./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label05.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label05.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8 --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 6631d0bd13862b684e6a1ef7d33df65b972a07047361d83162cfc056e8521a6a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:25:01,322 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:25:01,347 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:25:01,402 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:25:01,403 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:25:01,408 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:25:01,412 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:25:01,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:25:01,419 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:25:01,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:25:01,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:25:01,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:25:01,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:25:01,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:25:01,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:25:01,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:25:01,437 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:25:01,438 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:25:01,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:25:01,455 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:25:01,457 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:25:01,458 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:25:01,461 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:25:01,462 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:25:01,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:25:01,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:25:01,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:25:01,469 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:25:01,470 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:25:01,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:25:01,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:25:01,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:25:01,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:25:01,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:25:01,477 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:25:01,477 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:25:01,478 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:25:01,478 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:25:01,478 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:25:01,479 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:25:01,480 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:25:01,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:25:01,529 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:25:01,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:25:01,531 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:25:01,531 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:25:01,531 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:25:01,532 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:25:01,532 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:25:01,532 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:25:01,532 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:25:01,532 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:25:01,533 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:25:01,534 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:25:01,534 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:25:01,534 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:25:01,534 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:25:01,535 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:25:01,535 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:25:01,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:25:01,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:25:01,536 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:25:01,536 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:25:01,536 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:25:01,537 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:25:01,537 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:25:01,537 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:25:01,537 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:25:01,537 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:25:01,538 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:25:01,538 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:25:01,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:25:01,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:25:01,540 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:25:01,540 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:25:01,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:25:01,541 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:25:01,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:25:01,541 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:25:01,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:25:01,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:25:01,542 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_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6631d0bd13862b684e6a1ef7d33df65b972a07047361d83162cfc056e8521a6a [2021-11-07 01:25:01,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:25:01,913 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:25:01,917 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:25:01,919 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:25:01,919 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:25:01,920 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/eca-rers2012/Problem02_label05.c [2021-11-07 01:25:02,002 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/data/1428f9744/434a9dd4919a4173b5825c5b32e0c8b6/FLAG3d3afdc3a [2021-11-07 01:25:02,641 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:25:02,642 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/sv-benchmarks/c/eca-rers2012/Problem02_label05.c [2021-11-07 01:25:02,670 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/data/1428f9744/434a9dd4919a4173b5825c5b32e0c8b6/FLAG3d3afdc3a [2021-11-07 01:25:02,876 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/data/1428f9744/434a9dd4919a4173b5825c5b32e0c8b6 [2021-11-07 01:25:02,878 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:25:02,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:25:02,893 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:02,894 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:25:02,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:25:02,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:02" (1/1) ... [2021-11-07 01:25:02,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62a8c358 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:02, skipping insertion in model container [2021-11-07 01:25:02,898 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:25:02" (1/1) ... [2021-11-07 01:25:02,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:25:02,968 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:25:03,338 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/sv-benchmarks/c/eca-rers2012/Problem02_label05.c[19738,19751] [2021-11-07 01:25:03,357 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:25:03,366 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:25:03,443 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/sv-benchmarks/c/eca-rers2012/Problem02_label05.c[19738,19751] [2021-11-07 01:25:03,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:25:03,479 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:25:03,479 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:03 WrapperNode [2021-11-07 01:25:03,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:25:03,481 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:25:03,481 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:25:03,481 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:25:03,488 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:03" (1/1) ... [2021-11-07 01:25:03,512 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:03" (1/1) ... [2021-11-07 01:25:03,575 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:25:03,582 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:25:03,582 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:25:03,583 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:25:03,592 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:03" (1/1) ... [2021-11-07 01:25:03,592 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:03" (1/1) ... [2021-11-07 01:25:03,605 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:03" (1/1) ... [2021-11-07 01:25:03,609 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:03" (1/1) ... [2021-11-07 01:25:03,632 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:03" (1/1) ... [2021-11-07 01:25:03,654 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:03" (1/1) ... [2021-11-07 01:25:03,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:03" (1/1) ... [2021-11-07 01:25:03,679 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:25:03,680 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:25:03,680 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:25:03,680 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:25:03,687 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:03" (1/1) ... [2021-11-07 01:25:03,694 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:25:03,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:25:03,722 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:25:03,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:25:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:25:03,790 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:25:03,792 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:25:03,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:25:05,658 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:25:05,658 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-11-07 01:25:05,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:05 BoogieIcfgContainer [2021-11-07 01:25:05,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:25:05,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:25:05,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:25:05,673 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:25:05,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:25:02" (1/3) ... [2021-11-07 01:25:05,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a323e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:25:05, skipping insertion in model container [2021-11-07 01:25:05,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:25:03" (2/3) ... [2021-11-07 01:25:05,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a323e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:25:05, skipping insertion in model container [2021-11-07 01:25:05,675 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:05" (3/3) ... [2021-11-07 01:25:05,676 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label05.c [2021-11-07 01:25:05,682 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:25:05,682 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 01:25:05,749 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:25:05,758 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 01:25:05,758 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-07 01:25:05,778 INFO L276 IsEmpty]: Start isEmpty. Operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:05,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 01:25:05,789 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:05,790 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:05,791 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:05,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:05,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1814583063, now seen corresponding path program 1 times [2021-11-07 01:25:05,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:25:05,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106182133] [2021-11-07 01:25:05,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:05,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:25:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:06,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:06,243 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:25:06,243 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106182133] [2021-11-07 01:25:06,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106182133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:06,245 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:06,245 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:25:06,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999851302] [2021-11-07 01:25:06,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:06,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:25:06,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:06,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:06,272 INFO L87 Difference]: Start difference. First operand has 85 states, 83 states have (on average 1.9518072289156627) internal successors, (162), 84 states have internal predecessors, (162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:06,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:06,769 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-11-07 01:25:06,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:25:06,771 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 80 [2021-11-07 01:25:06,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:06,789 INFO L225 Difference]: With dead ends: 251 [2021-11-07 01:25:06,789 INFO L226 Difference]: Without dead ends: 163 [2021-11-07 01:25:06,793 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:06,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-11-07 01:25:06,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-11-07 01:25:06,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 162 states have (on average 1.5617283950617284) internal successors, (253), 162 states have internal predecessors, (253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:06,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 253 transitions. [2021-11-07 01:25:06,874 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 253 transitions. Word has length 80 [2021-11-07 01:25:06,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:06,875 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 253 transitions. [2021-11-07 01:25:06,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.666666666666668) internal successors, (80), 2 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:06,876 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 253 transitions. [2021-11-07 01:25:06,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-07 01:25:06,882 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:06,882 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:06,883 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:25:06,883 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:06,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:06,886 INFO L85 PathProgramCache]: Analyzing trace with hash -483697862, now seen corresponding path program 1 times [2021-11-07 01:25:06,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:25:06,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591917335] [2021-11-07 01:25:06,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:06,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:25:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:07,073 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-11-07 01:25:07,074 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:25:07,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591917335] [2021-11-07 01:25:07,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591917335] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:07,075 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:07,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:25:07,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735071140] [2021-11-07 01:25:07,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:07,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:25:07,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:07,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:07,080 INFO L87 Difference]: Start difference. First operand 163 states and 253 transitions. Second operand has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:07,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:07,453 INFO L93 Difference]: Finished difference Result 325 states and 505 transitions. [2021-11-07 01:25:07,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:25:07,454 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-11-07 01:25:07,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:07,457 INFO L225 Difference]: With dead ends: 325 [2021-11-07 01:25:07,457 INFO L226 Difference]: Without dead ends: 323 [2021-11-07 01:25:07,458 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:07,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-11-07 01:25:07,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 243. [2021-11-07 01:25:07,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243 states, 242 states have (on average 1.6859504132231404) internal successors, (408), 242 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:07,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 408 transitions. [2021-11-07 01:25:07,477 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 408 transitions. Word has length 85 [2021-11-07 01:25:07,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:07,478 INFO L470 AbstractCegarLoop]: Abstraction has 243 states and 408 transitions. [2021-11-07 01:25:07,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.333333333333332) internal successors, (82), 2 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:07,479 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 408 transitions. [2021-11-07 01:25:07,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-07 01:25:07,481 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:07,482 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:07,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 01:25:07,482 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:07,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:07,483 INFO L85 PathProgramCache]: Analyzing trace with hash -329014807, now seen corresponding path program 1 times [2021-11-07 01:25:07,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:25:07,483 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377178496] [2021-11-07 01:25:07,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:07,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:25:07,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:07,531 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:07,532 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:25:07,532 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377178496] [2021-11-07 01:25:07,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377178496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:07,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:07,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:25:07,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282920941] [2021-11-07 01:25:07,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:07,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:25:07,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:07,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:07,535 INFO L87 Difference]: Start difference. First operand 243 states and 408 transitions. Second operand has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:07,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:07,903 INFO L93 Difference]: Finished difference Result 725 states and 1221 transitions. [2021-11-07 01:25:07,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:25:07,904 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-07 01:25:07,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:07,907 INFO L225 Difference]: With dead ends: 725 [2021-11-07 01:25:07,907 INFO L226 Difference]: Without dead ends: 483 [2021-11-07 01:25:07,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:07,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2021-11-07 01:25:07,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 403. [2021-11-07 01:25:07,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 402 states have (on average 1.5870646766169154) internal successors, (638), 402 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:07,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 638 transitions. [2021-11-07 01:25:07,926 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 638 transitions. Word has length 91 [2021-11-07 01:25:07,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:07,926 INFO L470 AbstractCegarLoop]: Abstraction has 403 states and 638 transitions. [2021-11-07 01:25:07,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 30.333333333333332) internal successors, (91), 2 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:07,927 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 638 transitions. [2021-11-07 01:25:07,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-07 01:25:07,931 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:07,931 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:07,931 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 01:25:07,932 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:07,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:07,932 INFO L85 PathProgramCache]: Analyzing trace with hash 137257049, now seen corresponding path program 1 times [2021-11-07 01:25:07,932 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:25:07,933 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723206280] [2021-11-07 01:25:07,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:07,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:25:07,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:07,979 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:07,980 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:25:07,980 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723206280] [2021-11-07 01:25:07,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723206280] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:07,981 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:07,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:25:07,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261189457] [2021-11-07 01:25:07,982 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:07,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:25:07,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:07,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:07,983 INFO L87 Difference]: Start difference. First operand 403 states and 638 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:08,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:08,365 INFO L93 Difference]: Finished difference Result 1205 states and 1911 transitions. [2021-11-07 01:25:08,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:25:08,366 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-07 01:25:08,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:08,370 INFO L225 Difference]: With dead ends: 1205 [2021-11-07 01:25:08,371 INFO L226 Difference]: Without dead ends: 803 [2021-11-07 01:25:08,372 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:08,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 803 states. [2021-11-07 01:25:08,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 803 to 563. [2021-11-07 01:25:08,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 562 states have (on average 1.606761565836299) internal successors, (903), 562 states have internal predecessors, (903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 903 transitions. [2021-11-07 01:25:08,396 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 903 transitions. Word has length 103 [2021-11-07 01:25:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:08,396 INFO L470 AbstractCegarLoop]: Abstraction has 563 states and 903 transitions. [2021-11-07 01:25:08,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:08,397 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 903 transitions. [2021-11-07 01:25:08,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-07 01:25:08,400 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:08,400 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:08,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 01:25:08,401 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:08,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:08,402 INFO L85 PathProgramCache]: Analyzing trace with hash -557738899, now seen corresponding path program 1 times [2021-11-07 01:25:08,402 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:25:08,402 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66900244] [2021-11-07 01:25:08,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:08,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:25:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:08,452 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:25:08,452 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66900244] [2021-11-07 01:25:08,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66900244] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:08,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:08,453 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:25:08,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496552704] [2021-11-07 01:25:08,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:08,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:25:08,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:08,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:08,455 INFO L87 Difference]: Start difference. First operand 563 states and 903 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:08,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:08,860 INFO L93 Difference]: Finished difference Result 1445 states and 2365 transitions. [2021-11-07 01:25:08,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:25:08,861 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 111 [2021-11-07 01:25:08,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:08,867 INFO L225 Difference]: With dead ends: 1445 [2021-11-07 01:25:08,867 INFO L226 Difference]: Without dead ends: 883 [2021-11-07 01:25:08,869 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:08,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-11-07 01:25:08,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 883. [2021-11-07 01:25:08,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 883 states, 882 states have (on average 1.4773242630385488) internal successors, (1303), 882 states have internal predecessors, (1303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:08,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 883 states to 883 states and 1303 transitions. [2021-11-07 01:25:08,897 INFO L78 Accepts]: Start accepts. Automaton has 883 states and 1303 transitions. Word has length 111 [2021-11-07 01:25:08,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:08,898 INFO L470 AbstractCegarLoop]: Abstraction has 883 states and 1303 transitions. [2021-11-07 01:25:08,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:08,899 INFO L276 IsEmpty]: Start isEmpty. Operand 883 states and 1303 transitions. [2021-11-07 01:25:08,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-07 01:25:08,902 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:08,902 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:08,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 01:25:08,903 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:08,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:08,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1829765018, now seen corresponding path program 1 times [2021-11-07 01:25:08,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:25:08,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194797290] [2021-11-07 01:25:08,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:08,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:25:08,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:08,948 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-07 01:25:08,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:25:08,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194797290] [2021-11-07 01:25:08,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [194797290] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:08,949 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:08,949 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 01:25:08,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248424334] [2021-11-07 01:25:08,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:08,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:25:08,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:08,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:08,951 INFO L87 Difference]: Start difference. First operand 883 states and 1303 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:09,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:09,310 INFO L93 Difference]: Finished difference Result 2565 states and 3750 transitions. [2021-11-07 01:25:09,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:25:09,311 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 121 [2021-11-07 01:25:09,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:09,320 INFO L225 Difference]: With dead ends: 2565 [2021-11-07 01:25:09,320 INFO L226 Difference]: Without dead ends: 1683 [2021-11-07 01:25:09,322 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:09,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-11-07 01:25:09,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1683. [2021-11-07 01:25:09,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.3781212841854935) internal successors, (2318), 1682 states have internal predecessors, (2318), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:09,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2318 transitions. [2021-11-07 01:25:09,370 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2318 transitions. Word has length 121 [2021-11-07 01:25:09,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:09,370 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 2318 transitions. [2021-11-07 01:25:09,371 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 2 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:09,371 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2318 transitions. [2021-11-07 01:25:09,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-11-07 01:25:09,378 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:09,378 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:09,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 01:25:09,379 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:09,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:09,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1913823947, now seen corresponding path program 1 times [2021-11-07 01:25:09,381 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:25:09,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238428007] [2021-11-07 01:25:09,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:09,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:25:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:09,490 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 01:25:09,490 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:25:09,491 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238428007] [2021-11-07 01:25:09,491 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238428007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:09,492 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:09,492 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:25:09,492 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093886138] [2021-11-07 01:25:09,493 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:09,493 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:25:09,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:09,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:09,494 INFO L87 Difference]: Start difference. First operand 1683 states and 2318 transitions. Second operand has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:09,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:09,814 INFO L93 Difference]: Finished difference Result 3685 states and 5005 transitions. [2021-11-07 01:25:09,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:25:09,814 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 150 [2021-11-07 01:25:09,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:09,827 INFO L225 Difference]: With dead ends: 3685 [2021-11-07 01:25:09,827 INFO L226 Difference]: Without dead ends: 1683 [2021-11-07 01:25:09,830 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:09,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1683 states. [2021-11-07 01:25:09,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1683 to 1683. [2021-11-07 01:25:09,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1683 states, 1682 states have (on average 1.22294887039239) internal successors, (2057), 1682 states have internal predecessors, (2057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:09,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1683 states to 1683 states and 2057 transitions. [2021-11-07 01:25:09,877 INFO L78 Accepts]: Start accepts. Automaton has 1683 states and 2057 transitions. Word has length 150 [2021-11-07 01:25:09,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:09,878 INFO L470 AbstractCegarLoop]: Abstraction has 1683 states and 2057 transitions. [2021-11-07 01:25:09,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.0) internal successors, (111), 3 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:09,879 INFO L276 IsEmpty]: Start isEmpty. Operand 1683 states and 2057 transitions. [2021-11-07 01:25:09,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2021-11-07 01:25:09,883 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:09,884 INFO L513 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:09,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 01:25:09,886 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:09,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:09,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1345558357, now seen corresponding path program 1 times [2021-11-07 01:25:09,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:25:09,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316012492] [2021-11-07 01:25:09,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:09,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:25:09,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:09,977 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-07 01:25:09,978 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:25:09,978 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316012492] [2021-11-07 01:25:09,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316012492] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:09,978 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:25:09,978 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:25:09,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027723294] [2021-11-07 01:25:09,979 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:09,979 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:25:09,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:09,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:09,984 INFO L87 Difference]: Start difference. First operand 1683 states and 2057 transitions. Second operand has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:10,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:10,235 INFO L93 Difference]: Finished difference Result 3605 states and 4378 transitions. [2021-11-07 01:25:10,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:25:10,236 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 154 [2021-11-07 01:25:10,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:10,245 INFO L225 Difference]: With dead ends: 3605 [2021-11-07 01:25:10,246 INFO L226 Difference]: Without dead ends: 1843 [2021-11-07 01:25:10,248 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:25:10,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1843 states. [2021-11-07 01:25:10,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1843 to 1763. [2021-11-07 01:25:10,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1763 states, 1762 states have (on average 1.1679909194097617) internal successors, (2058), 1762 states have internal predecessors, (2058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:10,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1763 states to 1763 states and 2058 transitions. [2021-11-07 01:25:10,292 INFO L78 Accepts]: Start accepts. Automaton has 1763 states and 2058 transitions. Word has length 154 [2021-11-07 01:25:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:10,292 INFO L470 AbstractCegarLoop]: Abstraction has 1763 states and 2058 transitions. [2021-11-07 01:25:10,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.333333333333336) internal successors, (115), 3 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 1763 states and 2058 transitions. [2021-11-07 01:25:10,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2021-11-07 01:25:10,298 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:25:10,298 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:10,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 01:25:10,299 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-07 01:25:10,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:25:10,299 INFO L85 PathProgramCache]: Analyzing trace with hash -464478708, now seen corresponding path program 1 times [2021-11-07 01:25:10,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:25:10,300 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006470209] [2021-11-07 01:25:10,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:10,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:25:10,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:10,483 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 68 proven. 58 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:25:10,483 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:25:10,483 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006470209] [2021-11-07 01:25:10,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006470209] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:25:10,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [439995766] [2021-11-07 01:25:10,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:25:10,484 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:25:10,485 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:25:10,486 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:25:10,496 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:25:10,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:25:10,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-07 01:25:10,608 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:25:11,139 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:25:11,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-07 01:25:11,523 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-11-07 01:25:11,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [439995766] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-07 01:25:11,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-11-07 01:25:11,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-11-07 01:25:11,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657490598] [2021-11-07 01:25:11,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:25:11,527 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:25:11,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:25:11,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:25:11,529 INFO L87 Difference]: Start difference. First operand 1763 states and 2058 transitions. Second operand has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:11,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:25:11,826 INFO L93 Difference]: Finished difference Result 3523 states and 4114 transitions. [2021-11-07 01:25:11,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:25:11,826 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 178 [2021-11-07 01:25:11,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:25:11,827 INFO L225 Difference]: With dead ends: 3523 [2021-11-07 01:25:11,827 INFO L226 Difference]: Without dead ends: 0 [2021-11-07 01:25:11,832 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 358 GetRequests, 353 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-11-07 01:25:11,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-07 01:25:11,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-07 01:25:11,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:11,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-07 01:25:11,833 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 178 [2021-11-07 01:25:11,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:25:11,833 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-07 01:25:11,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.0) internal successors, (150), 3 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:25:11,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-07 01:25:11,834 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-07 01:25:11,837 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 01:25:11,877 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 01:25:12,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:25:12,067 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-11-07 01:25:12,070 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:25:12,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:25:12,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-07 01:25:12,275 INFO L857 garLoopResultBuilder]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-11-07 01:25:12,276 INFO L857 garLoopResultBuilder]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-11-07 01:25:12,276 INFO L857 garLoopResultBuilder]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-11-07 01:25:12,276 INFO L857 garLoopResultBuilder]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-11-07 01:25:12,276 INFO L857 garLoopResultBuilder]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-11-07 01:25:12,276 INFO L857 garLoopResultBuilder]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-11-07 01:25:12,276 INFO L857 garLoopResultBuilder]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-11-07 01:25:12,276 INFO L857 garLoopResultBuilder]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-11-07 01:25:12,276 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-11-07 01:25:12,277 INFO L857 garLoopResultBuilder]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-11-07 01:25:12,277 INFO L857 garLoopResultBuilder]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-11-07 01:25:12,277 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-11-07 01:25:12,277 INFO L857 garLoopResultBuilder]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-11-07 01:25:12,277 INFO L857 garLoopResultBuilder]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-11-07 01:25:12,277 INFO L857 garLoopResultBuilder]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-11-07 01:25:12,277 INFO L857 garLoopResultBuilder]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-11-07 01:25:12,277 INFO L857 garLoopResultBuilder]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-11-07 01:25:12,277 INFO L857 garLoopResultBuilder]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-11-07 01:25:12,277 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-11-07 01:25:12,277 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-11-07 01:25:12,277 INFO L857 garLoopResultBuilder]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-11-07 01:25:12,277 INFO L857 garLoopResultBuilder]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-11-07 01:25:12,277 INFO L857 garLoopResultBuilder]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-11-07 01:25:12,278 INFO L857 garLoopResultBuilder]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-11-07 01:25:12,278 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-11-07 01:25:12,278 INFO L857 garLoopResultBuilder]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-11-07 01:25:12,278 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-11-07 01:25:12,278 INFO L857 garLoopResultBuilder]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-11-07 01:25:12,278 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-11-07 01:25:12,278 INFO L857 garLoopResultBuilder]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-11-07 01:25:12,278 INFO L857 garLoopResultBuilder]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-11-07 01:25:12,278 INFO L857 garLoopResultBuilder]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-11-07 01:25:12,278 INFO L857 garLoopResultBuilder]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-11-07 01:25:12,278 INFO L857 garLoopResultBuilder]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-11-07 01:25:12,278 INFO L857 garLoopResultBuilder]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-11-07 01:25:12,278 INFO L857 garLoopResultBuilder]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-11-07 01:25:12,278 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 560) no Hoare annotation was computed. [2021-11-07 01:25:12,278 INFO L857 garLoopResultBuilder]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-11-07 01:25:12,279 INFO L857 garLoopResultBuilder]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-11-07 01:25:12,279 INFO L857 garLoopResultBuilder]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-11-07 01:25:12,279 INFO L857 garLoopResultBuilder]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-11-07 01:25:12,279 INFO L857 garLoopResultBuilder]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-11-07 01:25:12,279 INFO L857 garLoopResultBuilder]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-11-07 01:25:12,279 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-11-07 01:25:12,279 INFO L857 garLoopResultBuilder]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-11-07 01:25:12,279 INFO L857 garLoopResultBuilder]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-11-07 01:25:12,279 INFO L857 garLoopResultBuilder]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-11-07 01:25:12,279 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-11-07 01:25:12,279 INFO L857 garLoopResultBuilder]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-11-07 01:25:12,279 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-11-07 01:25:12,279 INFO L857 garLoopResultBuilder]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-11-07 01:25:12,285 INFO L857 garLoopResultBuilder]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-11-07 01:25:12,285 INFO L857 garLoopResultBuilder]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-11-07 01:25:12,285 INFO L853 garLoopResultBuilder]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse3 (<= ~a28~0 10)) (.cse0 (= ~a11~0 0)) (.cse4 (not (= ~a25~0 1))) (.cse2 (<= 8 ~a17~0)) (.cse1 (= ~a19~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3) (<= ~a28~0 9) (and .cse3 .cse4) (and .cse4 .cse1) (and .cse0 .cse3) (and .cse0 .cse4) (and .cse2 .cse1))) [2021-11-07 01:25:12,286 INFO L857 garLoopResultBuilder]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-11-07 01:25:12,286 INFO L857 garLoopResultBuilder]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-11-07 01:25:12,286 INFO L860 garLoopResultBuilder]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-11-07 01:25:12,286 INFO L857 garLoopResultBuilder]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-11-07 01:25:12,286 INFO L857 garLoopResultBuilder]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-11-07 01:25:12,287 INFO L857 garLoopResultBuilder]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-11-07 01:25:12,287 INFO L857 garLoopResultBuilder]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-11-07 01:25:12,287 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-11-07 01:25:12,287 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-11-07 01:25:12,287 INFO L857 garLoopResultBuilder]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-11-07 01:25:12,288 INFO L857 garLoopResultBuilder]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-11-07 01:25:12,288 INFO L853 garLoopResultBuilder]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse3 (<= ~a28~0 10)) (.cse0 (= ~a11~0 0)) (.cse4 (not (= ~a25~0 1))) (.cse2 (<= 8 ~a17~0)) (.cse1 (= ~a19~0 1))) (or (and .cse0 .cse1) (and .cse2 .cse3) (<= ~a28~0 9) (and .cse3 .cse4) (and .cse4 .cse1) (and .cse0 .cse3) (and .cse0 .cse4) (and .cse2 .cse1))) [2021-11-07 01:25:12,289 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-11-07 01:25:12,289 INFO L857 garLoopResultBuilder]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-11-07 01:25:12,289 INFO L857 garLoopResultBuilder]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-11-07 01:25:12,289 INFO L857 garLoopResultBuilder]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-11-07 01:25:12,289 INFO L857 garLoopResultBuilder]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-11-07 01:25:12,289 INFO L857 garLoopResultBuilder]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-11-07 01:25:12,290 INFO L857 garLoopResultBuilder]: For program point L621(line 621) no Hoare annotation was computed. [2021-11-07 01:25:12,290 INFO L857 garLoopResultBuilder]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-11-07 01:25:12,290 INFO L857 garLoopResultBuilder]: For program point L556-1(lines 39 608) no Hoare annotation was computed. [2021-11-07 01:25:12,290 INFO L857 garLoopResultBuilder]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-11-07 01:25:12,290 INFO L857 garLoopResultBuilder]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-11-07 01:25:12,290 INFO L857 garLoopResultBuilder]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-11-07 01:25:12,290 INFO L857 garLoopResultBuilder]: For program point L559-1(lines 39 608) no Hoare annotation was computed. [2021-11-07 01:25:12,291 INFO L857 garLoopResultBuilder]: For program point L560(line 560) no Hoare annotation was computed. [2021-11-07 01:25:12,291 INFO L857 garLoopResultBuilder]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-11-07 01:25:12,291 INFO L857 garLoopResultBuilder]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-11-07 01:25:12,291 INFO L857 garLoopResultBuilder]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-11-07 01:25:12,291 INFO L857 garLoopResultBuilder]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-11-07 01:25:12,291 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-11-07 01:25:12,293 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:25:12,294 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 01:25:12,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 01:25:12 BoogieIcfgContainer [2021-11-07 01:25:12,308 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 01:25:12,309 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 01:25:12,309 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 01:25:12,309 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 01:25:12,310 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:25:05" (3/4) ... [2021-11-07 01:25:12,313 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-07 01:25:12,344 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-11-07 01:25:12,353 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 21 nodes and edges [2021-11-07 01:25:12,355 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-11-07 01:25:12,357 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-07 01:25:12,511 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/witness.graphml [2021-11-07 01:25:12,511 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 01:25:12,513 INFO L168 Benchmark]: Toolchain (without parser) took 9632.65 ms. Allocated memory was 113.2 MB in the beginning and 178.3 MB in the end (delta: 65.0 MB). Free memory was 75.3 MB in the beginning and 72.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 66.4 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:12,514 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 113.2 MB. Free memory was 83.3 MB in the beginning and 83.3 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 01:25:12,515 INFO L168 Benchmark]: CACSL2BoogieTranslator took 586.43 ms. Allocated memory is still 113.2 MB. Free memory was 74.9 MB in the beginning and 72.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:12,515 INFO L168 Benchmark]: Boogie Procedure Inliner took 100.11 ms. Allocated memory is still 113.2 MB. Free memory was 72.0 MB in the beginning and 66.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:12,516 INFO L168 Benchmark]: Boogie Preprocessor took 97.14 ms. Allocated memory is still 113.2 MB. Free memory was 66.7 MB in the beginning and 62.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:12,516 INFO L168 Benchmark]: RCFGBuilder took 1982.51 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 62.5 MB in the beginning and 87.3 MB in the end (delta: -24.8 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:12,517 INFO L168 Benchmark]: TraceAbstraction took 6644.38 ms. Allocated memory was 142.6 MB in the beginning and 178.3 MB in the end (delta: 35.7 MB). Free memory was 87.3 MB in the beginning and 88.1 MB in the end (delta: -743.9 kB). Peak memory consumption was 36.0 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:12,517 INFO L168 Benchmark]: Witness Printer took 202.51 ms. Allocated memory is still 178.3 MB. Free memory was 87.0 MB in the beginning and 72.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 01:25:12,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 113.2 MB. Free memory was 83.3 MB in the beginning and 83.3 MB in the end (delta: 26.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 586.43 ms. Allocated memory is still 113.2 MB. Free memory was 74.9 MB in the beginning and 72.0 MB in the end (delta: 3.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 100.11 ms. Allocated memory is still 113.2 MB. Free memory was 72.0 MB in the beginning and 66.7 MB in the end (delta: 5.3 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 97.14 ms. Allocated memory is still 113.2 MB. Free memory was 66.7 MB in the beginning and 62.5 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1982.51 ms. Allocated memory was 113.2 MB in the beginning and 142.6 MB in the end (delta: 29.4 MB). Free memory was 62.5 MB in the beginning and 87.3 MB in the end (delta: -24.8 MB). Peak memory consumption was 45.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6644.38 ms. Allocated memory was 142.6 MB in the beginning and 178.3 MB in the end (delta: 35.7 MB). Free memory was 87.3 MB in the beginning and 88.1 MB in the end (delta: -743.9 kB). Peak memory consumption was 36.0 MB. Max. memory is 16.1 GB. * Witness Printer took 202.51 ms. Allocated memory is still 178.3 MB. Free memory was 87.0 MB in the beginning and 72.4 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 560]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 6.5s, OverallIterations: 9, TraceHistogramMax: 5, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 486 SDtfs, 575 SDslu, 53 SDs, 0 SdLazy, 2070 SolverSat, 571 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 378 GetRequests, 365 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1763occurred in iteration=8, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 480 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 59 NumberOfFragments, 113 HoareAnnotationTreeSize, 3 FomulaSimplifications, 1220 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 50 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.6s InterpolantComputationTime, 1251 NumberOfCodeBlocks, 1251 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1418 ConstructedInterpolants, 0 QuantifiedInterpolants, 4098 SizeOfPredicates, 0 NumberOfNonLiveVariables, 365 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 734/792 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((((a11 == 0 && a19 == 1) || (8 <= a17 && a28 <= 10)) || a28 <= 9) || (a28 <= 10 && !(a25 == 1))) || (!(a25 == 1) && a19 == 1)) || (a11 == 0 && a28 <= 10)) || (a11 == 0 && !(a25 == 1))) || (8 <= a17 && a19 == 1) - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((((a11 == 0 && a19 == 1) || (8 <= a17 && a28 <= 10)) || a28 <= 9) || (a28 <= 10 && !(a25 == 1))) || (!(a25 == 1) && a19 == 1)) || (a11 == 0 && a28 <= 10)) || (a11 == 0 && !(a25 == 1))) || (8 <= a17 && a19 == 1) RESULT: Ultimate proved your program to be correct! [2021-11-07 01:25:12,574 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_429fae2a-5e2f-40c8-a1bd-b18761541279/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE