./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 b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/config/AutomizerReach.xml -i ../../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg --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 fff9cde623383cf9e2df28e9a74a552535a697b1d30f241b8170c5e4baf125a5 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 0.2.1-dev-b2eff8b [2021-10-28 08:52:36,016 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-28 08:52:36,020 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-28 08:52:36,073 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-28 08:52:36,074 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-28 08:52:36,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-28 08:52:36,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-28 08:52:36,081 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-28 08:52:36,085 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-28 08:52:36,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-28 08:52:36,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-28 08:52:36,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-28 08:52:36,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-28 08:52:36,092 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-28 08:52:36,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-28 08:52:36,097 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-28 08:52:36,099 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-28 08:52:36,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-28 08:52:36,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-28 08:52:36,107 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-28 08:52:36,109 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-28 08:52:36,115 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-28 08:52:36,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-28 08:52:36,124 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-28 08:52:36,139 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-28 08:52:36,142 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-28 08:52:36,143 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-28 08:52:36,145 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-28 08:52:36,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-28 08:52:36,149 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-28 08:52:36,150 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-28 08:52:36,151 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-28 08:52:36,153 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-28 08:52:36,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-28 08:52:36,159 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-28 08:52:36,160 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-28 08:52:36,161 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-28 08:52:36,161 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-28 08:52:36,162 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-28 08:52:36,163 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-28 08:52:36,164 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-28 08:52:36,165 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-10-28 08:52:36,206 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-28 08:52:36,206 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-28 08:52:36,207 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-28 08:52:36,207 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-28 08:52:36,209 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-28 08:52:36,209 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-28 08:52:36,209 INFO L138 SettingsManager]: * Use SBE=true [2021-10-28 08:52:36,210 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-28 08:52:36,210 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-28 08:52:36,210 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-28 08:52:36,211 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-28 08:52:36,211 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-28 08:52:36,211 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-28 08:52:36,212 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-28 08:52:36,212 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-28 08:52:36,212 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-28 08:52:36,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-28 08:52:36,213 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-28 08:52:36,213 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-28 08:52:36,213 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-28 08:52:36,214 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-28 08:52:36,214 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-28 08:52:36,214 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:52:36,215 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-28 08:52:36,215 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-28 08:52:36,215 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-28 08:52:36,215 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-28 08:52:36,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-28 08:52:36,216 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-10-28 08:52:36,216 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-10-28 08:52:36,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-28 08:52:36,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-28 08:52:36,217 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_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fff9cde623383cf9e2df28e9a74a552535a697b1d30f241b8170c5e4baf125a5 [2021-10-28 08:52:36,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-28 08:52:36,662 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-28 08:52:36,666 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-28 08:52:36,667 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-28 08:52:36,669 INFO L275 PluginConnector]: CDTParser initialized [2021-10-28 08:52:36,670 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/../../sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c [2021-10-28 08:52:36,752 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/data/1d4efe0f4/6329546c0444405fb830ce9178c481b9/FLAGbaca0e2d0 [2021-10-28 08:52:37,401 INFO L306 CDTParser]: Found 1 translation units. [2021-10-28 08:52:37,402 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c [2021-10-28 08:52:37,424 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/data/1d4efe0f4/6329546c0444405fb830ce9178c481b9/FLAGbaca0e2d0 [2021-10-28 08:52:37,698 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/data/1d4efe0f4/6329546c0444405fb830ce9178c481b9 [2021-10-28 08:52:37,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-28 08:52:37,715 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-28 08:52:37,720 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-28 08:52:37,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-28 08:52:37,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-28 08:52:37,727 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:52:37" (1/1) ... [2021-10-28 08:52:37,729 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73e3f5ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:37, skipping insertion in model container [2021-10-28 08:52:37,729 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:52:37" (1/1) ... [2021-10-28 08:52:37,739 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-28 08:52:37,794 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-28 08:52:38,110 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c[35909,35922] [2021-10-28 08:52:38,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:52:38,141 INFO L203 MainTranslator]: Completed pre-run [2021-10-28 08:52:38,288 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/sv-benchmarks/c/openssl-simplified/s3_clnt_4.cil-2.c[35909,35922] [2021-10-28 08:52:38,291 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-28 08:52:38,318 INFO L208 MainTranslator]: Completed translation [2021-10-28 08:52:38,318 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:38 WrapperNode [2021-10-28 08:52:38,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-28 08:52:38,320 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-28 08:52:38,327 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-28 08:52:38,327 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-28 08:52:38,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:38" (1/1) ... [2021-10-28 08:52:38,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:38" (1/1) ... [2021-10-28 08:52:38,422 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-28 08:52:38,423 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-28 08:52:38,423 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-28 08:52:38,423 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-28 08:52:38,434 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:38" (1/1) ... [2021-10-28 08:52:38,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:38" (1/1) ... [2021-10-28 08:52:38,445 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:38" (1/1) ... [2021-10-28 08:52:38,455 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:38" (1/1) ... [2021-10-28 08:52:38,476 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:38" (1/1) ... [2021-10-28 08:52:38,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:38" (1/1) ... [2021-10-28 08:52:38,510 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:38" (1/1) ... [2021-10-28 08:52:38,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-28 08:52:38,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-28 08:52:38,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-28 08:52:38,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-28 08:52:38,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:38" (1/1) ... [2021-10-28 08:52:38,528 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-28 08:52:38,549 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/z3 [2021-10-28 08:52:38,567 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-28 08:52:38,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-28 08:52:38,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-28 08:52:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-28 08:52:38,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-28 08:52:38,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-28 08:52:38,775 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-10-28 08:52:39,506 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2021-10-28 08:52:39,506 INFO L758 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2021-10-28 08:52:39,517 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-28 08:52:39,518 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-10-28 08:52:39,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:52:39 BoogieIcfgContainer [2021-10-28 08:52:39,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-28 08:52:39,523 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-28 08:52:39,523 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-28 08:52:39,527 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-28 08:52:39,528 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:52:37" (1/3) ... [2021-10-28 08:52:39,528 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375670c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:52:39, skipping insertion in model container [2021-10-28 08:52:39,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:52:38" (2/3) ... [2021-10-28 08:52:39,529 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@375670c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:52:39, skipping insertion in model container [2021-10-28 08:52:39,529 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:52:39" (3/3) ... [2021-10-28 08:52:39,531 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_clnt_4.cil-2.c [2021-10-28 08:52:39,538 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-28 08:52:39,538 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-10-28 08:52:39,594 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-28 08:52:39,602 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-10-28 08:52:39,602 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-10-28 08:52:39,624 INFO L276 IsEmpty]: Start isEmpty. Operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:39,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-10-28 08:52:39,633 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:39,634 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:39,635 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:52:39,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:39,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1457695038, now seen corresponding path program 1 times [2021-10-28 08:52:39,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:39,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086159665] [2021-10-28 08:52:39,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:39,657 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:39,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:39,885 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:39,886 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086159665] [2021-10-28 08:52:39,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086159665] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:39,887 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:39,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:52:39,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1646976749] [2021-10-28 08:52:39,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:52:39,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:39,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:52:39,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:39,919 INFO L87 Difference]: Start difference. First operand has 128 states, 126 states have (on average 1.7142857142857142) internal successors, (216), 127 states have internal predecessors, (216), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:40,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:40,108 INFO L93 Difference]: Finished difference Result 252 states and 427 transitions. [2021-10-28 08:52:40,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:52:40,111 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2021-10-28 08:52:40,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:40,125 INFO L225 Difference]: With dead ends: 252 [2021-10-28 08:52:40,125 INFO L226 Difference]: Without dead ends: 115 [2021-10-28 08:52:40,129 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:40,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2021-10-28 08:52:40,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 115. [2021-10-28 08:52:40,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 114 states have (on average 1.5087719298245614) internal successors, (172), 114 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:40,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 172 transitions. [2021-10-28 08:52:40,187 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 172 transitions. Word has length 24 [2021-10-28 08:52:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:40,188 INFO L470 AbstractCegarLoop]: Abstraction has 115 states and 172 transitions. [2021-10-28 08:52:40,188 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 172 transitions. [2021-10-28 08:52:40,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-10-28 08:52:40,191 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:40,191 INFO L513 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] [2021-10-28 08:52:40,191 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-28 08:52:40,192 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:52:40,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:40,193 INFO L85 PathProgramCache]: Analyzing trace with hash 561717339, now seen corresponding path program 1 times [2021-10-28 08:52:40,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:40,194 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166382370] [2021-10-28 08:52:40,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:40,195 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:40,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:40,300 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-28 08:52:40,300 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:40,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166382370] [2021-10-28 08:52:40,301 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166382370] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:40,301 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:40,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:52:40,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1613238061] [2021-10-28 08:52:40,304 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:52:40,304 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:40,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:52:40,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:40,306 INFO L87 Difference]: Start difference. First operand 115 states and 172 transitions. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:40,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:40,454 INFO L93 Difference]: Finished difference Result 238 states and 360 transitions. [2021-10-28 08:52:40,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:52:40,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 37 [2021-10-28 08:52:40,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:40,458 INFO L225 Difference]: With dead ends: 238 [2021-10-28 08:52:40,458 INFO L226 Difference]: Without dead ends: 133 [2021-10-28 08:52:40,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:40,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2021-10-28 08:52:40,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 130. [2021-10-28 08:52:40,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 130 states, 129 states have (on average 1.4883720930232558) internal successors, (192), 129 states have internal predecessors, (192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:40,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 192 transitions. [2021-10-28 08:52:40,475 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 192 transitions. Word has length 37 [2021-10-28 08:52:40,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:40,476 INFO L470 AbstractCegarLoop]: Abstraction has 130 states and 192 transitions. [2021-10-28 08:52:40,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:40,477 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 192 transitions. [2021-10-28 08:52:40,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-10-28 08:52:40,479 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:40,480 INFO L513 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] [2021-10-28 08:52:40,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-28 08:52:40,480 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:52:40,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:40,481 INFO L85 PathProgramCache]: Analyzing trace with hash 356453796, now seen corresponding path program 1 times [2021-10-28 08:52:40,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:40,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738290038] [2021-10-28 08:52:40,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:40,485 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:40,654 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-10-28 08:52:40,655 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:40,655 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738290038] [2021-10-28 08:52:40,656 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738290038] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:40,657 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:40,657 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:52:40,658 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [949281484] [2021-10-28 08:52:40,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:52:40,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:40,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:52:40,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:40,672 INFO L87 Difference]: Start difference. First operand 130 states and 192 transitions. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:40,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:40,856 INFO L93 Difference]: Finished difference Result 271 states and 406 transitions. [2021-10-28 08:52:40,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:52:40,857 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-10-28 08:52:40,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:40,863 INFO L225 Difference]: With dead ends: 271 [2021-10-28 08:52:40,864 INFO L226 Difference]: Without dead ends: 151 [2021-10-28 08:52:40,869 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-10-28 08:52:40,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 147. [2021-10-28 08:52:40,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 146 states have (on average 1.4657534246575343) internal successors, (214), 146 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:40,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 214 transitions. [2021-10-28 08:52:40,896 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 214 transitions. Word has length 51 [2021-10-28 08:52:40,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:40,897 INFO L470 AbstractCegarLoop]: Abstraction has 147 states and 214 transitions. [2021-10-28 08:52:40,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:40,898 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 214 transitions. [2021-10-28 08:52:40,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-28 08:52:40,909 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:40,910 INFO L513 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] [2021-10-28 08:52:40,910 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-28 08:52:40,910 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:52:40,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:40,911 INFO L85 PathProgramCache]: Analyzing trace with hash -1231505257, now seen corresponding path program 1 times [2021-10-28 08:52:40,911 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:40,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910019775] [2021-10-28 08:52:40,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:40,912 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:41,066 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 08:52:41,067 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:41,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910019775] [2021-10-28 08:52:41,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910019775] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:41,067 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:41,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:52:41,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873781459] [2021-10-28 08:52:41,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:52:41,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:41,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:52:41,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:41,070 INFO L87 Difference]: Start difference. First operand 147 states and 214 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:41,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:41,264 INFO L93 Difference]: Finished difference Result 335 states and 503 transitions. [2021-10-28 08:52:41,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:52:41,265 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-28 08:52:41,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:41,268 INFO L225 Difference]: With dead ends: 335 [2021-10-28 08:52:41,269 INFO L226 Difference]: Without dead ends: 197 [2021-10-28 08:52:41,271 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:41,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-10-28 08:52:41,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 188. [2021-10-28 08:52:41,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 187 states have (on average 1.411764705882353) internal successors, (264), 187 states have internal predecessors, (264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:41,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 264 transitions. [2021-10-28 08:52:41,307 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 264 transitions. Word has length 68 [2021-10-28 08:52:41,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:41,309 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 264 transitions. [2021-10-28 08:52:41,309 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 264 transitions. [2021-10-28 08:52:41,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-10-28 08:52:41,311 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:41,312 INFO L513 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] [2021-10-28 08:52:41,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-28 08:52:41,312 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:52:41,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:41,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1258023705, now seen corresponding path program 1 times [2021-10-28 08:52:41,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:41,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523976839] [2021-10-28 08:52:41,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:41,314 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:41,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-10-28 08:52:41,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:41,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523976839] [2021-10-28 08:52:41,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523976839] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:41,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:41,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:52:41,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010138897] [2021-10-28 08:52:41,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:52:41,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:41,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:52:41,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:41,449 INFO L87 Difference]: Start difference. First operand 188 states and 264 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:41,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:41,583 INFO L93 Difference]: Finished difference Result 391 states and 557 transitions. [2021-10-28 08:52:41,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:52:41,584 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 68 [2021-10-28 08:52:41,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:41,586 INFO L225 Difference]: With dead ends: 391 [2021-10-28 08:52:41,586 INFO L226 Difference]: Without dead ends: 213 [2021-10-28 08:52:41,587 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:41,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-10-28 08:52:41,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 207. [2021-10-28 08:52:41,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 206 states have (on average 1.3980582524271845) internal successors, (288), 206 states have internal predecessors, (288), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:41,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 288 transitions. [2021-10-28 08:52:41,603 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 288 transitions. Word has length 68 [2021-10-28 08:52:41,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:41,603 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 288 transitions. [2021-10-28 08:52:41,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:41,604 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 288 transitions. [2021-10-28 08:52:41,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-10-28 08:52:41,606 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:41,606 INFO L513 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] [2021-10-28 08:52:41,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-28 08:52:41,606 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:52:41,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:41,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1378844437, now seen corresponding path program 1 times [2021-10-28 08:52:41,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:41,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143140483] [2021-10-28 08:52:41,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:41,608 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:41,695 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-10-28 08:52:41,696 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:41,697 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143140483] [2021-10-28 08:52:41,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143140483] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:41,699 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:41,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:52:41,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787381728] [2021-10-28 08:52:41,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:52:41,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:41,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:52:41,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:41,706 INFO L87 Difference]: Start difference. First operand 207 states and 288 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:41,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:41,870 INFO L93 Difference]: Finished difference Result 428 states and 604 transitions. [2021-10-28 08:52:41,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:52:41,874 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 85 [2021-10-28 08:52:41,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:41,881 INFO L225 Difference]: With dead ends: 428 [2021-10-28 08:52:41,882 INFO L226 Difference]: Without dead ends: 231 [2021-10-28 08:52:41,882 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:41,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2021-10-28 08:52:41,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 228. [2021-10-28 08:52:41,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 227 states have (on average 1.3832599118942732) internal successors, (314), 227 states have internal predecessors, (314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:41,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 314 transitions. [2021-10-28 08:52:41,897 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 314 transitions. Word has length 85 [2021-10-28 08:52:41,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:41,899 INFO L470 AbstractCegarLoop]: Abstraction has 228 states and 314 transitions. [2021-10-28 08:52:41,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:41,900 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 314 transitions. [2021-10-28 08:52:41,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-28 08:52:41,903 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:41,904 INFO L513 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] [2021-10-28 08:52:41,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-28 08:52:41,904 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:52:41,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:41,905 INFO L85 PathProgramCache]: Analyzing trace with hash 311084899, now seen corresponding path program 1 times [2021-10-28 08:52:41,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:41,913 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252038208] [2021-10-28 08:52:41,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:41,913 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:41,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:42,020 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 105 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-10-28 08:52:42,021 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:42,021 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252038208] [2021-10-28 08:52:42,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252038208] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:42,021 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:42,022 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:52:42,022 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903149353] [2021-10-28 08:52:42,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:52:42,023 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:42,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:52:42,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:42,024 INFO L87 Difference]: Start difference. First operand 228 states and 314 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:42,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:42,077 INFO L93 Difference]: Finished difference Result 660 states and 910 transitions. [2021-10-28 08:52:42,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:52:42,077 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-28 08:52:42,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:42,081 INFO L225 Difference]: With dead ends: 660 [2021-10-28 08:52:42,082 INFO L226 Difference]: Without dead ends: 442 [2021-10-28 08:52:42,083 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:42,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 442 states. [2021-10-28 08:52:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 442 to 442. [2021-10-28 08:52:42,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 442 states, 441 states have (on average 1.3718820861678005) internal successors, (605), 441 states have internal predecessors, (605), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:42,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 442 states to 442 states and 605 transitions. [2021-10-28 08:52:42,103 INFO L78 Accepts]: Start accepts. Automaton has 442 states and 605 transitions. Word has length 105 [2021-10-28 08:52:42,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:42,103 INFO L470 AbstractCegarLoop]: Abstraction has 442 states and 605 transitions. [2021-10-28 08:52:42,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:42,104 INFO L276 IsEmpty]: Start isEmpty. Operand 442 states and 605 transitions. [2021-10-28 08:52:42,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-28 08:52:42,109 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:42,109 INFO L513 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] [2021-10-28 08:52:42,109 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-28 08:52:42,109 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:52:42,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:42,110 INFO L85 PathProgramCache]: Analyzing trace with hash 990357153, now seen corresponding path program 1 times [2021-10-28 08:52:42,110 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:42,111 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692360888] [2021-10-28 08:52:42,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:42,111 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 88 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2021-10-28 08:52:42,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:42,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692360888] [2021-10-28 08:52:42,202 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692360888] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:42,202 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:42,202 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:52:42,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147678052] [2021-10-28 08:52:42,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:52:42,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:42,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:52:42,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:42,204 INFO L87 Difference]: Start difference. First operand 442 states and 605 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:42,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:42,234 INFO L93 Difference]: Finished difference Result 895 states and 1224 transitions. [2021-10-28 08:52:42,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:52:42,235 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-28 08:52:42,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:42,239 INFO L225 Difference]: With dead ends: 895 [2021-10-28 08:52:42,239 INFO L226 Difference]: Without dead ends: 463 [2021-10-28 08:52:42,240 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:42,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-10-28 08:52:42,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 463. [2021-10-28 08:52:42,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 462 states have (on average 1.367965367965368) internal successors, (632), 462 states have internal predecessors, (632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:42,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 632 transitions. [2021-10-28 08:52:42,258 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 632 transitions. Word has length 105 [2021-10-28 08:52:42,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:42,259 INFO L470 AbstractCegarLoop]: Abstraction has 463 states and 632 transitions. [2021-10-28 08:52:42,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:42,259 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 632 transitions. [2021-10-28 08:52:42,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-10-28 08:52:42,261 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:42,262 INFO L513 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] [2021-10-28 08:52:42,262 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-28 08:52:42,262 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:52:42,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:42,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1829390815, now seen corresponding path program 1 times [2021-10-28 08:52:42,263 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:42,263 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723312259] [2021-10-28 08:52:42,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:42,264 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:42,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-28 08:52:42,319 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-10-28 08:52:42,320 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-28 08:52:42,320 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723312259] [2021-10-28 08:52:42,320 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723312259] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-28 08:52:42,320 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-28 08:52:42,321 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-28 08:52:42,321 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080079172] [2021-10-28 08:52:42,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-28 08:52:42,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-28 08:52:42,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-28 08:52:42,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:42,330 INFO L87 Difference]: Start difference. First operand 463 states and 632 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:42,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-28 08:52:42,360 INFO L93 Difference]: Finished difference Result 943 states and 1285 transitions. [2021-10-28 08:52:42,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-28 08:52:42,361 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 105 [2021-10-28 08:52:42,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-28 08:52:42,365 INFO L225 Difference]: With dead ends: 943 [2021-10-28 08:52:42,366 INFO L226 Difference]: Without dead ends: 490 [2021-10-28 08:52:42,367 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-28 08:52:42,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2021-10-28 08:52:42,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 490. [2021-10-28 08:52:42,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 490 states, 489 states have (on average 1.361963190184049) internal successors, (666), 489 states have internal predecessors, (666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:42,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 490 states to 490 states and 666 transitions. [2021-10-28 08:52:42,386 INFO L78 Accepts]: Start accepts. Automaton has 490 states and 666 transitions. Word has length 105 [2021-10-28 08:52:42,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-28 08:52:42,386 INFO L470 AbstractCegarLoop]: Abstraction has 490 states and 666 transitions. [2021-10-28 08:52:42,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-28 08:52:42,387 INFO L276 IsEmpty]: Start isEmpty. Operand 490 states and 666 transitions. [2021-10-28 08:52:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-10-28 08:52:42,389 INFO L505 BasicCegarLoop]: Found error trace [2021-10-28 08:52:42,389 INFO L513 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] [2021-10-28 08:52:42,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-28 08:52:42,389 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-10-28 08:52:42,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-28 08:52:42,390 INFO L85 PathProgramCache]: Analyzing trace with hash -915547054, now seen corresponding path program 1 times [2021-10-28 08:52:42,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-28 08:52:42,390 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718564361] [2021-10-28 08:52:42,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-28 08:52:42,391 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-28 08:52:42,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:42,436 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-28 08:52:42,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-28 08:52:42,550 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-28 08:52:42,550 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-10-28 08:52:42,552 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-28 08:52:42,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-28 08:52:42,558 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-28 08:52:42,563 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-28 08:52:42,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.10 08:52:42 BoogieIcfgContainer [2021-10-28 08:52:42,745 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-28 08:52:42,746 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-28 08:52:42,746 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-28 08:52:42,746 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-28 08:52:42,747 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:52:39" (3/4) ... [2021-10-28 08:52:42,749 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-10-28 08:52:42,869 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/witness.graphml [2021-10-28 08:52:42,869 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-28 08:52:42,871 INFO L168 Benchmark]: Toolchain (without parser) took 5154.92 ms. Allocated memory was 96.5 MB in the beginning and 136.3 MB in the end (delta: 39.8 MB). Free memory was 59.9 MB in the beginning and 109.9 MB in the end (delta: -50.0 MB). Peak memory consumption was 59.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:42,872 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory is still 77.4 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-28 08:52:42,872 INFO L168 Benchmark]: CACSL2BoogieTranslator took 598.92 ms. Allocated memory is still 96.5 MB. Free memory was 59.7 MB in the beginning and 68.8 MB in the end (delta: -9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:42,873 INFO L168 Benchmark]: Boogie Procedure Inliner took 101.98 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 65.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:42,873 INFO L168 Benchmark]: Boogie Preprocessor took 92.84 ms. Allocated memory is still 96.5 MB. Free memory was 65.9 MB in the beginning and 63.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:42,874 INFO L168 Benchmark]: RCFGBuilder took 1004.09 ms. Allocated memory was 96.5 MB in the beginning and 136.3 MB in the end (delta: 39.8 MB). Free memory was 63.8 MB in the beginning and 105.5 MB in the end (delta: -41.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:42,875 INFO L168 Benchmark]: TraceAbstraction took 3222.35 ms. Allocated memory is still 136.3 MB. Free memory was 105.5 MB in the beginning and 55.1 MB in the end (delta: 50.4 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:42,875 INFO L168 Benchmark]: Witness Printer took 123.43 ms. Allocated memory is still 136.3 MB. Free memory was 55.1 MB in the beginning and 109.9 MB in the end (delta: -54.7 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. [2021-10-28 08:52:42,878 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 96.5 MB. Free memory is still 77.4 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 598.92 ms. Allocated memory is still 96.5 MB. Free memory was 59.7 MB in the beginning and 68.8 MB in the end (delta: -9.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 101.98 ms. Allocated memory is still 96.5 MB. Free memory was 68.8 MB in the beginning and 65.9 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 92.84 ms. Allocated memory is still 96.5 MB. Free memory was 65.9 MB in the beginning and 63.8 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1004.09 ms. Allocated memory was 96.5 MB in the beginning and 136.3 MB in the end (delta: 39.8 MB). Free memory was 63.8 MB in the beginning and 105.5 MB in the end (delta: -41.8 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 3222.35 ms. Allocated memory is still 136.3 MB. Free memory was 105.5 MB in the beginning and 55.1 MB in the end (delta: 50.4 MB). Peak memory consumption was 53.3 MB. Max. memory is 16.1 GB. * Witness Printer took 123.43 ms. Allocated memory is still 136.3 MB. Free memory was 55.1 MB in the beginning and 109.9 MB in the end (delta: -54.7 MB). Peak memory consumption was 13.4 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 560]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L565] int s ; [L569] s = 12292 [L23] int s__info_callback = __VERIFIER_nondet_int() ; [L24] int s__in_handshake = __VERIFIER_nondet_int() ; [L25] int s__state ; [L26] int s__new_session ; [L27] int s__server ; [L28] int s__version = __VERIFIER_nondet_int() ; [L29] int s__type ; [L30] int s__init_num ; [L31] int s__bbio = __VERIFIER_nondet_int() ; [L32] int s__wbio = __VERIFIER_nondet_int() ; [L33] int s__hit = __VERIFIER_nondet_int() ; [L34] int s__rwstate ; [L35] int s__init_buf___0 = __VERIFIER_nondet_int() ; [L36] int s__debug = __VERIFIER_nondet_int() ; [L37] int s__shutdown ; [L38] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L39] int s__ctx__stats__sess_connect_renegotiate = __VERIFIER_nondet_int() ; [L40] int s__ctx__stats__sess_connect = __VERIFIER_nondet_int() ; [L41] int s__ctx__stats__sess_hit = __VERIFIER_nondet_int() ; [L42] int s__ctx__stats__sess_connect_good = __VERIFIER_nondet_int() ; [L43] int s__s3__change_cipher_spec ; [L44] int s__s3__flags = __VERIFIER_nondet_int() ; [L45] int s__s3__delay_buf_pop_ret ; [L46] int s__s3__tmp__cert_req = __VERIFIER_nondet_int() ; [L47] int s__s3__tmp__new_compression = __VERIFIER_nondet_int() ; [L48] int s__s3__tmp__reuse_message = __VERIFIER_nondet_int() ; [L49] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L50] int s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() ; [L51] int s__s3__tmp__next_state___0 ; [L52] int s__s3__tmp__new_compression__id = __VERIFIER_nondet_int() ; [L53] int s__session__cipher ; [L54] int s__session__compress_meth ; [L55] int buf ; [L56] unsigned long tmp ; [L57] unsigned long l ; [L58] int num1 = __VERIFIER_nondet_int() ; [L59] int cb ; [L60] int ret ; [L61] int new_state ; [L62] int state ; [L63] int skip ; [L64] int tmp___0 ; [L65] int tmp___1 = __VERIFIER_nondet_int() ; [L66] int tmp___2 = __VERIFIER_nondet_int() ; [L67] int tmp___3 = __VERIFIER_nondet_int() ; [L68] int tmp___4 = __VERIFIER_nondet_int() ; [L69] int tmp___5 = __VERIFIER_nondet_int() ; [L70] int tmp___6 = __VERIFIER_nondet_int() ; [L71] int tmp___7 = __VERIFIER_nondet_int() ; [L72] int tmp___8 = __VERIFIER_nondet_int() ; [L73] int tmp___9 = __VERIFIER_nondet_int() ; [L74] int blastFlag ; [L75] int __cil_tmp55 ; [L76] unsigned long __cil_tmp56 ; [L77] long __cil_tmp57 ; [L78] long __cil_tmp58 ; [L79] long __cil_tmp59 ; [L80] long __cil_tmp60 ; [L81] long __cil_tmp61 ; [L82] long __cil_tmp62 ; [L83] long __cil_tmp63 ; [L84] long __cil_tmp64 ; [L85] long __cil_tmp65 ; [L89] s__state = initial_state [L90] blastFlag = 0 [L91] tmp = __VERIFIER_nondet_int() [L92] cb = 0 [L93] ret = -1 [L94] skip = 0 [L95] tmp___0 = 0 [L96] COND TRUE s__info_callback != 0 [L97] cb = s__info_callback [L103] s__in_handshake ++ [L104] COND FALSE !(tmp___1 + 12288) [L110] COND TRUE 1 [L112] state = s__state [L113] COND TRUE s__state == 12292 [L215] s__new_session = 1 [L216] s__state = 4096 [L217] s__ctx__stats__sess_connect_renegotiate ++ [L222] s__server = 0 [L223] COND TRUE cb != 0 [L227] __cil_tmp55 = s__version + 65280 [L228] COND FALSE !(__cil_tmp55 != 768) [L233] s__type = 4096 [L234] COND FALSE !(s__init_buf___0 == 0) [L246] COND FALSE !(! tmp___4) [L250] COND FALSE !(! tmp___5) [L254] s__state = 4368 [L255] s__ctx__stats__sess_connect ++ [L256] s__init_num = 0 [L532] COND FALSE !(! s__s3__tmp__reuse_message) [L549] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND TRUE s__state == 4368 [L260] s__shutdown = 0 [L261] ret = __VERIFIER_nondet_int() [L262] COND TRUE blastFlag == 0 [L263] blastFlag = 1 [L265] COND FALSE !(ret <= 0) [L268] s__state = 4384 [L269] s__init_num = 0 [L270] COND TRUE s__bbio != s__wbio [L532] COND FALSE !(! s__s3__tmp__reuse_message) [L549] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND TRUE s__state == 4384 [L276] ret = __VERIFIER_nondet_int() [L277] COND TRUE blastFlag == 1 [L278] blastFlag = 2 [L280] COND FALSE !(ret <= 0) [L283] COND FALSE !(\read(s__hit)) [L286] s__state = 4400 [L288] s__init_num = 0 [L532] COND FALSE !(! s__s3__tmp__reuse_message) [L549] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND FALSE !(s__state == 4384) [L137] COND FALSE !(s__state == 4385) [L140] COND TRUE s__state == 4400 [L293] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L294] COND FALSE !(__cil_tmp56 + 256UL) [L297] ret = __VERIFIER_nondet_int() [L298] COND TRUE blastFlag == 2 [L299] blastFlag = 3 [L305] COND FALSE !(ret <= 0) [L310] s__state = 4416 [L311] s__init_num = 0 [L532] COND FALSE !(! s__s3__tmp__reuse_message) [L549] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND FALSE !(s__state == 4384) [L137] COND FALSE !(s__state == 4385) [L140] COND FALSE !(s__state == 4400) [L143] COND FALSE !(s__state == 4401) [L146] COND TRUE s__state == 4416 [L315] ret = __VERIFIER_nondet_int() [L316] COND TRUE blastFlag == 3 [L317] blastFlag = 4 [L319] COND FALSE !(ret <= 0) [L322] s__state = 4432 [L323] s__init_num = 0 [L324] COND FALSE !(! tmp___6) [L532] COND FALSE !(! s__s3__tmp__reuse_message) [L549] skip = 0 [L110] COND TRUE 1 [L112] state = s__state [L113] COND FALSE !(s__state == 12292) [L116] COND FALSE !(s__state == 16384) [L119] COND FALSE !(s__state == 4096) [L122] COND FALSE !(s__state == 20480) [L125] COND FALSE !(s__state == 4099) [L128] COND FALSE !(s__state == 4368) [L131] COND FALSE !(s__state == 4369) [L134] COND FALSE !(s__state == 4384) [L137] COND FALSE !(s__state == 4385) [L140] COND FALSE !(s__state == 4400) [L143] COND FALSE !(s__state == 4401) [L146] COND FALSE !(s__state == 4416) [L149] COND FALSE !(s__state == 4417) [L152] COND TRUE s__state == 4432 [L331] ret = __VERIFIER_nondet_int() [L332] COND TRUE blastFlag == 4 [L560] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 128 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.9s, OverallIterations: 10, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 1631 SDtfs, 274 SDslu, 970 SDs, 0 SdLazy, 641 SolverSat, 78 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s 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, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 25 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 755 NumberOfCodeBlocks, 755 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 639 ConstructedInterpolants, 0 QuantifiedInterpolants, 957 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! [2021-10-28 08:52:42,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_21255aa7-c4b3-4b0b-866e-88ac4607ca15/bin/uautomizer-UnR33cPsHg/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...