./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/eca-rers2012/Problem02_label20.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI/config/TaipanReach.xml -i ../../sv-benchmarks/c/eca-rers2012/Problem02_label20.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI --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 6e09c4e3c62f766a4d5c6b2391f1938dd364423c ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2021-10-11 02:32:46,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-11 02:32:46,831 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-11 02:32:46,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-11 02:32:46,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-11 02:32:46,865 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-11 02:32:46,867 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-11 02:32:46,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-11 02:32:46,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-11 02:32:46,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-11 02:32:46,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-11 02:32:46,878 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-11 02:32:46,880 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-11 02:32:46,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-11 02:32:46,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-11 02:32:46,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-11 02:32:46,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-11 02:32:46,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-11 02:32:46,899 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-11 02:32:46,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-11 02:32:46,909 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-11 02:32:46,911 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-11 02:32:46,914 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-11 02:32:46,915 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-11 02:32:46,923 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-11 02:32:46,927 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-11 02:32:46,928 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-11 02:32:46,931 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-11 02:32:46,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-11 02:32:46,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-11 02:32:46,937 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-11 02:32:46,938 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-11 02:32:46,939 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-11 02:32:46,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-11 02:32:46,943 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-11 02:32:46,943 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-11 02:32:46,944 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-11 02:32:46,944 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-11 02:32:46,944 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-11 02:32:46,945 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-11 02:32:46,946 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-11 02:32:46,948 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-11 02:32:46,994 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-11 02:32:46,994 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-11 02:32:46,995 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-11 02:32:46,996 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-11 02:32:46,996 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-11 02:32:46,996 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-11 02:32:46,997 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-11 02:32:46,997 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-11 02:32:46,997 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-11 02:32:46,997 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-11 02:32:46,998 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-11 02:32:46,999 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-11 02:32:46,999 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-11 02:32:46,999 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-11 02:32:47,000 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-11 02:32:47,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-11 02:32:47,001 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-11 02:32:47,001 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-11 02:32:47,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-11 02:32:47,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-11 02:32:47,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-11 02:32:47,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-11 02:32:47,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-11 02:32:47,002 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-11 02:32:47,003 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-11 02:32:47,003 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-11 02:32:47,003 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-11 02:32:47,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-11 02:32:47,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-11 02:32:47,006 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-11 02:32:47,006 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:47,006 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-11 02:32:47,007 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-11 02:32:47,007 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-11 02:32:47,007 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-11 02:32:47,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-11 02:32:47,008 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-11 02:32:47,008 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-11 02:32:47,008 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-11 02:32:47,008 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_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e09c4e3c62f766a4d5c6b2391f1938dd364423c [2021-10-11 02:32:47,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-11 02:32:47,300 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-11 02:32:47,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-11 02:32:47,304 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-11 02:32:47,305 INFO L275 PluginConnector]: CDTParser initialized [2021-10-11 02:32:47,306 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI/../../sv-benchmarks/c/eca-rers2012/Problem02_label20.c [2021-10-11 02:32:47,377 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI/data/0f41904fc/3db8e5c3c51f4b09b696d3dfb1276ca9/FLAG64858347b [2021-10-11 02:32:48,016 INFO L306 CDTParser]: Found 1 translation units. [2021-10-11 02:32:48,025 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/sv-benchmarks/c/eca-rers2012/Problem02_label20.c [2021-10-11 02:32:48,053 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI/data/0f41904fc/3db8e5c3c51f4b09b696d3dfb1276ca9/FLAG64858347b [2021-10-11 02:32:48,270 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI/data/0f41904fc/3db8e5c3c51f4b09b696d3dfb1276ca9 [2021-10-11 02:32:48,273 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-11 02:32:48,274 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-11 02:32:48,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:48,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-11 02:32:48,286 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-11 02:32:48,287 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:48" (1/1) ... [2021-10-11 02:32:48,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47fd4670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:48, skipping insertion in model container [2021-10-11 02:32:48,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 02:32:48" (1/1) ... [2021-10-11 02:32:48,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-11 02:32:48,364 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-11 02:32:48,675 WARN L226 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_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/sv-benchmarks/c/eca-rers2012/Problem02_label20.c[16674,16687] [2021-10-11 02:32:48,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:48,775 INFO L203 MainTranslator]: Completed pre-run [2021-10-11 02:32:48,893 WARN L226 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_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/sv-benchmarks/c/eca-rers2012/Problem02_label20.c[16674,16687] [2021-10-11 02:32:48,908 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-11 02:32:48,928 INFO L208 MainTranslator]: Completed translation [2021-10-11 02:32:48,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:48 WrapperNode [2021-10-11 02:32:48,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-11 02:32:48,931 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:48,931 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-11 02:32:48,931 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-11 02:32:48,939 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:48" (1/1) ... [2021-10-11 02:32:48,968 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:48" (1/1) ... [2021-10-11 02:32:49,028 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-11 02:32:49,028 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-11 02:32:49,029 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-11 02:32:49,029 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-11 02:32:49,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:48" (1/1) ... [2021-10-11 02:32:49,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:48" (1/1) ... [2021-10-11 02:32:49,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:48" (1/1) ... [2021-10-11 02:32:49,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:48" (1/1) ... [2021-10-11 02:32:49,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:48" (1/1) ... [2021-10-11 02:32:49,138 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:48" (1/1) ... [2021-10-11 02:32:49,144 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:48" (1/1) ... [2021-10-11 02:32:49,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-11 02:32:49,153 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-11 02:32:49,154 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-11 02:32:49,154 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-11 02:32:49,155 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:48" (1/1) ... No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-11 02:32:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-11 02:32:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-11 02:32:49,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-11 02:32:49,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-11 02:32:51,413 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-11 02:32:51,414 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-11 02:32:51,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:51 BoogieIcfgContainer [2021-10-11 02:32:51,419 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-11 02:32:51,421 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-11 02:32:51,421 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-11 02:32:51,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-11 02:32:51,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 02:32:48" (1/3) ... [2021-10-11 02:32:51,426 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0073e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:51, skipping insertion in model container [2021-10-11 02:32:51,426 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 02:32:48" (2/3) ... [2021-10-11 02:32:51,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c0073e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 02:32:51, skipping insertion in model container [2021-10-11 02:32:51,427 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:51" (3/3) ... [2021-10-11 02:32:51,429 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem02_label20.c [2021-10-11 02:32:51,443 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-11 02:32:51,446 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-10-11 02:32:51,460 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-11 02:32:51,497 INFO L377 AbstractCegarLoop]: Interprodecural is true [2021-10-11 02:32:51,497 INFO L378 AbstractCegarLoop]: Hoare is true [2021-10-11 02:32:51,498 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-10-11 02:32:51,498 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-11 02:32:51,498 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-11 02:32:51,498 INFO L382 AbstractCegarLoop]: Difference is false [2021-10-11 02:32:51,498 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-11 02:32:51,498 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-10-11 02:32:51,514 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states. [2021-10-11 02:32:51,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-10-11 02:32:51,531 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:51,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:51,532 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:51,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:51,540 INFO L82 PathProgramCache]: Analyzing trace with hash 925944390, now seen corresponding path program 1 times [2021-10-11 02:32:51,548 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:51,548 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364324850] [2021-10-11 02:32:51,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:51,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:51,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:51,912 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364324850] [2021-10-11 02:32:51,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:51,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:51,914 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662315807] [2021-10-11 02:32:51,918 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:51,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:51,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:51,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:51,933 INFO L87 Difference]: Start difference. First operand 85 states. Second operand 3 states. [2021-10-11 02:32:52,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:52,496 INFO L93 Difference]: Finished difference Result 251 states and 482 transitions. [2021-10-11 02:32:52,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:52,498 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 80 [2021-10-11 02:32:52,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:52,510 INFO L225 Difference]: With dead ends: 251 [2021-10-11 02:32:52,511 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:32:52,514 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:52,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:32:52,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:32:52,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:32:52,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 313 transitions. [2021-10-11 02:32:52,565 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 313 transitions. Word has length 80 [2021-10-11 02:32:52,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:52,566 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 313 transitions. [2021-10-11 02:32:52,566 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:52,566 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 313 transitions. [2021-10-11 02:32:52,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-10-11 02:32:52,570 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:52,571 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:52,571 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-11 02:32:52,571 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:52,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:52,572 INFO L82 PathProgramCache]: Analyzing trace with hash -1427752818, now seen corresponding path program 1 times [2021-10-11 02:32:52,572 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:52,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204320033] [2021-10-11 02:32:52,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:52,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:52,644 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:52,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204320033] [2021-10-11 02:32:52,644 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:52,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:52,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801440594] [2021-10-11 02:32:52,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:52,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:52,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:52,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:52,648 INFO L87 Difference]: Start difference. First operand 163 states and 313 transitions. Second operand 3 states. [2021-10-11 02:32:52,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:52,937 INFO L93 Difference]: Finished difference Result 325 states and 625 transitions. [2021-10-11 02:32:52,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:52,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 91 [2021-10-11 02:32:52,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:52,946 INFO L225 Difference]: With dead ends: 325 [2021-10-11 02:32:52,946 INFO L226 Difference]: Without dead ends: 163 [2021-10-11 02:32:52,948 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:52,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2021-10-11 02:32:52,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2021-10-11 02:32:52,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2021-10-11 02:32:52,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 283 transitions. [2021-10-11 02:32:52,973 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 283 transitions. Word has length 91 [2021-10-11 02:32:52,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:52,973 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 283 transitions. [2021-10-11 02:32:52,973 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:52,973 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 283 transitions. [2021-10-11 02:32:52,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-10-11 02:32:52,976 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:52,977 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:52,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-11 02:32:52,977 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:52,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:52,978 INFO L82 PathProgramCache]: Analyzing trace with hash 221744869, now seen corresponding path program 1 times [2021-10-11 02:32:52,978 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:52,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238647471] [2021-10-11 02:32:52,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:53,070 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:53,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238647471] [2021-10-11 02:32:53,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:53,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:53,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909453277] [2021-10-11 02:32:53,077 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:53,077 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:53,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:53,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:53,084 INFO L87 Difference]: Start difference. First operand 163 states and 283 transitions. Second operand 3 states. [2021-10-11 02:32:53,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:53,587 INFO L93 Difference]: Finished difference Result 485 states and 846 transitions. [2021-10-11 02:32:53,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:53,590 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2021-10-11 02:32:53,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:53,592 INFO L225 Difference]: With dead ends: 485 [2021-10-11 02:32:53,593 INFO L226 Difference]: Without dead ends: 323 [2021-10-11 02:32:53,594 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:53,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2021-10-11 02:32:53,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 323. [2021-10-11 02:32:53,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2021-10-11 02:32:53,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 464 transitions. [2021-10-11 02:32:53,625 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 464 transitions. Word has length 98 [2021-10-11 02:32:53,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:53,625 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 464 transitions. [2021-10-11 02:32:53,625 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:53,626 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 464 transitions. [2021-10-11 02:32:53,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-10-11 02:32:53,631 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:53,631 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:53,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-11 02:32:53,631 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:53,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:53,632 INFO L82 PathProgramCache]: Analyzing trace with hash 11610095, now seen corresponding path program 1 times [2021-10-11 02:32:53,632 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:53,633 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107329166] [2021-10-11 02:32:53,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:53,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:53,693 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:53,694 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107329166] [2021-10-11 02:32:53,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:53,695 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-10-11 02:32:53,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665584249] [2021-10-11 02:32:53,696 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:53,696 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:53,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:53,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:53,697 INFO L87 Difference]: Start difference. First operand 323 states and 464 transitions. Second operand 3 states. [2021-10-11 02:32:54,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:54,111 INFO L93 Difference]: Finished difference Result 885 states and 1298 transitions. [2021-10-11 02:32:54,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:54,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2021-10-11 02:32:54,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:54,117 INFO L225 Difference]: With dead ends: 885 [2021-10-11 02:32:54,117 INFO L226 Difference]: Without dead ends: 563 [2021-10-11 02:32:54,119 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:54,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 563 states. [2021-10-11 02:32:54,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 563 to 563. [2021-10-11 02:32:54,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 563 states. [2021-10-11 02:32:54,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 775 transitions. [2021-10-11 02:32:54,145 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 775 transitions. Word has length 102 [2021-10-11 02:32:54,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:54,146 INFO L481 AbstractCegarLoop]: Abstraction has 563 states and 775 transitions. [2021-10-11 02:32:54,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:54,146 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 775 transitions. [2021-10-11 02:32:54,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-10-11 02:32:54,150 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:54,151 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:54,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-11 02:32:54,151 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:54,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:54,152 INFO L82 PathProgramCache]: Analyzing trace with hash -2134438274, now seen corresponding path program 1 times [2021-10-11 02:32:54,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:54,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855188868] [2021-10-11 02:32:54,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:54,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:54,238 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855188868] [2021-10-11 02:32:54,238 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:54,239 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:54,239 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557946073] [2021-10-11 02:32:54,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:54,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:54,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:54,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:54,242 INFO L87 Difference]: Start difference. First operand 563 states and 775 transitions. Second operand 3 states. [2021-10-11 02:32:54,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:54,633 INFO L93 Difference]: Finished difference Result 1205 states and 1664 transitions. [2021-10-11 02:32:54,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:54,634 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 103 [2021-10-11 02:32:54,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:54,638 INFO L225 Difference]: With dead ends: 1205 [2021-10-11 02:32:54,638 INFO L226 Difference]: Without dead ends: 643 [2021-10-11 02:32:54,639 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:54,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 643 states. [2021-10-11 02:32:54,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 643 to 643. [2021-10-11 02:32:54,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 643 states. [2021-10-11 02:32:54,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 643 states to 643 states and 850 transitions. [2021-10-11 02:32:54,660 INFO L78 Accepts]: Start accepts. Automaton has 643 states and 850 transitions. Word has length 103 [2021-10-11 02:32:54,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:54,661 INFO L481 AbstractCegarLoop]: Abstraction has 643 states and 850 transitions. [2021-10-11 02:32:54,661 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:54,661 INFO L276 IsEmpty]: Start isEmpty. Operand 643 states and 850 transitions. [2021-10-11 02:32:54,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-11 02:32:54,663 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:54,664 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:54,664 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-11 02:32:54,664 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:54,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:54,665 INFO L82 PathProgramCache]: Analyzing trace with hash -2118180792, now seen corresponding path program 1 times [2021-10-11 02:32:54,665 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:54,665 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77779154] [2021-10-11 02:32:54,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:54,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:55,028 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 18 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:55,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77779154] [2021-10-11 02:32:55,028 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1886016406] [2021-10-11 02:32:55,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-10-11 02:32:55,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:55,145 INFO L263 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 2 conjunts are in the unsatisfiable core [2021-10-11 02:32:55,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-10-11 02:32:55,350 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:32:55,350 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-10-11 02:32:55,547 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:32:55,547 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2021-10-11 02:32:55,548 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4] total 6 [2021-10-11 02:32:55,548 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837170783] [2021-10-11 02:32:55,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:55,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:55,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:55,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:55,563 INFO L87 Difference]: Start difference. First operand 643 states and 850 transitions. Second operand 3 states. [2021-10-11 02:32:56,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:56,019 INFO L93 Difference]: Finished difference Result 1525 states and 2050 transitions. [2021-10-11 02:32:56,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:56,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2021-10-11 02:32:56,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:56,031 INFO L225 Difference]: With dead ends: 1525 [2021-10-11 02:32:56,032 INFO L226 Difference]: Without dead ends: 883 [2021-10-11 02:32:56,033 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 211 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-11 02:32:56,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2021-10-11 02:32:56,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 803. [2021-10-11 02:32:56,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 803 states. [2021-10-11 02:32:56,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1040 transitions. [2021-10-11 02:32:56,061 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1040 transitions. Word has length 107 [2021-10-11 02:32:56,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:56,062 INFO L481 AbstractCegarLoop]: Abstraction has 803 states and 1040 transitions. [2021-10-11 02:32:56,063 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:56,063 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1040 transitions. [2021-10-11 02:32:56,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-10-11 02:32:56,066 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:56,067 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:56,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-10-11 02:32:56,273 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:56,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:56,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1177506916, now seen corresponding path program 1 times [2021-10-11 02:32:56,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:56,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1192320906] [2021-10-11 02:32:56,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:56,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:56,357 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-11 02:32:56,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1192320906] [2021-10-11 02:32:56,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:56,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:56,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472343739] [2021-10-11 02:32:56,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:56,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:56,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:56,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:56,361 INFO L87 Difference]: Start difference. First operand 803 states and 1040 transitions. Second operand 3 states. [2021-10-11 02:32:56,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:56,770 INFO L93 Difference]: Finished difference Result 2005 states and 2594 transitions. [2021-10-11 02:32:56,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:56,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 120 [2021-10-11 02:32:56,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:56,776 INFO L225 Difference]: With dead ends: 2005 [2021-10-11 02:32:56,777 INFO L226 Difference]: Without dead ends: 1043 [2021-10-11 02:32:56,778 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:56,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1043 states. [2021-10-11 02:32:56,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1043 to 963. [2021-10-11 02:32:56,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2021-10-11 02:32:56,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1177 transitions. [2021-10-11 02:32:56,809 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1177 transitions. Word has length 120 [2021-10-11 02:32:56,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:56,809 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1177 transitions. [2021-10-11 02:32:56,809 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:56,810 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1177 transitions. [2021-10-11 02:32:56,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2021-10-11 02:32:56,813 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:56,813 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:56,814 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-11 02:32:56,814 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:56,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:56,814 INFO L82 PathProgramCache]: Analyzing trace with hash 964812337, now seen corresponding path program 1 times [2021-10-11 02:32:56,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:56,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919980922] [2021-10-11 02:32:56,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 116 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-10-11 02:32:56,966 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919980922] [2021-10-11 02:32:56,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:56,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:56,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193627665] [2021-10-11 02:32:56,967 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:56,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:56,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:56,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:56,968 INFO L87 Difference]: Start difference. First operand 963 states and 1177 transitions. Second operand 3 states. [2021-10-11 02:32:57,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:57,376 INFO L93 Difference]: Finished difference Result 2085 states and 2573 transitions. [2021-10-11 02:32:57,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:57,376 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2021-10-11 02:32:57,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:57,382 INFO L225 Difference]: With dead ends: 2085 [2021-10-11 02:32:57,382 INFO L226 Difference]: Without dead ends: 963 [2021-10-11 02:32:57,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:57,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2021-10-11 02:32:57,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 963. [2021-10-11 02:32:57,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 963 states. [2021-10-11 02:32:57,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1144 transitions. [2021-10-11 02:32:57,415 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1144 transitions. Word has length 171 [2021-10-11 02:32:57,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:57,415 INFO L481 AbstractCegarLoop]: Abstraction has 963 states and 1144 transitions. [2021-10-11 02:32:57,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:57,416 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1144 transitions. [2021-10-11 02:32:57,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-10-11 02:32:57,420 INFO L414 BasicCegarLoop]: Found error trace [2021-10-11 02:32:57,420 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-11 02:32:57,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-11 02:32:57,420 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-10-11 02:32:57,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-11 02:32:57,421 INFO L82 PathProgramCache]: Analyzing trace with hash -1743254966, now seen corresponding path program 1 times [2021-10-11 02:32:57,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-11 02:32:57,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269998214] [2021-10-11 02:32:57,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-11 02:32:57,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-11 02:32:57,540 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-10-11 02:32:57,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269998214] [2021-10-11 02:32:57,541 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-11 02:32:57,541 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-11 02:32:57,541 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935241630] [2021-10-11 02:32:57,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-10-11 02:32:57,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-11 02:32:57,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-11 02:32:57,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:57,543 INFO L87 Difference]: Start difference. First operand 963 states and 1144 transitions. Second operand 3 states. [2021-10-11 02:32:57,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-11 02:32:57,886 INFO L93 Difference]: Finished difference Result 2003 states and 2399 transitions. [2021-10-11 02:32:57,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-11 02:32:57,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2021-10-11 02:32:57,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-11 02:32:57,889 INFO L225 Difference]: With dead ends: 2003 [2021-10-11 02:32:57,889 INFO L226 Difference]: Without dead ends: 0 [2021-10-11 02:32:57,892 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-11 02:32:57,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-11 02:32:57,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-11 02:32:57,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-10-11 02:32:57,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-11 02:32:57,893 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 181 [2021-10-11 02:32:57,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-11 02:32:57,894 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-11 02:32:57,894 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-10-11 02:32:57,894 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-11 02:32:57,894 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-11 02:32:57,894 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-11 02:32:57,897 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-11 02:32:58,133 INFO L262 CegarLoopResult]: For program point L301(lines 301 423) no Hoare annotation was computed. [2021-10-11 02:32:58,134 INFO L262 CegarLoopResult]: For program point L235(lines 235 423) no Hoare annotation was computed. [2021-10-11 02:32:58,134 INFO L262 CegarLoopResult]: For program point L169(lines 169 423) no Hoare annotation was computed. [2021-10-11 02:32:58,134 INFO L262 CegarLoopResult]: For program point L303(lines 303 423) no Hoare annotation was computed. [2021-10-11 02:32:58,134 INFO L262 CegarLoopResult]: For program point L105(lines 105 423) no Hoare annotation was computed. [2021-10-11 02:32:58,134 INFO L262 CegarLoopResult]: For program point L40(lines 40 423) no Hoare annotation was computed. [2021-10-11 02:32:58,134 INFO L262 CegarLoopResult]: For program point L371(lines 371 423) no Hoare annotation was computed. [2021-10-11 02:32:58,134 INFO L262 CegarLoopResult]: For program point L307(lines 307 423) no Hoare annotation was computed. [2021-10-11 02:32:58,135 INFO L262 CegarLoopResult]: For program point L175(lines 175 423) no Hoare annotation was computed. [2021-10-11 02:32:58,135 INFO L262 CegarLoopResult]: For program point L109(lines 109 423) no Hoare annotation was computed. [2021-10-11 02:32:58,135 INFO L262 CegarLoopResult]: For program point L242(lines 242 423) no Hoare annotation was computed. [2021-10-11 02:32:58,135 INFO L262 CegarLoopResult]: For program point L45(lines 45 423) no Hoare annotation was computed. [2021-10-11 02:32:58,135 INFO L262 CegarLoopResult]: For program point L244(lines 244 423) no Hoare annotation was computed. [2021-10-11 02:32:58,135 INFO L262 CegarLoopResult]: For program point L179(lines 179 423) no Hoare annotation was computed. [2021-10-11 02:32:58,135 INFO L262 CegarLoopResult]: For program point L378(lines 378 423) no Hoare annotation was computed. [2021-10-11 02:32:58,136 INFO L262 CegarLoopResult]: For program point L48(lines 48 423) no Hoare annotation was computed. [2021-10-11 02:32:58,136 INFO L262 CegarLoopResult]: For program point L247(lines 247 423) no Hoare annotation was computed. [2021-10-11 02:32:58,136 INFO L262 CegarLoopResult]: For program point L116(lines 116 423) no Hoare annotation was computed. [2021-10-11 02:32:58,136 INFO L262 CegarLoopResult]: For program point L52(lines 52 423) no Hoare annotation was computed. [2021-10-11 02:32:58,136 INFO L262 CegarLoopResult]: For program point L185(lines 185 423) no Hoare annotation was computed. [2021-10-11 02:32:58,136 INFO L262 CegarLoopResult]: For program point L385(lines 385 423) no Hoare annotation was computed. [2021-10-11 02:32:58,136 INFO L262 CegarLoopResult]: For program point L319(lines 319 423) no Hoare annotation was computed. [2021-10-11 02:32:58,136 INFO L262 CegarLoopResult]: For program point L189(lines 189 423) no Hoare annotation was computed. [2021-10-11 02:32:58,137 INFO L262 CegarLoopResult]: For program point L123(lines 123 423) no Hoare annotation was computed. [2021-10-11 02:32:58,137 INFO L262 CegarLoopResult]: For program point L57(lines 57 423) no Hoare annotation was computed. [2021-10-11 02:32:58,137 INFO L262 CegarLoopResult]: For program point L388(lines 388 423) no Hoare annotation was computed. [2021-10-11 02:32:58,137 INFO L262 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-11 02:32:58,137 INFO L262 CegarLoopResult]: For program point L390(lines 390 423) no Hoare annotation was computed. [2021-10-11 02:32:58,137 INFO L262 CegarLoopResult]: For program point L324(lines 324 423) no Hoare annotation was computed. [2021-10-11 02:32:58,137 INFO L262 CegarLoopResult]: For program point L258(lines 258 423) no Hoare annotation was computed. [2021-10-11 02:32:58,137 INFO L262 CegarLoopResult]: For program point L60(lines 60 423) no Hoare annotation was computed. [2021-10-11 02:32:58,138 INFO L262 CegarLoopResult]: For program point L195(lines 195 423) no Hoare annotation was computed. [2021-10-11 02:32:58,138 INFO L262 CegarLoopResult]: For program point L129(lines 129 423) no Hoare annotation was computed. [2021-10-11 02:32:58,138 INFO L262 CegarLoopResult]: For program point L64(lines 64 423) no Hoare annotation was computed. [2021-10-11 02:32:58,138 INFO L262 CegarLoopResult]: For program point L263(lines 263 423) no Hoare annotation was computed. [2021-10-11 02:32:58,138 INFO L262 CegarLoopResult]: For program point L197(lines 197 423) no Hoare annotation was computed. [2021-10-11 02:32:58,138 INFO L262 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 479) no Hoare annotation was computed. [2021-10-11 02:32:58,138 INFO L262 CegarLoopResult]: For program point L199(lines 199 423) no Hoare annotation was computed. [2021-10-11 02:32:58,138 INFO L262 CegarLoopResult]: For program point L133(lines 133 423) no Hoare annotation was computed. [2021-10-11 02:32:58,139 INFO L262 CegarLoopResult]: For program point L399(lines 399 423) no Hoare annotation was computed. [2021-10-11 02:32:58,139 INFO L262 CegarLoopResult]: For program point L201(lines 201 423) no Hoare annotation was computed. [2021-10-11 02:32:58,139 INFO L262 CegarLoopResult]: For program point L69(lines 69 423) no Hoare annotation was computed. [2021-10-11 02:32:58,139 INFO L262 CegarLoopResult]: For program point L269(lines 269 423) no Hoare annotation was computed. [2021-10-11 02:32:58,139 INFO L262 CegarLoopResult]: For program point L204(lines 204 423) no Hoare annotation was computed. [2021-10-11 02:32:58,139 INFO L262 CegarLoopResult]: For program point L271(lines 271 423) no Hoare annotation was computed. [2021-10-11 02:32:58,139 INFO L262 CegarLoopResult]: For program point L404(lines 404 423) no Hoare annotation was computed. [2021-10-11 02:32:58,170 INFO L262 CegarLoopResult]: For program point L338(lines 338 423) no Hoare annotation was computed. [2021-10-11 02:32:58,170 INFO L262 CegarLoopResult]: For program point L140(lines 140 423) no Hoare annotation was computed. [2021-10-11 02:32:58,170 INFO L262 CegarLoopResult]: For program point L75(lines 75 423) no Hoare annotation was computed. [2021-10-11 02:32:58,170 INFO L262 CegarLoopResult]: For program point L208(lines 208 423) no Hoare annotation was computed. [2021-10-11 02:32:58,170 INFO L262 CegarLoopResult]: For program point L341(lines 341 423) no Hoare annotation was computed. [2021-10-11 02:32:58,170 INFO L262 CegarLoopResult]: For program point L408(lines 408 423) no Hoare annotation was computed. [2021-10-11 02:32:58,170 INFO L262 CegarLoopResult]: For program point L144(lines 144 423) no Hoare annotation was computed. [2021-10-11 02:32:58,171 INFO L258 CegarLoopResult]: At program point L607(lines 39 608) the Hoare annotation is: (let ((.cse3 (<= ~a17~0 7)) (.cse1 (<= ~a28~0 10)) (.cse5 (= ~a19~0 1)) (.cse4 (<= 8 ~a17~0)) (.cse2 (= ~a25~0 1)) (.cse0 (<= ~a17~0 8))) (or (and (<= ~a19~0 0) .cse0 .cse1) (and .cse2 .cse1 .cse3) (and .cse4 .cse0 .cse1) (and .cse5 (<= 10 ~a28~0) .cse3 .cse1) (and .cse5 .cse4 .cse2 .cse0))) [2021-10-11 02:32:58,171 INFO L262 CegarLoopResult]: For program point L475-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:32:58,171 INFO L262 CegarLoopResult]: For program point L79(lines 79 423) no Hoare annotation was computed. [2021-10-11 02:32:58,171 INFO L262 CegarLoopResult]: For program point L212(lines 212 423) no Hoare annotation was computed. [2021-10-11 02:32:58,171 INFO L265 CegarLoopResult]: At program point L610(lines 610 627) the Hoare annotation is: true [2021-10-11 02:32:58,171 INFO L262 CegarLoopResult]: For program point L478-1(lines 39 608) no Hoare annotation was computed. [2021-10-11 02:32:58,171 INFO L262 CegarLoopResult]: For program point L412(lines 412 423) no Hoare annotation was computed. [2021-10-11 02:32:58,171 INFO L262 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2021-10-11 02:32:58,172 INFO L262 CegarLoopResult]: For program point L347(lines 347 423) no Hoare annotation was computed. [2021-10-11 02:32:58,172 INFO L262 CegarLoopResult]: For program point L149(lines 149 423) no Hoare annotation was computed. [2021-10-11 02:32:58,172 INFO L262 CegarLoopResult]: For program point L414(lines 414 423) no Hoare annotation was computed. [2021-10-11 02:32:58,172 INFO L262 CegarLoopResult]: For program point L84(lines 84 423) no Hoare annotation was computed. [2021-10-11 02:32:58,172 INFO L262 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-11 02:32:58,172 INFO L262 CegarLoopResult]: For program point L417(lines 417 423) no Hoare annotation was computed. [2021-10-11 02:32:58,172 INFO L262 CegarLoopResult]: For program point L153(lines 153 423) no Hoare annotation was computed. [2021-10-11 02:32:58,172 INFO L258 CegarLoopResult]: At program point L616-2(lines 616 626) the Hoare annotation is: (let ((.cse3 (<= ~a17~0 7)) (.cse1 (<= ~a28~0 10)) (.cse5 (= ~a19~0 1)) (.cse4 (<= 8 ~a17~0)) (.cse2 (= ~a25~0 1)) (.cse0 (<= ~a17~0 8))) (or (and (<= ~a19~0 0) .cse0 .cse1) (and .cse2 .cse1 .cse3) (and .cse4 .cse0 .cse1) (and .cse5 (<= 10 ~a28~0) .cse3 .cse1) (and .cse5 .cse4 .cse2 .cse0))) [2021-10-11 02:32:58,172 INFO L262 CegarLoopResult]: For program point L286(lines 286 423) no Hoare annotation was computed. [2021-10-11 02:32:58,172 INFO L262 CegarLoopResult]: For program point L419(lines 419 423) no Hoare annotation was computed. [2021-10-11 02:32:58,172 INFO L262 CegarLoopResult]: For program point L222(lines 222 423) no Hoare annotation was computed. [2021-10-11 02:32:58,173 INFO L262 CegarLoopResult]: For program point L290(lines 290 423) no Hoare annotation was computed. [2021-10-11 02:32:58,173 INFO L262 CegarLoopResult]: For program point L158(lines 158 423) no Hoare annotation was computed. [2021-10-11 02:32:58,173 INFO L262 CegarLoopResult]: For program point L92(lines 92 423) no Hoare annotation was computed. [2021-10-11 02:32:58,173 INFO L262 CegarLoopResult]: For program point L621(line 621) no Hoare annotation was computed. [2021-10-11 02:32:58,173 INFO L262 CegarLoopResult]: For program point L225(lines 225 423) no Hoare annotation was computed. [2021-10-11 02:32:58,173 INFO L262 CegarLoopResult]: For program point L359(lines 359 423) no Hoare annotation was computed. [2021-10-11 02:32:58,173 INFO L262 CegarLoopResult]: For program point L293(lines 293 423) no Hoare annotation was computed. [2021-10-11 02:32:58,173 INFO L262 CegarLoopResult]: For program point L228(lines 228 423) no Hoare annotation was computed. [2021-10-11 02:32:58,173 INFO L262 CegarLoopResult]: For program point L296(lines 296 423) no Hoare annotation was computed. [2021-10-11 02:32:58,173 INFO L262 CegarLoopResult]: For program point L164(lines 164 423) no Hoare annotation was computed. [2021-10-11 02:32:58,173 INFO L262 CegarLoopResult]: For program point L364(lines 364 423) no Hoare annotation was computed. [2021-10-11 02:32:58,173 INFO L262 CegarLoopResult]: For program point L233(lines 233 423) no Hoare annotation was computed. [2021-10-11 02:32:58,173 INFO L262 CegarLoopResult]: For program point L101(lines 101 423) no Hoare annotation was computed. [2021-10-11 02:32:58,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 11.10 02:32:58 BoogieIcfgContainer [2021-10-11 02:32:58,209 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-11 02:32:58,210 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-11 02:32:58,210 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-11 02:32:58,210 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-11 02:32:58,211 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 02:32:51" (3/4) ... [2021-10-11 02:32:58,213 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-11 02:32:58,242 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 114 nodes and edges [2021-10-11 02:32:58,243 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2021-10-11 02:32:58,245 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 10 nodes and edges [2021-10-11 02:32:58,247 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-10-11 02:32:58,379 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0e8a1b3a-ed67-48ad-b535-a3b3a3e06580/bin/utaipan-WLngWcDbfI/witness.graphml [2021-10-11 02:32:58,379 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-11 02:32:58,382 INFO L168 Benchmark]: Toolchain (without parser) took 10106.06 ms. Allocated memory was 96.5 MB in the beginning and 299.9 MB in the end (delta: 203.4 MB). Free memory was 63.2 MB in the beginning and 248.2 MB in the end (delta: -185.0 MB). Peak memory consumption was 18.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:58,382 INFO L168 Benchmark]: CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory was 49.9 MB in the beginning and 49.8 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-11 02:32:58,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 648.77 ms. Allocated memory is still 96.5 MB. Free memory was 63.2 MB in the beginning and 56.7 MB in the end (delta: 6.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:58,383 INFO L168 Benchmark]: Boogie Procedure Inliner took 97.00 ms. Allocated memory is still 96.5 MB. Free memory was 56.7 MB in the beginning and 51.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:58,384 INFO L168 Benchmark]: Boogie Preprocessor took 124.07 ms. Allocated memory was 96.5 MB in the beginning and 134.2 MB in the end (delta: 37.7 MB). Free memory was 51.3 MB in the beginning and 107.6 MB in the end (delta: -56.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:58,384 INFO L168 Benchmark]: RCFGBuilder took 2265.72 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 107.5 MB in the beginning and 107.1 MB in the end (delta: 409.6 kB). Peak memory consumption was 75.4 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:58,384 INFO L168 Benchmark]: TraceAbstraction took 6788.59 ms. Allocated memory was 161.5 MB in the beginning and 299.9 MB in the end (delta: 138.4 MB). Free memory was 107.1 MB in the beginning and 263.9 MB in the end (delta: -156.8 MB). Peak memory consumption was 151.5 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:58,385 INFO L168 Benchmark]: Witness Printer took 169.45 ms. Allocated memory is still 299.9 MB. Free memory was 263.9 MB in the beginning and 248.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-10-11 02:32:58,387 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 ms. Allocated memory is still 96.5 MB. Free memory was 49.9 MB in the beginning and 49.8 MB in the end (delta: 77.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 648.77 ms. Allocated memory is still 96.5 MB. Free memory was 63.2 MB in the beginning and 56.7 MB in the end (delta: 6.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 97.00 ms. Allocated memory is still 96.5 MB. Free memory was 56.7 MB in the beginning and 51.3 MB in the end (delta: 5.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 124.07 ms. Allocated memory was 96.5 MB in the beginning and 134.2 MB in the end (delta: 37.7 MB). Free memory was 51.3 MB in the beginning and 107.6 MB in the end (delta: -56.3 MB). Peak memory consumption was 10.8 MB. Max. memory is 16.1 GB. * RCFGBuilder took 2265.72 ms. Allocated memory was 134.2 MB in the beginning and 161.5 MB in the end (delta: 27.3 MB). Free memory was 107.5 MB in the beginning and 107.1 MB in the end (delta: 409.6 kB). Peak memory consumption was 75.4 MB. Max. memory is 16.1 GB. * TraceAbstraction took 6788.59 ms. Allocated memory was 161.5 MB in the beginning and 299.9 MB in the end (delta: 138.4 MB). Free memory was 107.1 MB in the beginning and 263.9 MB in the end (delta: -156.8 MB). Peak memory consumption was 151.5 MB. Max. memory is 16.1 GB. * Witness Printer took 169.45 ms. Allocated memory is still 299.9 MB. Free memory was 263.9 MB in the beginning and 248.2 MB in the end (delta: 15.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 479]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 610]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 616]: Loop Invariant Derived loop invariant: (((((a19 <= 0 && a17 <= 8) && a28 <= 10) || ((a25 == 1 && a28 <= 10) && a17 <= 7)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((a19 == 1 && 10 <= a28) && a17 <= 7) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((((a19 <= 0 && a17 <= 8) && a28 <= 10) || ((a25 == 1 && a28 <= 10) && a17 <= 7)) || ((8 <= a17 && a17 <= 8) && a28 <= 10)) || (((a19 == 1 && 10 <= a28) && a17 <= 7) && a28 <= 10)) || (((a19 == 1 && 8 <= a17) && a25 == 1) && a17 <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.4s, OverallIterations: 9, TraceHistogramMax: 4, AutomataDifference: 3.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 634 SDtfs, 559 SDslu, 39 SDs, 0 SdLazy, 1850 SolverSat, 473 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 236 GetRequests, 223 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=963occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 160 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 3 LocationsWithAnnotation, 3 PreInvPairs, 43 NumberOfFragments, 115 HoareAnnotationTreeSize, 3 FomulaSimplifications, 554 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 3 FomulaSimplificationsInter, 76 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 1160 NumberOfCodeBlocks, 1160 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 1256 ConstructedInterpolants, 0 QuantifiedInterpolants, 427278 SizeOfPredicates, 0 NumberOfNonLiveVariables, 268 ConjunctsInSsa, 2 ConjunctsInUnsatCore, 11 InterpolantComputations, 10 PerfectInterpolantSequences, 471/487 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...