./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/psyco/psyco_security.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4e77c044 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/config/TaipanReach.xml -i ../../sv-benchmarks/c/psyco/psyco_security.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8 --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 d4a7e0762948cbc310fcf63fb24dcbf7ee6356cb ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-4e77c04 [2021-10-13 08:04:02,618 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-13 08:04:02,621 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-13 08:04:02,665 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-13 08:04:02,665 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-13 08:04:02,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-13 08:04:02,669 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-13 08:04:02,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-13 08:04:02,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-13 08:04:02,676 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-13 08:04:02,678 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-13 08:04:02,679 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-13 08:04:02,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-13 08:04:02,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-13 08:04:02,684 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-13 08:04:02,686 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-13 08:04:02,687 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-13 08:04:02,697 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-13 08:04:02,700 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-13 08:04:02,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-13 08:04:02,716 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-13 08:04:02,718 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-13 08:04:02,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-13 08:04:02,723 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-13 08:04:02,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-13 08:04:02,731 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-13 08:04:02,731 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-13 08:04:02,737 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-13 08:04:02,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-13 08:04:02,743 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-13 08:04:02,745 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-13 08:04:02,746 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-13 08:04:02,748 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-13 08:04:02,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-13 08:04:02,752 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-13 08:04:02,753 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-13 08:04:02,754 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-13 08:04:02,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-13 08:04:02,755 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-13 08:04:02,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-13 08:04:02,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-13 08:04:02,758 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-13 08:04:02,827 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-13 08:04:02,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-13 08:04:02,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-13 08:04:02,830 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-13 08:04:02,830 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-13 08:04:02,830 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-13 08:04:02,831 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-13 08:04:02,831 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-13 08:04:02,839 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-13 08:04:02,839 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-13 08:04:02,841 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-13 08:04:02,841 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-13 08:04:02,842 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-13 08:04:02,842 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-13 08:04:02,842 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-13 08:04:02,843 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-13 08:04:02,844 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-13 08:04:02,844 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-13 08:04:02,844 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-13 08:04:02,845 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-13 08:04:02,845 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-13 08:04:02,845 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-13 08:04:02,846 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-13 08:04:02,846 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-13 08:04:02,846 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-13 08:04:02,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-13 08:04:02,847 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-13 08:04:02,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-13 08:04:02,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-13 08:04:02,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-13 08:04:02,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:04:02,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-13 08:04:02,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-13 08:04:02,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-13 08:04:02,852 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-13 08:04:02,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-13 08:04:02,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-13 08:04:02,853 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-13 08:04:02,853 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-13 08:04:02,853 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_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d4a7e0762948cbc310fcf63fb24dcbf7ee6356cb [2021-10-13 08:04:03,172 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-13 08:04:03,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-13 08:04:03,203 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-13 08:04:03,205 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-13 08:04:03,206 INFO L275 PluginConnector]: CDTParser initialized [2021-10-13 08:04:03,207 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/../../sv-benchmarks/c/psyco/psyco_security.c [2021-10-13 08:04:03,323 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/data/1a0d82433/82099ef45b4743e481a20c7c4c3f6dfc/FLAGfe267555a [2021-10-13 08:04:03,909 INFO L306 CDTParser]: Found 1 translation units. [2021-10-13 08:04:03,913 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/sv-benchmarks/c/psyco/psyco_security.c [2021-10-13 08:04:03,932 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/data/1a0d82433/82099ef45b4743e481a20c7c4c3f6dfc/FLAGfe267555a [2021-10-13 08:04:04,230 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/data/1a0d82433/82099ef45b4743e481a20c7c4c3f6dfc [2021-10-13 08:04:04,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-13 08:04:04,235 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-13 08:04:04,244 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-13 08:04:04,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-13 08:04:04,249 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-13 08:04:04,250 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:04:04" (1/1) ... [2021-10-13 08:04:04,251 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48dbac22 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:04, skipping insertion in model container [2021-10-13 08:04:04,252 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 08:04:04" (1/1) ... [2021-10-13 08:04:04,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-13 08:04:04,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-13 08:04:04,540 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_9276f401-f42d-42db-99e4-df25f2213ab9/sv-benchmarks/c/psyco/psyco_security.c[12744,12757] [2021-10-13 08:04:04,550 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:04:04,561 INFO L203 MainTranslator]: Completed pre-run [2021-10-13 08:04:04,601 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_9276f401-f42d-42db-99e4-df25f2213ab9/sv-benchmarks/c/psyco/psyco_security.c[12744,12757] [2021-10-13 08:04:04,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-13 08:04:04,620 INFO L208 MainTranslator]: Completed translation [2021-10-13 08:04:04,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:04 WrapperNode [2021-10-13 08:04:04,621 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-13 08:04:04,622 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-13 08:04:04,622 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-13 08:04:04,623 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-13 08:04:04,632 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:04" (1/1) ... [2021-10-13 08:04:04,643 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:04" (1/1) ... [2021-10-13 08:04:04,677 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-13 08:04:04,678 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-13 08:04:04,679 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-13 08:04:04,679 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-13 08:04:04,689 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:04" (1/1) ... [2021-10-13 08:04:04,691 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:04" (1/1) ... [2021-10-13 08:04:04,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:04" (1/1) ... [2021-10-13 08:04:04,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:04" (1/1) ... [2021-10-13 08:04:04,717 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:04" (1/1) ... [2021-10-13 08:04:04,738 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:04" (1/1) ... [2021-10-13 08:04:04,741 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:04" (1/1) ... [2021-10-13 08:04:04,744 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-13 08:04:04,745 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-13 08:04:04,759 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-13 08:04:04,760 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-13 08:04:04,761 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:04" (1/1) ... [2021-10-13 08:04:04,770 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-13 08:04:04,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/z3 [2021-10-13 08:04:04,818 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-13 08:04:04,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-13 08:04:04,878 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-13 08:04:04,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-13 08:04:04,880 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-13 08:04:04,881 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-13 08:04:05,424 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-13 08:04:05,425 INFO L299 CfgBuilder]: Removed 22 assume(true) statements. [2021-10-13 08:04:05,427 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:04:05 BoogieIcfgContainer [2021-10-13 08:04:05,428 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-13 08:04:05,430 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-13 08:04:05,430 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-13 08:04:05,435 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-13 08:04:05,436 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 08:04:04" (1/3) ... [2021-10-13 08:04:05,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474ae800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:04:05, skipping insertion in model container [2021-10-13 08:04:05,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 08:04:04" (2/3) ... [2021-10-13 08:04:05,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@474ae800 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 08:04:05, skipping insertion in model container [2021-10-13 08:04:05,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:04:05" (3/3) ... [2021-10-13 08:04:05,443 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2021-10-13 08:04:05,462 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-13 08:04:05,463 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-13 08:04:05,525 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-13 08:04:05,535 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, mConcurrency=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 [2021-10-13 08:04:05,535 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-13 08:04:05,554 INFO L276 IsEmpty]: Start isEmpty. Operand has 76 states, 74 states have (on average 1.9594594594594594) internal successors, (145), 75 states have internal predecessors, (145), 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) [2021-10-13 08:04:05,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-13 08:04:05,559 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:05,560 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:05,560 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:05,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:05,566 INFO L82 PathProgramCache]: Analyzing trace with hash 269823665, now seen corresponding path program 1 times [2021-10-13 08:04:05,590 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:04:05,590 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044753049] [2021-10-13 08:04:05,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:05,592 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:04:05,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:05,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:05,798 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:04:05,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044753049] [2021-10-13 08:04:05,799 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044753049] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:05,799 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:05,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:04:05,805 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961002702] [2021-10-13 08:04:05,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-10-13 08:04:05,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:04:05,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-13 08:04:05,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:04:05,849 INFO L87 Difference]: Start difference. First operand has 76 states, 74 states have (on average 1.9594594594594594) internal successors, (145), 75 states have internal predecessors, (145), 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 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-13 08:04:05,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:05,902 INFO L93 Difference]: Finished difference Result 151 states and 289 transitions. [2021-10-13 08:04:05,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-13 08:04:05,904 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2021-10-13 08:04:05,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:05,920 INFO L225 Difference]: With dead ends: 151 [2021-10-13 08:04:05,920 INFO L226 Difference]: Without dead ends: 73 [2021-10-13 08:04:05,925 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-13 08:04:05,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-10-13 08:04:05,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2021-10-13 08:04:05,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 72 states have (on average 1.5) internal successors, (108), 72 states have internal predecessors, (108), 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) [2021-10-13 08:04:05,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2021-10-13 08:04:05,972 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 8 [2021-10-13 08:04:05,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:05,973 INFO L470 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2021-10-13 08:04:05,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2021-10-13 08:04:05,973 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2021-10-13 08:04:05,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-13 08:04:05,975 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:05,975 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:05,975 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-13 08:04:05,976 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:05,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:05,977 INFO L82 PathProgramCache]: Analyzing trace with hash 307090919, now seen corresponding path program 1 times [2021-10-13 08:04:05,977 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:04:05,977 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429734290] [2021-10-13 08:04:05,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:05,978 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:04:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:06,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:06,027 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:04:06,027 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429734290] [2021-10-13 08:04:06,027 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429734290] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:06,028 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:06,028 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-13 08:04:06,028 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727617190] [2021-10-13 08:04:06,030 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:04:06,030 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:04:06,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:04:06,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:06,032 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-13 08:04:06,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:06,091 INFO L93 Difference]: Finished difference Result 148 states and 219 transitions. [2021-10-13 08:04:06,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:04:06,092 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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 9 [2021-10-13 08:04:06,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:06,094 INFO L225 Difference]: With dead ends: 148 [2021-10-13 08:04:06,094 INFO L226 Difference]: Without dead ends: 76 [2021-10-13 08:04:06,095 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.7ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:06,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2021-10-13 08:04:06,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2021-10-13 08:04:06,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 75 states have (on average 1.48) internal successors, (111), 75 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) [2021-10-13 08:04:06,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 111 transitions. [2021-10-13 08:04:06,106 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 111 transitions. Word has length 9 [2021-10-13 08:04:06,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:06,106 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 111 transitions. [2021-10-13 08:04:06,107 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 2 states have internal predecessors, (9), 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) [2021-10-13 08:04:06,107 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 111 transitions. [2021-10-13 08:04:06,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-13 08:04:06,108 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:06,108 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:06,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-13 08:04:06,109 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:06,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:06,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1213654828, now seen corresponding path program 1 times [2021-10-13 08:04:06,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:04:06,110 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321000167] [2021-10-13 08:04:06,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:06,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:04:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:06,163 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:06,164 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:04:06,164 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321000167] [2021-10-13 08:04:06,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321000167] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:06,165 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:06,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:04:06,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645527765] [2021-10-13 08:04:06,166 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:04:06,166 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:04:06,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:04:06,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:06,167 INFO L87 Difference]: Start difference. First operand 76 states and 111 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-13 08:04:06,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:06,254 INFO L93 Difference]: Finished difference Result 156 states and 228 transitions. [2021-10-13 08:04:06,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:04:06,255 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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 14 [2021-10-13 08:04:06,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:06,257 INFO L225 Difference]: With dead ends: 156 [2021-10-13 08:04:06,257 INFO L226 Difference]: Without dead ends: 82 [2021-10-13 08:04:06,258 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:06,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2021-10-13 08:04:06,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2021-10-13 08:04:06,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 79 states have (on average 1.4556962025316456) internal successors, (115), 79 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) [2021-10-13 08:04:06,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 115 transitions. [2021-10-13 08:04:06,277 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 115 transitions. Word has length 14 [2021-10-13 08:04:06,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:06,278 INFO L470 AbstractCegarLoop]: Abstraction has 80 states and 115 transitions. [2021-10-13 08:04:06,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2021-10-13 08:04:06,278 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 115 transitions. [2021-10-13 08:04:06,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-13 08:04:06,285 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:06,285 INFO L512 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:06,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-13 08:04:06,285 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:06,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:06,286 INFO L82 PathProgramCache]: Analyzing trace with hash -107735230, now seen corresponding path program 1 times [2021-10-13 08:04:06,287 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:04:06,287 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340465259] [2021-10-13 08:04:06,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:06,287 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:04:06,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:06,386 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-13 08:04:06,386 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:04:06,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340465259] [2021-10-13 08:04:06,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340465259] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:06,387 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:06,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-13 08:04:06,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895250299] [2021-10-13 08:04:06,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-13 08:04:06,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:04:06,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-13 08:04:06,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:04:06,390 INFO L87 Difference]: Start difference. First operand 80 states and 115 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-10-13 08:04:06,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:06,577 INFO L93 Difference]: Finished difference Result 253 states and 361 transitions. [2021-10-13 08:04:06,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-13 08:04:06,578 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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 17 [2021-10-13 08:04:06,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:06,581 INFO L225 Difference]: With dead ends: 253 [2021-10-13 08:04:06,582 INFO L226 Difference]: Without dead ends: 163 [2021-10-13 08:04:06,587 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.1ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-10-13 08:04:06,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-13 08:04:06,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 128. [2021-10-13 08:04:06,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 127 states have (on average 1.5196850393700787) internal successors, (193), 127 states have internal predecessors, (193), 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) [2021-10-13 08:04:06,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 193 transitions. [2021-10-13 08:04:06,632 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 193 transitions. Word has length 17 [2021-10-13 08:04:06,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:06,633 INFO L470 AbstractCegarLoop]: Abstraction has 128 states and 193 transitions. [2021-10-13 08:04:06,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 states have internal predecessors, (17), 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) [2021-10-13 08:04:06,633 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 193 transitions. [2021-10-13 08:04:06,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2021-10-13 08:04:06,635 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:06,635 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:06,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-13 08:04:06,636 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:06,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:06,640 INFO L82 PathProgramCache]: Analyzing trace with hash 1275599573, now seen corresponding path program 1 times [2021-10-13 08:04:06,640 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:04:06,641 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958520336] [2021-10-13 08:04:06,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:06,641 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:04:06,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:06,707 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 08:04:06,707 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:04:06,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958520336] [2021-10-13 08:04:06,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958520336] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:06,708 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:06,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:04:06,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650396012] [2021-10-13 08:04:06,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:04:06,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:04:06,711 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:04:06,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:06,711 INFO L87 Difference]: Start difference. First operand 128 states and 193 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-13 08:04:06,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:06,775 INFO L93 Difference]: Finished difference Result 218 states and 334 transitions. [2021-10-13 08:04:06,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:04:06,775 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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 21 [2021-10-13 08:04:06,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:06,777 INFO L225 Difference]: With dead ends: 218 [2021-10-13 08:04:06,777 INFO L226 Difference]: Without dead ends: 92 [2021-10-13 08:04:06,778 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:06,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-13 08:04:06,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2021-10-13 08:04:06,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 91 states have (on average 1.5054945054945055) internal successors, (137), 91 states have internal predecessors, (137), 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) [2021-10-13 08:04:06,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 137 transitions. [2021-10-13 08:04:06,789 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 137 transitions. Word has length 21 [2021-10-13 08:04:06,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:06,790 INFO L470 AbstractCegarLoop]: Abstraction has 92 states and 137 transitions. [2021-10-13 08:04:06,790 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 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) [2021-10-13 08:04:06,790 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 137 transitions. [2021-10-13 08:04:06,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2021-10-13 08:04:06,792 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:06,792 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:06,792 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-13 08:04:06,793 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:06,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:06,794 INFO L82 PathProgramCache]: Analyzing trace with hash -922672237, now seen corresponding path program 1 times [2021-10-13 08:04:06,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:04:06,794 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826209885] [2021-10-13 08:04:06,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:06,795 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:04:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:06,883 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 08:04:06,885 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:04:06,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826209885] [2021-10-13 08:04:06,886 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826209885] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:06,886 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:06,886 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:04:06,887 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081762962] [2021-10-13 08:04:06,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:04:06,890 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:04:06,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:04:06,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:06,895 INFO L87 Difference]: Start difference. First operand 92 states and 137 transitions. Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-13 08:04:06,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:06,978 INFO L93 Difference]: Finished difference Result 178 states and 265 transitions. [2021-10-13 08:04:06,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:04:06,979 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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 25 [2021-10-13 08:04:06,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:06,981 INFO L225 Difference]: With dead ends: 178 [2021-10-13 08:04:06,981 INFO L226 Difference]: Without dead ends: 104 [2021-10-13 08:04:06,982 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:06,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2021-10-13 08:04:06,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2021-10-13 08:04:06,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 93 states have internal predecessors, (131), 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) [2021-10-13 08:04:06,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 131 transitions. [2021-10-13 08:04:06,991 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 131 transitions. Word has length 25 [2021-10-13 08:04:06,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:06,992 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 131 transitions. [2021-10-13 08:04:06,992 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 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) [2021-10-13 08:04:06,992 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 131 transitions. [2021-10-13 08:04:06,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 08:04:06,994 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:06,994 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:06,994 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-13 08:04:06,995 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:06,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:06,995 INFO L82 PathProgramCache]: Analyzing trace with hash -1682202286, now seen corresponding path program 1 times [2021-10-13 08:04:06,996 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:04:06,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266540216] [2021-10-13 08:04:06,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:06,997 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:04:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 08:04:07,038 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:04:07,038 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266540216] [2021-10-13 08:04:07,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266540216] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:07,039 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:07,039 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:04:07,039 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2038325619] [2021-10-13 08:04:07,040 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:04:07,040 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:04:07,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:04:07,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:07,041 INFO L87 Difference]: Start difference. First operand 94 states and 131 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-10-13 08:04:07,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:07,080 INFO L93 Difference]: Finished difference Result 161 states and 224 transitions. [2021-10-13 08:04:07,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:04:07,080 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 26 [2021-10-13 08:04:07,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:07,082 INFO L225 Difference]: With dead ends: 161 [2021-10-13 08:04:07,082 INFO L226 Difference]: Without dead ends: 87 [2021-10-13 08:04:07,083 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:07,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2021-10-13 08:04:07,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2021-10-13 08:04:07,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 86 states have (on average 1.3255813953488371) internal successors, (114), 86 states have internal predecessors, (114), 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) [2021-10-13 08:04:07,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2021-10-13 08:04:07,091 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 26 [2021-10-13 08:04:07,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:07,092 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2021-10-13 08:04:07,092 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-10-13 08:04:07,092 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2021-10-13 08:04:07,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-10-13 08:04:07,094 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:07,094 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:07,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-13 08:04:07,095 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:07,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:07,096 INFO L82 PathProgramCache]: Analyzing trace with hash -1545848131, now seen corresponding path program 1 times [2021-10-13 08:04:07,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:04:07,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942628570] [2021-10-13 08:04:07,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:07,097 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:04:07,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:07,133 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 08:04:07,133 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:04:07,133 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942628570] [2021-10-13 08:04:07,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942628570] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:07,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:07,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:04:07,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035146020] [2021-10-13 08:04:07,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:04:07,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:04:07,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:04:07,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:07,137 INFO L87 Difference]: Start difference. First operand 87 states and 114 transitions. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-10-13 08:04:07,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:07,182 INFO L93 Difference]: Finished difference Result 132 states and 175 transitions. [2021-10-13 08:04:07,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:04:07,183 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 26 [2021-10-13 08:04:07,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:07,184 INFO L225 Difference]: With dead ends: 132 [2021-10-13 08:04:07,184 INFO L226 Difference]: Without dead ends: 65 [2021-10-13 08:04:07,185 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.3ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:07,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2021-10-13 08:04:07,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2021-10-13 08:04:07,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 64 states have (on average 1.296875) internal successors, (83), 64 states have internal predecessors, (83), 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) [2021-10-13 08:04:07,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 83 transitions. [2021-10-13 08:04:07,197 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 83 transitions. Word has length 26 [2021-10-13 08:04:07,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:07,198 INFO L470 AbstractCegarLoop]: Abstraction has 65 states and 83 transitions. [2021-10-13 08:04:07,198 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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) [2021-10-13 08:04:07,198 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 83 transitions. [2021-10-13 08:04:07,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-10-13 08:04:07,200 INFO L504 BasicCegarLoop]: Found error trace [2021-10-13 08:04:07,200 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-13 08:04:07,200 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-13 08:04:07,200 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-13 08:04:07,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-13 08:04:07,201 INFO L82 PathProgramCache]: Analyzing trace with hash -429138385, now seen corresponding path program 1 times [2021-10-13 08:04:07,201 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-13 08:04:07,201 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809834134] [2021-10-13 08:04:07,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-13 08:04:07,202 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-13 08:04:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-13 08:04:07,294 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-10-13 08:04:07,294 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-13 08:04:07,294 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809834134] [2021-10-13 08:04:07,294 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809834134] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-13 08:04:07,295 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-13 08:04:07,295 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-13 08:04:07,295 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99501719] [2021-10-13 08:04:07,296 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-13 08:04:07,296 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-13 08:04:07,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-13 08:04:07,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:07,297 INFO L87 Difference]: Start difference. First operand 65 states and 83 transitions. Second operand has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-10-13 08:04:07,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-13 08:04:07,331 INFO L93 Difference]: Finished difference Result 106 states and 138 transitions. [2021-10-13 08:04:07,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-13 08:04:07,332 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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 28 [2021-10-13 08:04:07,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-13 08:04:07,332 INFO L225 Difference]: With dead ends: 106 [2021-10-13 08:04:07,332 INFO L226 Difference]: Without dead ends: 0 [2021-10-13 08:04:07,333 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-13 08:04:07,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-13 08:04:07,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-13 08:04:07,334 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) [2021-10-13 08:04:07,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-13 08:04:07,334 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2021-10-13 08:04:07,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-13 08:04:07,335 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-13 08:04:07,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.0) internal successors, (27), 3 states have internal predecessors, (27), 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) [2021-10-13 08:04:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-13 08:04:07,335 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-13 08:04:07,342 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-13 08:04:07,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-13 08:04:07,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-13 08:04:07,352 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:04:07,375 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:04:07,384 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:04:07,387 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-13 08:04:07,454 INFO L857 garLoopResultBuilder]: For program point L250(lines 250 265) no Hoare annotation was computed. [2021-10-13 08:04:07,454 INFO L857 garLoopResultBuilder]: For program point L118(lines 118 133) no Hoare annotation was computed. [2021-10-13 08:04:07,454 INFO L857 garLoopResultBuilder]: For program point L52(lines 52 63) no Hoare annotation was computed. [2021-10-13 08:04:07,455 INFO L857 garLoopResultBuilder]: For program point L366(lines 366 381) no Hoare annotation was computed. [2021-10-13 08:04:07,455 INFO L857 garLoopResultBuilder]: For program point L234(lines 234 249) no Hoare annotation was computed. [2021-10-13 08:04:07,455 INFO L857 garLoopResultBuilder]: For program point L168(lines 168 179) no Hoare annotation was computed. [2021-10-13 08:04:07,455 INFO L857 garLoopResultBuilder]: For program point L102(lines 102 117) no Hoare annotation was computed. [2021-10-13 08:04:07,456 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 38) no Hoare annotation was computed. [2021-10-13 08:04:07,456 INFO L853 garLoopResultBuilder]: At program point L383(lines 24 387) the Hoare annotation is: (or (and (= 2 ULTIMATE.start_main_~this_state~0) (= ULTIMATE.start_main_~q~0 3)) (and (= 3 ULTIMATE.start_main_~this_state~0) (<= 4 ULTIMATE.start_main_~q~0)) (= ULTIMATE.start_main_~q~0 0) (and (= ULTIMATE.start_main_~q~0 2) (= ULTIMATE.start_main_~this_state~0 0))) [2021-10-13 08:04:07,456 INFO L857 garLoopResultBuilder]: For program point L350(lines 350 365) no Hoare annotation was computed. [2021-10-13 08:04:07,456 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-13 08:04:07,457 INFO L857 garLoopResultBuilder]: For program point L218(lines 218 233) no Hoare annotation was computed. [2021-10-13 08:04:07,457 INFO L857 garLoopResultBuilder]: For program point L185(lines 185 284) no Hoare annotation was computed. [2021-10-13 08:04:07,457 INFO L857 garLoopResultBuilder]: For program point L152(lines 152 163) no Hoare annotation was computed. [2021-10-13 08:04:07,457 INFO L857 garLoopResultBuilder]: For program point L334(lines 334 349) no Hoare annotation was computed. [2021-10-13 08:04:07,458 INFO L857 garLoopResultBuilder]: For program point L268(lines 268 279) no Hoare annotation was computed. [2021-10-13 08:04:07,458 INFO L857 garLoopResultBuilder]: For program point L202(lines 202 217) no Hoare annotation was computed. [2021-10-13 08:04:07,458 INFO L857 garLoopResultBuilder]: For program point L136(lines 136 147) no Hoare annotation was computed. [2021-10-13 08:04:07,458 INFO L857 garLoopResultBuilder]: For program point L318(lines 318 333) no Hoare annotation was computed. [2021-10-13 08:04:07,458 INFO L857 garLoopResultBuilder]: For program point L285(lines 285 384) no Hoare annotation was computed. [2021-10-13 08:04:07,461 INFO L857 garLoopResultBuilder]: For program point L252(lines 252 263) no Hoare annotation was computed. [2021-10-13 08:04:07,462 INFO L857 garLoopResultBuilder]: For program point L186(lines 186 201) no Hoare annotation was computed. [2021-10-13 08:04:07,462 INFO L857 garLoopResultBuilder]: For program point L120(lines 120 131) no Hoare annotation was computed. [2021-10-13 08:04:07,462 INFO L857 garLoopResultBuilder]: For program point L368(lines 368 379) no Hoare annotation was computed. [2021-10-13 08:04:07,463 INFO L857 garLoopResultBuilder]: For program point L302(lines 302 317) no Hoare annotation was computed. [2021-10-13 08:04:07,463 INFO L857 garLoopResultBuilder]: For program point L236(lines 236 247) no Hoare annotation was computed. [2021-10-13 08:04:07,463 INFO L857 garLoopResultBuilder]: For program point L104(lines 104 115) no Hoare annotation was computed. [2021-10-13 08:04:07,463 INFO L857 garLoopResultBuilder]: For program point L352(lines 352 363) no Hoare annotation was computed. [2021-10-13 08:04:07,463 INFO L857 garLoopResultBuilder]: For program point L286(lines 286 301) no Hoare annotation was computed. [2021-10-13 08:04:07,464 INFO L857 garLoopResultBuilder]: For program point L220(lines 220 231) no Hoare annotation was computed. [2021-10-13 08:04:07,464 INFO L857 garLoopResultBuilder]: For program point L88(lines 88 90) no Hoare annotation was computed. [2021-10-13 08:04:07,464 INFO L857 garLoopResultBuilder]: For program point L336(lines 336 347) no Hoare annotation was computed. [2021-10-13 08:04:07,468 INFO L857 garLoopResultBuilder]: For program point L204(lines 204 215) no Hoare annotation was computed. [2021-10-13 08:04:07,468 INFO L857 garLoopResultBuilder]: For program point L72(lines 72 74) no Hoare annotation was computed. [2021-10-13 08:04:07,468 INFO L857 garLoopResultBuilder]: For program point L320(lines 320 331) no Hoare annotation was computed. [2021-10-13 08:04:07,469 INFO L857 garLoopResultBuilder]: For program point L188(lines 188 199) no Hoare annotation was computed. [2021-10-13 08:04:07,469 INFO L857 garLoopResultBuilder]: For program point L56(lines 56 58) no Hoare annotation was computed. [2021-10-13 08:04:07,470 INFO L857 garLoopResultBuilder]: For program point L304(lines 304 315) no Hoare annotation was computed. [2021-10-13 08:04:07,470 INFO L857 garLoopResultBuilder]: For program point L172(lines 172 174) no Hoare annotation was computed. [2021-10-13 08:04:07,470 INFO L857 garLoopResultBuilder]: For program point L288(lines 288 299) no Hoare annotation was computed. [2021-10-13 08:04:07,471 INFO L857 garLoopResultBuilder]: For program point L156(lines 156 158) no Hoare annotation was computed. [2021-10-13 08:04:07,471 INFO L853 garLoopResultBuilder]: At program point L24-2(lines 24 387) the Hoare annotation is: (or (and (= 3 ULTIMATE.start_main_~this_state~0) (<= 4 ULTIMATE.start_main_~q~0)) (and (not (= 2 ULTIMATE.start_main_~this_state~0)) (= ULTIMATE.start_main_~q~0 0))) [2021-10-13 08:04:07,471 INFO L857 garLoopResultBuilder]: For program point L24-3(lines 24 387) no Hoare annotation was computed. [2021-10-13 08:04:07,471 INFO L857 garLoopResultBuilder]: For program point L272(lines 272 274) no Hoare annotation was computed. [2021-10-13 08:04:07,471 INFO L857 garLoopResultBuilder]: For program point L140(lines 140 142) no Hoare annotation was computed. [2021-10-13 08:04:07,472 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-13 08:04:07,472 INFO L857 garLoopResultBuilder]: For program point L256(lines 256 258) no Hoare annotation was computed. [2021-10-13 08:04:07,472 INFO L857 garLoopResultBuilder]: For program point L124(lines 124 126) no Hoare annotation was computed. [2021-10-13 08:04:07,472 INFO L857 garLoopResultBuilder]: For program point L372(lines 372 374) no Hoare annotation was computed. [2021-10-13 08:04:07,473 INFO L857 garLoopResultBuilder]: For program point L240(lines 240 242) no Hoare annotation was computed. [2021-10-13 08:04:07,473 INFO L857 garLoopResultBuilder]: For program point L108(lines 108 110) no Hoare annotation was computed. [2021-10-13 08:04:07,473 INFO L857 garLoopResultBuilder]: For program point L356(lines 356 358) no Hoare annotation was computed. [2021-10-13 08:04:07,473 INFO L857 garLoopResultBuilder]: For program point L224(lines 224 226) no Hoare annotation was computed. [2021-10-13 08:04:07,474 INFO L853 garLoopResultBuilder]: At program point L373(lines 15 392) the Hoare annotation is: false [2021-10-13 08:04:07,474 INFO L857 garLoopResultBuilder]: For program point L340(lines 340 342) no Hoare annotation was computed. [2021-10-13 08:04:07,474 INFO L857 garLoopResultBuilder]: For program point L208(lines 208 210) no Hoare annotation was computed. [2021-10-13 08:04:07,474 INFO L857 garLoopResultBuilder]: For program point L324(lines 324 326) no Hoare annotation was computed. [2021-10-13 08:04:07,475 INFO L857 garLoopResultBuilder]: For program point L192(lines 192 194) no Hoare annotation was computed. [2021-10-13 08:04:07,475 INFO L857 garLoopResultBuilder]: For program point L308(lines 308 310) no Hoare annotation was computed. [2021-10-13 08:04:07,475 INFO L857 garLoopResultBuilder]: For program point L292(lines 292 294) no Hoare annotation was computed. [2021-10-13 08:04:07,475 INFO L857 garLoopResultBuilder]: For program point L29(lines 29 48) no Hoare annotation was computed. [2021-10-13 08:04:07,476 INFO L857 garLoopResultBuilder]: For program point L30(lines 30 45) no Hoare annotation was computed. [2021-10-13 08:04:07,477 INFO L860 garLoopResultBuilder]: At program point L15(lines 15 392) the Hoare annotation is: true [2021-10-13 08:04:07,477 INFO L857 garLoopResultBuilder]: For program point L32(lines 32 43) no Hoare annotation was computed. [2021-10-13 08:04:07,477 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 391) no Hoare annotation was computed. [2021-10-13 08:04:07,477 INFO L857 garLoopResultBuilder]: For program point L82(lines 82 97) no Hoare annotation was computed. [2021-10-13 08:04:07,478 INFO L857 garLoopResultBuilder]: For program point L49(lines 49 100) no Hoare annotation was computed. [2021-10-13 08:04:07,478 INFO L857 garLoopResultBuilder]: For program point L66(lines 66 81) no Hoare annotation was computed. [2021-10-13 08:04:07,478 INFO L857 garLoopResultBuilder]: For program point L50(lines 50 65) no Hoare annotation was computed. [2021-10-13 08:04:07,478 INFO L857 garLoopResultBuilder]: For program point L166(lines 166 181) no Hoare annotation was computed. [2021-10-13 08:04:07,478 INFO L857 garLoopResultBuilder]: For program point L150(lines 150 165) no Hoare annotation was computed. [2021-10-13 08:04:07,479 INFO L857 garLoopResultBuilder]: For program point L84(lines 84 95) no Hoare annotation was computed. [2021-10-13 08:04:07,479 INFO L857 garLoopResultBuilder]: For program point L266(lines 266 281) no Hoare annotation was computed. [2021-10-13 08:04:07,479 INFO L857 garLoopResultBuilder]: For program point L134(lines 134 149) no Hoare annotation was computed. [2021-10-13 08:04:07,479 INFO L857 garLoopResultBuilder]: For program point L101(lines 101 184) no Hoare annotation was computed. [2021-10-13 08:04:07,480 INFO L857 garLoopResultBuilder]: For program point L68(lines 68 79) no Hoare annotation was computed. [2021-10-13 08:04:07,486 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-13 08:04:07,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 08:04:07 BoogieIcfgContainer [2021-10-13 08:04:07,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-13 08:04:07,510 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-13 08:04:07,510 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-13 08:04:07,511 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-13 08:04:07,511 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 08:04:05" (3/4) ... [2021-10-13 08:04:07,515 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-13 08:04:07,542 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 8 nodes and edges [2021-10-13 08:04:07,544 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-13 08:04:07,544 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:04:07,544 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-13 08:04:07,589 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/witness.graphml [2021-10-13 08:04:07,595 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-13 08:04:07,597 INFO L168 Benchmark]: Toolchain (without parser) took 3360.33 ms. Allocated memory was 98.6 MB in the beginning and 132.1 MB in the end (delta: 33.6 MB). Free memory was 64.9 MB in the beginning and 65.0 MB in the end (delta: -115.8 kB). Peak memory consumption was 34.3 MB. Max. memory is 16.1 GB. [2021-10-13 08:04:07,598 INFO L168 Benchmark]: CDTParser took 0.38 ms. Allocated memory is still 98.6 MB. Free memory was 50.9 MB in the beginning and 50.9 MB in the end (delta: 40.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-13 08:04:07,599 INFO L168 Benchmark]: CACSL2BoogieTranslator took 376.80 ms. Allocated memory is still 98.6 MB. Free memory was 64.7 MB in the beginning and 73.0 MB in the end (delta: -8.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-13 08:04:07,600 INFO L168 Benchmark]: Boogie Procedure Inliner took 55.64 ms. Allocated memory is still 98.6 MB. Free memory was 73.0 MB in the beginning and 71.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:04:07,600 INFO L168 Benchmark]: Boogie Preprocessor took 66.08 ms. Allocated memory is still 98.6 MB. Free memory was 70.9 MB in the beginning and 69.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:04:07,601 INFO L168 Benchmark]: RCFGBuilder took 682.61 ms. Allocated memory is still 98.6 MB. Free memory was 69.4 MB in the beginning and 52.9 MB in the end (delta: 16.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-13 08:04:07,602 INFO L168 Benchmark]: TraceAbstraction took 2079.86 ms. Allocated memory was 98.6 MB in the beginning and 132.1 MB in the end (delta: 33.6 MB). Free memory was 52.3 MB in the beginning and 67.1 MB in the end (delta: -14.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. [2021-10-13 08:04:07,609 INFO L168 Benchmark]: Witness Printer took 84.70 ms. Allocated memory is still 132.1 MB. Free memory was 67.1 MB in the beginning and 65.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-13 08:04:07,612 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.38 ms. Allocated memory is still 98.6 MB. Free memory was 50.9 MB in the beginning and 50.9 MB in the end (delta: 40.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 376.80 ms. Allocated memory is still 98.6 MB. Free memory was 64.7 MB in the beginning and 73.0 MB in the end (delta: -8.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 55.64 ms. Allocated memory is still 98.6 MB. Free memory was 73.0 MB in the beginning and 71.2 MB in the end (delta: 1.8 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 66.08 ms. Allocated memory is still 98.6 MB. Free memory was 70.9 MB in the beginning and 69.4 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 682.61 ms. Allocated memory is still 98.6 MB. Free memory was 69.4 MB in the beginning and 52.9 MB in the end (delta: 16.5 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2079.86 ms. Allocated memory was 98.6 MB in the beginning and 132.1 MB in the end (delta: 33.6 MB). Free memory was 52.3 MB in the beginning and 67.1 MB in the end (delta: -14.8 MB). Peak memory consumption was 20.4 MB. Max. memory is 16.1 GB. * Witness Printer took 84.70 ms. Allocated memory is still 132.1 MB. Free memory was 67.1 MB in the beginning and 65.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 391]: 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, 76 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1962.4ms, OverallIterations: 9, TraceHistogramMax: 3, EmptinessCheckTime: 24.6ms, AutomataDifference: 752.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 107.6ms, InitialAbstractionConstructionTime: 14.5ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 870 SDtfs, 282 SDslu, 449 SDs, 0 SdLazy, 244 SolverSat, 74 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 369.6ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 31.2ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=128occurred in iteration=4, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 144.0ms AutomataMinimizationTime, 9 MinimizatonAttempts, 47 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 11 NumberOfFragments, 43 HoareAnnotationTreeSize, 4 FomulaSimplifications, 8 FormulaSimplificationTreeSizeReduction, 36.6ms HoareSimplificationTime, 4 FomulaSimplificationsInter, 17 FormulaSimplificationTreeSizeReductionInter, 62.0ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 30.5ms SsaConstructionTime, 182.3ms SatisfiabilityAnalysisTime, 406.3ms InterpolantComputationTime, 174 NumberOfCodeBlocks, 174 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 165 ConstructedInterpolants, 0 QuantifiedInterpolants, 280 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 43/43 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: 24]: Loop Invariant Derived loop invariant: (((2 == this_state && q == 3) || (3 == this_state && 4 <= q)) || q == 0) || (q == 2 && this_state == 0) - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: (3 == this_state && 4 <= q) || (!(2 == this_state) && q == 0) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 RESULT: Ultimate proved your program to be correct! [2021-10-13 08:04:07,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9276f401-f42d-42db-99e4-df25f2213ab9/bin/utaipan-q2qaUkNPG8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...