5 MB. Free memory was 71.7 MB in the beginning and 70.0 MB in the end (delta: 1.6 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.03 ms. Allocated memory is still 96.5 MB. Free memory was 70.0 MB in the beginning and 68.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 349.26 ms. Allocated memory is still 96.5 MB. Free memory was 68.6 MB in the beginning and 52.0 MB in the end (delta: 16.6 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9541.38 ms. Allocated memory was 96.5 MB in the beginning and 117.4 MB in the end (delta: 21.0 MB). Free memory was 51.7 MB in the beginning and 33.9 MB in the end (delta: 17.8 MB). Peak memory consumption was 40.9 MB. Max. memory is 16.1 GB. * Witness Printer took 45.69 ms. Allocated memory is still 117.4 MB. Free memory was 33.9 MB in the beginning and 29.7 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 13]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 51]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 46]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 7]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 10]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 33 locations, 6 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.4s, OverallIterations: 8, TraceHistogramMax: 2, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 216 SDtfs, 196 SDslu, 440 SDs, 0 SdLazy, 239 SolverSat, 64 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=70occurred in iteration=6, 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, 107 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 8 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 6.5s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 10699 SizeOfPredicates, 44 NumberOfNonLiveVariables, 713 ConjunctsInSsa, 91 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 4/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...