./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.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_f72f8439-aba9-47ed-8b62-b4be8d203997/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_f72f8439-aba9-47ed-8b62-b4be8d203997/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_f72f8439-aba9-47ed-8b62-b4be8d203997/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_f72f8439-aba9-47ed-8b62-b4be8d203997/bin/uautomizer/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_f72f8439-aba9-47ed-8b62-b4be8d203997/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_f72f8439-aba9-47ed-8b62-b4be8d203997/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 f8927ec5890c81ea18bc2a9cefa5e837a618c47d ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 15:02:36,554 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-01 15:02:36,556 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-01 15:02:36,611 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-01 15:02:36,612 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-01 15:02:36,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-01 15:02:36,619 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-01 15:02:36,641 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-01 15:02:36,643 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-01 15:02:36,644 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-01 15:02:36,645 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-01 15:02:36,646 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-01 15:02:36,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-01 15:02:36,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-01 15:02:36,649 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-01 15:02:36,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-01 15:02:36,652 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-01 15:02:36,656 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-01 15:02:36,660 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-01 15:02:36,665 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-01 15:02:36,666 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-01 15:02:36,669 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-01 15:02:36,672 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-01 15:02:36,673 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-01 15:02:36,683 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-01 15:02:36,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-01 15:02:36,684 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-01 15:02:36,686 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-01 15:02:36,687 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-01 15:02:36,688 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-01 15:02:36,688 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-01 15:02:36,689 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-01 15:02:36,691 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-01 15:02:36,692 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-01 15:02:36,693 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-01 15:02:36,694 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-01 15:02:36,695 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-01 15:02:36,695 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-01 15:02:36,695 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-01 15:02:36,696 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-01 15:02:36,697 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-01 15:02:36,699 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_f72f8439-aba9-47ed-8b62-b4be8d203997/bin/uautomizer/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-12-01 15:02:36,740 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-01 15:02:36,741 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-01 15:02:36,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-01 15:02:36,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-01 15:02:36,745 INFO L138 SettingsManager]: * Use SBE=true [2020-12-01 15:02:36,746 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-01 15:02:36,746 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-01 15:02:36,746 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-01 15:02:36,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-01 15:02:36,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-01 15:02:36,747 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-01 15:02:36,748 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-01 15:02:36,748 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-01 15:02:36,748 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-01 15:02:36,748 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-01 15:02:36,748 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-01 15:02:36,748 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-01 15:02:36,749 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-01 15:02:36,749 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-01 15:02:36,749 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-01 15:02:36,749 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-01 15:02:36,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-01 15:02:36,750 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-01 15:02:36,750 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-01 15:02:36,750 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-01 15:02:36,751 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-01 15:02:36,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-01 15:02:36,751 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-01 15:02:36,751 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-01 15:02:36,751 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_f72f8439-aba9-47ed-8b62-b4be8d203997/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_f72f8439-aba9-47ed-8b62-b4be8d203997/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8927ec5890c81ea18bc2a9cefa5e837a618c47d [2020-12-01 15:02:37,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-01 15:02:37,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-01 15:02:37,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-01 15:02:37,112 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-01 15:02:37,113 INFO L275 PluginConnector]: CDTParser initialized [2020-12-01 15:02:37,114 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_f72f8439-aba9-47ed-8b62-b4be8d203997/bin/uautomizer/../../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c [2020-12-01 15:02:37,205 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f72f8439-aba9-47ed-8b62-b4be8d203997/bin/uautomizer/data/e20fc35c9/fb228e9814794cf7af22056b13ce6826/FLAGa6bbc9aad [2020-12-01 15:02:37,831 INFO L306 CDTParser]: Found 1 translation units. [2020-12-01 15:02:37,831 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_f72f8439-aba9-47ed-8b62-b4be8d203997/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c [2020-12-01 15:02:37,845 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_f72f8439-aba9-47ed-8b62-b4be8d203997/bin/uautomizer/data/e20fc35c9/fb228e9814794cf7af22056b13ce6826/FLAGa6bbc9aad [2020-12-01 15:02:38,140 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_f72f8439-aba9-47ed-8b62-b4be8d203997/bin/uautomizer/data/e20fc35c9/fb228e9814794cf7af22056b13ce6826 [2020-12-01 15:02:38,143 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-01 15:02:38,145 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-01 15:02:38,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-01 15:02:38,149 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-01 15:02:38,156 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-01 15:02:38,158 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:02:38" (1/1) ... [2020-12-01 15:02:38,160 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@295c81d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:02:38, skipping insertion in model container [2020-12-01 15:02:38,160 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 03:02:38" (1/1) ... [2020-12-01 15:02:38,167 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-01 15:02:38,216 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-01 15:02:38,575 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:02:38,602 INFO L203 MainTranslator]: Completed pre-run [2020-12-01 15:02:38,668 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-01 15:02:38,689 INFO L208 MainTranslator]: Completed translation [2020-12-01 15:02:38,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:02:38 WrapperNode [2020-12-01 15:02:38,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-01 15:02:38,696 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-01 15:02:38,696 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-01 15:02:38,697 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-01 15:02:38,706 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:02:38" (1/1) ... [2020-12-01 15:02:38,738 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:02:38" (1/1) ... [2020-12-01 15:02:38,797 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-01 15:02:38,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-01 15:02:38,809 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-01 15:02:38,809 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-01 15:02:38,820 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:02:38" (1/1) ... [2020-12-01 15:02:38,820 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:02:38" (1/1) ... [2020-12-01 15:02:38,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:02:38" (1/1) ... [2020-12-01 15:02:38,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:02:38" (1/1) ... [2020-12-01 15:02:38,854 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:02:38" (1/1) ... [2020-12-01 15:02:38,869 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:02:38" (1/1) ... [2020-12-01 15:02:38,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:02:38" (1/1) ... [2020-12-01 15:02:38,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-01 15:02:38,904 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-01 15:02:38,904 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-01 15:02:38,904 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-01 15:02:38,905 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:02:38" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_f72f8439-aba9-47ed-8b62-b4be8d203997/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 15:02:38,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-01 15:02:38,974 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-01 15:02:38,974 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-01 15:02:38,974 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-01 15:02:39,156 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-01 15:02:39,883 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-12-01 15:02:39,887 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-12-01 15:02:39,899 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-01 15:02:39,901 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-12-01 15:02:39,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:02:39 BoogieIcfgContainer [2020-12-01 15:02:39,906 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-01 15:02:39,921 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-01 15:02:39,922 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-01 15:02:39,926 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-01 15:02:39,927 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 01.12 03:02:38" (1/3) ... [2020-12-01 15:02:39,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e447192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:02:39, skipping insertion in model container [2020-12-01 15:02:39,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 03:02:38" (2/3) ... [2020-12-01 15:02:39,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e447192 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 01.12 03:02:39, skipping insertion in model container [2020-12-01 15:02:39,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:02:39" (3/3) ... [2020-12-01 15:02:39,931 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_4.cil-2.c [2020-12-01 15:02:39,950 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-01 15:02:39,955 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-01 15:02:39,969 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-12-01 15:02:40,020 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-01 15:02:40,020 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-01 15:02:40,021 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-01 15:02:40,022 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-01 15:02:40,022 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-01 15:02:40,022 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-01 15:02:40,022 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-01 15:02:40,023 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-01 15:02:40,052 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states. [2020-12-01 15:02:40,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-01 15:02:40,069 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:02:40,070 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] [2020-12-01 15:02:40,071 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:02:40,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:02:40,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1457695038, now seen corresponding path program 1 times [2020-12-01 15:02:40,092 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:02:40,093 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879884034] [2020-12-01 15:02:40,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:02:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:02:40,440 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 15:02:40,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879884034] [2020-12-01 15:02:40,442 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:02:40,442 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:02:40,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [670574390] [2020-12-01 15:02:40,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:02:40,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:02:40,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:02:40,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:02:40,467 INFO L87 Difference]: Start difference. First operand 129 states. Second operand 3 states. [2020-12-01 15:02:40,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:02:40,828 INFO L93 Difference]: Finished difference Result 253 states and 428 transitions. [2020-12-01 15:02:40,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:02:40,830 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-12-01 15:02:40,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:02:40,843 INFO L225 Difference]: With dead ends: 253 [2020-12-01 15:02:40,843 INFO L226 Difference]: Without dead ends: 115 [2020-12-01 15:02:40,847 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 15:02:40,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-12-01 15:02:40,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2020-12-01 15:02:40,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-12-01 15:02:40,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2020-12-01 15:02:40,937 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2020-12-01 15:02:40,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:02:40,938 INFO L481 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2020-12-01 15:02:40,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:02:40,938 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2020-12-01 15:02:40,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-01 15:02:40,940 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:02:40,941 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-01 15:02:40,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-01 15:02:40,941 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:02:40,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:02:40,942 INFO L82 PathProgramCache]: Analyzing trace with hash 561717339, now seen corresponding path program 1 times [2020-12-01 15:02:40,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:02:40,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431242646] [2020-12-01 15:02:40,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:02:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:02:41,056 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-01 15:02:41,057 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431242646] [2020-12-01 15:02:41,057 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:02:41,057 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:02:41,058 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710092905] [2020-12-01 15:02:41,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:02:41,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:02:41,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:02:41,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:02:41,065 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand 3 states. [2020-12-01 15:02:41,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:02:41,286 INFO L93 Difference]: Finished difference Result 238 states and 360 transitions. [2020-12-01 15:02:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:02:41,287 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 37 [2020-12-01 15:02:41,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:02:41,296 INFO L225 Difference]: With dead ends: 238 [2020-12-01 15:02:41,296 INFO L226 Difference]: Without dead ends: 133 [2020-12-01 15:02:41,298 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 15:02:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-12-01 15:02:41,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2020-12-01 15:02:41,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-01 15:02:41,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2020-12-01 15:02:41,353 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 37 [2020-12-01 15:02:41,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:02:41,355 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2020-12-01 15:02:41,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:02:41,356 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2020-12-01 15:02:41,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-12-01 15:02:41,362 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:02:41,363 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-12-01 15:02:41,385 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-01 15:02:41,386 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:02:41,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:02:41,399 INFO L82 PathProgramCache]: Analyzing trace with hash 356453796, now seen corresponding path program 1 times [2020-12-01 15:02:41,400 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:02:41,400 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469669150] [2020-12-01 15:02:41,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:02:41,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:02:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-12-01 15:02:41,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469669150] [2020-12-01 15:02:41,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:02:41,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:02:41,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418948130] [2020-12-01 15:02:41,512 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:02:41,512 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:02:41,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:02:41,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:02:41,513 INFO L87 Difference]: Start difference. First operand 130 states and 192 transitions. Second operand 3 states. [2020-12-01 15:02:41,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:02:41,697 INFO L93 Difference]: Finished difference Result 271 states and 406 transitions. [2020-12-01 15:02:41,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:02:41,697 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 51 [2020-12-01 15:02:41,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:02:41,699 INFO L225 Difference]: With dead ends: 271 [2020-12-01 15:02:41,699 INFO L226 Difference]: Without dead ends: 151 [2020-12-01 15:02:41,701 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 15:02:41,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-12-01 15:02:41,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2020-12-01 15:02:41,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-12-01 15:02:41,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2020-12-01 15:02:41,717 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 51 [2020-12-01 15:02:41,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:02:41,718 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2020-12-01 15:02:41,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:02:41,718 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2020-12-01 15:02:41,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-01 15:02:41,720 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:02:41,721 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-12-01 15:02:41,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-01 15:02:41,721 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:02:41,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:02:41,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1231505257, now seen corresponding path program 1 times [2020-12-01 15:02:41,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:02:41,722 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015054371] [2020-12-01 15:02:41,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:02:41,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:02:41,895 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-01 15:02:41,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015054371] [2020-12-01 15:02:41,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:02:41,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:02:41,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469187955] [2020-12-01 15:02:41,900 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:02:41,900 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:02:41,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:02:41,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:02:41,904 INFO L87 Difference]: Start difference. First operand 147 states and 214 transitions. Second operand 3 states. [2020-12-01 15:02:42,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:02:42,122 INFO L93 Difference]: Finished difference Result 335 states and 503 transitions. [2020-12-01 15:02:42,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:02:42,123 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-01 15:02:42,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:02:42,126 INFO L225 Difference]: With dead ends: 335 [2020-12-01 15:02:42,126 INFO L226 Difference]: Without dead ends: 197 [2020-12-01 15:02:42,130 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 15:02:42,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-12-01 15:02:42,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 188. [2020-12-01 15:02:42,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-12-01 15:02:42,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 264 transitions. [2020-12-01 15:02:42,167 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 264 transitions. Word has length 68 [2020-12-01 15:02:42,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:02:42,172 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 264 transitions. [2020-12-01 15:02:42,172 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:02:42,173 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 264 transitions. [2020-12-01 15:02:42,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-12-01 15:02:42,178 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:02:42,181 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 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] [2020-12-01 15:02:42,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-01 15:02:42,181 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:02:42,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:02:42,183 INFO L82 PathProgramCache]: Analyzing trace with hash 1258023705, now seen corresponding path program 1 times [2020-12-01 15:02:42,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:02:42,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763981195] [2020-12-01 15:02:42,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:02:42,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:02:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-12-01 15:02:42,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763981195] [2020-12-01 15:02:42,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:02:42,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:02:42,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992781488] [2020-12-01 15:02:42,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:02:42,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:02:42,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:02:42,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:02:42,315 INFO L87 Difference]: Start difference. First operand 188 states and 264 transitions. Second operand 3 states. [2020-12-01 15:02:42,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:02:42,485 INFO L93 Difference]: Finished difference Result 391 states and 557 transitions. [2020-12-01 15:02:42,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:02:42,486 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 68 [2020-12-01 15:02:42,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:02:42,488 INFO L225 Difference]: With dead ends: 391 [2020-12-01 15:02:42,488 INFO L226 Difference]: Without dead ends: 213 [2020-12-01 15:02:42,490 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 15:02:42,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2020-12-01 15:02:42,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 207. [2020-12-01 15:02:42,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-12-01 15:02:42,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 288 transitions. [2020-12-01 15:02:42,514 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 288 transitions. Word has length 68 [2020-12-01 15:02:42,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:02:42,515 INFO L481 AbstractCegarLoop]: Abstraction has 207 states and 288 transitions. [2020-12-01 15:02:42,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:02:42,515 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 288 transitions. [2020-12-01 15:02:42,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-12-01 15:02:42,517 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:02:42,518 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 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] [2020-12-01 15:02:42,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-01 15:02:42,518 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:02:42,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:02:42,519 INFO L82 PathProgramCache]: Analyzing trace with hash -1378844437, now seen corresponding path program 1 times [2020-12-01 15:02:42,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:02:42,519 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353939312] [2020-12-01 15:02:42,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:02:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:02:42,648 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2020-12-01 15:02:42,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353939312] [2020-12-01 15:02:42,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:02:42,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:02:42,651 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235750596] [2020-12-01 15:02:42,652 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:02:42,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:02:42,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:02:42,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:02:42,654 INFO L87 Difference]: Start difference. First operand 207 states and 288 transitions. Second operand 3 states. [2020-12-01 15:02:42,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:02:42,884 INFO L93 Difference]: Finished difference Result 428 states and 604 transitions. [2020-12-01 15:02:42,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:02:42,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-12-01 15:02:42,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:02:42,889 INFO L225 Difference]: With dead ends: 428 [2020-12-01 15:02:42,890 INFO L226 Difference]: Without dead ends: 231 [2020-12-01 15:02:42,891 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 15:02:42,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-12-01 15:02:42,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2020-12-01 15:02:42,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 228 states. [2020-12-01 15:02:42,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 314 transitions. [2020-12-01 15:02:42,914 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 314 transitions. Word has length 85 [2020-12-01 15:02:42,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:02:42,916 INFO L481 AbstractCegarLoop]: Abstraction has 228 states and 314 transitions. [2020-12-01 15:02:42,916 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:02:42,916 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 314 transitions. [2020-12-01 15:02:42,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-01 15:02:42,923 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:02:42,924 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 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] [2020-12-01 15:02:42,925 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-01 15:02:42,925 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:02:42,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:02:42,930 INFO L82 PathProgramCache]: Analyzing trace with hash 311084899, now seen corresponding path program 1 times [2020-12-01 15:02:42,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:02:42,931 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463416136] [2020-12-01 15:02:42,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:02:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:02:43,035 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-12-01 15:02:43,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1463416136] [2020-12-01 15:02:43,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:02:43,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:02:43,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538441582] [2020-12-01 15:02:43,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:02:43,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:02:43,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:02:43,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:02:43,039 INFO L87 Difference]: Start difference. First operand 228 states and 314 transitions. Second operand 3 states. [2020-12-01 15:02:43,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:02:43,111 INFO L93 Difference]: Finished difference Result 660 states and 910 transitions. [2020-12-01 15:02:43,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:02:43,112 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-01 15:02:43,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:02:43,118 INFO L225 Difference]: With dead ends: 660 [2020-12-01 15:02:43,118 INFO L226 Difference]: Without dead ends: 442 [2020-12-01 15:02:43,120 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 15:02:43,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2020-12-01 15:02:43,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2020-12-01 15:02:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 442 states. [2020-12-01 15:02:43,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 605 transitions. [2020-12-01 15:02:43,151 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 605 transitions. Word has length 105 [2020-12-01 15:02:43,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:02:43,152 INFO L481 AbstractCegarLoop]: Abstraction has 442 states and 605 transitions. [2020-12-01 15:02:43,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:02:43,152 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 605 transitions. [2020-12-01 15:02:43,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-01 15:02:43,154 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:02:43,154 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 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] [2020-12-01 15:02:43,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-01 15:02:43,155 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:02:43,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:02:43,156 INFO L82 PathProgramCache]: Analyzing trace with hash 990357153, now seen corresponding path program 1 times [2020-12-01 15:02:43,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:02:43,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396205190] [2020-12-01 15:02:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:02:43,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:02:43,284 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-12-01 15:02:43,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396205190] [2020-12-01 15:02:43,285 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:02:43,285 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:02:43,285 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302917946] [2020-12-01 15:02:43,286 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:02:43,286 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:02:43,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:02:43,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:02:43,287 INFO L87 Difference]: Start difference. First operand 442 states and 605 transitions. Second operand 3 states. [2020-12-01 15:02:43,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:02:43,320 INFO L93 Difference]: Finished difference Result 895 states and 1224 transitions. [2020-12-01 15:02:43,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:02:43,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-01 15:02:43,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:02:43,324 INFO L225 Difference]: With dead ends: 895 [2020-12-01 15:02:43,325 INFO L226 Difference]: Without dead ends: 463 [2020-12-01 15:02:43,326 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 15:02:43,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-12-01 15:02:43,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2020-12-01 15:02:43,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 463 states. [2020-12-01 15:02:43,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 632 transitions. [2020-12-01 15:02:43,343 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 632 transitions. Word has length 105 [2020-12-01 15:02:43,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:02:43,344 INFO L481 AbstractCegarLoop]: Abstraction has 463 states and 632 transitions. [2020-12-01 15:02:43,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:02:43,344 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 632 transitions. [2020-12-01 15:02:43,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-12-01 15:02:43,346 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:02:43,347 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 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] [2020-12-01 15:02:43,347 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-01 15:02:43,347 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:02:43,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:02:43,348 INFO L82 PathProgramCache]: Analyzing trace with hash 1829390815, now seen corresponding path program 1 times [2020-12-01 15:02:43,348 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:02:43,348 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [982407025] [2020-12-01 15:02:43,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:02:43,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-01 15:02:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-12-01 15:02:43,403 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [982407025] [2020-12-01 15:02:43,403 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-01 15:02:43,403 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-01 15:02:43,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51408428] [2020-12-01 15:02:43,404 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-01 15:02:43,404 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-01 15:02:43,405 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-01 15:02:43,405 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-01 15:02:43,405 INFO L87 Difference]: Start difference. First operand 463 states and 632 transitions. Second operand 3 states. [2020-12-01 15:02:43,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-01 15:02:43,445 INFO L93 Difference]: Finished difference Result 943 states and 1285 transitions. [2020-12-01 15:02:43,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-01 15:02:43,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-12-01 15:02:43,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-01 15:02:43,451 INFO L225 Difference]: With dead ends: 943 [2020-12-01 15:02:43,452 INFO L226 Difference]: Without dead ends: 490 [2020-12-01 15:02:43,453 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 15:02:43,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2020-12-01 15:02:43,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2020-12-01 15:02:43,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 490 states. [2020-12-01 15:02:43,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 666 transitions. [2020-12-01 15:02:43,471 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 666 transitions. Word has length 105 [2020-12-01 15:02:43,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-01 15:02:43,471 INFO L481 AbstractCegarLoop]: Abstraction has 490 states and 666 transitions. [2020-12-01 15:02:43,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-01 15:02:43,472 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 666 transitions. [2020-12-01 15:02:43,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-12-01 15:02:43,474 INFO L414 BasicCegarLoop]: Found error trace [2020-12-01 15:02:43,474 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 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] [2020-12-01 15:02:43,475 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-01 15:02:43,475 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-01 15:02:43,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-01 15:02:43,477 INFO L82 PathProgramCache]: Analyzing trace with hash -915547054, now seen corresponding path program 1 times [2020-12-01 15:02:43,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-01 15:02:43,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824183226] [2020-12-01 15:02:43,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-01 15:02:43,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:02:43,556 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:02:43,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-01 15:02:43,612 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-01 15:02:43,694 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-12-01 15:02:43,694 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-01 15:02:43,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-01 15:02:43,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 01.12 03:02:43 BoogieIcfgContainer [2020-12-01 15:02:43,829 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-01 15:02:43,830 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-01 15:02:43,830 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-01 15:02:43,831 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-01 15:02:43,831 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 03:02:39" (3/4) ... [2020-12-01 15:02:43,834 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-12-01 15:02:43,982 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_f72f8439-aba9-47ed-8b62-b4be8d203997/bin/uautomizer/witness.graphml [2020-12-01 15:02:43,983 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-01 15:02:43,985 INFO L168 Benchmark]: Toolchain (without parser) took 5839.00 ms. Allocated memory was 119.5 MB in the beginning and 165.7 MB in the end (delta: 46.1 MB). Free memory was 85.5 MB in the beginning and 132.5 MB in the end (delta: -47.0 MB). Peak memory consumption was 88.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:02:43,986 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory was 34.1 MB in the beginning and 34.1 MB in the end (delta: 38.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-01 15:02:43,986 INFO L168 Benchmark]: CACSL2BoogieTranslator took 543.83 ms. Allocated memory is still 119.5 MB. Free memory was 85.3 MB in the beginning and 90.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-12-01 15:02:43,987 INFO L168 Benchmark]: Boogie Procedure Inliner took 110.30 ms. Allocated memory is still 119.5 MB. Free memory was 90.6 MB in the beginning and 87.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:02:43,988 INFO L168 Benchmark]: Boogie Preprocessor took 95.63 ms. Allocated memory is still 119.5 MB. Free memory was 87.9 MB in the beginning and 85.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-01 15:02:43,988 INFO L168 Benchmark]: RCFGBuilder took 1002.58 ms. Allocated memory is still 119.5 MB. Free memory was 85.7 MB in the beginning and 92.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 53.7 MB. Max. memory is 16.1 GB. [2020-12-01 15:02:43,989 INFO L168 Benchmark]: TraceAbstraction took 3907.98 ms. Allocated memory is still 165.7 MB. Free memory was 141.0 MB in the beginning and 51.9 MB in the end (delta: 89.1 MB). Peak memory consumption was 88.0 MB. Max. memory is 16.1 GB. [2020-12-01 15:02:43,989 INFO L168 Benchmark]: Witness Printer took 153.02 ms. Allocated memory is still 165.7 MB. Free memory was 51.9 MB in the beginning and 132.5 MB in the end (delta: -80.5 MB). Peak memory consumption was 8.6 MB. Max. memory is 16.1 GB. [2020-12-01 15:02:43,991 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 75.5 MB. Free memory was 34.1 MB in the beginning and 34.1 MB in the end (delta: 38.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 543.83 ms. Allocated memory is still 119.5 MB. Free memory was 85.3 MB in the beginning and 90.6 MB in the end (delta: -5.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 110.30 ms. Allocated memory is still 119.5 MB. Free memory was 90.6 MB in the beginning and 87.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 95.63 ms. Allocated memory is still 119.5 MB. Free memory was 87.9 MB in the beginning and 85.7 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1002.58 ms. Allocated memory is still 119.5 MB. Free memory was 85.7 MB in the beginning and 92.9 MB in the end (delta: -7.2 MB). Peak memory consumption was 53.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3907.98 ms. Allocated memory is still 165.7 MB. Free memory was 141.0 MB in the beginning and 51.9 MB in the end (delta: 89.1 MB). Peak memory consumption was 88.0 MB. Max. memory is 16.1 GB. * Witness Printer took 153.02 ms. Allocated memory is still 165.7 MB. Free memory was 51.9 MB in the beginning and 132.5 MB in the end (delta: -80.5 MB). Peak memory consumption was 8.6 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: [L555] int s ; [L559] s = 12292 [L13] int s__info_callback = __VERIFIER_nondet_int() ; [L14] int s__in_handshake = __VERIFIER_nondet_int() ; [L15] int s__state ; [L16] int s__new_session ; [L17] int s__server ; [L18] int s__version = __VERIFIER_nondet_int() ; [L19] int s__type ; [L20] int s__init_num ; [L21] int s__bbio = __VERIFIER_nondet_int() ; [L22] int s__wbio = __VERIFIER_nondet_int() ; [L23] int s__hit = __VERIFIER_nondet_int() ; [L24] int s__rwstate ; [L25] int s__init_buf___0 = __VERIFIER_nondet_int() ; [L26] int s__debug = __VERIFIER_nondet_int() ; [L27] int s__shutdown ; [L28] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L29] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L30] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L31] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L33] int s__s3__change_cipher_spec ; [L34] int s__s3__flags = __VERIFIER_nondet_int() ; [L35] int s__s3__delay_buf_pop_ret ; [L36] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L37] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L38] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L40] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L41] int s__s3__tmp__next_state___0 ; [L42] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L43] int s__session__cipher ; [L44] int s__session__compress_meth ; [L45] int buf ; [L46] unsigned long tmp ; [L47] unsigned long l ; [L48] int num1 = __VERIFIER_nondet_int() ; [L49] int cb ; [L50] int ret ; [L51] int new_state ; [L52] int state ; [L53] int skip ; [L54] int tmp___0 ; [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] int tmp___8 = __VERIFIER_nondet_int() ; [L63] int tmp___9 = __VERIFIER_nondet_int() ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] unsigned long __cil_tmp56 ; [L67] long __cil_tmp57 ; [L68] long __cil_tmp58 ; [L69] long __cil_tmp59 ; [L70] long __cil_tmp60 ; [L71] long __cil_tmp61 ; [L72] long __cil_tmp62 ; [L73] long __cil_tmp63 ; [L74] long __cil_tmp64 ; [L75] long __cil_tmp65 ; [L79] s__state = initial_state [L80] blastFlag = 0 [L81] tmp = __VERIFIER_nondet_int() [L82] cb = 0 [L83] ret = -1 [L84] skip = 0 [L85] tmp___0 = 0 [L86] COND TRUE s__info_callback != 0 [L87] cb = s__info_callback [L93] s__in_handshake ++ [L94] COND FALSE !(tmp___1 + 12288) [L100] COND TRUE 1 [L102] state = s__state [L103] COND TRUE s__state == 12292 [L205] s__new_session = 1 [L206] s__state = 4096 [L207] s__ctx__stats__sess_connect_renegotiate ++ [L212] s__server = 0 [L213] COND TRUE cb != 0 [L217] __cil_tmp55 = s__version + 65280 [L218] COND FALSE !(__cil_tmp55 != 768) [L223] s__type = 4096 [L224] COND FALSE !(s__init_buf___0 == 0) [L236] COND FALSE !(! tmp___4) [L240] COND FALSE !(! tmp___5) [L244] s__state = 4368 [L245] s__ctx__stats__sess_connect ++ [L246] s__init_num = 0 [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] 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 == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND TRUE s__state == 4368 [L250] s__shutdown = 0 [L251] ret = __VERIFIER_nondet_int() [L252] COND TRUE blastFlag == 0 [L253] blastFlag = 1 [L255] COND FALSE !(ret <= 0) [L258] s__state = 4384 [L259] s__init_num = 0 [L260] COND TRUE s__bbio != s__wbio [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] 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 == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND TRUE s__state == 4384 [L266] ret = __VERIFIER_nondet_int() [L267] COND TRUE blastFlag == 1 [L268] blastFlag = 2 [L270] COND FALSE !(ret <= 0) [L273] COND FALSE !(\read(s__hit)) [L276] s__state = 4400 [L278] s__init_num = 0 [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] 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 == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND TRUE s__state == 4400 [L283] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L284] COND FALSE !(__cil_tmp56 + 256UL) [L287] ret = __VERIFIER_nondet_int() [L288] COND TRUE blastFlag == 2 [L289] blastFlag = 3 [L295] COND FALSE !(ret <= 0) [L300] s__state = 4416 [L301] s__init_num = 0 [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] 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 == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND TRUE s__state == 4416 [L305] ret = __VERIFIER_nondet_int() [L306] COND TRUE blastFlag == 3 [L307] blastFlag = 4 [L309] COND FALSE !(ret <= 0) [L312] s__state = 4432 [L313] s__init_num = 0 [L314] COND FALSE !(! tmp___6) [L522] COND FALSE !(! s__s3__tmp__reuse_message) [L539] 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 == 4096) [L112] COND FALSE !(s__state == 20480) [L115] COND FALSE !(s__state == 4099) [L118] COND FALSE !(s__state == 4368) [L121] COND FALSE !(s__state == 4369) [L124] COND FALSE !(s__state == 4384) [L127] COND FALSE !(s__state == 4385) [L130] COND FALSE !(s__state == 4400) [L133] COND FALSE !(s__state == 4401) [L136] COND FALSE !(s__state == 4416) [L139] COND FALSE !(s__state == 4417) [L142] COND TRUE s__state == 4432 [L321] ret = __VERIFIER_nondet_int() [L322] COND TRUE blastFlag == 4 [L3] __assert_fail("0", "s3_clnt_4.cil-2.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.6s, OverallIterations: 10, TraceHistogramMax: 6, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1631 SDtfs, 274 SDslu, 970 SDs, 0 SdLazy, 641 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=490occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 9 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 755 NumberOfCodeBlocks, 755 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 639 ConstructedInterpolants, 0 QuantifiedInterpolants, 78987 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 PerfectInterpolantSequences, 586/586 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...