./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 69874e26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c -s /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash defe4a000b54820195525cab63f7790d3323d50a .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.2.0-69874e2 [2020-12-01 14:58:53,821 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 14:58:53,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 14:58:53,869 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 14:58:53,870 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 14:58:53,871 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 14:58:53,873 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 14:58:53,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 14:58:53,878 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 14:58:53,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 14:58:53,888 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 14:58:53,889 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 14:58:53,890 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 14:58:53,891 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 14:58:53,892 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 14:58:53,894 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 14:58:53,895 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 14:58:53,896 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 14:58:53,898 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 14:58:53,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 14:58:53,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 14:58:53,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 14:58:53,905 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 14:58:53,906 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 14:58:53,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 14:58:53,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 14:58:53,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 14:58:53,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 14:58:53,919 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 14:58:53,920 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 14:58:53,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 14:58:53,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 14:58:53,923 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 14:58:53,924 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 14:58:53,925 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 14:58:53,925 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 14:58:53,926 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 14:58:53,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 14:58:53,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 14:58:53,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 14:58:53,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 14:58:53,937 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 14:58:53,981 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 14:58:53,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 14:58:53,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 14:58:53,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 14:58:53,984 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 14:58:53,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 14:58:53,984 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 14:58:53,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 14:58:53,986 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 14:58:53,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 14:58:53,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 14:58:53,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 14:58:53,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 14:58:53,988 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 14:58:53,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 14:58:53,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 14:58:53,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 14:58:53,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 14:58:53,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 14:58:53,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 14:58:53,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 14:58:53,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:58:53,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 14:58:53,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 14:58:53,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 14:58:53,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 14:58:53,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 14:58:53,991 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 14:58:53,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 14:58:53,991 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> defe4a000b54820195525cab63f7790d3323d50a [2020-12-01 14:58:54,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 14:58:54,295 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 14:58:54,298 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 14:58:54,299 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 14:58:54,301 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 14:58:54,302 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/../../sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c [2020-12-01 14:58:54,379 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/data/2ab906f31/894e4e35b59046bbb8b5f485e6fd9338/FLAG6e335575b [2020-12-01 14:58:54,912 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 14:58:54,913 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/sv-benchmarks/c/openssl-simplified/s3_srvr_11.cil.c [2020-12-01 14:58:54,925 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/data/2ab906f31/894e4e35b59046bbb8b5f485e6fd9338/FLAG6e335575b [2020-12-01 14:58:55,250 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/data/2ab906f31/894e4e35b59046bbb8b5f485e6fd9338 [2020-12-01 14:58:55,253 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 14:58:55,254 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 14:58:55,256 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 14:58:55,257 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 14:58:55,260 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 14:58:55,261 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:58:55" (1/1) ... [2020-12-01 14:58:55,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1336fe0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:55, skipping insertion in model container [2020-12-01 14:58:55,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 02:58:55" (1/1) ... [2020-12-01 14:58:55,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 14:58:55,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 14:58:55,542 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:58:55,555 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 14:58:55,622 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 14:58:55,646 INFO L208 MainTranslator]: Completed translation [2020-12-01 14:58:55,647 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:55 WrapperNode [2020-12-01 14:58:55,647 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 14:58:55,648 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 14:58:55,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 14:58:55,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 14:58:55,660 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:55" (1/1) ... [2020-12-01 14:58:55,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:55" (1/1) ... [2020-12-01 14:58:55,742 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 14:58:55,742 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 14:58:55,743 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 14:58:55,743 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 14:58:55,752 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:55" (1/1) ... [2020-12-01 14:58:55,752 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:55" (1/1) ... [2020-12-01 14:58:55,773 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:55" (1/1) ... [2020-12-01 14:58:55,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:55" (1/1) ... [2020-12-01 14:58:55,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:55" (1/1) ... [2020-12-01 14:58:55,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:55" (1/1) ... [2020-12-01 14:58:55,794 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:55" (1/1) ... [2020-12-01 14:58:55,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 14:58:55,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 14:58:55,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 14:58:55,802 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 14:58:55,808 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 14:58:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 14:58:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 14:58:55,889 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 14:58:55,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 14:58:56,090 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-01 14:58:56,789 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-12-01 14:58:56,789 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-12-01 14:58:56,799 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 14:58:56,799 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-01 14:58:56,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:58:56 BoogieIcfgContainer [2020-12-01 14:58:56,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 14:58:56,803 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 14:58:56,803 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 14:58:56,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 14:58:56,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 02:58:55" (1/3) ... [2020-12-01 14:58:56,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfc45b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:58:56, skipping insertion in model container [2020-12-01 14:58:56,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 02:58:55" (2/3) ... [2020-12-01 14:58:56,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cfc45b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 02:58:56, skipping insertion in model container [2020-12-01 14:58:56,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:58:56" (3/3) ... [2020-12-01 14:58:56,810 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_11.cil.c [2020-12-01 14:58:56,823 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 14:58:56,827 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 14:58:56,838 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 14:58:56,860 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 14:58:56,861 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 14:58:56,861 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 14:58:56,861 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 14:58:56,861 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 14:58:56,861 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 14:58:56,862 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 14:58:56,862 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 14:58:56,879 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-12-01 14:58:56,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-01 14:58:56,897 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:58:56,898 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] [2020-12-01 14:58:56,898 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:58:56,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:58:56,903 INFO L82 PathProgramCache]: Analyzing trace with hash -814657320, now seen corresponding path program 1 times [2020-12-01 14:58:56,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:58:56,910 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717973409] [2020-12-01 14:58:56,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:58:57,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:58:57,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:58:57,109 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717973409] [2020-12-01 14:58:57,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:58:57,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:58:57,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209305352] [2020-12-01 14:58:57,115 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:58:57,115 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:58:57,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:58:57,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:58:57,129 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 3 states. [2020-12-01 14:58:57,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:58:57,322 INFO L93 Difference]: Finished difference Result 317 states and 543 transitions. [2020-12-01 14:58:57,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:58:57,324 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-12-01 14:58:57,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:58:57,336 INFO L225 Difference]: With dead ends: 317 [2020-12-01 14:58:57,336 INFO L226 Difference]: Without dead ends: 155 [2020-12-01 14:58:57,340 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 [2020-12-01 14:58:57,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-12-01 14:58:57,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 153. [2020-12-01 14:58:57,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-12-01 14:58:57,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 241 transitions. [2020-12-01 14:58:57,390 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 241 transitions. Word has length 26 [2020-12-01 14:58:57,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:58:57,391 INFO L481 AbstractCegarLoop]: Abstraction has 153 states and 241 transitions. [2020-12-01 14:58:57,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:58:57,391 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 241 transitions. [2020-12-01 14:58:57,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 14:58:57,393 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:58:57,393 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] [2020-12-01 14:58:57,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 14:58:57,394 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:58:57,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:58:57,395 INFO L82 PathProgramCache]: Analyzing trace with hash 327844106, now seen corresponding path program 1 times [2020-12-01 14:58:57,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:58:57,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008267401] [2020-12-01 14:58:57,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:58:57,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:58:57,495 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:58:57,496 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008267401] [2020-12-01 14:58:57,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:58:57,496 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:58:57,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978055695] [2020-12-01 14:58:57,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:58:57,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:58:57,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:58:57,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:58:57,499 INFO L87 Difference]: Start difference. First operand 153 states and 241 transitions. Second operand 3 states. [2020-12-01 14:58:57,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:58:57,631 INFO L93 Difference]: Finished difference Result 319 states and 502 transitions. [2020-12-01 14:58:57,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:58:57,632 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-01 14:58:57,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:58:57,638 INFO L225 Difference]: With dead ends: 319 [2020-12-01 14:58:57,638 INFO L226 Difference]: Without dead ends: 174 [2020-12-01 14:58:57,642 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 [2020-12-01 14:58:57,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-12-01 14:58:57,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-12-01 14:58:57,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-12-01 14:58:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 270 transitions. [2020-12-01 14:58:57,670 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 270 transitions. Word has length 27 [2020-12-01 14:58:57,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:58:57,671 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 270 transitions. [2020-12-01 14:58:57,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:58:57,671 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 270 transitions. [2020-12-01 14:58:57,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 14:58:57,675 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:58:57,675 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] [2020-12-01 14:58:57,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 14:58:57,676 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:58:57,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:58:57,677 INFO L82 PathProgramCache]: Analyzing trace with hash 883966207, now seen corresponding path program 1 times [2020-12-01 14:58:57,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:58:57,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [856568208] [2020-12-01 14:58:57,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:58:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:58:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:58:57,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [856568208] [2020-12-01 14:58:57,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:58:57,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:58:57,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531119126] [2020-12-01 14:58:57,788 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:58:57,788 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:58:57,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:58:57,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:58:57,790 INFO L87 Difference]: Start difference. First operand 174 states and 270 transitions. Second operand 3 states. [2020-12-01 14:58:57,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:58:57,975 INFO L93 Difference]: Finished difference Result 348 states and 542 transitions. [2020-12-01 14:58:57,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:58:57,976 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-01 14:58:57,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:58:57,978 INFO L225 Difference]: With dead ends: 348 [2020-12-01 14:58:57,978 INFO L226 Difference]: Without dead ends: 182 [2020-12-01 14:58:57,979 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 [2020-12-01 14:58:57,980 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-12-01 14:58:57,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2020-12-01 14:58:57,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-12-01 14:58:57,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 281 transitions. [2020-12-01 14:58:57,994 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 281 transitions. Word has length 27 [2020-12-01 14:58:57,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:58:57,994 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 281 transitions. [2020-12-01 14:58:57,994 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:58:57,994 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 281 transitions. [2020-12-01 14:58:57,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-01 14:58:57,995 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:58:57,996 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] [2020-12-01 14:58:57,996 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 14:58:57,996 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:58:57,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:58:57,997 INFO L82 PathProgramCache]: Analyzing trace with hash -1794489921, now seen corresponding path program 1 times [2020-12-01 14:58:57,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:58:57,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [994361718] [2020-12-01 14:58:57,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:58:58,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:58:58,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:58:58,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [994361718] [2020-12-01 14:58:58,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:58:58,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:58:58,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102261288] [2020-12-01 14:58:58,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:58:58,085 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:58:58,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:58:58,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:58:58,086 INFO L87 Difference]: Start difference. First operand 180 states and 281 transitions. Second operand 3 states. [2020-12-01 14:58:58,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:58:58,225 INFO L93 Difference]: Finished difference Result 353 states and 552 transitions. [2020-12-01 14:58:58,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:58:58,225 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-01 14:58:58,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:58:58,227 INFO L225 Difference]: With dead ends: 353 [2020-12-01 14:58:58,228 INFO L226 Difference]: Without dead ends: 181 [2020-12-01 14:58:58,228 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 [2020-12-01 14:58:58,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-12-01 14:58:58,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2020-12-01 14:58:58,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-01 14:58:58,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 282 transitions. [2020-12-01 14:58:58,254 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 282 transitions. Word has length 27 [2020-12-01 14:58:58,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:58:58,255 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 282 transitions. [2020-12-01 14:58:58,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:58:58,255 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 282 transitions. [2020-12-01 14:58:58,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-01 14:58:58,256 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:58:58,256 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] [2020-12-01 14:58:58,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 14:58:58,257 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:58:58,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:58:58,258 INFO L82 PathProgramCache]: Analyzing trace with hash -594155684, now seen corresponding path program 1 times [2020-12-01 14:58:58,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:58:58,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399071886] [2020-12-01 14:58:58,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:58:58,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:58:58,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:58:58,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399071886] [2020-12-01 14:58:58,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:58:58,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:58:58,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311654647] [2020-12-01 14:58:58,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:58:58,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:58:58,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:58:58,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:58:58,341 INFO L87 Difference]: Start difference. First operand 181 states and 282 transitions. Second operand 3 states. [2020-12-01 14:58:58,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:58:58,498 INFO L93 Difference]: Finished difference Result 364 states and 564 transitions. [2020-12-01 14:58:58,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:58:58,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-01 14:58:58,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:58:58,500 INFO L225 Difference]: With dead ends: 364 [2020-12-01 14:58:58,500 INFO L226 Difference]: Without dead ends: 191 [2020-12-01 14:58:58,501 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 [2020-12-01 14:58:58,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-01 14:58:58,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2020-12-01 14:58:58,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-01 14:58:58,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 280 transitions. [2020-12-01 14:58:58,509 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 280 transitions. Word has length 28 [2020-12-01 14:58:58,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:58:58,510 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 280 transitions. [2020-12-01 14:58:58,510 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:58:58,510 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 280 transitions. [2020-12-01 14:58:58,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-12-01 14:58:58,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:58:58,515 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] [2020-12-01 14:58:58,515 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 14:58:58,515 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:58:58,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:58:58,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1519140995, now seen corresponding path program 1 times [2020-12-01 14:58:58,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:58:58,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755811668] [2020-12-01 14:58:58,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:58:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:58:58,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:58:58,585 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755811668] [2020-12-01 14:58:58,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:58:58,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:58:58,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697080749] [2020-12-01 14:58:58,586 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:58:58,586 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:58:58,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:58:58,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:58:58,587 INFO L87 Difference]: Start difference. First operand 181 states and 280 transitions. Second operand 3 states. [2020-12-01 14:58:58,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:58:58,747 INFO L93 Difference]: Finished difference Result 364 states and 560 transitions. [2020-12-01 14:58:58,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:58:58,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-12-01 14:58:58,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:58:58,749 INFO L225 Difference]: With dead ends: 364 [2020-12-01 14:58:58,750 INFO L226 Difference]: Without dead ends: 191 [2020-12-01 14:58:58,750 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 [2020-12-01 14:58:58,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-01 14:58:58,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2020-12-01 14:58:58,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-01 14:58:58,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 278 transitions. [2020-12-01 14:58:58,765 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 278 transitions. Word has length 29 [2020-12-01 14:58:58,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:58:58,765 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 278 transitions. [2020-12-01 14:58:58,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:58:58,766 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 278 transitions. [2020-12-01 14:58:58,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-01 14:58:58,771 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:58:58,771 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] [2020-12-01 14:58:58,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 14:58:58,771 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:58:58,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:58:58,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1615530751, now seen corresponding path program 1 times [2020-12-01 14:58:58,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:58:58,778 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118456621] [2020-12-01 14:58:58,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:58:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:58:58,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:58:58,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118456621] [2020-12-01 14:58:58,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:58:58,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:58:58,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096453341] [2020-12-01 14:58:58,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:58:58,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:58:58,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:58:58,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:58:58,831 INFO L87 Difference]: Start difference. First operand 181 states and 278 transitions. Second operand 3 states. [2020-12-01 14:58:58,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:58:58,996 INFO L93 Difference]: Finished difference Result 364 states and 556 transitions. [2020-12-01 14:58:58,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:58:58,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-12-01 14:58:58,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:58:58,998 INFO L225 Difference]: With dead ends: 364 [2020-12-01 14:58:58,998 INFO L226 Difference]: Without dead ends: 191 [2020-12-01 14:58:58,999 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 [2020-12-01 14:58:59,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 191 states. [2020-12-01 14:58:59,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 191 to 181. [2020-12-01 14:58:59,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-12-01 14:58:59,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 276 transitions. [2020-12-01 14:58:59,008 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 276 transitions. Word has length 30 [2020-12-01 14:58:59,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:58:59,008 INFO L481 AbstractCegarLoop]: Abstraction has 181 states and 276 transitions. [2020-12-01 14:58:59,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:58:59,008 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 276 transitions. [2020-12-01 14:58:59,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-01 14:58:59,009 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:58:59,009 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] [2020-12-01 14:58:59,009 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 14:58:59,010 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:58:59,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:58:59,010 INFO L82 PathProgramCache]: Analyzing trace with hash -1189847454, now seen corresponding path program 1 times [2020-12-01 14:58:59,010 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:58:59,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298765530] [2020-12-01 14:58:59,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:58:59,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:58:59,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:58:59,050 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298765530] [2020-12-01 14:58:59,050 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:58:59,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-01 14:58:59,050 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380240751] [2020-12-01 14:58:59,051 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:58:59,051 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:58:59,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:58:59,052 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-01 14:58:59,052 INFO L87 Difference]: Start difference. First operand 181 states and 276 transitions. Second operand 4 states. [2020-12-01 14:58:59,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:58:59,354 INFO L93 Difference]: Finished difference Result 512 states and 779 transitions. [2020-12-01 14:58:59,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:58:59,354 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-01 14:58:59,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:58:59,357 INFO L225 Difference]: With dead ends: 512 [2020-12-01 14:58:59,357 INFO L226 Difference]: Without dead ends: 339 [2020-12-01 14:58:59,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:58:59,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-12-01 14:58:59,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 324. [2020-12-01 14:58:59,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 324 states. [2020-12-01 14:58:59,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 495 transitions. [2020-12-01 14:58:59,393 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 495 transitions. Word has length 30 [2020-12-01 14:58:59,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:58:59,393 INFO L481 AbstractCegarLoop]: Abstraction has 324 states and 495 transitions. [2020-12-01 14:58:59,393 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:58:59,393 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 495 transitions. [2020-12-01 14:58:59,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-12-01 14:58:59,395 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:58:59,395 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] [2020-12-01 14:58:59,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 14:58:59,396 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:58:59,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:58:59,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1632006041, now seen corresponding path program 1 times [2020-12-01 14:58:59,397 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:58:59,397 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853506701] [2020-12-01 14:58:59,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:58:59,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:58:59,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:58:59,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853506701] [2020-12-01 14:58:59,447 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:58:59,447 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:58:59,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570313097] [2020-12-01 14:58:59,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:58:59,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:58:59,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:58:59,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:58:59,455 INFO L87 Difference]: Start difference. First operand 324 states and 495 transitions. Second operand 3 states. [2020-12-01 14:58:59,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:58:59,667 INFO L93 Difference]: Finished difference Result 699 states and 1075 transitions. [2020-12-01 14:58:59,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:58:59,668 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-12-01 14:58:59,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:58:59,671 INFO L225 Difference]: With dead ends: 699 [2020-12-01 14:58:59,671 INFO L226 Difference]: Without dead ends: 383 [2020-12-01 14:58:59,672 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 [2020-12-01 14:58:59,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 383 states. [2020-12-01 14:58:59,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 383 to 375. [2020-12-01 14:58:59,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 375 states. [2020-12-01 14:58:59,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 582 transitions. [2020-12-01 14:58:59,693 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 582 transitions. Word has length 44 [2020-12-01 14:58:59,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:58:59,694 INFO L481 AbstractCegarLoop]: Abstraction has 375 states and 582 transitions. [2020-12-01 14:58:59,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:58:59,694 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 582 transitions. [2020-12-01 14:58:59,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-01 14:58:59,696 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:58:59,696 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] [2020-12-01 14:58:59,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 14:58:59,697 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:58:59,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:58:59,698 INFO L82 PathProgramCache]: Analyzing trace with hash -954576389, now seen corresponding path program 1 times [2020-12-01 14:58:59,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:58:59,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368507660] [2020-12-01 14:58:59,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:58:59,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:58:59,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:58:59,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368507660] [2020-12-01 14:58:59,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:58:59,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:58:59,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971332126] [2020-12-01 14:58:59,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:58:59,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:58:59,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:58:59,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:58:59,756 INFO L87 Difference]: Start difference. First operand 375 states and 582 transitions. Second operand 3 states. [2020-12-01 14:58:59,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:58:59,999 INFO L93 Difference]: Finished difference Result 776 states and 1211 transitions. [2020-12-01 14:58:59,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:58:59,999 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 45 [2020-12-01 14:59:00,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:00,005 INFO L225 Difference]: With dead ends: 776 [2020-12-01 14:59:00,005 INFO L226 Difference]: Without dead ends: 407 [2020-12-01 14:59:00,006 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 [2020-12-01 14:59:00,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2020-12-01 14:59:00,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 399. [2020-12-01 14:59:00,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 399 states. [2020-12-01 14:59:00,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 399 states to 399 states and 628 transitions. [2020-12-01 14:59:00,025 INFO L78 Accepts]: Start accepts. Automaton has 399 states and 628 transitions. Word has length 45 [2020-12-01 14:59:00,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:00,026 INFO L481 AbstractCegarLoop]: Abstraction has 399 states and 628 transitions. [2020-12-01 14:59:00,026 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:00,026 INFO L276 IsEmpty]: Start isEmpty. Operand 399 states and 628 transitions. [2020-12-01 14:59:00,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-12-01 14:59:00,027 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:00,027 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-01 14:59:00,027 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-01 14:59:00,027 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:00,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:00,028 INFO L82 PathProgramCache]: Analyzing trace with hash 1426018212, now seen corresponding path program 1 times [2020-12-01 14:59:00,028 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:00,028 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844653320] [2020-12-01 14:59:00,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:00,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:00,068 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-12-01 14:59:00,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844653320] [2020-12-01 14:59:00,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:00,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:00,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782733805] [2020-12-01 14:59:00,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:00,070 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:00,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:00,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:00,072 INFO L87 Difference]: Start difference. First operand 399 states and 628 transitions. Second operand 3 states. [2020-12-01 14:59:00,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:00,265 INFO L93 Difference]: Finished difference Result 830 states and 1311 transitions. [2020-12-01 14:59:00,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:00,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-12-01 14:59:00,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:00,269 INFO L225 Difference]: With dead ends: 830 [2020-12-01 14:59:00,269 INFO L226 Difference]: Without dead ends: 439 [2020-12-01 14:59:00,270 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 [2020-12-01 14:59:00,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2020-12-01 14:59:00,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 439. [2020-12-01 14:59:00,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 439 states. [2020-12-01 14:59:00,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 693 transitions. [2020-12-01 14:59:00,296 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 693 transitions. Word has length 55 [2020-12-01 14:59:00,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:00,296 INFO L481 AbstractCegarLoop]: Abstraction has 439 states and 693 transitions. [2020-12-01 14:59:00,296 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:00,297 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 693 transitions. [2020-12-01 14:59:00,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-12-01 14:59:00,298 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:00,298 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-01 14:59:00,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-01 14:59:00,298 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:00,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:00,299 INFO L82 PathProgramCache]: Analyzing trace with hash 961137590, now seen corresponding path program 1 times [2020-12-01 14:59:00,300 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:00,300 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65873057] [2020-12-01 14:59:00,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:00,372 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 14:59:00,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65873057] [2020-12-01 14:59:00,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:00,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:00,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482236011] [2020-12-01 14:59:00,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:00,374 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:00,374 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:00,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:00,374 INFO L87 Difference]: Start difference. First operand 439 states and 693 transitions. Second operand 3 states. [2020-12-01 14:59:00,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:00,573 INFO L93 Difference]: Finished difference Result 912 states and 1441 transitions. [2020-12-01 14:59:00,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:00,573 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 82 [2020-12-01 14:59:00,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:00,578 INFO L225 Difference]: With dead ends: 912 [2020-12-01 14:59:00,578 INFO L226 Difference]: Without dead ends: 481 [2020-12-01 14:59:00,579 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 [2020-12-01 14:59:00,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-12-01 14:59:00,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 477. [2020-12-01 14:59:00,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-12-01 14:59:00,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 753 transitions. [2020-12-01 14:59:00,601 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 753 transitions. Word has length 82 [2020-12-01 14:59:00,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:00,601 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 753 transitions. [2020-12-01 14:59:00,601 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:00,601 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 753 transitions. [2020-12-01 14:59:00,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-12-01 14:59:00,602 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:00,603 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:59:00,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-01 14:59:00,603 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:00,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:00,603 INFO L82 PathProgramCache]: Analyzing trace with hash -986689731, now seen corresponding path program 1 times [2020-12-01 14:59:00,603 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:00,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639791419] [2020-12-01 14:59:00,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:00,653 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 14:59:00,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639791419] [2020-12-01 14:59:00,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:00,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:00,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066676494] [2020-12-01 14:59:00,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:00,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:00,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:00,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:00,656 INFO L87 Difference]: Start difference. First operand 477 states and 753 transitions. Second operand 3 states. [2020-12-01 14:59:00,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:00,848 INFO L93 Difference]: Finished difference Result 950 states and 1498 transitions. [2020-12-01 14:59:00,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:00,849 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 83 [2020-12-01 14:59:00,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:00,852 INFO L225 Difference]: With dead ends: 950 [2020-12-01 14:59:00,852 INFO L226 Difference]: Without dead ends: 481 [2020-12-01 14:59:00,853 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 [2020-12-01 14:59:00,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-12-01 14:59:00,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 477. [2020-12-01 14:59:00,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-12-01 14:59:00,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 750 transitions. [2020-12-01 14:59:00,873 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 750 transitions. Word has length 83 [2020-12-01 14:59:00,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:00,875 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 750 transitions. [2020-12-01 14:59:00,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:00,875 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 750 transitions. [2020-12-01 14:59:00,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-12-01 14:59:00,882 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:00,882 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-12-01 14:59:00,883 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-01 14:59:00,883 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:00,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:00,883 INFO L82 PathProgramCache]: Analyzing trace with hash -1836560986, now seen corresponding path program 1 times [2020-12-01 14:59:00,883 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:00,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285206240] [2020-12-01 14:59:00,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:00,948 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 14:59:00,949 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285206240] [2020-12-01 14:59:00,949 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:00,949 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:00,949 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164820886] [2020-12-01 14:59:00,949 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:00,949 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:00,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:00,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:00,950 INFO L87 Difference]: Start difference. First operand 477 states and 750 transitions. Second operand 3 states. [2020-12-01 14:59:01,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:01,129 INFO L93 Difference]: Finished difference Result 998 states and 1573 transitions. [2020-12-01 14:59:01,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:01,129 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-12-01 14:59:01,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:01,132 INFO L225 Difference]: With dead ends: 998 [2020-12-01 14:59:01,133 INFO L226 Difference]: Without dead ends: 529 [2020-12-01 14:59:01,134 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 [2020-12-01 14:59:01,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-12-01 14:59:01,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 513. [2020-12-01 14:59:01,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-12-01 14:59:01,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 805 transitions. [2020-12-01 14:59:01,163 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 805 transitions. Word has length 84 [2020-12-01 14:59:01,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:01,164 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 805 transitions. [2020-12-01 14:59:01,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:01,164 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 805 transitions. [2020-12-01 14:59:01,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-01 14:59:01,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:01,165 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-01 14:59:01,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-01 14:59:01,166 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:01,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:01,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1112959693, now seen corresponding path program 1 times [2020-12-01 14:59:01,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:01,167 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886134552] [2020-12-01 14:59:01,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:01,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:01,210 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-12-01 14:59:01,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886134552] [2020-12-01 14:59:01,211 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:01,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:01,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682163175] [2020-12-01 14:59:01,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:01,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:01,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:01,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:01,212 INFO L87 Difference]: Start difference. First operand 513 states and 805 transitions. Second operand 3 states. [2020-12-01 14:59:01,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:01,403 INFO L93 Difference]: Finished difference Result 1034 states and 1624 transitions. [2020-12-01 14:59:01,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:01,404 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-01 14:59:01,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:01,407 INFO L225 Difference]: With dead ends: 1034 [2020-12-01 14:59:01,407 INFO L226 Difference]: Without dead ends: 529 [2020-12-01 14:59:01,410 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 [2020-12-01 14:59:01,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2020-12-01 14:59:01,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 513. [2020-12-01 14:59:01,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-12-01 14:59:01,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 801 transitions. [2020-12-01 14:59:01,431 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 801 transitions. Word has length 85 [2020-12-01 14:59:01,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:01,432 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 801 transitions. [2020-12-01 14:59:01,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:01,432 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 801 transitions. [2020-12-01 14:59:01,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-01 14:59:01,433 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:01,433 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, 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] [2020-12-01 14:59:01,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-01 14:59:01,433 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:01,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:01,434 INFO L82 PathProgramCache]: Analyzing trace with hash 167103299, now seen corresponding path program 1 times [2020-12-01 14:59:01,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:01,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043131614] [2020-12-01 14:59:01,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:01,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:59:01,479 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043131614] [2020-12-01 14:59:01,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:01,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:01,481 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863466787] [2020-12-01 14:59:01,482 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:01,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:01,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:01,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:01,482 INFO L87 Difference]: Start difference. First operand 513 states and 801 transitions. Second operand 3 states. [2020-12-01 14:59:01,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:01,690 INFO L93 Difference]: Finished difference Result 1079 states and 1683 transitions. [2020-12-01 14:59:01,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:01,690 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-01 14:59:01,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:01,694 INFO L225 Difference]: With dead ends: 1079 [2020-12-01 14:59:01,694 INFO L226 Difference]: Without dead ends: 574 [2020-12-01 14:59:01,695 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 [2020-12-01 14:59:01,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 574 states. [2020-12-01 14:59:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 574 to 566. [2020-12-01 14:59:01,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 566 states. [2020-12-01 14:59:01,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 882 transitions. [2020-12-01 14:59:01,722 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 882 transitions. Word has length 85 [2020-12-01 14:59:01,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:01,722 INFO L481 AbstractCegarLoop]: Abstraction has 566 states and 882 transitions. [2020-12-01 14:59:01,723 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:01,723 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 882 transitions. [2020-12-01 14:59:01,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-12-01 14:59:01,724 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:01,724 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, 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] [2020-12-01 14:59:01,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-01 14:59:01,725 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:01,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:01,725 INFO L82 PathProgramCache]: Analyzing trace with hash -1767051647, now seen corresponding path program 1 times [2020-12-01 14:59:01,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:01,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486880134] [2020-12-01 14:59:01,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:01,761 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 14:59:01,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486880134] [2020-12-01 14:59:01,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:01,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:01,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195858369] [2020-12-01 14:59:01,762 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:01,762 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:01,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:01,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:01,763 INFO L87 Difference]: Start difference. First operand 566 states and 882 transitions. Second operand 3 states. [2020-12-01 14:59:01,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:01,976 INFO L93 Difference]: Finished difference Result 1132 states and 1762 transitions. [2020-12-01 14:59:01,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:01,977 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 86 [2020-12-01 14:59:01,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:01,980 INFO L225 Difference]: With dead ends: 1132 [2020-12-01 14:59:01,980 INFO L226 Difference]: Without dead ends: 572 [2020-12-01 14:59:01,981 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 [2020-12-01 14:59:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 572 states. [2020-12-01 14:59:02,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 572 to 564. [2020-12-01 14:59:02,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 564 states. [2020-12-01 14:59:02,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 877 transitions. [2020-12-01 14:59:02,009 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 877 transitions. Word has length 86 [2020-12-01 14:59:02,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:02,009 INFO L481 AbstractCegarLoop]: Abstraction has 564 states and 877 transitions. [2020-12-01 14:59:02,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:02,010 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 877 transitions. [2020-12-01 14:59:02,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-01 14:59:02,012 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:02,012 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-12-01 14:59:02,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-01 14:59:02,012 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:02,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:02,013 INFO L82 PathProgramCache]: Analyzing trace with hash -1128064849, now seen corresponding path program 1 times [2020-12-01 14:59:02,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:02,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094118678] [2020-12-01 14:59:02,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:02,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:02,053 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-01 14:59:02,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094118678] [2020-12-01 14:59:02,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:02,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:02,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200646682] [2020-12-01 14:59:02,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:02,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:02,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:02,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:02,055 INFO L87 Difference]: Start difference. First operand 564 states and 877 transitions. Second operand 3 states. [2020-12-01 14:59:02,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:02,215 INFO L93 Difference]: Finished difference Result 1160 states and 1805 transitions. [2020-12-01 14:59:02,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:02,216 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-12-01 14:59:02,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:02,219 INFO L225 Difference]: With dead ends: 1160 [2020-12-01 14:59:02,219 INFO L226 Difference]: Without dead ends: 604 [2020-12-01 14:59:02,220 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 [2020-12-01 14:59:02,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-12-01 14:59:02,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 594. [2020-12-01 14:59:02,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-12-01 14:59:02,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 918 transitions. [2020-12-01 14:59:02,244 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 918 transitions. Word has length 107 [2020-12-01 14:59:02,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:02,245 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 918 transitions. [2020-12-01 14:59:02,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:02,245 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 918 transitions. [2020-12-01 14:59:02,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-12-01 14:59:02,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:02,247 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:59:02,247 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-01 14:59:02,247 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:02,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:02,248 INFO L82 PathProgramCache]: Analyzing trace with hash 56241544, now seen corresponding path program 1 times [2020-12-01 14:59:02,248 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:02,248 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030515350] [2020-12-01 14:59:02,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:02,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:02,281 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-01 14:59:02,281 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030515350] [2020-12-01 14:59:02,281 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:02,282 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:02,282 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769108361] [2020-12-01 14:59:02,282 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:02,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:02,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:02,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:02,283 INFO L87 Difference]: Start difference. First operand 594 states and 918 transitions. Second operand 3 states. [2020-12-01 14:59:02,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:02,466 INFO L93 Difference]: Finished difference Result 1190 states and 1840 transitions. [2020-12-01 14:59:02,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:02,467 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 108 [2020-12-01 14:59:02,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:02,470 INFO L225 Difference]: With dead ends: 1190 [2020-12-01 14:59:02,470 INFO L226 Difference]: Without dead ends: 604 [2020-12-01 14:59:02,473 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 [2020-12-01 14:59:02,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2020-12-01 14:59:02,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 594. [2020-12-01 14:59:02,495 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 594 states. [2020-12-01 14:59:02,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 594 states to 594 states and 912 transitions. [2020-12-01 14:59:02,497 INFO L78 Accepts]: Start accepts. Automaton has 594 states and 912 transitions. Word has length 108 [2020-12-01 14:59:02,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:02,497 INFO L481 AbstractCegarLoop]: Abstraction has 594 states and 912 transitions. [2020-12-01 14:59:02,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:02,498 INFO L276 IsEmpty]: Start isEmpty. Operand 594 states and 912 transitions. [2020-12-01 14:59:02,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-12-01 14:59:02,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:02,500 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:59:02,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-01 14:59:02,500 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:02,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:02,501 INFO L82 PathProgramCache]: Analyzing trace with hash -296831400, now seen corresponding path program 1 times [2020-12-01 14:59:02,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:02,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778640811] [2020-12-01 14:59:02,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:02,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:02,562 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-12-01 14:59:02,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778640811] [2020-12-01 14:59:02,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:02,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:02,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118759363] [2020-12-01 14:59:02,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:02,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:02,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:02,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:02,565 INFO L87 Difference]: Start difference. First operand 594 states and 912 transitions. Second operand 3 states. [2020-12-01 14:59:02,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:02,734 INFO L93 Difference]: Finished difference Result 1240 states and 1907 transitions. [2020-12-01 14:59:02,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:02,735 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 111 [2020-12-01 14:59:02,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:02,738 INFO L225 Difference]: With dead ends: 1240 [2020-12-01 14:59:02,739 INFO L226 Difference]: Without dead ends: 654 [2020-12-01 14:59:02,740 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 [2020-12-01 14:59:02,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2020-12-01 14:59:02,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 628. [2020-12-01 14:59:02,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-12-01 14:59:02,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 959 transitions. [2020-12-01 14:59:02,775 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 959 transitions. Word has length 111 [2020-12-01 14:59:02,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:02,776 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 959 transitions. [2020-12-01 14:59:02,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:02,776 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 959 transitions. [2020-12-01 14:59:02,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-12-01 14:59:02,778 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:02,778 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-01 14:59:02,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-01 14:59:02,778 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:02,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:02,779 INFO L82 PathProgramCache]: Analyzing trace with hash -1499138703, now seen corresponding path program 1 times [2020-12-01 14:59:02,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:02,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801562595] [2020-12-01 14:59:02,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:02,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:02,825 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-12-01 14:59:02,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801562595] [2020-12-01 14:59:02,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:02,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:02,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453780466] [2020-12-01 14:59:02,826 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:02,827 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:02,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:02,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:02,827 INFO L87 Difference]: Start difference. First operand 628 states and 959 transitions. Second operand 3 states. [2020-12-01 14:59:02,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:02,996 INFO L93 Difference]: Finished difference Result 1274 states and 1948 transitions. [2020-12-01 14:59:02,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:02,997 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2020-12-01 14:59:02,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:03,000 INFO L225 Difference]: With dead ends: 1274 [2020-12-01 14:59:03,001 INFO L226 Difference]: Without dead ends: 654 [2020-12-01 14:59:03,002 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 [2020-12-01 14:59:03,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2020-12-01 14:59:03,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 628. [2020-12-01 14:59:03,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 628 states. [2020-12-01 14:59:03,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 953 transitions. [2020-12-01 14:59:03,027 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 953 transitions. Word has length 112 [2020-12-01 14:59:03,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:03,027 INFO L481 AbstractCegarLoop]: Abstraction has 628 states and 953 transitions. [2020-12-01 14:59:03,027 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:03,028 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 953 transitions. [2020-12-01 14:59:03,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-12-01 14:59:03,029 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:03,029 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-12-01 14:59:03,030 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-01 14:59:03,030 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:03,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:03,030 INFO L82 PathProgramCache]: Analyzing trace with hash 657079250, now seen corresponding path program 1 times [2020-12-01 14:59:03,031 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:03,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957265093] [2020-12-01 14:59:03,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:03,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-01 14:59:03,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957265093] [2020-12-01 14:59:03,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:03,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:03,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684694589] [2020-12-01 14:59:03,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:03,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:03,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:03,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:03,094 INFO L87 Difference]: Start difference. First operand 628 states and 953 transitions. Second operand 3 states. [2020-12-01 14:59:03,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:03,280 INFO L93 Difference]: Finished difference Result 1301 states and 1973 transitions. [2020-12-01 14:59:03,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:03,281 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2020-12-01 14:59:03,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:03,285 INFO L225 Difference]: With dead ends: 1301 [2020-12-01 14:59:03,285 INFO L226 Difference]: Without dead ends: 681 [2020-12-01 14:59:03,287 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 [2020-12-01 14:59:03,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 681 states. [2020-12-01 14:59:03,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 681 to 675. [2020-12-01 14:59:03,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 675 states. [2020-12-01 14:59:03,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1021 transitions. [2020-12-01 14:59:03,314 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1021 transitions. Word has length 123 [2020-12-01 14:59:03,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:03,315 INFO L481 AbstractCegarLoop]: Abstraction has 675 states and 1021 transitions. [2020-12-01 14:59:03,315 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:03,315 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1021 transitions. [2020-12-01 14:59:03,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-12-01 14:59:03,317 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:03,317 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:59:03,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-01 14:59:03,318 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:03,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:03,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1371731480, now seen corresponding path program 1 times [2020-12-01 14:59:03,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:03,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503834709] [2020-12-01 14:59:03,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:03,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:03,375 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-12-01 14:59:03,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503834709] [2020-12-01 14:59:03,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:03,376 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:03,378 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173810245] [2020-12-01 14:59:03,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:03,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:03,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:03,381 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:03,381 INFO L87 Difference]: Start difference. First operand 675 states and 1021 transitions. Second operand 3 states. [2020-12-01 14:59:03,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:03,459 INFO L93 Difference]: Finished difference Result 1344 states and 2031 transitions. [2020-12-01 14:59:03,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:03,460 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 124 [2020-12-01 14:59:03,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:03,467 INFO L225 Difference]: With dead ends: 1344 [2020-12-01 14:59:03,467 INFO L226 Difference]: Without dead ends: 1342 [2020-12-01 14:59:03,468 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 [2020-12-01 14:59:03,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2020-12-01 14:59:03,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1340. [2020-12-01 14:59:03,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1340 states. [2020-12-01 14:59:03,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1340 states to 1340 states and 2027 transitions. [2020-12-01 14:59:03,533 INFO L78 Accepts]: Start accepts. Automaton has 1340 states and 2027 transitions. Word has length 124 [2020-12-01 14:59:03,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:03,534 INFO L481 AbstractCegarLoop]: Abstraction has 1340 states and 2027 transitions. [2020-12-01 14:59:03,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:03,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1340 states and 2027 transitions. [2020-12-01 14:59:03,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-12-01 14:59:03,537 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:03,537 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:59:03,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-12-01 14:59:03,537 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:03,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:03,539 INFO L82 PathProgramCache]: Analyzing trace with hash -1920674126, now seen corresponding path program 1 times [2020-12-01 14:59:03,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:03,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658480218] [2020-12-01 14:59:03,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:03,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:03,589 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-12-01 14:59:03,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658480218] [2020-12-01 14:59:03,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:03,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:03,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681811659] [2020-12-01 14:59:03,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:03,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:03,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:03,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:03,593 INFO L87 Difference]: Start difference. First operand 1340 states and 2027 transitions. Second operand 3 states. [2020-12-01 14:59:03,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:03,674 INFO L93 Difference]: Finished difference Result 3329 states and 5035 transitions. [2020-12-01 14:59:03,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:03,674 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-12-01 14:59:03,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:03,685 INFO L225 Difference]: With dead ends: 3329 [2020-12-01 14:59:03,685 INFO L226 Difference]: Without dead ends: 1997 [2020-12-01 14:59:03,687 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 [2020-12-01 14:59:03,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1997 states. [2020-12-01 14:59:03,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1997 to 1995. [2020-12-01 14:59:03,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1995 states. [2020-12-01 14:59:03,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1995 states to 1995 states and 3013 transitions. [2020-12-01 14:59:03,788 INFO L78 Accepts]: Start accepts. Automaton has 1995 states and 3013 transitions. Word has length 125 [2020-12-01 14:59:03,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:03,788 INFO L481 AbstractCegarLoop]: Abstraction has 1995 states and 3013 transitions. [2020-12-01 14:59:03,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:03,789 INFO L276 IsEmpty]: Start isEmpty. Operand 1995 states and 3013 transitions. [2020-12-01 14:59:03,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-12-01 14:59:03,792 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:03,792 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:59:03,792 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-12-01 14:59:03,792 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:03,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:03,793 INFO L82 PathProgramCache]: Analyzing trace with hash 232432692, now seen corresponding path program 1 times [2020-12-01 14:59:03,793 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:03,793 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023943666] [2020-12-01 14:59:03,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:03,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:03,830 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2020-12-01 14:59:03,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023943666] [2020-12-01 14:59:03,831 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:03,831 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:03,831 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824501426] [2020-12-01 14:59:03,831 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:03,832 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:03,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:03,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:03,832 INFO L87 Difference]: Start difference. First operand 1995 states and 3013 transitions. Second operand 3 states. [2020-12-01 14:59:03,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:03,933 INFO L93 Difference]: Finished difference Result 4617 states and 6972 transitions. [2020-12-01 14:59:03,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:03,933 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-12-01 14:59:03,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:03,947 INFO L225 Difference]: With dead ends: 4617 [2020-12-01 14:59:03,948 INFO L226 Difference]: Without dead ends: 2630 [2020-12-01 14:59:03,951 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 [2020-12-01 14:59:03,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2630 states. [2020-12-01 14:59:04,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2630 to 2628. [2020-12-01 14:59:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2628 states. [2020-12-01 14:59:04,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2628 states to 2628 states and 3962 transitions. [2020-12-01 14:59:04,063 INFO L78 Accepts]: Start accepts. Automaton has 2628 states and 3962 transitions. Word has length 125 [2020-12-01 14:59:04,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:04,077 INFO L481 AbstractCegarLoop]: Abstraction has 2628 states and 3962 transitions. [2020-12-01 14:59:04,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:04,077 INFO L276 IsEmpty]: Start isEmpty. Operand 2628 states and 3962 transitions. [2020-12-01 14:59:04,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-12-01 14:59:04,081 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:04,082 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:59:04,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-12-01 14:59:04,082 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:04,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:04,083 INFO L82 PathProgramCache]: Analyzing trace with hash 357624272, now seen corresponding path program 1 times [2020-12-01 14:59:04,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:04,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025155222] [2020-12-01 14:59:04,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:04,131 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-12-01 14:59:04,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025155222] [2020-12-01 14:59:04,131 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:04,132 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:04,132 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409088760] [2020-12-01 14:59:04,132 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:04,133 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:04,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:04,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:04,134 INFO L87 Difference]: Start difference. First operand 2628 states and 3962 transitions. Second operand 3 states. [2020-12-01 14:59:04,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:04,376 INFO L93 Difference]: Finished difference Result 5376 states and 8099 transitions. [2020-12-01 14:59:04,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:04,377 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-12-01 14:59:04,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:04,392 INFO L225 Difference]: With dead ends: 5376 [2020-12-01 14:59:04,392 INFO L226 Difference]: Without dead ends: 2756 [2020-12-01 14:59:04,396 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 [2020-12-01 14:59:04,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2020-12-01 14:59:04,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2724. [2020-12-01 14:59:04,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2724 states. [2020-12-01 14:59:04,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 4077 transitions. [2020-12-01 14:59:04,541 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 4077 transitions. Word has length 133 [2020-12-01 14:59:04,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:04,541 INFO L481 AbstractCegarLoop]: Abstraction has 2724 states and 4077 transitions. [2020-12-01 14:59:04,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:04,541 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 4077 transitions. [2020-12-01 14:59:04,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-12-01 14:59:04,546 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:04,546 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:59:04,546 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-12-01 14:59:04,546 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:04,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:04,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1875401929, now seen corresponding path program 1 times [2020-12-01 14:59:04,547 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:04,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486969030] [2020-12-01 14:59:04,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:04,589 INFO L134 CoverageAnalysis]: Checked inductivity of 165 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2020-12-01 14:59:04,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486969030] [2020-12-01 14:59:04,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:04,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:04,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79392247] [2020-12-01 14:59:04,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:04,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:04,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:04,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:04,591 INFO L87 Difference]: Start difference. First operand 2724 states and 4077 transitions. Second operand 3 states. [2020-12-01 14:59:04,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:04,858 INFO L93 Difference]: Finished difference Result 5472 states and 8182 transitions. [2020-12-01 14:59:04,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:04,859 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-12-01 14:59:04,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:04,874 INFO L225 Difference]: With dead ends: 5472 [2020-12-01 14:59:04,874 INFO L226 Difference]: Without dead ends: 2756 [2020-12-01 14:59:04,878 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 [2020-12-01 14:59:04,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2756 states. [2020-12-01 14:59:05,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2756 to 2724. [2020-12-01 14:59:05,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2724 states. [2020-12-01 14:59:05,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 4045 transitions. [2020-12-01 14:59:05,019 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 4045 transitions. Word has length 134 [2020-12-01 14:59:05,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:05,020 INFO L481 AbstractCegarLoop]: Abstraction has 2724 states and 4045 transitions. [2020-12-01 14:59:05,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:05,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 4045 transitions. [2020-12-01 14:59:05,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-12-01 14:59:05,025 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:05,025 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 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, 1, 1] [2020-12-01 14:59:05,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-12-01 14:59:05,026 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:05,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:05,026 INFO L82 PathProgramCache]: Analyzing trace with hash 214407641, now seen corresponding path program 1 times [2020-12-01 14:59:05,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:05,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859079742] [2020-12-01 14:59:05,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:05,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:05,091 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-12-01 14:59:05,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859079742] [2020-12-01 14:59:05,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:05,092 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:05,092 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637305061] [2020-12-01 14:59:05,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:05,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:05,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:05,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:05,094 INFO L87 Difference]: Start difference. First operand 2724 states and 4045 transitions. Second operand 3 states. [2020-12-01 14:59:05,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:05,372 INFO L93 Difference]: Finished difference Result 5522 states and 8175 transitions. [2020-12-01 14:59:05,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:05,373 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2020-12-01 14:59:05,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:05,388 INFO L225 Difference]: With dead ends: 5522 [2020-12-01 14:59:05,388 INFO L226 Difference]: Without dead ends: 2806 [2020-12-01 14:59:05,392 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 [2020-12-01 14:59:05,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2806 states. [2020-12-01 14:59:05,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2806 to 2724. [2020-12-01 14:59:05,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2724 states. [2020-12-01 14:59:05,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2724 states to 2724 states and 3957 transitions. [2020-12-01 14:59:05,515 INFO L78 Accepts]: Start accepts. Automaton has 2724 states and 3957 transitions. Word has length 164 [2020-12-01 14:59:05,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:05,515 INFO L481 AbstractCegarLoop]: Abstraction has 2724 states and 3957 transitions. [2020-12-01 14:59:05,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:05,516 INFO L276 IsEmpty]: Start isEmpty. Operand 2724 states and 3957 transitions. [2020-12-01 14:59:05,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-12-01 14:59:05,520 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:05,520 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 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, 1, 1, 1, 1] [2020-12-01 14:59:05,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-12-01 14:59:05,520 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:05,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:05,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1161445527, now seen corresponding path program 1 times [2020-12-01 14:59:05,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:05,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144473542] [2020-12-01 14:59:05,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:05,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:05,569 INFO L134 CoverageAnalysis]: Checked inductivity of 240 backedges. 159 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-12-01 14:59:05,569 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144473542] [2020-12-01 14:59:05,570 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 14:59:05,570 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 14:59:05,570 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117503264] [2020-12-01 14:59:05,570 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:05,571 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:05,571 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:05,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 14:59:05,571 INFO L87 Difference]: Start difference. First operand 2724 states and 3957 transitions. Second operand 3 states. [2020-12-01 14:59:05,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:05,841 INFO L93 Difference]: Finished difference Result 5712 states and 8274 transitions. [2020-12-01 14:59:05,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:05,842 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 164 [2020-12-01 14:59:05,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:05,865 INFO L225 Difference]: With dead ends: 5712 [2020-12-01 14:59:05,873 INFO L226 Difference]: Without dead ends: 2996 [2020-12-01 14:59:05,876 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 [2020-12-01 14:59:05,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2020-12-01 14:59:06,002 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2840. [2020-12-01 14:59:06,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2840 states. [2020-12-01 14:59:06,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2840 states to 2840 states and 4045 transitions. [2020-12-01 14:59:06,008 INFO L78 Accepts]: Start accepts. Automaton has 2840 states and 4045 transitions. Word has length 164 [2020-12-01 14:59:06,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:06,008 INFO L481 AbstractCegarLoop]: Abstraction has 2840 states and 4045 transitions. [2020-12-01 14:59:06,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:06,008 INFO L276 IsEmpty]: Start isEmpty. Operand 2840 states and 4045 transitions. [2020-12-01 14:59:06,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-12-01 14:59:06,013 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:06,013 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:59:06,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-12-01 14:59:06,014 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:06,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:06,014 INFO L82 PathProgramCache]: Analyzing trace with hash -2016709837, now seen corresponding path program 1 times [2020-12-01 14:59:06,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:06,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886498423] [2020-12-01 14:59:06,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:06,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:06,081 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 155 proven. 11 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-12-01 14:59:06,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886498423] [2020-12-01 14:59:06,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [920394048] [2020-12-01 14:59:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:59:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:06,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 14:59:06,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:59:06,610 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2020-12-01 14:59:06,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-01 14:59:06,613 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-01 14:59:06,613 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303951966] [2020-12-01 14:59:06,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:06,614 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:06,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:06,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:59:06,614 INFO L87 Difference]: Start difference. First operand 2840 states and 4045 transitions. Second operand 3 states. [2020-12-01 14:59:06,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:06,798 INFO L93 Difference]: Finished difference Result 8485 states and 12072 transitions. [2020-12-01 14:59:06,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:06,799 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2020-12-01 14:59:06,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:06,811 INFO L225 Difference]: With dead ends: 8485 [2020-12-01 14:59:06,811 INFO L226 Difference]: Without dead ends: 5653 [2020-12-01 14:59:06,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 172 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:59:06,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5653 states. [2020-12-01 14:59:07,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5653 to 5651. [2020-12-01 14:59:07,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5651 states. [2020-12-01 14:59:07,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5651 states to 5651 states and 8034 transitions. [2020-12-01 14:59:07,112 INFO L78 Accepts]: Start accepts. Automaton has 5651 states and 8034 transitions. Word has length 172 [2020-12-01 14:59:07,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:07,113 INFO L481 AbstractCegarLoop]: Abstraction has 5651 states and 8034 transitions. [2020-12-01 14:59:07,113 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:07,113 INFO L276 IsEmpty]: Start isEmpty. Operand 5651 states and 8034 transitions. [2020-12-01 14:59:07,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-12-01 14:59:07,121 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:07,121 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:59:07,349 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:59:07,349 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:07,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:07,349 INFO L82 PathProgramCache]: Analyzing trace with hash 594356241, now seen corresponding path program 1 times [2020-12-01 14:59:07,350 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:07,350 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885531251] [2020-12-01 14:59:07,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:07,455 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 155 proven. 11 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-12-01 14:59:07,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885531251] [2020-12-01 14:59:07,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183539854] [2020-12-01 14:59:07,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:59:07,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:07,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 14:59:07,611 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:59:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 320 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2020-12-01 14:59:07,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-01 14:59:07,823 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-01 14:59:07,823 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972599562] [2020-12-01 14:59:07,824 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:07,824 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:07,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:07,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:59:07,825 INFO L87 Difference]: Start difference. First operand 5651 states and 8034 transitions. Second operand 3 states. [2020-12-01 14:59:08,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:08,262 INFO L93 Difference]: Finished difference Result 11837 states and 16799 transitions. [2020-12-01 14:59:08,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:08,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 173 [2020-12-01 14:59:08,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:08,274 INFO L225 Difference]: With dead ends: 11837 [2020-12-01 14:59:08,274 INFO L226 Difference]: Without dead ends: 5995 [2020-12-01 14:59:08,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:59:08,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5995 states. [2020-12-01 14:59:08,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5995 to 5835. [2020-12-01 14:59:08,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5835 states. [2020-12-01 14:59:08,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5835 states to 5835 states and 8266 transitions. [2020-12-01 14:59:08,505 INFO L78 Accepts]: Start accepts. Automaton has 5835 states and 8266 transitions. Word has length 173 [2020-12-01 14:59:08,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:08,506 INFO L481 AbstractCegarLoop]: Abstraction has 5835 states and 8266 transitions. [2020-12-01 14:59:08,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:08,506 INFO L276 IsEmpty]: Start isEmpty. Operand 5835 states and 8266 transitions. [2020-12-01 14:59:08,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-12-01 14:59:08,515 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:08,515 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-01 14:59:08,729 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:59:08,729 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:08,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:08,730 INFO L82 PathProgramCache]: Analyzing trace with hash 1057591537, now seen corresponding path program 1 times [2020-12-01 14:59:08,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:08,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898390653] [2020-12-01 14:59:08,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:08,845 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 130 proven. 6 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-12-01 14:59:08,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898390653] [2020-12-01 14:59:08,846 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39594647] [2020-12-01 14:59:08,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:59:08,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:08,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 14:59:08,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:59:09,146 INFO L134 CoverageAnalysis]: Checked inductivity of 290 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 278 trivial. 0 not checked. [2020-12-01 14:59:09,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-01 14:59:09,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-01 14:59:09,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496811669] [2020-12-01 14:59:09,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:09,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:09,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:09,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:59:09,148 INFO L87 Difference]: Start difference. First operand 5835 states and 8266 transitions. Second operand 3 states. [2020-12-01 14:59:09,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:09,500 INFO L93 Difference]: Finished difference Result 10594 states and 14958 transitions. [2020-12-01 14:59:09,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:09,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 174 [2020-12-01 14:59:09,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:09,511 INFO L225 Difference]: With dead ends: 10594 [2020-12-01 14:59:09,511 INFO L226 Difference]: Without dead ends: 4616 [2020-12-01 14:59:09,520 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 174 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:59:09,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4616 states. [2020-12-01 14:59:09,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4616 to 4472. [2020-12-01 14:59:09,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4472 states. [2020-12-01 14:59:09,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6325 transitions. [2020-12-01 14:59:09,716 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6325 transitions. Word has length 174 [2020-12-01 14:59:09,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:09,717 INFO L481 AbstractCegarLoop]: Abstraction has 4472 states and 6325 transitions. [2020-12-01 14:59:09,717 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:09,717 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6325 transitions. [2020-12-01 14:59:09,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-12-01 14:59:09,723 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:09,724 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 3, 3, 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] [2020-12-01 14:59:09,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:59:09,949 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:09,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:09,949 INFO L82 PathProgramCache]: Analyzing trace with hash 1886384411, now seen corresponding path program 1 times [2020-12-01 14:59:09,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:09,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2082997443] [2020-12-01 14:59:09,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:09,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:10,038 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 151 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-12-01 14:59:10,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2082997443] [2020-12-01 14:59:10,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [368026584] [2020-12-01 14:59:10,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:59:10,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:10,162 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 14:59:10,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:59:10,404 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 152 proven. 0 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-12-01 14:59:10,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-01 14:59:10,404 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2020-12-01 14:59:10,404 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95348584] [2020-12-01 14:59:10,405 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:10,405 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:10,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:10,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 14:59:10,406 INFO L87 Difference]: Start difference. First operand 4472 states and 6325 transitions. Second operand 3 states. [2020-12-01 14:59:10,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:10,622 INFO L93 Difference]: Finished difference Result 8871 states and 12552 transitions. [2020-12-01 14:59:10,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:10,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-12-01 14:59:10,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:10,632 INFO L225 Difference]: With dead ends: 8871 [2020-12-01 14:59:10,632 INFO L226 Difference]: Without dead ends: 4474 [2020-12-01 14:59:10,638 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 14:59:10,643 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4474 states. [2020-12-01 14:59:10,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4474 to 4472. [2020-12-01 14:59:10,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4472 states. [2020-12-01 14:59:10,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4472 states to 4472 states and 6309 transitions. [2020-12-01 14:59:10,859 INFO L78 Accepts]: Start accepts. Automaton has 4472 states and 6309 transitions. Word has length 177 [2020-12-01 14:59:10,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:10,860 INFO L481 AbstractCegarLoop]: Abstraction has 4472 states and 6309 transitions. [2020-12-01 14:59:10,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:10,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4472 states and 6309 transitions. [2020-12-01 14:59:10,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2020-12-01 14:59:10,867 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:10,867 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 4, 4, 3, 3, 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] [2020-12-01 14:59:11,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:59:11,082 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:11,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:11,082 INFO L82 PathProgramCache]: Analyzing trace with hash 2144549849, now seen corresponding path program 1 times [2020-12-01 14:59:11,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:11,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005409262] [2020-12-01 14:59:11,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:11,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:11,210 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 151 proven. 78 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2020-12-01 14:59:11,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005409262] [2020-12-01 14:59:11,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530453856] [2020-12-01 14:59:11,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:59:11,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:11,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 14:59:11,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:59:11,474 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 329 trivial. 0 not checked. [2020-12-01 14:59:11,475 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-01 14:59:11,475 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2020-12-01 14:59:11,475 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964450650] [2020-12-01 14:59:11,476 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:11,476 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:11,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:11,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 14:59:11,477 INFO L87 Difference]: Start difference. First operand 4472 states and 6309 transitions. Second operand 3 states. [2020-12-01 14:59:11,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:11,777 INFO L93 Difference]: Finished difference Result 7804 states and 10978 transitions. [2020-12-01 14:59:11,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:11,777 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 177 [2020-12-01 14:59:11,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:11,785 INFO L225 Difference]: With dead ends: 7804 [2020-12-01 14:59:11,785 INFO L226 Difference]: Without dead ends: 3299 [2020-12-01 14:59:11,790 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 178 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-01 14:59:11,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3299 states. [2020-12-01 14:59:11,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3299 to 3179. [2020-12-01 14:59:11,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-12-01 14:59:11,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4468 transitions. [2020-12-01 14:59:11,954 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4468 transitions. Word has length 177 [2020-12-01 14:59:11,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:11,954 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 4468 transitions. [2020-12-01 14:59:11,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:11,955 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4468 transitions. [2020-12-01 14:59:11,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-12-01 14:59:11,960 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:11,960 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 3, 3, 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] [2020-12-01 14:59:12,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2020-12-01 14:59:12,177 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:12,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:12,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1199573560, now seen corresponding path program 2 times [2020-12-01 14:59:12,177 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:12,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79843701] [2020-12-01 14:59:12,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:12,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:12,252 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 191 proven. 19 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-12-01 14:59:12,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79843701] [2020-12-01 14:59:12,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873088074] [2020-12-01 14:59:12,253 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:59:12,335 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-12-01 14:59:12,335 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 14:59:12,336 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 14:59:12,338 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:59:12,496 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 352 trivial. 0 not checked. [2020-12-01 14:59:12,496 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-01 14:59:12,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-01 14:59:12,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368998571] [2020-12-01 14:59:12,497 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:12,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:12,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:12,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:59:12,498 INFO L87 Difference]: Start difference. First operand 3179 states and 4468 transitions. Second operand 3 states. [2020-12-01 14:59:12,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:12,786 INFO L93 Difference]: Finished difference Result 6415 states and 9031 transitions. [2020-12-01 14:59:12,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:12,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 182 [2020-12-01 14:59:12,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:12,794 INFO L225 Difference]: With dead ends: 6415 [2020-12-01 14:59:12,795 INFO L226 Difference]: Without dead ends: 3363 [2020-12-01 14:59:12,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 182 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:59:12,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3363 states. [2020-12-01 14:59:12,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3363 to 3179. [2020-12-01 14:59:12,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-12-01 14:59:12,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4452 transitions. [2020-12-01 14:59:12,918 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4452 transitions. Word has length 182 [2020-12-01 14:59:12,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:12,918 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 4452 transitions. [2020-12-01 14:59:12,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:12,919 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4452 transitions. [2020-12-01 14:59:12,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 185 [2020-12-01 14:59:12,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:12,924 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2020-12-01 14:59:13,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:59:13,146 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:13,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:13,146 INFO L82 PathProgramCache]: Analyzing trace with hash -97142242, now seen corresponding path program 1 times [2020-12-01 14:59:13,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:13,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1100205390] [2020-12-01 14:59:13,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:13,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 195 proven. 23 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-12-01 14:59:13,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1100205390] [2020-12-01 14:59:13,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385003610] [2020-12-01 14:59:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:59:13,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:13,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-01 14:59:13,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:59:13,513 INFO L134 CoverageAnalysis]: Checked inductivity of 372 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 360 trivial. 0 not checked. [2020-12-01 14:59:13,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-01 14:59:13,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2020-12-01 14:59:13,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079255778] [2020-12-01 14:59:13,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 14:59:13,514 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:13,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 14:59:13,515 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:59:13,515 INFO L87 Difference]: Start difference. First operand 3179 states and 4452 transitions. Second operand 3 states. [2020-12-01 14:59:13,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:13,786 INFO L93 Difference]: Finished difference Result 6311 states and 8831 transitions. [2020-12-01 14:59:13,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 14:59:13,787 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 184 [2020-12-01 14:59:13,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:13,795 INFO L225 Difference]: With dead ends: 6311 [2020-12-01 14:59:13,796 INFO L226 Difference]: Without dead ends: 3275 [2020-12-01 14:59:13,799 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 184 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-01 14:59:13,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3275 states. [2020-12-01 14:59:13,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3275 to 3179. [2020-12-01 14:59:13,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3179 states. [2020-12-01 14:59:13,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 4436 transitions. [2020-12-01 14:59:13,920 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 4436 transitions. Word has length 184 [2020-12-01 14:59:13,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:13,920 INFO L481 AbstractCegarLoop]: Abstraction has 3179 states and 4436 transitions. [2020-12-01 14:59:13,920 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 14:59:13,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 4436 transitions. [2020-12-01 14:59:13,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-12-01 14:59:13,924 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:13,924 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2020-12-01 14:59:14,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2020-12-01 14:59:14,141 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:14,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:14,141 INFO L82 PathProgramCache]: Analyzing trace with hash -301230506, now seen corresponding path program 3 times [2020-12-01 14:59:14,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:14,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1359391282] [2020-12-01 14:59:14,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:14,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 14:59:14,222 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 196 proven. 27 refuted. 0 times theorem prover too weak. 154 trivial. 0 not checked. [2020-12-01 14:59:14,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1359391282] [2020-12-01 14:59:14,223 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [495824579] [2020-12-01 14:59:14,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-12-01 14:59:14,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2020-12-01 14:59:14,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-12-01 14:59:14,308 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 3 conjunts are in the unsatisfiable core [2020-12-01 14:59:14,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-01 14:59:14,517 INFO L134 CoverageAnalysis]: Checked inductivity of 377 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 272 trivial. 0 not checked. [2020-12-01 14:59:14,518 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-12-01 14:59:14,518 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2020-12-01 14:59:14,518 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679621994] [2020-12-01 14:59:14,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-01 14:59:14,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 14:59:14,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-01 14:59:14,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-01 14:59:14,522 INFO L87 Difference]: Start difference. First operand 3179 states and 4436 transitions. Second operand 4 states. [2020-12-01 14:59:14,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 14:59:14,905 INFO L93 Difference]: Finished difference Result 6549 states and 9060 transitions. [2020-12-01 14:59:14,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-01 14:59:14,906 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 189 [2020-12-01 14:59:14,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 14:59:14,913 INFO L225 Difference]: With dead ends: 6549 [2020-12-01 14:59:14,913 INFO L226 Difference]: Without dead ends: 3561 [2020-12-01 14:59:14,916 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 194 GetRequests, 189 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-12-01 14:59:14,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3561 states. [2020-12-01 14:59:15,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3561 to 3171. [2020-12-01 14:59:15,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3171 states. [2020-12-01 14:59:15,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3171 states to 3171 states and 4420 transitions. [2020-12-01 14:59:15,052 INFO L78 Accepts]: Start accepts. Automaton has 3171 states and 4420 transitions. Word has length 189 [2020-12-01 14:59:15,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 14:59:15,052 INFO L481 AbstractCegarLoop]: Abstraction has 3171 states and 4420 transitions. [2020-12-01 14:59:15,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-01 14:59:15,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3171 states and 4420 transitions. [2020-12-01 14:59:15,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-12-01 14:59:15,059 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 14:59:15,060 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 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] [2020-12-01 14:59:15,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2020-12-01 14:59:15,285 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 14:59:15,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 14:59:15,285 INFO L82 PathProgramCache]: Analyzing trace with hash -2051917229, now seen corresponding path program 1 times [2020-12-01 14:59:15,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 14:59:15,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045095724] [2020-12-01 14:59:15,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 14:59:15,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:59:15,350 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:59:15,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 14:59:15,396 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 14:59:15,504 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 14:59:15,504 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 14:59:15,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-12-01 14:59:15,676 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 02:59:15 BoogieIcfgContainer [2020-12-01 14:59:15,676 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 14:59:15,677 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 14:59:15,677 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 14:59:15,677 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 14:59:15,678 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 02:58:56" (3/4) ... [2020-12-01 14:59:15,680 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 14:59:15,839 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_6bce5df3-fe11-4086-aca8-efeb4d200801/bin/uautomizer/witness.graphml [2020-12-01 14:59:15,839 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 14:59:15,841 INFO L168 Benchmark]: Toolchain (without parser) took 20585.73 ms. Allocated memory was 98.6 MB in the beginning and 742.4 MB in the end (delta: 643.8 MB). Free memory was 70.9 MB in the beginning and 531.8 MB in the end (delta: -460.8 MB). Peak memory consumption was 186.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:59:15,842 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 81.8 MB. Free memory is still 53.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 14:59:15,842 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.54 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 55.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2020-12-01 14:59:15,843 INFO L168 Benchmark]: Boogie Procedure Inliner took 93.36 ms. Allocated memory is still 98.6 MB. Free memory was 55.3 MB in the beginning and 52.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:59:15,843 INFO L168 Benchmark]: Boogie Preprocessor took 57.99 ms. Allocated memory is still 98.6 MB. Free memory was 52.4 MB in the beginning and 50.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:59:15,843 INFO L168 Benchmark]: RCFGBuilder took 1000.28 ms. Allocated memory is still 98.6 MB. Free memory was 50.0 MB in the beginning and 39.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. [2020-12-01 14:59:15,844 INFO L168 Benchmark]: TraceAbstraction took 18873.62 ms. Allocated memory was 98.6 MB in the beginning and 742.4 MB in the end (delta: 643.8 MB). Free memory was 38.5 MB in the beginning and 553.8 MB in the end (delta: -515.2 MB). Peak memory consumption was 128.3 MB. Max. memory is 16.1 GB. [2020-12-01 14:59:15,844 INFO L168 Benchmark]: Witness Printer took 162.61 ms. Allocated memory is still 742.4 MB. Free memory was 553.8 MB in the beginning and 531.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. [2020-12-01 14:59:15,846 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 81.8 MB. Free memory is still 53.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 391.54 ms. Allocated memory is still 98.6 MB. Free memory was 70.6 MB in the beginning and 55.3 MB in the end (delta: 15.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 93.36 ms. Allocated memory is still 98.6 MB. Free memory was 55.3 MB in the beginning and 52.4 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 57.99 ms. Allocated memory is still 98.6 MB. Free memory was 52.4 MB in the beginning and 50.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1000.28 ms. Allocated memory is still 98.6 MB. Free memory was 50.0 MB in the beginning and 39.0 MB in the end (delta: 11.1 MB). Peak memory consumption was 24.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 18873.62 ms. Allocated memory was 98.6 MB in the beginning and 742.4 MB in the end (delta: 643.8 MB). Free memory was 38.5 MB in the beginning and 553.8 MB in the end (delta: -515.2 MB). Peak memory consumption was 128.3 MB. Max. memory is 16.1 GB. * Witness Printer took 162.61 ms. Allocated memory is still 742.4 MB. Free memory was 553.8 MB in the beginning and 531.8 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L637] int s ; [L638] int tmp ; [L642] s = 8464 [L14] int s__info_callback = __VERIFIER_nondet_int() ; [L15] int s__in_handshake = __VERIFIER_nondet_int() ; [L16] int s__state ; [L17] int s__new_session ; [L18] int s__server ; [L19] int s__version = __VERIFIER_nondet_int() ; [L20] int s__type ; [L21] int s__init_num ; [L22] int s__hit = __VERIFIER_nondet_int() ; [L23] int s__rwstate ; [L24] int s__init_buf___0 = 1; [L25] int s__debug = __VERIFIER_nondet_int() ; [L26] int s__shutdown ; [L27] int s__cert = __VERIFIER_nondet_int() ; [L28] int s__options = __VERIFIER_nondet_int() ; [L29] int s__verify_mode = __VERIFIER_nondet_int() ; [L30] int s__session__peer = __VERIFIER_nondet_int() ; [L31] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L32] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L35] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L36] int s__s3__tmp__cert_request ; [L37] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__use_rsa_tmp ; [L39] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__new_cipher__algorithms ; [L41] int s__s3__tmp__next_state___0 ; [L42] int s__s3__tmp__new_cipher__algo_strength ; [L43] int s__session__cipher ; [L44] int buf ; [L45] unsigned long l ; [L46] unsigned long Time ; [L47] unsigned long tmp ; [L48] int cb ; [L49] long num1 = __VERIFIER_nondet_long() ; [L50] int ret ; [L51] int new_state ; [L52] int state ; [L53] int skip ; [L54] int got_new_session ; [L55] int tmp___1 = __VERIFIER_nondet_int() ; [L56] int tmp___2 = __VERIFIER_nondet_int() ; [L57] int tmp___3 = __VERIFIER_nondet_int() ; [L58] int tmp___4 = __VERIFIER_nondet_int() ; [L59] int tmp___5 = __VERIFIER_nondet_int() ; [L60] int tmp___6 = __VERIFIER_nondet_int() ; [L61] int tmp___7 = __VERIFIER_nondet_int() ; [L62] long tmp___8 = __VERIFIER_nondet_long() ; [L63] int tmp___9 = __VERIFIER_nondet_int() ; [L64] int tmp___10 = __VERIFIER_nondet_int() ; [L65] int blastFlag ; [L66] int __cil_tmp55 ; [L67] unsigned long __cil_tmp56 ; [L68] unsigned long __cil_tmp57 ; [L69] unsigned long __cil_tmp58 = __VERIFIER_nondet_ulong() ; [L70] unsigned long __cil_tmp59 ; [L71] int __cil_tmp60 ; [L72] unsigned long __cil_tmp61 ; [L75] s__state = initial_state [L76] blastFlag = 0 [L77] tmp = __VERIFIER_nondet_int() [L78] Time = tmp [L79] cb = 0 [L80] ret = -1 [L81] skip = 0 [L82] got_new_session = 0 [L83] COND TRUE s__info_callback != 0 [L84] cb = s__info_callback [L90] s__in_handshake ++ [L91] COND TRUE tmp___1 + 12288 [L92] COND TRUE tmp___2 + 16384 [L96] COND FALSE !(s__cert == 0) [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND TRUE s__state == 8464 [L273] s__shutdown = 0 [L274] ret = __VERIFIER_nondet_int() [L275] COND TRUE blastFlag == 0 [L276] blastFlag = 1 [L278] COND FALSE !(ret <= 0) [L281] got_new_session = 1 [L282] s__state = 8496 [L283] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND TRUE s__state == 8496 [L287] ret = __VERIFIER_nondet_int() [L288] COND TRUE blastFlag == 1 [L289] blastFlag = 2 [L295] COND FALSE !(ret <= 0) [L298] COND FALSE !(\read(s__hit)) [L301] s__state = 8512 [L303] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND TRUE s__state == 8512 [L308] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L309] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L310] COND TRUE __cil_tmp56 + 256UL [L311] skip = 1 [L319] s__state = 8528 [L320] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND TRUE s__state == 8528 [L324] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L325] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L327] __cil_tmp57 = (unsigned long )s__options [L328] COND TRUE __cil_tmp57 + 2097152UL [L329] s__s3__tmp__use_rsa_tmp = 1 [L334] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L361] ret = __VERIFIER_nondet_int() [L362] COND FALSE !(ret <= 0) [L379] s__state = 8544 [L380] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND FALSE !(s__state == 8528) [L151] COND FALSE !(s__state == 8529) [L154] COND TRUE s__state == 8544 [L384] COND TRUE s__verify_mode + 1 [L385] COND FALSE !(s__session__peer != 0) [L396] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L397] __cil_tmp61 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L398] COND FALSE !(__cil_tmp61 + 256UL) [L408] s__s3__tmp__cert_request = 1 [L409] ret = __VERIFIER_nondet_int() [L410] COND FALSE !(ret <= 0) [L413] s__state = 8448 [L414] s__s3__tmp__next_state___0 = 8576 [L415] s__init_num = 0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND FALSE !(s__state == 8528) [L151] COND FALSE !(s__state == 8529) [L154] COND FALSE !(s__state == 8544) [L157] COND FALSE !(s__state == 8545) [L160] COND FALSE !(s__state == 8560) [L163] COND FALSE !(s__state == 8561) [L166] COND TRUE s__state == 8448 [L436] COND FALSE !(num1 > 0L) [L445] s__state = s__s3__tmp__next_state___0 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND FALSE !(state == 8576) [L621] skip = 0 [L100] COND TRUE 1 [L102] state = s__state [L103] COND FALSE !(s__state == 12292) [L106] COND FALSE !(s__state == 16384) [L109] COND FALSE !(s__state == 8192) [L112] COND FALSE !(s__state == 24576) [L115] COND FALSE !(s__state == 8195) [L118] COND FALSE !(s__state == 8480) [L121] COND FALSE !(s__state == 8481) [L124] COND FALSE !(s__state == 8482) [L127] COND FALSE !(s__state == 8464) [L130] COND FALSE !(s__state == 8465) [L133] COND FALSE !(s__state == 8466) [L136] COND FALSE !(s__state == 8496) [L139] COND FALSE !(s__state == 8497) [L142] COND FALSE !(s__state == 8512) [L145] COND FALSE !(s__state == 8513) [L148] COND FALSE !(s__state == 8528) [L151] COND FALSE !(s__state == 8529) [L154] COND FALSE !(s__state == 8544) [L157] COND FALSE !(s__state == 8545) [L160] COND FALSE !(s__state == 8560) [L163] COND FALSE !(s__state == 8561) [L166] COND FALSE !(s__state == 8448) [L169] COND TRUE s__state == 8576 [L449] ret = __VERIFIER_nondet_int() [L450] COND FALSE !(ret <= 0) [L453] COND FALSE !(ret == 2) [L456] ret = __VERIFIER_nondet_int() [L457] COND FALSE !(ret <= 0) [L460] s__init_num = 0 [L461] s__state = 8592 [L586] COND FALSE !(! s__s3__tmp__reuse_message) [L604] COND TRUE state == 8576 [L605] COND TRUE s__state == 8592 [L606] COND TRUE tmp___1 != -12288 [L607] COND TRUE tmp___2 != -16384 [L608] COND TRUE __cil_tmp56 != 4294967040 [L609] COND TRUE __cil_tmp58 != 4294967294 [L610] COND TRUE tmp___7 != 1024 [L611] COND TRUE tmp___7 != 512 [L3] __assert_fail("0", "s3_srvr_11.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 150 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 18.6s, OverallIterations: 38, TraceHistogramMax: 7, AutomataDifference: 8.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 6459 SDtfs, 5740 SDslu, 2456 SDs, 0 SdLazy, 3268 SolverSat, 1244 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1549 GetRequests, 1488 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5835occurred in iteration=31, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.8s AutomataMinimizationTime, 37 MinimizatonAttempts, 1605 StatesRemovedByMinimization, 34 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 5451 NumberOfCodeBlocks, 5159 NumberOfCodeBlocksAsserted, 46 NumberOfCheckSat, 5214 ConstructedInterpolants, 0 QuantifiedInterpolants, 1228424 SizeOfPredicates, 1 NumberOfNonLiveVariables, 2643 ConjunctsInSsa, 18 ConjunctsInUnsatCore, 45 InterpolantComputations, 37 PerfectInterpolantSequences, 6988/7241 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 incorrect! Received shutdown request...