./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 77ee66abd2a03836cba1056e8b8f081ca3f237e1 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --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 77ee66abd2a03836cba1056e8b8f081ca3f237e1 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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-wip.dd.seqcomp-5fbdf5b [2021-08-29 03:23:09,771 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-29 03:23:09,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-29 03:23:09,802 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-29 03:23:09,802 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-29 03:23:09,803 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-29 03:23:09,804 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-29 03:23:09,806 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-29 03:23:09,807 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-29 03:23:09,807 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-29 03:23:09,808 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-29 03:23:09,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-29 03:23:09,814 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-29 03:23:09,817 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-29 03:23:09,818 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-29 03:23:09,820 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-29 03:23:09,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-29 03:23:09,825 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-29 03:23:09,826 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-29 03:23:09,829 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-29 03:23:09,833 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-29 03:23:09,834 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-29 03:23:09,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-29 03:23:09,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-29 03:23:09,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-29 03:23:09,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 03:23:09,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 03:23:09,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 03:23:09,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 03:23:09,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 03:23:09,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 03:23:09,845 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 03:23:09,846 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 03:23:09,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 03:23:09,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 03:23:09,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 03:23:09,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 03:23:09,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 03:23:09,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 03:23:09,849 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 03:23:09,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 03:23:09,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-08-29 03:23:09,966 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 03:23:09,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 03:23:09,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 03:23:09,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 03:23:09,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 03:23:09,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 03:23:09,968 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 03:23:09,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 03:23:09,968 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 03:23:09,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-29 03:23:09,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 03:23:09,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 03:23:09,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 03:23:09,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 03:23:09,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 03:23:09,969 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 03:23:09,969 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 03:23:09,969 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 03:23:09,969 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 03:23:09,969 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 03:23:09,969 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 03:23:09,969 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 03:23:09,969 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:23:09,970 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 03:23:09,970 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 03:23:09,970 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 03:23:09,970 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-29 03:23:09,970 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-29 03:23:09,970 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 03:23:09,970 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 03:23:09,970 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:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77ee66abd2a03836cba1056e8b8f081ca3f237e1 [2021-08-29 03:23:10,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 03:23:10,263 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 03:23:10,265 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 03:23:10,267 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 03:23:10,268 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 03:23:10,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2021-08-29 03:23:10,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/897b2f2a5/fc5faec4bf41414b8ea2fb89f16e4cfd/FLAGec68fe670 [2021-08-29 03:23:10,812 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 03:23:10,814 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2021-08-29 03:23:10,846 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/897b2f2a5/fc5faec4bf41414b8ea2fb89f16e4cfd/FLAGec68fe670 [2021-08-29 03:23:11,140 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/897b2f2a5/fc5faec4bf41414b8ea2fb89f16e4cfd [2021-08-29 03:23:11,142 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 03:23:11,143 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 03:23:11,144 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 03:23:11,144 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 03:23:11,147 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 03:23:11,147 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:23:11" (1/1) ... [2021-08-29 03:23:11,148 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c1d406 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:11, skipping insertion in model container [2021-08-29 03:23:11,148 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:23:11" (1/1) ... [2021-08-29 03:23:11,158 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 03:23:11,198 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 03:23:11,542 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c[71733,71746] [2021-08-29 03:23:11,557 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:23:11,565 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 03:23:11,632 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c[71733,71746] [2021-08-29 03:23:11,640 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:23:11,654 INFO L208 MainTranslator]: Completed translation [2021-08-29 03:23:11,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:11 WrapperNode [2021-08-29 03:23:11,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 03:23:11,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 03:23:11,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 03:23:11,658 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 03:23:11,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:11" (1/1) ... [2021-08-29 03:23:11,690 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:11" (1/1) ... [2021-08-29 03:23:11,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 03:23:11,721 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 03:23:11,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 03:23:11,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 03:23:11,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:11" (1/1) ... [2021-08-29 03:23:11,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:11" (1/1) ... [2021-08-29 03:23:11,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:11" (1/1) ... [2021-08-29 03:23:11,743 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:11" (1/1) ... [2021-08-29 03:23:11,786 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:11" (1/1) ... [2021-08-29 03:23:11,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:11" (1/1) ... [2021-08-29 03:23:11,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:11" (1/1) ... [2021-08-29 03:23:11,809 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 03:23:11,810 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 03:23:11,810 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 03:23:11,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 03:23:11,811 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:11" (1/1) ... [2021-08-29 03:23:11,835 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:23:11,844 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:23:11,854 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 03:23:11,881 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 03:23:11,899 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-29 03:23:11,899 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 03:23:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-08-29 03:23:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-08-29 03:23:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-29 03:23:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-29 03:23:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-29 03:23:11,900 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 03:23:11,900 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 03:23:12,045 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-29 03:23:12,308 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2021-08-29 03:23:12,308 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2021-08-29 03:23:12,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 03:23:12,313 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-29 03:23:12,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:23:12 BoogieIcfgContainer [2021-08-29 03:23:12,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 03:23:12,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 03:23:12,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 03:23:12,318 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 03:23:12,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 03:23:11" (1/3) ... [2021-08-29 03:23:12,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49fb59a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:23:12, skipping insertion in model container [2021-08-29 03:23:12,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:11" (2/3) ... [2021-08-29 03:23:12,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49fb59a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:23:12, skipping insertion in model container [2021-08-29 03:23:12,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:23:12" (3/3) ... [2021-08-29 03:23:12,320 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-2.c [2021-08-29 03:23:12,323 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 03:23:12,324 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 03:23:12,356 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 03:23:12,361 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 03:23:12,362 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 03:23:12,378 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 143 states have (on average 1.6993006993006994) internal successors, (243), 144 states have internal predecessors, (243), 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) [2021-08-29 03:23:12,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-29 03:23:12,394 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:12,395 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:12,395 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:12,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:12,402 INFO L82 PathProgramCache]: Analyzing trace with hash 522834703, now seen corresponding path program 1 times [2021-08-29 03:23:12,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:12,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631735712] [2021-08-29 03:23:12,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:12,409 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:12,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:12,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:12,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:12,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631735712] [2021-08-29 03:23:12,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631735712] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:12,729 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:12,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:12,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653590739] [2021-08-29 03:23:12,734 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:12,734 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:12,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:12,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:12,759 INFO L87 Difference]: Start difference. First operand has 145 states, 143 states have (on average 1.6993006993006994) internal successors, (243), 144 states have internal predecessors, (243), 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 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-08-29 03:23:13,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:13,545 INFO L93 Difference]: Finished difference Result 317 states and 530 transitions. [2021-08-29 03:23:13,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:13,547 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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 45 [2021-08-29 03:23:13,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:13,553 INFO L225 Difference]: With dead ends: 317 [2021-08-29 03:23:13,553 INFO L226 Difference]: Without dead ends: 160 [2021-08-29 03:23:13,556 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 28.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:13,562 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 572.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.29ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 713.03ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:13,565 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 718 Unknown, 0 Unchecked, 6.29ms Time], IncrementalHoareTripleChecker [9 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 713.03ms Time] [2021-08-29 03:23:13,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-08-29 03:23:13,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 143. [2021-08-29 03:23:13,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.5422535211267605) internal successors, (219), 142 states have internal predecessors, (219), 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) [2021-08-29 03:23:13,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 219 transitions. [2021-08-29 03:23:13,606 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 219 transitions. Word has length 45 [2021-08-29 03:23:13,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:13,609 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 219 transitions. [2021-08-29 03:23:13,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 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) [2021-08-29 03:23:13,610 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 219 transitions. [2021-08-29 03:23:13,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-29 03:23:13,611 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:13,611 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:13,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-08-29 03:23:13,611 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:13,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:13,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1923702817, now seen corresponding path program 1 times [2021-08-29 03:23:13,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:13,612 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814498216] [2021-08-29 03:23:13,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:13,613 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:13,677 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:13,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:13,678 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814498216] [2021-08-29 03:23:13,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814498216] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:13,678 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:13,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:13,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921620254] [2021-08-29 03:23:13,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:13,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:13,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:13,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:13,679 INFO L87 Difference]: Start difference. First operand 143 states and 219 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2021-08-29 03:23:14,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:14,167 INFO L93 Difference]: Finished difference Result 284 states and 429 transitions. [2021-08-29 03:23:14,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:14,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2021-08-29 03:23:14,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:14,170 INFO L225 Difference]: With dead ends: 284 [2021-08-29 03:23:14,170 INFO L226 Difference]: Without dead ends: 160 [2021-08-29 03:23:14,170 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.35ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:14,171 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 382.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.98ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 456.05ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:14,171 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 598 Unknown, 0 Unchecked, 1.98ms Time], IncrementalHoareTripleChecker [8 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 456.05ms Time] [2021-08-29 03:23:14,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2021-08-29 03:23:14,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 143. [2021-08-29 03:23:14,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.5352112676056338) internal successors, (218), 142 states have internal predecessors, (218), 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) [2021-08-29 03:23:14,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 218 transitions. [2021-08-29 03:23:14,178 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 218 transitions. Word has length 58 [2021-08-29 03:23:14,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:14,178 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 218 transitions. [2021-08-29 03:23:14,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 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) [2021-08-29 03:23:14,178 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 218 transitions. [2021-08-29 03:23:14,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-29 03:23:14,179 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:14,179 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:14,180 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-08-29 03:23:14,180 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:14,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:14,180 INFO L82 PathProgramCache]: Analyzing trace with hash -2009873572, now seen corresponding path program 1 times [2021-08-29 03:23:14,181 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:14,181 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537412352] [2021-08-29 03:23:14,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:14,181 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:14,264 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:14,264 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:14,265 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537412352] [2021-08-29 03:23:14,265 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537412352] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:14,266 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:14,266 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:14,266 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762384732] [2021-08-29 03:23:14,266 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:14,267 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:14,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:14,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:14,268 INFO L87 Difference]: Start difference. First operand 143 states and 218 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-08-29 03:23:14,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:14,709 INFO L93 Difference]: Finished difference Result 282 states and 426 transitions. [2021-08-29 03:23:14,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:14,709 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2021-08-29 03:23:14,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:14,710 INFO L225 Difference]: With dead ends: 282 [2021-08-29 03:23:14,711 INFO L226 Difference]: Without dead ends: 158 [2021-08-29 03:23:14,711 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.23ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:14,712 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 349.96ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.80ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 421.95ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:14,712 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 597 Unknown, 0 Unchecked, 1.80ms Time], IncrementalHoareTripleChecker [7 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 421.95ms Time] [2021-08-29 03:23:14,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2021-08-29 03:23:14,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 143. [2021-08-29 03:23:14,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.528169014084507) internal successors, (217), 142 states have internal predecessors, (217), 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) [2021-08-29 03:23:14,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 217 transitions. [2021-08-29 03:23:14,718 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 217 transitions. Word has length 59 [2021-08-29 03:23:14,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:14,718 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 217 transitions. [2021-08-29 03:23:14,718 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-08-29 03:23:14,718 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 217 transitions. [2021-08-29 03:23:14,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2021-08-29 03:23:14,720 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:14,720 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:14,720 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-08-29 03:23:14,720 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:14,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:14,721 INFO L82 PathProgramCache]: Analyzing trace with hash 1439655328, now seen corresponding path program 1 times [2021-08-29 03:23:14,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:14,721 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568524979] [2021-08-29 03:23:14,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:14,721 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:14,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:14,776 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:14,776 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:14,781 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568524979] [2021-08-29 03:23:14,782 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568524979] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:14,782 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:14,782 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:14,782 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522542781] [2021-08-29 03:23:14,782 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:14,783 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:14,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:14,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:14,783 INFO L87 Difference]: Start difference. First operand 143 states and 217 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-08-29 03:23:15,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:15,209 INFO L93 Difference]: Finished difference Result 281 states and 424 transitions. [2021-08-29 03:23:15,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:15,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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 59 [2021-08-29 03:23:15,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:15,210 INFO L225 Difference]: With dead ends: 281 [2021-08-29 03:23:15,210 INFO L226 Difference]: Without dead ends: 157 [2021-08-29 03:23:15,211 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.67ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:15,211 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 328.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.03ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 404.42ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:15,212 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 597 Unknown, 0 Unchecked, 2.03ms Time], IncrementalHoareTripleChecker [7 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 404.42ms Time] [2021-08-29 03:23:15,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2021-08-29 03:23:15,215 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 143. [2021-08-29 03:23:15,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.5211267605633803) internal successors, (216), 142 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) [2021-08-29 03:23:15,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 216 transitions. [2021-08-29 03:23:15,217 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 216 transitions. Word has length 59 [2021-08-29 03:23:15,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:15,218 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 216 transitions. [2021-08-29 03:23:15,218 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 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) [2021-08-29 03:23:15,218 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 216 transitions. [2021-08-29 03:23:15,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-29 03:23:15,219 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:15,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:15,220 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-08-29 03:23:15,220 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:15,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:15,220 INFO L82 PathProgramCache]: Analyzing trace with hash 1630534542, now seen corresponding path program 1 times [2021-08-29 03:23:15,220 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:15,221 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824276253] [2021-08-29 03:23:15,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:15,221 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:15,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:15,275 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:15,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824276253] [2021-08-29 03:23:15,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824276253] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:15,276 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:15,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:15,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143577106] [2021-08-29 03:23:15,276 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:15,276 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:15,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:15,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:15,277 INFO L87 Difference]: Start difference. First operand 143 states and 216 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-08-29 03:23:15,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:15,698 INFO L93 Difference]: Finished difference Result 280 states and 422 transitions. [2021-08-29 03:23:15,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:15,701 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2021-08-29 03:23:15,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:15,702 INFO L225 Difference]: With dead ends: 280 [2021-08-29 03:23:15,702 INFO L226 Difference]: Without dead ends: 156 [2021-08-29 03:23:15,702 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.79ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:15,703 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 333.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.71ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 401.92ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:15,703 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 596 Unknown, 0 Unchecked, 1.71ms Time], IncrementalHoareTripleChecker [6 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 401.92ms Time] [2021-08-29 03:23:15,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-29 03:23:15,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2021-08-29 03:23:15,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.5140845070422535) internal successors, (215), 142 states have internal predecessors, (215), 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) [2021-08-29 03:23:15,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 215 transitions. [2021-08-29 03:23:15,708 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 215 transitions. Word has length 60 [2021-08-29 03:23:15,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:15,708 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 215 transitions. [2021-08-29 03:23:15,708 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-08-29 03:23:15,708 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 215 transitions. [2021-08-29 03:23:15,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-08-29 03:23:15,709 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:15,709 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:15,709 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-08-29 03:23:15,709 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:15,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:15,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1839064698, now seen corresponding path program 1 times [2021-08-29 03:23:15,710 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:15,710 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629667637] [2021-08-29 03:23:15,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:15,710 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:15,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:15,750 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:15,750 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629667637] [2021-08-29 03:23:15,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629667637] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:15,750 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:15,751 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:15,751 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379003619] [2021-08-29 03:23:15,751 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:15,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:15,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:15,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:15,752 INFO L87 Difference]: Start difference. First operand 143 states and 215 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-08-29 03:23:16,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:16,149 INFO L93 Difference]: Finished difference Result 280 states and 421 transitions. [2021-08-29 03:23:16,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:16,149 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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 60 [2021-08-29 03:23:16,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:16,150 INFO L225 Difference]: With dead ends: 280 [2021-08-29 03:23:16,150 INFO L226 Difference]: Without dead ends: 156 [2021-08-29 03:23:16,150 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:16,151 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 323.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.54ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 380.53ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:16,151 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 596 Unknown, 0 Unchecked, 1.54ms Time], IncrementalHoareTripleChecker [6 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 380.53ms Time] [2021-08-29 03:23:16,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-29 03:23:16,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2021-08-29 03:23:16,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.5070422535211268) internal successors, (214), 142 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) [2021-08-29 03:23:16,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 214 transitions. [2021-08-29 03:23:16,155 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 214 transitions. Word has length 60 [2021-08-29 03:23:16,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:16,155 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 214 transitions. [2021-08-29 03:23:16,156 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 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) [2021-08-29 03:23:16,156 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 214 transitions. [2021-08-29 03:23:16,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-08-29 03:23:16,156 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:16,157 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:16,157 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-08-29 03:23:16,157 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:16,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:16,157 INFO L82 PathProgramCache]: Analyzing trace with hash 476213239, now seen corresponding path program 1 times [2021-08-29 03:23:16,158 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:16,158 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870484970] [2021-08-29 03:23:16,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:16,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:16,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:16,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:16,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:16,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870484970] [2021-08-29 03:23:16,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870484970] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:16,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:16,216 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:16,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475594264] [2021-08-29 03:23:16,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:16,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:16,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:16,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:16,218 INFO L87 Difference]: Start difference. First operand 143 states and 214 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-08-29 03:23:16,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:16,614 INFO L93 Difference]: Finished difference Result 280 states and 420 transitions. [2021-08-29 03:23:16,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:16,614 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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 61 [2021-08-29 03:23:16,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:16,615 INFO L225 Difference]: With dead ends: 280 [2021-08-29 03:23:16,615 INFO L226 Difference]: Without dead ends: 156 [2021-08-29 03:23:16,616 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 13.24ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:16,616 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 22 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 311.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 374.44ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:16,616 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 0 Invalid, 596 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [6 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 374.44ms Time] [2021-08-29 03:23:16,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-29 03:23:16,621 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2021-08-29 03:23:16,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.5) internal successors, (213), 142 states have internal predecessors, (213), 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) [2021-08-29 03:23:16,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 213 transitions. [2021-08-29 03:23:16,621 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 213 transitions. Word has length 61 [2021-08-29 03:23:16,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:16,622 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 213 transitions. [2021-08-29 03:23:16,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 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) [2021-08-29 03:23:16,622 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 213 transitions. [2021-08-29 03:23:16,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-29 03:23:16,622 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:16,622 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:16,622 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-08-29 03:23:16,623 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:16,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:16,623 INFO L82 PathProgramCache]: Analyzing trace with hash -25209675, now seen corresponding path program 1 times [2021-08-29 03:23:16,623 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:16,623 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777682372] [2021-08-29 03:23:16,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:16,623 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:16,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:16,662 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:16,662 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:16,662 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777682372] [2021-08-29 03:23:16,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777682372] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:16,662 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:16,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:16,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162299871] [2021-08-29 03:23:16,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:16,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:16,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:16,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:16,663 INFO L87 Difference]: Start difference. First operand 143 states and 213 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2021-08-29 03:23:17,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:17,026 INFO L93 Difference]: Finished difference Result 280 states and 419 transitions. [2021-08-29 03:23:17,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:17,027 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2021-08-29 03:23:17,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:17,027 INFO L225 Difference]: With dead ends: 280 [2021-08-29 03:23:17,027 INFO L226 Difference]: Without dead ends: 156 [2021-08-29 03:23:17,028 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.66ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:17,028 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 20 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 287.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.52ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 346.78ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:17,028 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 0 Invalid, 596 Unknown, 0 Unchecked, 1.52ms Time], IncrementalHoareTripleChecker [6 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 346.78ms Time] [2021-08-29 03:23:17,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2021-08-29 03:23:17,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2021-08-29 03:23:17,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 142 states have (on average 1.4929577464788732) internal successors, (212), 142 states have internal predecessors, (212), 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) [2021-08-29 03:23:17,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 212 transitions. [2021-08-29 03:23:17,031 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 212 transitions. Word has length 62 [2021-08-29 03:23:17,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:17,032 INFO L470 AbstractCegarLoop]: Abstraction has 143 states and 212 transitions. [2021-08-29 03:23:17,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2021-08-29 03:23:17,032 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 212 transitions. [2021-08-29 03:23:17,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-08-29 03:23:17,032 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:17,033 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:17,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-08-29 03:23:17,033 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:17,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:17,033 INFO L82 PathProgramCache]: Analyzing trace with hash 1383513241, now seen corresponding path program 1 times [2021-08-29 03:23:17,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:17,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452682219] [2021-08-29 03:23:17,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:17,033 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:17,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:17,092 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:17,094 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:17,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452682219] [2021-08-29 03:23:17,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452682219] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:17,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:17,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:17,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266086940] [2021-08-29 03:23:17,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:17,095 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:17,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:17,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:17,096 INFO L87 Difference]: Start difference. First operand 143 states and 212 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2021-08-29 03:23:17,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:17,503 INFO L93 Difference]: Finished difference Result 310 states and 467 transitions. [2021-08-29 03:23:17,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:17,503 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2021-08-29 03:23:17,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:17,504 INFO L225 Difference]: With dead ends: 310 [2021-08-29 03:23:17,504 INFO L226 Difference]: Without dead ends: 186 [2021-08-29 03:23:17,505 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.34ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:17,505 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 313.73ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.99ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 388.32ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:17,505 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 668 Unknown, 0 Unchecked, 1.99ms Time], IncrementalHoareTripleChecker [9 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 388.32ms Time] [2021-08-29 03:23:17,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-08-29 03:23:17,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 165. [2021-08-29 03:23:17,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.524390243902439) internal successors, (250), 164 states have internal predecessors, (250), 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) [2021-08-29 03:23:17,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 250 transitions. [2021-08-29 03:23:17,508 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 250 transitions. Word has length 62 [2021-08-29 03:23:17,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:17,509 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 250 transitions. [2021-08-29 03:23:17,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2021-08-29 03:23:17,509 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 250 transitions. [2021-08-29 03:23:17,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-29 03:23:17,509 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:17,509 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:17,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-08-29 03:23:17,510 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:17,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:17,510 INFO L82 PathProgramCache]: Analyzing trace with hash 407848530, now seen corresponding path program 1 times [2021-08-29 03:23:17,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:17,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288151035] [2021-08-29 03:23:17,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:17,510 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:17,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:17,575 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:17,576 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:17,576 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288151035] [2021-08-29 03:23:17,576 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288151035] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:17,576 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:17,576 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:17,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628125786] [2021-08-29 03:23:17,577 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:17,577 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:17,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:17,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:17,577 INFO L87 Difference]: Start difference. First operand 165 states and 250 transitions. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2021-08-29 03:23:17,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:17,952 INFO L93 Difference]: Finished difference Result 314 states and 481 transitions. [2021-08-29 03:23:17,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:17,953 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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 63 [2021-08-29 03:23:17,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:17,954 INFO L225 Difference]: With dead ends: 314 [2021-08-29 03:23:17,954 INFO L226 Difference]: Without dead ends: 168 [2021-08-29 03:23:17,954 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.29ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:17,955 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 11 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 590 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 289.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.16ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 590 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 358.72ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:17,955 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 0 Invalid, 592 Unknown, 0 Unchecked, 1.16ms Time], IncrementalHoareTripleChecker [2 Valid, 590 Invalid, 0 Unknown, 0 Unchecked, 358.72ms Time] [2021-08-29 03:23:17,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-08-29 03:23:17,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 165. [2021-08-29 03:23:17,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5182926829268293) internal successors, (249), 164 states have internal predecessors, (249), 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) [2021-08-29 03:23:17,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 249 transitions. [2021-08-29 03:23:17,959 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 249 transitions. Word has length 63 [2021-08-29 03:23:17,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:17,960 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 249 transitions. [2021-08-29 03:23:17,960 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 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) [2021-08-29 03:23:17,960 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 249 transitions. [2021-08-29 03:23:17,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-08-29 03:23:17,961 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:17,961 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:17,961 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-08-29 03:23:17,961 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:17,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:17,962 INFO L82 PathProgramCache]: Analyzing trace with hash -1281685867, now seen corresponding path program 1 times [2021-08-29 03:23:17,962 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:17,962 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967069956] [2021-08-29 03:23:17,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:17,962 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:17,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:18,000 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:18,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:18,000 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967069956] [2021-08-29 03:23:18,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967069956] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:18,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:18,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:18,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006712386] [2021-08-29 03:23:18,001 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:18,002 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:18,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:18,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:18,002 INFO L87 Difference]: Start difference. First operand 165 states and 249 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2021-08-29 03:23:18,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:18,429 INFO L93 Difference]: Finished difference Result 332 states and 503 transitions. [2021-08-29 03:23:18,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:18,430 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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 75 [2021-08-29 03:23:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:18,431 INFO L225 Difference]: With dead ends: 332 [2021-08-29 03:23:18,431 INFO L226 Difference]: Without dead ends: 186 [2021-08-29 03:23:18,431 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:18,431 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 281 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 346.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 637 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.44ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 409.95ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:18,432 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 637 Unknown, 0 Unchecked, 1.44ms Time], IncrementalHoareTripleChecker [9 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 409.95ms Time] [2021-08-29 03:23:18,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-08-29 03:23:18,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 165. [2021-08-29 03:23:18,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5121951219512195) internal successors, (248), 164 states have internal predecessors, (248), 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) [2021-08-29 03:23:18,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 248 transitions. [2021-08-29 03:23:18,435 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 248 transitions. Word has length 75 [2021-08-29 03:23:18,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:18,436 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 248 transitions. [2021-08-29 03:23:18,436 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 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) [2021-08-29 03:23:18,436 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 248 transitions. [2021-08-29 03:23:18,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-08-29 03:23:18,436 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:18,437 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:18,437 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-08-29 03:23:18,437 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:18,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:18,437 INFO L82 PathProgramCache]: Analyzing trace with hash 712782694, now seen corresponding path program 1 times [2021-08-29 03:23:18,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:18,438 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287712206] [2021-08-29 03:23:18,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:18,438 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:18,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:18,468 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:18,468 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:18,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287712206] [2021-08-29 03:23:18,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287712206] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:18,469 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:18,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:18,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516977105] [2021-08-29 03:23:18,469 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:18,469 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:18,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:18,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:18,470 INFO L87 Difference]: Start difference. First operand 165 states and 248 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-08-29 03:23:18,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:18,826 INFO L93 Difference]: Finished difference Result 330 states and 499 transitions. [2021-08-29 03:23:18,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:18,826 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 76 [2021-08-29 03:23:18,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:18,827 INFO L225 Difference]: With dead ends: 330 [2021-08-29 03:23:18,827 INFO L226 Difference]: Without dead ends: 184 [2021-08-29 03:23:18,827 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.45ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:18,828 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 270.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.33ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 340.20ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:18,828 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 636 Unknown, 0 Unchecked, 1.33ms Time], IncrementalHoareTripleChecker [8 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 340.20ms Time] [2021-08-29 03:23:18,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-08-29 03:23:18,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 165. [2021-08-29 03:23:18,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5060975609756098) internal successors, (247), 164 states have internal predecessors, (247), 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) [2021-08-29 03:23:18,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 247 transitions. [2021-08-29 03:23:18,831 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 247 transitions. Word has length 76 [2021-08-29 03:23:18,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:18,831 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 247 transitions. [2021-08-29 03:23:18,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-08-29 03:23:18,832 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 247 transitions. [2021-08-29 03:23:18,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-08-29 03:23:18,832 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:18,832 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:18,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-08-29 03:23:18,832 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:18,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:18,833 INFO L82 PathProgramCache]: Analyzing trace with hash -132655702, now seen corresponding path program 1 times [2021-08-29 03:23:18,833 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:18,833 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492511863] [2021-08-29 03:23:18,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:18,833 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:18,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:18,866 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:18,866 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:18,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492511863] [2021-08-29 03:23:18,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492511863] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:18,866 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:18,866 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:18,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946125025] [2021-08-29 03:23:18,867 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:18,867 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:18,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:18,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:18,867 INFO L87 Difference]: Start difference. First operand 165 states and 247 transitions. Second operand has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-08-29 03:23:19,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:19,233 INFO L93 Difference]: Finished difference Result 329 states and 496 transitions. [2021-08-29 03:23:19,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:19,234 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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 76 [2021-08-29 03:23:19,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:19,235 INFO L225 Difference]: With dead ends: 329 [2021-08-29 03:23:19,235 INFO L226 Difference]: Without dead ends: 183 [2021-08-29 03:23:19,235 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:19,236 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 290.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.25ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 350.30ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:19,236 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 636 Unknown, 0 Unchecked, 1.25ms Time], IncrementalHoareTripleChecker [8 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 350.30ms Time] [2021-08-29 03:23:19,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2021-08-29 03:23:19,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 165. [2021-08-29 03:23:19,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.5) internal successors, (246), 164 states have internal predecessors, (246), 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) [2021-08-29 03:23:19,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 246 transitions. [2021-08-29 03:23:19,239 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 246 transitions. Word has length 76 [2021-08-29 03:23:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:19,239 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 246 transitions. [2021-08-29 03:23:19,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.0) internal successors, (76), 4 states have internal predecessors, (76), 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) [2021-08-29 03:23:19,239 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 246 transitions. [2021-08-29 03:23:19,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-08-29 03:23:19,239 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:19,240 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:19,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-08-29 03:23:19,240 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:19,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:19,240 INFO L82 PathProgramCache]: Analyzing trace with hash 133532868, now seen corresponding path program 1 times [2021-08-29 03:23:19,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:19,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630627478] [2021-08-29 03:23:19,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:19,240 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:19,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:19,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:19,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630627478] [2021-08-29 03:23:19,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630627478] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:19,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:19,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:19,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881476951] [2021-08-29 03:23:19,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:19,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:19,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:19,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:19,274 INFO L87 Difference]: Start difference. First operand 165 states and 246 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-08-29 03:23:19,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:19,662 INFO L93 Difference]: Finished difference Result 328 states and 493 transitions. [2021-08-29 03:23:19,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:19,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 77 [2021-08-29 03:23:19,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:19,663 INFO L225 Difference]: With dead ends: 328 [2021-08-29 03:23:19,663 INFO L226 Difference]: Without dead ends: 182 [2021-08-29 03:23:19,664 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.22ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:19,664 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.14ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 371.15ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:19,664 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 635 Unknown, 0 Unchecked, 1.14ms Time], IncrementalHoareTripleChecker [7 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 371.15ms Time] [2021-08-29 03:23:19,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-08-29 03:23:19,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2021-08-29 03:23:19,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.4939024390243902) internal successors, (245), 164 states have internal predecessors, (245), 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) [2021-08-29 03:23:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 245 transitions. [2021-08-29 03:23:19,668 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 245 transitions. Word has length 77 [2021-08-29 03:23:19,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:19,668 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 245 transitions. [2021-08-29 03:23:19,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-08-29 03:23:19,668 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 245 transitions. [2021-08-29 03:23:19,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-08-29 03:23:19,668 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:19,669 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:19,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-08-29 03:23:19,669 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:19,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:19,669 INFO L82 PathProgramCache]: Analyzing trace with hash 342063024, now seen corresponding path program 1 times [2021-08-29 03:23:19,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:19,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [715950425] [2021-08-29 03:23:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:19,670 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:19,703 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:19,704 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:19,704 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [715950425] [2021-08-29 03:23:19,704 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [715950425] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:19,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:19,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:19,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997437686] [2021-08-29 03:23:19,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:19,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:19,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:19,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:19,705 INFO L87 Difference]: Start difference. First operand 165 states and 245 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-08-29 03:23:20,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:20,076 INFO L93 Difference]: Finished difference Result 328 states and 491 transitions. [2021-08-29 03:23:20,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:20,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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 77 [2021-08-29 03:23:20,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:20,077 INFO L225 Difference]: With dead ends: 328 [2021-08-29 03:23:20,077 INFO L226 Difference]: Without dead ends: 182 [2021-08-29 03:23:20,078 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.94ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:20,078 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 294.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.12ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 354.43ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:20,078 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 635 Unknown, 0 Unchecked, 1.12ms Time], IncrementalHoareTripleChecker [7 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 354.43ms Time] [2021-08-29 03:23:20,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-08-29 03:23:20,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2021-08-29 03:23:20,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.4878048780487805) internal successors, (244), 164 states have internal predecessors, (244), 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) [2021-08-29 03:23:20,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 244 transitions. [2021-08-29 03:23:20,081 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 244 transitions. Word has length 77 [2021-08-29 03:23:20,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:20,081 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 244 transitions. [2021-08-29 03:23:20,081 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 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) [2021-08-29 03:23:20,081 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 244 transitions. [2021-08-29 03:23:20,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-08-29 03:23:20,082 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:20,082 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:20,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-08-29 03:23:20,082 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:20,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:20,082 INFO L82 PathProgramCache]: Analyzing trace with hash 1313801601, now seen corresponding path program 1 times [2021-08-29 03:23:20,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:20,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991697141] [2021-08-29 03:23:20,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:20,083 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:20,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:20,109 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:20,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:20,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991697141] [2021-08-29 03:23:20,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991697141] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:20,110 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:20,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:20,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321484843] [2021-08-29 03:23:20,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:20,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:20,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:20,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:20,111 INFO L87 Difference]: Start difference. First operand 165 states and 244 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-08-29 03:23:20,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:20,474 INFO L93 Difference]: Finished difference Result 328 states and 489 transitions. [2021-08-29 03:23:20,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:20,474 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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 78 [2021-08-29 03:23:20,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:20,475 INFO L225 Difference]: With dead ends: 328 [2021-08-29 03:23:20,475 INFO L226 Difference]: Without dead ends: 182 [2021-08-29 03:23:20,476 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.48ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:20,476 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 37 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 288.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.09ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 347.95ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:20,476 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 0 Invalid, 635 Unknown, 0 Unchecked, 1.09ms Time], IncrementalHoareTripleChecker [7 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 347.95ms Time] [2021-08-29 03:23:20,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-08-29 03:23:20,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2021-08-29 03:23:20,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.4817073170731707) internal successors, (243), 164 states have internal predecessors, (243), 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) [2021-08-29 03:23:20,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 243 transitions. [2021-08-29 03:23:20,481 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 243 transitions. Word has length 78 [2021-08-29 03:23:20,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:20,482 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 243 transitions. [2021-08-29 03:23:20,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 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) [2021-08-29 03:23:20,482 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 243 transitions. [2021-08-29 03:23:20,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-08-29 03:23:20,483 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:20,483 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:20,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-08-29 03:23:20,483 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:20,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:20,484 INFO L82 PathProgramCache]: Analyzing trace with hash 170225771, now seen corresponding path program 1 times [2021-08-29 03:23:20,484 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:20,484 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436335460] [2021-08-29 03:23:20,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:20,484 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:20,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:20,525 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:20,525 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436335460] [2021-08-29 03:23:20,525 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436335460] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:20,525 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:20,525 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:20,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175230951] [2021-08-29 03:23:20,526 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:20,526 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:20,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:20,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:20,526 INFO L87 Difference]: Start difference. First operand 165 states and 243 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2021-08-29 03:23:20,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:20,892 INFO L93 Difference]: Finished difference Result 328 states and 487 transitions. [2021-08-29 03:23:20,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:20,892 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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 79 [2021-08-29 03:23:20,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:20,893 INFO L225 Difference]: With dead ends: 328 [2021-08-29 03:23:20,893 INFO L226 Difference]: Without dead ends: 182 [2021-08-29 03:23:20,894 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.76ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:20,894 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 287.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.11ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 349.17ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:20,894 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 635 Unknown, 0 Unchecked, 1.11ms Time], IncrementalHoareTripleChecker [7 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 349.17ms Time] [2021-08-29 03:23:20,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-08-29 03:23:20,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2021-08-29 03:23:20,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.475609756097561) internal successors, (242), 164 states have internal predecessors, (242), 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) [2021-08-29 03:23:20,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 242 transitions. [2021-08-29 03:23:20,898 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 242 transitions. Word has length 79 [2021-08-29 03:23:20,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:20,898 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 242 transitions. [2021-08-29 03:23:20,898 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 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) [2021-08-29 03:23:20,899 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 242 transitions. [2021-08-29 03:23:20,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-08-29 03:23:20,899 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:20,899 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:20,899 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-08-29 03:23:20,900 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:20,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:20,900 INFO L82 PathProgramCache]: Analyzing trace with hash -2123587236, now seen corresponding path program 1 times [2021-08-29 03:23:20,900 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:20,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053401574] [2021-08-29 03:23:20,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:20,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:20,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:20,940 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:20,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:20,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053401574] [2021-08-29 03:23:20,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053401574] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:20,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:20,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:20,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324439320] [2021-08-29 03:23:20,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:20,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:20,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:20,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:20,942 INFO L87 Difference]: Start difference. First operand 165 states and 242 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-08-29 03:23:21,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:21,331 INFO L93 Difference]: Finished difference Result 318 states and 472 transitions. [2021-08-29 03:23:21,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:21,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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 80 [2021-08-29 03:23:21,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:21,332 INFO L225 Difference]: With dead ends: 318 [2021-08-29 03:23:21,332 INFO L226 Difference]: Without dead ends: 172 [2021-08-29 03:23:21,332 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.55ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:21,333 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 309.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.16ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 371.70ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:21,333 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 631 Unknown, 0 Unchecked, 1.16ms Time], IncrementalHoareTripleChecker [3 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 371.70ms Time] [2021-08-29 03:23:21,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2021-08-29 03:23:21,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 165. [2021-08-29 03:23:21,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 164 states have (on average 1.4695121951219512) internal successors, (241), 164 states have internal predecessors, (241), 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) [2021-08-29 03:23:21,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 241 transitions. [2021-08-29 03:23:21,336 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 241 transitions. Word has length 80 [2021-08-29 03:23:21,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:21,336 INFO L470 AbstractCegarLoop]: Abstraction has 165 states and 241 transitions. [2021-08-29 03:23:21,336 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 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) [2021-08-29 03:23:21,336 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 241 transitions. [2021-08-29 03:23:21,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-08-29 03:23:21,337 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:21,337 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:21,337 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-08-29 03:23:21,337 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:21,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:21,338 INFO L82 PathProgramCache]: Analyzing trace with hash -1575477095, now seen corresponding path program 1 times [2021-08-29 03:23:21,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:21,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208827357] [2021-08-29 03:23:21,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:21,338 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:21,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:21,380 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:21,381 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:21,381 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208827357] [2021-08-29 03:23:21,381 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208827357] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:21,381 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:21,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:21,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501339501] [2021-08-29 03:23:21,382 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:21,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:21,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:21,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:21,383 INFO L87 Difference]: Start difference. First operand 165 states and 241 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2021-08-29 03:23:21,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:21,878 INFO L93 Difference]: Finished difference Result 408 states and 610 transitions. [2021-08-29 03:23:21,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:21,882 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 84 [2021-08-29 03:23:21,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:21,884 INFO L225 Difference]: With dead ends: 408 [2021-08-29 03:23:21,884 INFO L226 Difference]: Without dead ends: 262 [2021-08-29 03:23:21,884 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.09ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:21,885 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 79 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 376.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.83ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 474.15ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:21,885 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 0 Invalid, 694 Unknown, 0 Unchecked, 1.83ms Time], IncrementalHoareTripleChecker [14 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 474.15ms Time] [2021-08-29 03:23:21,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-08-29 03:23:21,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 208. [2021-08-29 03:23:21,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 207 states have (on average 1.541062801932367) internal successors, (319), 207 states have internal predecessors, (319), 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) [2021-08-29 03:23:21,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 319 transitions. [2021-08-29 03:23:21,891 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 319 transitions. Word has length 84 [2021-08-29 03:23:21,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:21,891 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 319 transitions. [2021-08-29 03:23:21,891 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2021-08-29 03:23:21,891 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 319 transitions. [2021-08-29 03:23:21,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-08-29 03:23:21,892 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:21,892 INFO L513 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:21,892 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-08-29 03:23:21,893 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:21,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:21,893 INFO L82 PathProgramCache]: Analyzing trace with hash 1822096923, now seen corresponding path program 1 times [2021-08-29 03:23:21,893 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:21,893 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554534556] [2021-08-29 03:23:21,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:21,894 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:21,938 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:21,938 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:21,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554534556] [2021-08-29 03:23:21,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554534556] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:21,939 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:21,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:21,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621878972] [2021-08-29 03:23:21,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:21,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:21,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:21,940 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:21,940 INFO L87 Difference]: Start difference. First operand 208 states and 319 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2021-08-29 03:23:22,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:22,398 INFO L93 Difference]: Finished difference Result 446 states and 691 transitions. [2021-08-29 03:23:22,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:22,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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 84 [2021-08-29 03:23:22,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:22,400 INFO L225 Difference]: With dead ends: 446 [2021-08-29 03:23:22,400 INFO L226 Difference]: Without dead ends: 257 [2021-08-29 03:23:22,400 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.57ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:22,400 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 40 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 361.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.76ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 440.64ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:22,401 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 0 Invalid, 764 Unknown, 0 Unchecked, 1.76ms Time], IncrementalHoareTripleChecker [9 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 440.64ms Time] [2021-08-29 03:23:22,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-08-29 03:23:22,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 232. [2021-08-29 03:23:22,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.5627705627705628) internal successors, (361), 231 states have internal predecessors, (361), 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) [2021-08-29 03:23:22,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 361 transitions. [2021-08-29 03:23:22,405 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 361 transitions. Word has length 84 [2021-08-29 03:23:22,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:22,405 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 361 transitions. [2021-08-29 03:23:22,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 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) [2021-08-29 03:23:22,405 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 361 transitions. [2021-08-29 03:23:22,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-08-29 03:23:22,406 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:22,406 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:22,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-08-29 03:23:22,406 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:22,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:22,407 INFO L82 PathProgramCache]: Analyzing trace with hash 878453397, now seen corresponding path program 1 times [2021-08-29 03:23:22,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:22,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739140307] [2021-08-29 03:23:22,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:22,407 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:22,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:22,439 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:22,439 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:22,439 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739140307] [2021-08-29 03:23:22,439 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739140307] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:22,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:22,440 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:22,440 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [75324324] [2021-08-29 03:23:22,440 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:22,440 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:22,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:22,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:22,441 INFO L87 Difference]: Start difference. First operand 232 states and 361 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2021-08-29 03:23:22,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:22,910 INFO L93 Difference]: Finished difference Result 499 states and 771 transitions. [2021-08-29 03:23:22,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:22,910 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 97 [2021-08-29 03:23:22,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:22,911 INFO L225 Difference]: With dead ends: 499 [2021-08-29 03:23:22,911 INFO L226 Difference]: Without dead ends: 286 [2021-08-29 03:23:22,912 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:22,912 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 363.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.67ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 450.10ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:22,912 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 698 Unknown, 0 Unchecked, 1.67ms Time], IncrementalHoareTripleChecker [14 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 450.10ms Time] [2021-08-29 03:23:22,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2021-08-29 03:23:22,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 232. [2021-08-29 03:23:22,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.5584415584415585) internal successors, (360), 231 states have internal predecessors, (360), 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) [2021-08-29 03:23:22,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 360 transitions. [2021-08-29 03:23:22,918 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 360 transitions. Word has length 97 [2021-08-29 03:23:22,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:22,918 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 360 transitions. [2021-08-29 03:23:22,919 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2021-08-29 03:23:22,919 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 360 transitions. [2021-08-29 03:23:22,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-08-29 03:23:22,920 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:22,920 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:22,920 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-08-29 03:23:22,920 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:22,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:22,921 INFO L82 PathProgramCache]: Analyzing trace with hash 919128147, now seen corresponding path program 1 times [2021-08-29 03:23:22,921 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:22,921 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216520361] [2021-08-29 03:23:22,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:22,921 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:22,956 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:22,956 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:22,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216520361] [2021-08-29 03:23:22,957 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216520361] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:22,957 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:22,957 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:22,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438088496] [2021-08-29 03:23:22,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:22,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:22,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:22,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:22,958 INFO L87 Difference]: Start difference. First operand 232 states and 360 transitions. Second operand has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2021-08-29 03:23:23,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:23,397 INFO L93 Difference]: Finished difference Result 470 states and 730 transitions. [2021-08-29 03:23:23,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:23,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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 97 [2021-08-29 03:23:23,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:23,400 INFO L225 Difference]: With dead ends: 470 [2021-08-29 03:23:23,400 INFO L226 Difference]: Without dead ends: 257 [2021-08-29 03:23:23,401 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.76ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:23,401 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 335 mSDsCounter, 0 mSdLazyCounter, 753 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 351.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.28ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 423.35ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:23,401 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 762 Unknown, 0 Unchecked, 1.28ms Time], IncrementalHoareTripleChecker [9 Valid, 753 Invalid, 0 Unknown, 0 Unchecked, 423.35ms Time] [2021-08-29 03:23:23,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2021-08-29 03:23:23,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 232. [2021-08-29 03:23:23,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.5541125541125542) internal successors, (359), 231 states have internal predecessors, (359), 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) [2021-08-29 03:23:23,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 359 transitions. [2021-08-29 03:23:23,405 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 359 transitions. Word has length 97 [2021-08-29 03:23:23,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:23,405 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 359 transitions. [2021-08-29 03:23:23,406 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.75) internal successors, (87), 4 states have internal predecessors, (87), 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) [2021-08-29 03:23:23,406 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 359 transitions. [2021-08-29 03:23:23,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-08-29 03:23:23,406 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:23,407 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:23,407 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-08-29 03:23:23,407 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:23,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:23,407 INFO L82 PathProgramCache]: Analyzing trace with hash -1042376858, now seen corresponding path program 1 times [2021-08-29 03:23:23,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:23,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714074637] [2021-08-29 03:23:23,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:23,408 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:23,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:23,446 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:23,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:23,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714074637] [2021-08-29 03:23:23,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714074637] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:23,447 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:23,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:23,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [240458555] [2021-08-29 03:23:23,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:23,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:23,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:23,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:23,448 INFO L87 Difference]: Start difference. First operand 232 states and 359 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-08-29 03:23:23,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:23,883 INFO L93 Difference]: Finished difference Result 497 states and 765 transitions. [2021-08-29 03:23:23,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:23,884 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 98 [2021-08-29 03:23:23,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:23,885 INFO L225 Difference]: With dead ends: 497 [2021-08-29 03:23:23,885 INFO L226 Difference]: Without dead ends: 284 [2021-08-29 03:23:23,885 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.68ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:23,886 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 101 mSDsluCounter, 261 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 334.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.30ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 415.73ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:23,886 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 0 Invalid, 692 Unknown, 0 Unchecked, 1.30ms Time], IncrementalHoareTripleChecker [13 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 415.73ms Time] [2021-08-29 03:23:23,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2021-08-29 03:23:23,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 232. [2021-08-29 03:23:23,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.5497835497835497) internal successors, (358), 231 states have internal predecessors, (358), 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) [2021-08-29 03:23:23,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 358 transitions. [2021-08-29 03:23:23,890 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 358 transitions. Word has length 98 [2021-08-29 03:23:23,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:23,890 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 358 transitions. [2021-08-29 03:23:23,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-08-29 03:23:23,890 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 358 transitions. [2021-08-29 03:23:23,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-08-29 03:23:23,891 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:23,891 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:23,891 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-08-29 03:23:23,891 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:23,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:23,892 INFO L82 PathProgramCache]: Analyzing trace with hash -1887815254, now seen corresponding path program 1 times [2021-08-29 03:23:23,892 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:23,892 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397338330] [2021-08-29 03:23:23,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:23,892 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:23,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:23,922 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:23,923 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:23,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397338330] [2021-08-29 03:23:23,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397338330] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:23,923 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:23,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:23,923 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877677138] [2021-08-29 03:23:23,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:23,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:23,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:23,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:23,924 INFO L87 Difference]: Start difference. First operand 232 states and 358 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-08-29 03:23:24,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:24,375 INFO L93 Difference]: Finished difference Result 496 states and 762 transitions. [2021-08-29 03:23:24,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:24,376 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 98 [2021-08-29 03:23:24,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:24,377 INFO L225 Difference]: With dead ends: 496 [2021-08-29 03:23:24,377 INFO L226 Difference]: Without dead ends: 283 [2021-08-29 03:23:24,377 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.41ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:24,377 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 99 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 360.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.42ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 431.82ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:24,378 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 0 Invalid, 692 Unknown, 0 Unchecked, 1.42ms Time], IncrementalHoareTripleChecker [13 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 431.82ms Time] [2021-08-29 03:23:24,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2021-08-29 03:23:24,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 232. [2021-08-29 03:23:24,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.5454545454545454) internal successors, (357), 231 states have internal predecessors, (357), 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) [2021-08-29 03:23:24,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 357 transitions. [2021-08-29 03:23:24,381 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 357 transitions. Word has length 98 [2021-08-29 03:23:24,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:24,382 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 357 transitions. [2021-08-29 03:23:24,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-08-29 03:23:24,382 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 357 transitions. [2021-08-29 03:23:24,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-08-29 03:23:24,382 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:24,382 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:24,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-08-29 03:23:24,383 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:24,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:24,383 INFO L82 PathProgramCache]: Analyzing trace with hash 218540392, now seen corresponding path program 1 times [2021-08-29 03:23:24,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:24,383 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027941191] [2021-08-29 03:23:24,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:24,383 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:24,422 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:24,423 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:24,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027941191] [2021-08-29 03:23:24,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027941191] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:24,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:24,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:24,423 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221645290] [2021-08-29 03:23:24,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:24,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:24,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:24,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:24,424 INFO L87 Difference]: Start difference. First operand 232 states and 357 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-08-29 03:23:24,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:24,875 INFO L93 Difference]: Finished difference Result 468 states and 722 transitions. [2021-08-29 03:23:24,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:24,876 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 98 [2021-08-29 03:23:24,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:24,877 INFO L225 Difference]: With dead ends: 468 [2021-08-29 03:23:24,877 INFO L226 Difference]: Without dead ends: 255 [2021-08-29 03:23:24,877 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.52ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:24,878 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 352.23ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.25ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 434.04ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:24,878 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 749 Unknown, 0 Unchecked, 1.25ms Time], IncrementalHoareTripleChecker [8 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 434.04ms Time] [2021-08-29 03:23:24,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-08-29 03:23:24,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 232. [2021-08-29 03:23:24,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.5411255411255411) internal successors, (356), 231 states have internal predecessors, (356), 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) [2021-08-29 03:23:24,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 356 transitions. [2021-08-29 03:23:24,882 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 356 transitions. Word has length 98 [2021-08-29 03:23:24,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:24,882 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 356 transitions. [2021-08-29 03:23:24,882 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-08-29 03:23:24,883 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 356 transitions. [2021-08-29 03:23:24,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-08-29 03:23:24,883 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:24,883 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:24,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-08-29 03:23:24,884 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:24,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:24,884 INFO L82 PathProgramCache]: Analyzing trace with hash -626898004, now seen corresponding path program 1 times [2021-08-29 03:23:24,884 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:24,884 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [519256782] [2021-08-29 03:23:24,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:24,885 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:24,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:24,925 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:24,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:24,926 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [519256782] [2021-08-29 03:23:24,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [519256782] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:24,926 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:24,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:24,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809469152] [2021-08-29 03:23:24,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:24,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:24,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:24,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:24,928 INFO L87 Difference]: Start difference. First operand 232 states and 356 transitions. Second operand has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-08-29 03:23:25,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:25,348 INFO L93 Difference]: Finished difference Result 467 states and 719 transitions. [2021-08-29 03:23:25,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:25,348 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 98 [2021-08-29 03:23:25,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:25,349 INFO L225 Difference]: With dead ends: 467 [2021-08-29 03:23:25,349 INFO L226 Difference]: Without dead ends: 254 [2021-08-29 03:23:25,353 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 9.98ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:25,353 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 330.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.99ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 404.39ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:25,355 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 749 Unknown, 0 Unchecked, 0.99ms Time], IncrementalHoareTripleChecker [8 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 404.39ms Time] [2021-08-29 03:23:25,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2021-08-29 03:23:25,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 232. [2021-08-29 03:23:25,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.5367965367965368) internal successors, (355), 231 states have internal predecessors, (355), 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) [2021-08-29 03:23:25,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 355 transitions. [2021-08-29 03:23:25,364 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 355 transitions. Word has length 98 [2021-08-29 03:23:25,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:25,364 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 355 transitions. [2021-08-29 03:23:25,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-08-29 03:23:25,365 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 355 transitions. [2021-08-29 03:23:25,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-08-29 03:23:25,365 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:25,366 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:25,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-08-29 03:23:25,366 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:25,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:25,367 INFO L82 PathProgramCache]: Analyzing trace with hash 1558161604, now seen corresponding path program 1 times [2021-08-29 03:23:25,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:25,367 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600846341] [2021-08-29 03:23:25,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:25,367 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:25,434 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:25,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:25,434 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600846341] [2021-08-29 03:23:25,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600846341] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:25,434 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:25,434 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:25,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564818709] [2021-08-29 03:23:25,435 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:25,435 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:25,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:25,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:25,436 INFO L87 Difference]: Start difference. First operand 232 states and 355 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-08-29 03:23:25,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:25,868 INFO L93 Difference]: Finished difference Result 495 states and 755 transitions. [2021-08-29 03:23:25,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:25,869 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 99 [2021-08-29 03:23:25,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:25,870 INFO L225 Difference]: With dead ends: 495 [2021-08-29 03:23:25,870 INFO L226 Difference]: Without dead ends: 282 [2021-08-29 03:23:25,870 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.75ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:25,871 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 263 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 345.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.12ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 416.05ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:25,871 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 691 Unknown, 0 Unchecked, 1.12ms Time], IncrementalHoareTripleChecker [12 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 416.05ms Time] [2021-08-29 03:23:25,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2021-08-29 03:23:25,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2021-08-29 03:23:25,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 231 states have (on average 1.5324675324675325) internal successors, (354), 231 states have internal predecessors, (354), 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) [2021-08-29 03:23:25,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 354 transitions. [2021-08-29 03:23:25,874 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 354 transitions. Word has length 99 [2021-08-29 03:23:25,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:25,874 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 354 transitions. [2021-08-29 03:23:25,875 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-08-29 03:23:25,875 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 354 transitions. [2021-08-29 03:23:25,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-08-29 03:23:25,875 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:25,875 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:25,876 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-08-29 03:23:25,876 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:25,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:25,877 INFO L82 PathProgramCache]: Analyzing trace with hash 1766691760, now seen corresponding path program 1 times [2021-08-29 03:23:25,877 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:25,877 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697292255] [2021-08-29 03:23:25,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:25,878 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:25,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-08-29 03:23:25,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:25,940 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697292255] [2021-08-29 03:23:25,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697292255] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:25,941 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:25,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-08-29 03:23:25,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354135111] [2021-08-29 03:23:25,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-29 03:23:25,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:25,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-29 03:23:25,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:25,942 INFO L87 Difference]: Start difference. First operand 232 states and 354 transitions. Second operand has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-08-29 03:23:26,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:26,307 INFO L93 Difference]: Finished difference Result 466 states and 716 transitions. [2021-08-29 03:23:26,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-29 03:23:26,307 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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 99 [2021-08-29 03:23:26,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:26,308 INFO L225 Difference]: With dead ends: 466 [2021-08-29 03:23:26,308 INFO L226 Difference]: Without dead ends: 253 [2021-08-29 03:23:26,308 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 16.50ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-08-29 03:23:26,309 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 144 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 286.09ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.14ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 345.82ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:26,309 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [144 Valid, 0 Invalid, 675 Unknown, 0 Unchecked, 1.14ms Time], IncrementalHoareTripleChecker [42 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 345.82ms Time] [2021-08-29 03:23:26,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2021-08-29 03:23:26,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2021-08-29 03:23:26,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5139442231075697) internal successors, (380), 251 states have internal predecessors, (380), 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) [2021-08-29 03:23:26,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 380 transitions. [2021-08-29 03:23:26,314 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 380 transitions. Word has length 99 [2021-08-29 03:23:26,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:26,314 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 380 transitions. [2021-08-29 03:23:26,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 17.0) internal successors, (85), 5 states have internal predecessors, (85), 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) [2021-08-29 03:23:26,314 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 380 transitions. [2021-08-29 03:23:26,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-08-29 03:23:26,315 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:26,315 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:26,315 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-08-29 03:23:26,315 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:26,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:26,316 INFO L82 PathProgramCache]: Analyzing trace with hash -907239660, now seen corresponding path program 1 times [2021-08-29 03:23:26,316 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:26,316 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553847379] [2021-08-29 03:23:26,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:26,316 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:26,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:26,348 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:26,348 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:26,348 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [553847379] [2021-08-29 03:23:26,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [553847379] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:26,348 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:26,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:26,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [696048773] [2021-08-29 03:23:26,349 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:26,349 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:26,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:26,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:26,350 INFO L87 Difference]: Start difference. First operand 252 states and 380 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2021-08-29 03:23:26,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:26,794 INFO L93 Difference]: Finished difference Result 535 states and 804 transitions. [2021-08-29 03:23:26,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:26,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 100 [2021-08-29 03:23:26,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:26,795 INFO L225 Difference]: With dead ends: 535 [2021-08-29 03:23:26,795 INFO L226 Difference]: Without dead ends: 302 [2021-08-29 03:23:26,796 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.43ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:26,796 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 103 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 354.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.09ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 426.40ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:26,796 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 0 Invalid, 716 Unknown, 0 Unchecked, 1.09ms Time], IncrementalHoareTripleChecker [12 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 426.40ms Time] [2021-08-29 03:23:26,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-08-29 03:23:26,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 252. [2021-08-29 03:23:26,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5099601593625498) internal successors, (379), 251 states have internal predecessors, (379), 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) [2021-08-29 03:23:26,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 379 transitions. [2021-08-29 03:23:26,801 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 379 transitions. Word has length 100 [2021-08-29 03:23:26,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:26,801 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 379 transitions. [2021-08-29 03:23:26,801 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2021-08-29 03:23:26,801 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 379 transitions. [2021-08-29 03:23:26,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-08-29 03:23:26,802 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:26,802 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:26,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-08-29 03:23:26,802 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:26,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:26,803 INFO L82 PathProgramCache]: Analyzing trace with hash -346539882, now seen corresponding path program 1 times [2021-08-29 03:23:26,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:26,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650133235] [2021-08-29 03:23:26,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:26,803 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:26,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:26,834 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:26,834 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:26,834 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650133235] [2021-08-29 03:23:26,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650133235] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:26,834 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:26,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:26,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128602484] [2021-08-29 03:23:26,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:26,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:26,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:26,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:26,835 INFO L87 Difference]: Start difference. First operand 252 states and 379 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2021-08-29 03:23:27,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:27,266 INFO L93 Difference]: Finished difference Result 506 states and 763 transitions. [2021-08-29 03:23:27,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:27,266 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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 100 [2021-08-29 03:23:27,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:27,267 INFO L225 Difference]: With dead ends: 506 [2021-08-29 03:23:27,267 INFO L226 Difference]: Without dead ends: 273 [2021-08-29 03:23:27,268 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.74ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:27,268 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 47 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 732 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 326.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.98ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 413.66ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:27,268 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 0 Invalid, 739 Unknown, 0 Unchecked, 0.98ms Time], IncrementalHoareTripleChecker [7 Valid, 732 Invalid, 0 Unknown, 0 Unchecked, 413.66ms Time] [2021-08-29 03:23:27,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-08-29 03:23:27,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 252. [2021-08-29 03:23:27,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.5059760956175299) internal successors, (378), 251 states have internal predecessors, (378), 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) [2021-08-29 03:23:27,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 378 transitions. [2021-08-29 03:23:27,273 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 378 transitions. Word has length 100 [2021-08-29 03:23:27,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:27,273 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 378 transitions. [2021-08-29 03:23:27,273 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 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) [2021-08-29 03:23:27,274 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 378 transitions. [2021-08-29 03:23:27,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-08-29 03:23:27,274 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:27,274 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:27,275 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-08-29 03:23:27,275 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:27,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:27,275 INFO L82 PathProgramCache]: Analyzing trace with hash 1206682467, now seen corresponding path program 1 times [2021-08-29 03:23:27,275 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:27,275 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136023181] [2021-08-29 03:23:27,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:27,276 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:27,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:27,312 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:27,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:27,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136023181] [2021-08-29 03:23:27,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136023181] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:27,313 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:27,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:27,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294532929] [2021-08-29 03:23:27,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:27,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:27,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:27,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:27,314 INFO L87 Difference]: Start difference. First operand 252 states and 378 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-08-29 03:23:27,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:27,758 INFO L93 Difference]: Finished difference Result 535 states and 800 transitions. [2021-08-29 03:23:27,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:27,765 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2021-08-29 03:23:27,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:27,766 INFO L225 Difference]: With dead ends: 535 [2021-08-29 03:23:27,766 INFO L226 Difference]: Without dead ends: 302 [2021-08-29 03:23:27,767 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.39ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:27,767 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 101 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 350.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 425.49ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:27,767 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 0 Invalid, 716 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [12 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 425.49ms Time] [2021-08-29 03:23:27,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-08-29 03:23:27,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 252. [2021-08-29 03:23:27,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.50199203187251) internal successors, (377), 251 states have internal predecessors, (377), 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) [2021-08-29 03:23:27,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 377 transitions. [2021-08-29 03:23:27,772 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 377 transitions. Word has length 101 [2021-08-29 03:23:27,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:27,772 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 377 transitions. [2021-08-29 03:23:27,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-08-29 03:23:27,772 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 377 transitions. [2021-08-29 03:23:27,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-08-29 03:23:27,773 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:27,773 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:27,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-08-29 03:23:27,773 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:27,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:27,774 INFO L82 PathProgramCache]: Analyzing trace with hash 1408506401, now seen corresponding path program 1 times [2021-08-29 03:23:27,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:27,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171718269] [2021-08-29 03:23:27,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:27,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:27,804 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:27,805 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:27,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171718269] [2021-08-29 03:23:27,805 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171718269] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:27,805 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:27,805 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:27,806 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874295822] [2021-08-29 03:23:27,806 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:27,806 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:27,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:27,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:27,806 INFO L87 Difference]: Start difference. First operand 252 states and 377 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-08-29 03:23:28,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:28,200 INFO L93 Difference]: Finished difference Result 506 states and 759 transitions. [2021-08-29 03:23:28,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:28,200 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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 101 [2021-08-29 03:23:28,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:28,201 INFO L225 Difference]: With dead ends: 506 [2021-08-29 03:23:28,201 INFO L226 Difference]: Without dead ends: 273 [2021-08-29 03:23:28,202 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.15ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:28,202 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 730 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 307.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.96ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 730 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 376.62ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:28,202 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 737 Unknown, 0 Unchecked, 0.96ms Time], IncrementalHoareTripleChecker [7 Valid, 730 Invalid, 0 Unknown, 0 Unchecked, 376.62ms Time] [2021-08-29 03:23:28,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-08-29 03:23:28,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 252. [2021-08-29 03:23:28,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.49800796812749) internal successors, (376), 251 states have internal predecessors, (376), 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) [2021-08-29 03:23:28,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 376 transitions. [2021-08-29 03:23:28,206 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 376 transitions. Word has length 101 [2021-08-29 03:23:28,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:28,207 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 376 transitions. [2021-08-29 03:23:28,207 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 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) [2021-08-29 03:23:28,207 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 376 transitions. [2021-08-29 03:23:28,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-08-29 03:23:28,207 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:28,208 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:28,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-08-29 03:23:28,208 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:28,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:28,208 INFO L82 PathProgramCache]: Analyzing trace with hash -610222663, now seen corresponding path program 1 times [2021-08-29 03:23:28,208 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:28,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279425199] [2021-08-29 03:23:28,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:28,209 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:28,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:28,252 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:28,252 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:28,252 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279425199] [2021-08-29 03:23:28,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279425199] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:28,252 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:28,253 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:28,253 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577165639] [2021-08-29 03:23:28,253 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:28,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:28,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:28,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:28,254 INFO L87 Difference]: Start difference. First operand 252 states and 376 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2021-08-29 03:23:28,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:28,694 INFO L93 Difference]: Finished difference Result 535 states and 796 transitions. [2021-08-29 03:23:28,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:28,694 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 102 [2021-08-29 03:23:28,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:28,695 INFO L225 Difference]: With dead ends: 535 [2021-08-29 03:23:28,695 INFO L226 Difference]: Without dead ends: 302 [2021-08-29 03:23:28,696 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.13ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:28,696 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 99 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 704 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 341.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.12ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 704 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 422.36ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:28,696 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 0 Invalid, 716 Unknown, 0 Unchecked, 1.12ms Time], IncrementalHoareTripleChecker [12 Valid, 704 Invalid, 0 Unknown, 0 Unchecked, 422.36ms Time] [2021-08-29 03:23:28,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-08-29 03:23:28,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 252. [2021-08-29 03:23:28,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.4940239043824701) internal successors, (375), 251 states have internal predecessors, (375), 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) [2021-08-29 03:23:28,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 375 transitions. [2021-08-29 03:23:28,701 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 375 transitions. Word has length 102 [2021-08-29 03:23:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:28,701 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 375 transitions. [2021-08-29 03:23:28,701 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2021-08-29 03:23:28,701 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 375 transitions. [2021-08-29 03:23:28,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-08-29 03:23:28,702 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:28,702 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:28,702 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-08-29 03:23:28,703 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:28,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:28,703 INFO L82 PathProgramCache]: Analyzing trace with hash 1351351995, now seen corresponding path program 1 times [2021-08-29 03:23:28,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:28,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691087683] [2021-08-29 03:23:28,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:28,703 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:28,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:28,736 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:28,736 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:28,736 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691087683] [2021-08-29 03:23:28,736 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691087683] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:28,736 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:28,736 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:28,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612266050] [2021-08-29 03:23:28,737 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:28,737 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:28,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:28,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:28,738 INFO L87 Difference]: Start difference. First operand 252 states and 375 transitions. Second operand has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2021-08-29 03:23:29,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:29,170 INFO L93 Difference]: Finished difference Result 506 states and 755 transitions. [2021-08-29 03:23:29,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:29,170 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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 102 [2021-08-29 03:23:29,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:29,171 INFO L225 Difference]: With dead ends: 506 [2021-08-29 03:23:29,171 INFO L226 Difference]: Without dead ends: 273 [2021-08-29 03:23:29,171 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.23ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:29,172 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 728 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 323.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 735 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.91ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 728 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 415.60ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:29,172 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 735 Unknown, 0 Unchecked, 0.91ms Time], IncrementalHoareTripleChecker [7 Valid, 728 Invalid, 0 Unknown, 0 Unchecked, 415.60ms Time] [2021-08-29 03:23:29,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2021-08-29 03:23:29,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 252. [2021-08-29 03:23:29,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.4900398406374502) internal successors, (374), 251 states have internal predecessors, (374), 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) [2021-08-29 03:23:29,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 374 transitions. [2021-08-29 03:23:29,176 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 374 transitions. Word has length 102 [2021-08-29 03:23:29,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:29,176 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 374 transitions. [2021-08-29 03:23:29,176 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.0) internal successors, (92), 4 states have internal predecessors, (92), 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) [2021-08-29 03:23:29,177 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 374 transitions. [2021-08-29 03:23:29,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-08-29 03:23:29,177 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:29,177 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:29,177 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-08-29 03:23:29,178 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:29,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:29,178 INFO L82 PathProgramCache]: Analyzing trace with hash 271278824, now seen corresponding path program 1 times [2021-08-29 03:23:29,178 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:29,178 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77881643] [2021-08-29 03:23:29,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:29,178 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:29,216 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:29,216 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:29,217 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77881643] [2021-08-29 03:23:29,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77881643] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:29,217 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:29,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:29,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286917308] [2021-08-29 03:23:29,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:29,217 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:29,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:29,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:29,218 INFO L87 Difference]: Start difference. First operand 252 states and 374 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2021-08-29 03:23:29,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:29,638 INFO L93 Difference]: Finished difference Result 525 states and 780 transitions. [2021-08-29 03:23:29,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:29,639 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 103 [2021-08-29 03:23:29,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:29,639 INFO L225 Difference]: With dead ends: 525 [2021-08-29 03:23:29,640 INFO L226 Difference]: Without dead ends: 292 [2021-08-29 03:23:29,640 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.36ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:29,640 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 90 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 679 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 322.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.04ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 401.12ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:29,641 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 0 Invalid, 687 Unknown, 0 Unchecked, 1.04ms Time], IncrementalHoareTripleChecker [8 Valid, 679 Invalid, 0 Unknown, 0 Unchecked, 401.12ms Time] [2021-08-29 03:23:29,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-08-29 03:23:29,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 252. [2021-08-29 03:23:29,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.4860557768924303) internal successors, (373), 251 states have internal predecessors, (373), 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) [2021-08-29 03:23:29,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 373 transitions. [2021-08-29 03:23:29,645 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 373 transitions. Word has length 103 [2021-08-29 03:23:29,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:29,646 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 373 transitions. [2021-08-29 03:23:29,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2021-08-29 03:23:29,646 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 373 transitions. [2021-08-29 03:23:29,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-08-29 03:23:29,647 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:29,647 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:29,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-08-29 03:23:29,647 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:29,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:29,648 INFO L82 PathProgramCache]: Analyzing trace with hash 950551078, now seen corresponding path program 1 times [2021-08-29 03:23:29,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:29,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120921508] [2021-08-29 03:23:29,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:29,648 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:29,680 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:29,680 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:29,680 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120921508] [2021-08-29 03:23:29,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120921508] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:29,680 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:29,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:29,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949622760] [2021-08-29 03:23:29,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:29,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:29,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:29,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:29,683 INFO L87 Difference]: Start difference. First operand 252 states and 373 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2021-08-29 03:23:30,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:30,062 INFO L93 Difference]: Finished difference Result 496 states and 739 transitions. [2021-08-29 03:23:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:30,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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 103 [2021-08-29 03:23:30,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:30,063 INFO L225 Difference]: With dead ends: 496 [2021-08-29 03:23:30,063 INFO L226 Difference]: Without dead ends: 263 [2021-08-29 03:23:30,064 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.80ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:30,064 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 34 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 701 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 303.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.82ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 701 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 364.11ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:30,064 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 0 Invalid, 704 Unknown, 0 Unchecked, 0.82ms Time], IncrementalHoareTripleChecker [3 Valid, 701 Invalid, 0 Unknown, 0 Unchecked, 364.11ms Time] [2021-08-29 03:23:30,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2021-08-29 03:23:30,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 252. [2021-08-29 03:23:30,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.4820717131474104) internal successors, (372), 251 states have internal predecessors, (372), 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) [2021-08-29 03:23:30,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 372 transitions. [2021-08-29 03:23:30,069 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 372 transitions. Word has length 103 [2021-08-29 03:23:30,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:30,069 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 372 transitions. [2021-08-29 03:23:30,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 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) [2021-08-29 03:23:30,069 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 372 transitions. [2021-08-29 03:23:30,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-08-29 03:23:30,070 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:30,070 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:30,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-08-29 03:23:30,070 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:30,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:30,071 INFO L82 PathProgramCache]: Analyzing trace with hash -504345715, now seen corresponding path program 1 times [2021-08-29 03:23:30,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:30,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702591841] [2021-08-29 03:23:30,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:30,071 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:30,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:30,102 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:30,102 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:30,102 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702591841] [2021-08-29 03:23:30,102 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702591841] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:30,102 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:30,102 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-08-29 03:23:30,103 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240840228] [2021-08-29 03:23:30,103 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:30,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:30,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:30,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:30,104 INFO L87 Difference]: Start difference. First operand 252 states and 372 transitions. Second operand has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2021-08-29 03:23:30,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:30,569 INFO L93 Difference]: Finished difference Result 525 states and 776 transitions. [2021-08-29 03:23:30,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:30,569 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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 106 [2021-08-29 03:23:30,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:30,570 INFO L225 Difference]: With dead ends: 525 [2021-08-29 03:23:30,570 INFO L226 Difference]: Without dead ends: 292 [2021-08-29 03:23:30,571 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 8.47ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-29 03:23:30,571 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 80 mSDsluCounter, 277 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 345.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 80 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 699 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.05ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 445.97ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:30,571 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [80 Valid, 0 Invalid, 699 Unknown, 0 Unchecked, 1.05ms Time], IncrementalHoareTripleChecker [8 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 445.97ms Time] [2021-08-29 03:23:30,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-08-29 03:23:30,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 252. [2021-08-29 03:23:30,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 1.4780876494023905) internal successors, (371), 251 states have internal predecessors, (371), 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) [2021-08-29 03:23:30,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 371 transitions. [2021-08-29 03:23:30,576 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 371 transitions. Word has length 106 [2021-08-29 03:23:30,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:30,576 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 371 transitions. [2021-08-29 03:23:30,576 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.0) internal successors, (96), 4 states have internal predecessors, (96), 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) [2021-08-29 03:23:30,576 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 371 transitions. [2021-08-29 03:23:30,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-08-29 03:23:30,577 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:30,577 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:30,577 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-08-29 03:23:30,578 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:30,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:30,578 INFO L82 PathProgramCache]: Analyzing trace with hash 2104441743, now seen corresponding path program 1 times [2021-08-29 03:23:30,578 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:30,578 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837367479] [2021-08-29 03:23:30,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:30,579 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:30,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:30,614 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-08-29 03:23:30,614 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:30,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837367479] [2021-08-29 03:23:30,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837367479] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:30,614 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:30,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:23:30,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1804409858] [2021-08-29 03:23:30,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:23:30,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:30,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:23:30,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:23:30,617 INFO L87 Difference]: Start difference. First operand 252 states and 371 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-08-29 03:23:30,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:30,958 INFO L93 Difference]: Finished difference Result 714 states and 1066 transitions. [2021-08-29 03:23:30,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:23:30,958 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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 106 [2021-08-29 03:23:30,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:30,960 INFO L225 Difference]: With dead ends: 714 [2021-08-29 03:23:30,960 INFO L226 Difference]: Without dead ends: 481 [2021-08-29 03:23:30,960 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.21ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:23:30,960 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 133 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 258.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.52ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 323.68ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:30,961 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 0 Invalid, 439 Unknown, 0 Unchecked, 0.52ms Time], IncrementalHoareTripleChecker [5 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 323.68ms Time] [2021-08-29 03:23:30,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-08-29 03:23:30,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2021-08-29 03:23:30,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.48125) internal successors, (711), 480 states have internal predecessors, (711), 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) [2021-08-29 03:23:30,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 711 transitions. [2021-08-29 03:23:30,968 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 711 transitions. Word has length 106 [2021-08-29 03:23:30,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:30,968 INFO L470 AbstractCegarLoop]: Abstraction has 481 states and 711 transitions. [2021-08-29 03:23:30,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 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) [2021-08-29 03:23:30,970 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 711 transitions. [2021-08-29 03:23:30,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-08-29 03:23:30,971 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:30,971 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:30,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-08-29 03:23:30,971 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:30,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:30,972 INFO L82 PathProgramCache]: Analyzing trace with hash 888288017, now seen corresponding path program 1 times [2021-08-29 03:23:30,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:30,972 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123292708] [2021-08-29 03:23:30,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:30,972 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:30,994 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2021-08-29 03:23:30,995 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:30,995 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123292708] [2021-08-29 03:23:30,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123292708] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:30,995 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:30,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:23:30,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002892165] [2021-08-29 03:23:30,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:23:30,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:30,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:23:30,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:23:30,996 INFO L87 Difference]: Start difference. First operand 481 states and 711 transitions. Second operand has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-08-29 03:23:31,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:31,261 INFO L93 Difference]: Finished difference Result 970 states and 1437 transitions. [2021-08-29 03:23:31,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:23:31,262 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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 106 [2021-08-29 03:23:31,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:31,263 INFO L225 Difference]: With dead ends: 970 [2021-08-29 03:23:31,263 INFO L226 Difference]: Without dead ends: 508 [2021-08-29 03:23:31,263 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.08ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:23:31,264 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 15 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 412 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 207.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.42ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 412 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 250.51ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:31,264 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 0 Invalid, 413 Unknown, 0 Unchecked, 0.42ms Time], IncrementalHoareTripleChecker [1 Valid, 412 Invalid, 0 Unknown, 0 Unchecked, 250.51ms Time] [2021-08-29 03:23:31,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-08-29 03:23:31,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2021-08-29 03:23:31,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 1.4714003944773175) internal successors, (746), 507 states have internal predecessors, (746), 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) [2021-08-29 03:23:31,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 746 transitions. [2021-08-29 03:23:31,280 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 746 transitions. Word has length 106 [2021-08-29 03:23:31,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:31,280 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 746 transitions. [2021-08-29 03:23:31,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.333333333333332) internal successors, (88), 3 states have internal predecessors, (88), 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) [2021-08-29 03:23:31,280 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 746 transitions. [2021-08-29 03:23:31,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2021-08-29 03:23:31,281 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:31,281 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:31,281 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-08-29 03:23:31,282 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:31,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:31,282 INFO L82 PathProgramCache]: Analyzing trace with hash 302011795, now seen corresponding path program 1 times [2021-08-29 03:23:31,282 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:31,282 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835926154] [2021-08-29 03:23:31,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:31,282 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:31,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:31,301 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2021-08-29 03:23:31,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:31,301 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835926154] [2021-08-29 03:23:31,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835926154] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:31,302 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:31,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:23:31,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485056234] [2021-08-29 03:23:31,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:23:31,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:31,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:23:31,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:23:31,304 INFO L87 Difference]: Start difference. First operand 508 states and 746 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-08-29 03:23:31,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:31,552 INFO L93 Difference]: Finished difference Result 999 states and 1473 transitions. [2021-08-29 03:23:31,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:23:31,552 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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 106 [2021-08-29 03:23:31,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:31,554 INFO L225 Difference]: With dead ends: 999 [2021-08-29 03:23:31,554 INFO L226 Difference]: Without dead ends: 510 [2021-08-29 03:23:31,554 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:23:31,555 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 4 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 390 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 192.46ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.43ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 233.92ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:31,555 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 0 Invalid, 390 Unknown, 0 Unchecked, 0.43ms Time], IncrementalHoareTripleChecker [0 Valid, 390 Invalid, 0 Unknown, 0 Unchecked, 233.92ms Time] [2021-08-29 03:23:31,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-08-29 03:23:31,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2021-08-29 03:23:31,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 1.469548133595285) internal successors, (748), 509 states have internal predecessors, (748), 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) [2021-08-29 03:23:31,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 748 transitions. [2021-08-29 03:23:31,563 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 748 transitions. Word has length 106 [2021-08-29 03:23:31,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:31,563 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 748 transitions. [2021-08-29 03:23:31,563 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 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) [2021-08-29 03:23:31,563 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 748 transitions. [2021-08-29 03:23:31,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-08-29 03:23:31,564 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:31,564 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:31,564 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-08-29 03:23:31,565 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:31,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:31,565 INFO L82 PathProgramCache]: Analyzing trace with hash 1080065455, now seen corresponding path program 1 times [2021-08-29 03:23:31,565 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:31,565 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [970553830] [2021-08-29 03:23:31,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:31,566 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:31,603 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-08-29 03:23:31,604 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-08-29 03:23:31,604 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [970553830] [2021-08-29 03:23:31,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [970553830] provided 1 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:31,604 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:31,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-08-29 03:23:31,605 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412060565] [2021-08-29 03:23:31,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-29 03:23:31,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-08-29 03:23:31,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-29 03:23:31,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:23:31,607 INFO L87 Difference]: Start difference. First operand 510 states and 748 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-08-29 03:23:32,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:32,020 INFO L93 Difference]: Finished difference Result 999 states and 1472 transitions. [2021-08-29 03:23:32,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-29 03:23:32,021 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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 125 [2021-08-29 03:23:32,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:32,022 INFO L225 Difference]: With dead ends: 999 [2021-08-29 03:23:32,022 INFO L226 Difference]: Without dead ends: 510 [2021-08-29 03:23:32,023 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.16ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-29 03:23:32,023 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 143 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 304.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 573 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.61ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 386.23ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:32,023 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [143 Valid, 0 Invalid, 573 Unknown, 0 Unchecked, 0.61ms Time], IncrementalHoareTripleChecker [4 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 386.23ms Time] [2021-08-29 03:23:32,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2021-08-29 03:23:32,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2021-08-29 03:23:32,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 1.4597249508840864) internal successors, (743), 509 states have internal predecessors, (743), 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) [2021-08-29 03:23:32,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 743 transitions. [2021-08-29 03:23:32,032 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 743 transitions. Word has length 125 [2021-08-29 03:23:32,032 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:32,032 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 743 transitions. [2021-08-29 03:23:32,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 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) [2021-08-29 03:23:32,032 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 743 transitions. [2021-08-29 03:23:32,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-08-29 03:23:32,033 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:32,033 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:32,034 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-08-29 03:23:32,034 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:32,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:32,034 INFO L82 PathProgramCache]: Analyzing trace with hash -877709346, now seen corresponding path program 1 times [2021-08-29 03:23:32,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-29 03:23:32,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980255721] [2021-08-29 03:23:32,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:32,035 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-29 03:23:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 03:23:32,112 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 03:23:32,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 03:23:32,236 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-29 03:23:32,236 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 03:23:32,237 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 03:23:32,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-08-29 03:23:32,245 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 03:23:32,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 03:23:32 BoogieIcfgContainer [2021-08-29 03:23:32,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 03:23:32,350 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 03:23:32,350 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 03:23:32,350 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 03:23:32,351 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:23:12" (3/4) ... [2021-08-29 03:23:32,353 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-29 03:23:32,353 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 03:23:32,353 INFO L158 Benchmark]: Toolchain (without parser) took 21210.08ms. Allocated memory was 58.7MB in the beginning and 134.2MB in the end (delta: 75.5MB). Free memory was 36.0MB in the beginning and 37.7MB in the end (delta: -1.7MB). Peak memory consumption was 73.9MB. Max. memory is 16.1GB. [2021-08-29 03:23:32,353 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 58.7MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 43.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 03:23:32,354 INFO L158 Benchmark]: CACSL2BoogieTranslator took 512.08ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 35.8MB in the beginning and 40.6MB in the end (delta: -4.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2021-08-29 03:23:32,354 INFO L158 Benchmark]: Boogie Procedure Inliner took 63.77ms. Allocated memory is still 71.3MB. Free memory was 40.4MB in the beginning and 36.0MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-08-29 03:23:32,354 INFO L158 Benchmark]: Boogie Preprocessor took 87.91ms. Allocated memory is still 71.3MB. Free memory was 36.0MB in the beginning and 46.1MB in the end (delta: -10.1MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. [2021-08-29 03:23:32,354 INFO L158 Benchmark]: RCFGBuilder took 504.88ms. Allocated memory is still 71.3MB. Free memory was 46.1MB in the beginning and 40.2MB in the end (delta: 5.9MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. [2021-08-29 03:23:32,354 INFO L158 Benchmark]: TraceAbstraction took 20033.70ms. Allocated memory was 71.3MB in the beginning and 134.2MB in the end (delta: 62.9MB). Free memory was 39.8MB in the beginning and 37.7MB in the end (delta: 2.1MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. [2021-08-29 03:23:32,354 INFO L158 Benchmark]: Witness Printer took 2.90ms. Allocated memory is still 134.2MB. Free memory is still 37.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 03:23:32,355 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 58.7MB. Free memory was 41.5MB in the beginning and 41.4MB in the end (delta: 43.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 512.08ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 35.8MB in the beginning and 40.6MB in the end (delta: -4.8MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 63.77ms. Allocated memory is still 71.3MB. Free memory was 40.4MB in the beginning and 36.0MB in the end (delta: 4.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 87.91ms. Allocated memory is still 71.3MB. Free memory was 36.0MB in the beginning and 46.1MB in the end (delta: -10.1MB). Peak memory consumption was 4.0MB. Max. memory is 16.1GB. * RCFGBuilder took 504.88ms. Allocated memory is still 71.3MB. Free memory was 46.1MB in the beginning and 40.2MB in the end (delta: 5.9MB). Peak memory consumption was 20.3MB. Max. memory is 16.1GB. * TraceAbstraction took 20033.70ms. Allocated memory was 71.3MB in the beginning and 134.2MB in the end (delta: 62.9MB). Free memory was 39.8MB in the beginning and 37.7MB in the end (delta: 2.1MB). Peak memory consumption was 65.0MB. Max. memory is 16.1GB. * Witness Printer took 2.90ms. Allocated memory is still 134.2MB. Free memory is still 37.7MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 1708]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseAnd at line 1122. Possible FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={5:0}] [L1067] SSL *s ; [L1068] int tmp ; [L1072] s = malloc(sizeof(SSL)) [L1073] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1074] s->ctx = malloc(sizeof(SSL_CTX)) [L1075] s->session = malloc(sizeof(SSL_SESSION)) [L1076] s->state = 8464 [L1083] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1084] unsigned long l ; [L1085] unsigned long Time ; [L1086] unsigned long tmp = __VERIFIER_nondet_long() ; [L1087] void (*cb)() ; [L1088] long num1 ; [L1089] int ret ; [L1090] int new_state ; [L1091] int state ; [L1092] int skip ; [L1093] int got_new_session ; [L1094] int tmp___1 = __VERIFIER_nondet_int() ; [L1095] int tmp___2 = __VERIFIER_nondet_int() ; [L1096] int tmp___3 ; [L1097] int tmp___4 ; [L1098] int tmp___5 ; [L1099] int tmp___6 ; [L1100] int tmp___7 ; [L1101] long tmp___8 = __VERIFIER_nondet_long() ; [L1102] int tmp___9 ; [L1103] int tmp___10 ; [L1104] int blastFlag ; [L1108] blastFlag = 0 [L1109] s->hit=__VERIFIER_nondet_int () [L1110] s->state = 8464 [L1111] Time = tmp [L1112] cb = (void (*)())((void *)0) [L1113] ret = -1 [L1114] skip = 0 [L1115] got_new_session = 0 [L1116] EXPR s->info_callback VAL [init=1, SSLv3_server_data={5:0}] [L1116] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1117] EXPR s->info_callback [L1117] cb = s->info_callback [L1121] EXPR s->in_handshake [L1121] s->in_handshake += 1 [L1122] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={5:0}] [L1131] EXPR s->cert VAL [init=1, SSLv3_server_data={5:0}] [L1131] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={5:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1164] COND TRUE s->state == 8464 [L1320] s->shutdown = 0 [L1321] ret = __VERIFIER_nondet_int() [L1322] COND TRUE blastFlag == 0 [L1323] blastFlag = 1 VAL [init=1, SSLv3_server_data={5:0}] [L1327] COND FALSE !(ret <= 0) [L1332] got_new_session = 1 [L1333] s->state = 8496 [L1334] s->init_num = 0 VAL [init=1, SSLv3_server_data={5:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={5:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={5:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={5:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1173] COND TRUE s->state == 8496 [L1338] ret = __VERIFIER_nondet_int() [L1339] COND TRUE blastFlag == 1 [L1340] blastFlag = 2 VAL [init=1, SSLv3_server_data={5:0}] [L1344] COND FALSE !(ret <= 0) [L1349] s->hit VAL [init=1, SSLv3_server_data={5:0}] [L1349] COND TRUE s->hit [L1350] s->state = 8656 VAL [init=1, SSLv3_server_data={5:0}] [L1354] s->init_num = 0 VAL [init=1, SSLv3_server_data={5:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={5:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={5:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={5:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1173] COND FALSE !(s->state == 8496) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1176] COND FALSE !(s->state == 8497) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1179] COND FALSE !(s->state == 8512) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1182] COND FALSE !(s->state == 8513) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1185] COND FALSE !(s->state == 8528) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1188] COND FALSE !(s->state == 8529) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1191] COND FALSE !(s->state == 8544) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1194] COND FALSE !(s->state == 8545) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1197] COND FALSE !(s->state == 8560) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1200] COND FALSE !(s->state == 8561) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1203] COND FALSE !(s->state == 8448) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1206] COND FALSE !(s->state == 8576) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1209] COND FALSE !(s->state == 8577) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1212] COND FALSE !(s->state == 8592) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1215] COND FALSE !(s->state == 8593) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1218] COND FALSE !(s->state == 8608) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1221] COND FALSE !(s->state == 8609) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1224] COND FALSE !(s->state == 8640) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1227] COND FALSE !(s->state == 8641) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1230] COND TRUE s->state == 8656 [L1554] EXPR s->session [L1554] EXPR s->s3 [L1554] EXPR (s->s3)->tmp.new_cipher [L1554] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1555] tmp___9 = __VERIFIER_nondet_int() [L1556] COND FALSE !(! tmp___9) [L1562] ret = __VERIFIER_nondet_int() [L1563] COND TRUE blastFlag == 2 [L1564] blastFlag = 5 VAL [init=1, SSLv3_server_data={5:0}] [L1568] COND FALSE !(ret <= 0) [L1573] s->state = 8672 [L1574] s->init_num = 0 [L1575] tmp___10 = __VERIFIER_nondet_int() [L1576] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={5:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={5:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={5:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={5:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1173] COND FALSE !(s->state == 8496) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1176] COND FALSE !(s->state == 8497) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1179] COND FALSE !(s->state == 8512) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1182] COND FALSE !(s->state == 8513) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1185] COND FALSE !(s->state == 8528) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1188] COND FALSE !(s->state == 8529) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1191] COND FALSE !(s->state == 8544) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1194] COND FALSE !(s->state == 8545) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1197] COND FALSE !(s->state == 8560) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1200] COND FALSE !(s->state == 8561) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1203] COND FALSE !(s->state == 8448) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1206] COND FALSE !(s->state == 8576) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1209] COND FALSE !(s->state == 8577) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1212] COND FALSE !(s->state == 8592) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1215] COND FALSE !(s->state == 8593) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1218] COND FALSE !(s->state == 8608) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1221] COND FALSE !(s->state == 8609) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1224] COND FALSE !(s->state == 8640) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1227] COND FALSE !(s->state == 8641) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1230] COND FALSE !(s->state == 8656) [L1233] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1233] COND FALSE !(s->state == 8657) [L1236] EXPR s->state VAL [init=1, SSLv3_server_data={5:0}] [L1236] COND TRUE s->state == 8672 [L1585] ret = __VERIFIER_nondet_int() [L1586] COND FALSE !(blastFlag == 4) VAL [init=1, SSLv3_server_data={5:0}] [L1589] COND TRUE blastFlag == 5 VAL [init=1, SSLv3_server_data={5:0}] [L1708] reach_error() VAL [init=1, SSLv3_server_data={5:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 145 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 19890.76ms, OverallIterations: 42, TraceHistogramMax: 4, EmptinessCheckTime: 46.47ms, AutomataDifference: 17259.15ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 12.30ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2270 SdHoareTripleChecker+Valid, 16262.76ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2270 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 13292.23ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 11389 mSDsCounter, 350 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 26314 IncrementalHoareTripleChecker+Invalid, 26664 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 350 mSolverCounterUnsat, 0 mSDtfsCounter, 26314 mSolverCounterSat, 56.15ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 228 GetRequests, 82 SyntacticMatches, 29 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 367.41ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=510occurred in iteration=40, InterpolantAutomatonStates: 162, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 214.82ms AutomataMinimizationTime, 41 MinimizatonAttempts, 933 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 157.02ms SsaConstructionTime, 516.17ms SatisfiabilityAnalysisTime, 1199.14ms InterpolantComputationTime, 3646 NumberOfCodeBlocks, 3646 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 3479 ConstructedInterpolants, 0 QuantifiedInterpolants, 9535 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 41 InterpolantComputations, 41 PerfectInterpolantSequences, 1839/1839 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 could not prove your program: unable to determine feasibility of some traces [2021-08-29 03:23:32,391 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-29 03:23:33,928 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2021-08-29 03:23:33,983 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-29 03:23:33,983 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-29 03:23:33,983 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-29 03:23:33,984 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-29 03:23:33,984 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-29 03:23:33,984 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-29 03:23:33,985 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-29 03:23:33,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-29 03:23:33,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-29 03:23:33,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-29 03:23:33,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-29 03:23:33,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-29 03:23:33,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-29 03:23:33,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-29 03:23:33,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-29 03:23:33,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-29 03:23:33,989 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2021-08-29 03:23:34,019 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-29 03:23:34,019 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-29 03:23:34,020 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-29 03:23:34,020 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-29 03:23:34,021 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-29 03:23:34,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-29 03:23:34,022 INFO L138 SettingsManager]: * Use SBE=true [2021-08-29 03:23:34,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-29 03:23:34,022 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-29 03:23:34,022 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-29 03:23:34,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-29 03:23:34,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-08-29 03:23:34,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-29 03:23:34,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-08-29 03:23:34,023 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-29 03:23:34,023 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-29 03:23:34,024 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-29 03:23:34,024 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-29 03:23:34,024 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-29 03:23:34,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-08-29 03:23:34,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-29 03:23:34,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-29 03:23:34,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-29 03:23:34,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:23:34,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-29 03:23:34,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-29 03:23:34,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-08-29 03:23:34,025 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-29 03:23:34,025 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-29 03:23:34,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-08-29 03:23:34,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-29 03:23:34,026 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-29 03:23:34,026 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 77ee66abd2a03836cba1056e8b8f081ca3f237e1 [2021-08-29 03:23:34,274 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-29 03:23:34,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-29 03:23:34,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-29 03:23:34,295 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-29 03:23:34,295 INFO L275 PluginConnector]: CDTParser initialized [2021-08-29 03:23:34,297 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2021-08-29 03:23:34,348 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e9400cee/7a66727686354557b9b5ee11b0bbd499/FLAG9b13b2c7c [2021-08-29 03:23:34,885 INFO L306 CDTParser]: Found 1 translation units. [2021-08-29 03:23:34,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2021-08-29 03:23:34,905 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e9400cee/7a66727686354557b9b5ee11b0bbd499/FLAG9b13b2c7c [2021-08-29 03:23:35,375 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0e9400cee/7a66727686354557b9b5ee11b0bbd499 [2021-08-29 03:23:35,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-29 03:23:35,378 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-29 03:23:35,386 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-29 03:23:35,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-29 03:23:35,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-29 03:23:35,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:23:35" (1/1) ... [2021-08-29 03:23:35,391 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4591bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:35, skipping insertion in model container [2021-08-29 03:23:35,391 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.08 03:23:35" (1/1) ... [2021-08-29 03:23:35,395 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-29 03:23:35,445 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-29 03:23:35,750 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c[71733,71746] [2021-08-29 03:23:35,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:23:35,783 INFO L203 MainTranslator]: Completed pre-run [2021-08-29 03:23:35,889 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c[71733,71746] [2021-08-29 03:23:35,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-29 03:23:35,910 INFO L208 MainTranslator]: Completed translation [2021-08-29 03:23:35,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:35 WrapperNode [2021-08-29 03:23:35,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-29 03:23:35,912 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-29 03:23:35,913 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-29 03:23:35,913 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-29 03:23:35,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:35" (1/1) ... [2021-08-29 03:23:35,946 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:35" (1/1) ... [2021-08-29 03:23:35,996 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-29 03:23:35,998 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-29 03:23:35,998 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-29 03:23:35,998 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-29 03:23:36,004 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:35" (1/1) ... [2021-08-29 03:23:36,004 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:35" (1/1) ... [2021-08-29 03:23:36,020 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:35" (1/1) ... [2021-08-29 03:23:36,023 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:35" (1/1) ... [2021-08-29 03:23:36,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:35" (1/1) ... [2021-08-29 03:23:36,055 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:35" (1/1) ... [2021-08-29 03:23:36,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:35" (1/1) ... [2021-08-29 03:23:36,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-29 03:23:36,078 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-29 03:23:36,078 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-29 03:23:36,078 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-29 03:23:36,079 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:35" (1/1) ... [2021-08-29 03:23:36,089 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-29 03:23:36,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-29 03:23:36,109 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-29 03:23:36,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-29 03:23:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-08-29 03:23:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-29 03:23:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-29 03:23:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-29 03:23:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-29 03:23:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-29 03:23:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-29 03:23:36,143 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-29 03:23:36,143 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-29 03:23:36,345 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-29 03:23:36,571 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2021-08-29 03:23:36,572 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2021-08-29 03:23:36,577 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-29 03:23:36,577 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-29 03:23:36,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:23:36 BoogieIcfgContainer [2021-08-29 03:23:36,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-29 03:23:36,579 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-29 03:23:36,579 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-29 03:23:36,581 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-29 03:23:36,581 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.08 03:23:35" (1/3) ... [2021-08-29 03:23:36,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687dffb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:23:36, skipping insertion in model container [2021-08-29 03:23:36,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.08 03:23:35" (2/3) ... [2021-08-29 03:23:36,582 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@687dffb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.08 03:23:36, skipping insertion in model container [2021-08-29 03:23:36,582 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:23:36" (3/3) ... [2021-08-29 03:23:36,583 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-2.c [2021-08-29 03:23:36,589 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-29 03:23:36,589 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-08-29 03:23:36,632 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-29 03:23:36,636 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-29 03:23:36,637 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-08-29 03:23:36,661 INFO L276 IsEmpty]: Start isEmpty. Operand has 145 states, 143 states have (on average 1.6993006993006994) internal successors, (243), 144 states have internal predecessors, (243), 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) [2021-08-29 03:23:36,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2021-08-29 03:23:36,666 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:36,667 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:36,667 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:36,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:36,676 INFO L82 PathProgramCache]: Analyzing trace with hash 522834703, now seen corresponding path program 1 times [2021-08-29 03:23:36,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 03:23:36,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830663796] [2021-08-29 03:23:36,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:36,688 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 03:23:36,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 03:23:36,690 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 03:23:36,691 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-29 03:23:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:36,853 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-29 03:23:36,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:23:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:37,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 03:23:37,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:37,186 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 03:23:37,186 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830663796] [2021-08-29 03:23:37,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830663796] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:37,187 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:37,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-29 03:23:37,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095648654] [2021-08-29 03:23:37,191 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:37,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 03:23:37,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:37,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:37,212 INFO L87 Difference]: Start difference. First operand has 145 states, 143 states have (on average 1.6993006993006994) internal successors, (243), 144 states have internal predecessors, (243), 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 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-08-29 03:23:39,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:39,686 INFO L93 Difference]: Finished difference Result 549 states and 925 transitions. [2021-08-29 03:23:39,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:39,688 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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 45 [2021-08-29 03:23:39,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:39,696 INFO L225 Difference]: With dead ends: 549 [2021-08-29 03:23:39,696 INFO L226 Difference]: Without dead ends: 373 [2021-08-29 03:23:39,699 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.88ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:39,701 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 561 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1982.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.71ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2384.75ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:39,702 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 0 Invalid, 697 Unknown, 0 Unchecked, 9.71ms Time], IncrementalHoareTripleChecker [13 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 2384.75ms Time] [2021-08-29 03:23:39,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2021-08-29 03:23:39,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2021-08-29 03:23:39,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 370 states have (on average 1.518918918918919) internal successors, (562), 370 states have internal predecessors, (562), 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) [2021-08-29 03:23:39,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 562 transitions. [2021-08-29 03:23:39,769 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 562 transitions. Word has length 45 [2021-08-29 03:23:39,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:39,770 INFO L470 AbstractCegarLoop]: Abstraction has 371 states and 562 transitions. [2021-08-29 03:23:39,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.0) internal successors, (88), 4 states have internal predecessors, (88), 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) [2021-08-29 03:23:39,771 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 562 transitions. [2021-08-29 03:23:39,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-08-29 03:23:39,779 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:39,779 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:39,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-29 03:23:39,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 03:23:39,989 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:39,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:39,991 INFO L82 PathProgramCache]: Analyzing trace with hash -60762572, now seen corresponding path program 1 times [2021-08-29 03:23:39,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 03:23:39,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [770720731] [2021-08-29 03:23:39,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:39,992 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 03:23:39,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 03:23:39,993 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 03:23:39,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-29 03:23:40,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:40,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-29 03:23:40,117 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:23:40,286 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:40,287 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 03:23:40,415 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-29 03:23:40,416 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 03:23:40,416 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [770720731] [2021-08-29 03:23:40,416 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [770720731] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:40,416 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:40,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-29 03:23:40,417 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318479384] [2021-08-29 03:23:40,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:40,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 03:23:40,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:40,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:40,420 INFO L87 Difference]: Start difference. First operand 371 states and 562 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-08-29 03:23:43,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:43,330 INFO L93 Difference]: Finished difference Result 853 states and 1299 transitions. [2021-08-29 03:23:43,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:43,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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 63 [2021-08-29 03:23:43,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:43,333 INFO L225 Difference]: With dead ends: 853 [2021-08-29 03:23:43,333 INFO L226 Difference]: Without dead ends: 611 [2021-08-29 03:23:43,334 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 4.42ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:43,335 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 288 mSDsluCounter, 361 mSDsCounter, 0 mSdLazyCounter, 755 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2480.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.95ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2853.51ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:43,336 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [288 Valid, 0 Invalid, 766 Unknown, 0 Unchecked, 4.95ms Time], IncrementalHoareTripleChecker [11 Valid, 755 Invalid, 0 Unknown, 0 Unchecked, 2853.51ms Time] [2021-08-29 03:23:43,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-08-29 03:23:43,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 609. [2021-08-29 03:23:43,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 609 states, 608 states have (on average 1.5164473684210527) internal successors, (922), 608 states have internal predecessors, (922), 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) [2021-08-29 03:23:43,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 922 transitions. [2021-08-29 03:23:43,374 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 922 transitions. Word has length 63 [2021-08-29 03:23:43,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:43,374 INFO L470 AbstractCegarLoop]: Abstraction has 609 states and 922 transitions. [2021-08-29 03:23:43,374 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 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) [2021-08-29 03:23:43,375 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 922 transitions. [2021-08-29 03:23:43,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-08-29 03:23:43,378 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:43,379 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:43,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-29 03:23:43,590 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 03:23:43,590 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:43,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:43,591 INFO L82 PathProgramCache]: Analyzing trace with hash -2005677060, now seen corresponding path program 1 times [2021-08-29 03:23:43,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 03:23:43,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1732817782] [2021-08-29 03:23:43,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:43,592 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 03:23:43,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 03:23:43,593 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 03:23:43,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-29 03:23:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-29 03:23:43,729 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-29 03:23:43,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-29 03:23:43,929 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:43,930 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-29 03:23:44,128 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-08-29 03:23:44,128 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-29 03:23:44,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1732817782] [2021-08-29 03:23:44,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1732817782] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-29 03:23:44,129 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-29 03:23:44,129 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-29 03:23:44,129 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920388629] [2021-08-29 03:23:44,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-08-29 03:23:44,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-29 03:23:44,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-08-29 03:23:44,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:44,130 INFO L87 Difference]: Start difference. First operand 609 states and 922 transitions. Second operand has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2021-08-29 03:23:46,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-29 03:23:46,420 INFO L93 Difference]: Finished difference Result 1091 states and 1654 transitions. [2021-08-29 03:23:46,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-08-29 03:23:46,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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 123 [2021-08-29 03:23:46,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-29 03:23:46,425 INFO L225 Difference]: With dead ends: 1091 [2021-08-29 03:23:46,425 INFO L226 Difference]: Without dead ends: 611 [2021-08-29 03:23:46,427 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 5.42ms TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-08-29 03:23:46,430 INFO L928 BasicCegarLoop]: 0 mSDtfsCounter, 296 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1992.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.59ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2244.69ms IncrementalHoareTripleChecker+Time [2021-08-29 03:23:46,431 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [296 Valid, 0 Invalid, 581 Unknown, 0 Unchecked, 2.59ms Time], IncrementalHoareTripleChecker [7 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 2244.69ms Time] [2021-08-29 03:23:46,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2021-08-29 03:23:46,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2021-08-29 03:23:46,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 611 states, 610 states have (on average 1.5049180327868852) internal successors, (918), 610 states have internal predecessors, (918), 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) [2021-08-29 03:23:46,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 918 transitions. [2021-08-29 03:23:46,467 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 918 transitions. Word has length 123 [2021-08-29 03:23:46,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-29 03:23:46,468 INFO L470 AbstractCegarLoop]: Abstraction has 611 states and 918 transitions. [2021-08-29 03:23:46,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 38.25) internal successors, (153), 4 states have internal predecessors, (153), 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) [2021-08-29 03:23:46,468 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 918 transitions. [2021-08-29 03:23:46,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-08-29 03:23:46,472 INFO L505 BasicCegarLoop]: Found error trace [2021-08-29 03:23:46,472 INFO L513 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-29 03:23:46,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-29 03:23:46,681 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 03:23:46,681 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-08-29 03:23:46,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-29 03:23:46,682 INFO L82 PathProgramCache]: Analyzing trace with hash -877709346, now seen corresponding path program 1 times [2021-08-29 03:23:46,683 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-29 03:23:46,684 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [804438346] [2021-08-29 03:23:46,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-29 03:23:46,684 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-29 03:23:46,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-29 03:23:46,685 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-29 03:23:46,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-29 03:23:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 03:23:46,948 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-29 03:23:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-29 03:23:47,379 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-08-29 03:23:47,379 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-08-29 03:23:47,380 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2021-08-29 03:23:47,392 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-29 03:23:47,589 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-29 03:23:47,593 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-29 03:23:47,669 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.08 03:23:47 BoogieIcfgContainer [2021-08-29 03:23:47,675 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-29 03:23:47,676 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-29 03:23:47,676 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-29 03:23:47,676 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-29 03:23:47,677 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.08 03:23:36" (3/4) ... [2021-08-29 03:23:47,678 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-08-29 03:23:47,749 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-08-29 03:23:47,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-29 03:23:47,750 INFO L158 Benchmark]: Toolchain (without parser) took 12372.24ms. Allocated memory was 60.8MB in the beginning and 100.7MB in the end (delta: 39.8MB). Free memory was 37.6MB in the beginning and 44.7MB in the end (delta: -7.1MB). Peak memory consumption was 32.6MB. Max. memory is 16.1GB. [2021-08-29 03:23:47,750 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 60.8MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-29 03:23:47,751 INFO L158 Benchmark]: CACSL2BoogieTranslator took 525.45ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 37.4MB in the beginning and 47.3MB in the end (delta: -9.9MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. [2021-08-29 03:23:47,751 INFO L158 Benchmark]: Boogie Procedure Inliner took 84.94ms. Allocated memory is still 81.8MB. Free memory was 47.3MB in the beginning and 61.2MB in the end (delta: -13.9MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2021-08-29 03:23:47,751 INFO L158 Benchmark]: Boogie Preprocessor took 79.63ms. Allocated memory is still 81.8MB. Free memory was 61.2MB in the beginning and 54.3MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2021-08-29 03:23:47,751 INFO L158 Benchmark]: RCFGBuilder took 500.29ms. Allocated memory is still 81.8MB. Free memory was 54.3MB in the beginning and 53.7MB in the end (delta: 609.1kB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2021-08-29 03:23:47,752 INFO L158 Benchmark]: TraceAbstraction took 11095.84ms. Allocated memory was 81.8MB in the beginning and 100.7MB in the end (delta: 18.9MB). Free memory was 53.3MB in the beginning and 59.4MB in the end (delta: -6.1MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. [2021-08-29 03:23:47,752 INFO L158 Benchmark]: Witness Printer took 74.17ms. Allocated memory is still 100.7MB. Free memory was 59.4MB in the beginning and 44.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-29 03:23:47,753 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 60.8MB. Free memory was 43.6MB in the beginning and 43.5MB in the end (delta: 73.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 525.45ms. Allocated memory was 60.8MB in the beginning and 81.8MB in the end (delta: 21.0MB). Free memory was 37.4MB in the beginning and 47.3MB in the end (delta: -9.9MB). Peak memory consumption was 15.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 84.94ms. Allocated memory is still 81.8MB. Free memory was 47.3MB in the beginning and 61.2MB in the end (delta: -13.9MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 79.63ms. Allocated memory is still 81.8MB. Free memory was 61.2MB in the beginning and 54.3MB in the end (delta: 6.9MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * RCFGBuilder took 500.29ms. Allocated memory is still 81.8MB. Free memory was 54.3MB in the beginning and 53.7MB in the end (delta: 609.1kB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. * TraceAbstraction took 11095.84ms. Allocated memory was 81.8MB in the beginning and 100.7MB in the end (delta: 18.9MB). Free memory was 53.3MB in the beginning and 59.4MB in the end (delta: -6.1MB). Peak memory consumption was 42.7MB. Max. memory is 16.1GB. * Witness Printer took 74.17ms. Allocated memory is still 100.7MB. Free memory was 59.4MB in the beginning and 44.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1708]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={15:0}] [L1067] SSL *s ; [L1068] int tmp ; [L1072] s = malloc(sizeof(SSL)) [L1073] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1074] s->ctx = malloc(sizeof(SSL_CTX)) [L1075] s->session = malloc(sizeof(SSL_SESSION)) [L1076] s->state = 8464 [L1083] BUF_MEM *buf = (BUF_MEM *)__VERIFIER_nondet_ulong(); [L1084] unsigned long l ; [L1085] unsigned long Time ; [L1086] unsigned long tmp = __VERIFIER_nondet_long() ; [L1087] void (*cb)() ; [L1088] long num1 ; [L1089] int ret ; [L1090] int new_state ; [L1091] int state ; [L1092] int skip ; [L1093] int got_new_session ; [L1094] int tmp___1 = __VERIFIER_nondet_int() ; [L1095] int tmp___2 = __VERIFIER_nondet_int() ; [L1096] int tmp___3 ; [L1097] int tmp___4 ; [L1098] int tmp___5 ; [L1099] int tmp___6 ; [L1100] int tmp___7 ; [L1101] long tmp___8 = __VERIFIER_nondet_long() ; [L1102] int tmp___9 ; [L1103] int tmp___10 ; [L1104] int blastFlag ; [L1108] blastFlag = 0 [L1109] s->hit=__VERIFIER_nondet_int () [L1110] s->state = 8464 [L1111] Time = tmp [L1112] cb = (void (*)())((void *)0) [L1113] ret = -1 [L1114] skip = 0 [L1115] got_new_session = 0 [L1116] EXPR s->info_callback VAL [init=1, SSLv3_server_data={15:0}] [L1116] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1117] EXPR s->info_callback [L1117] cb = s->info_callback [L1121] EXPR s->in_handshake [L1121] s->in_handshake += 1 [L1122] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={15:0}] [L1131] EXPR s->cert VAL [init=1, SSLv3_server_data={15:0}] [L1131] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={15:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1164] COND TRUE s->state == 8464 [L1320] s->shutdown = 0 [L1321] ret = __VERIFIER_nondet_int() [L1322] COND TRUE blastFlag == 0 [L1323] blastFlag = 1 VAL [init=1, SSLv3_server_data={15:0}] [L1327] COND FALSE !(ret <= 0) [L1332] got_new_session = 1 [L1333] s->state = 8496 [L1334] s->init_num = 0 VAL [init=1, SSLv3_server_data={15:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={15:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={15:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={15:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1173] COND TRUE s->state == 8496 [L1338] ret = __VERIFIER_nondet_int() [L1339] COND TRUE blastFlag == 1 [L1340] blastFlag = 2 VAL [init=1, SSLv3_server_data={15:0}] [L1344] COND FALSE !(ret <= 0) [L1349] s->hit VAL [init=1, SSLv3_server_data={15:0}] [L1349] COND TRUE s->hit [L1350] s->state = 8656 VAL [init=1, SSLv3_server_data={15:0}] [L1354] s->init_num = 0 VAL [init=1, SSLv3_server_data={15:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={15:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={15:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={15:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1173] COND FALSE !(s->state == 8496) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1176] COND FALSE !(s->state == 8497) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1179] COND FALSE !(s->state == 8512) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1182] COND FALSE !(s->state == 8513) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1185] COND FALSE !(s->state == 8528) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1188] COND FALSE !(s->state == 8529) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1191] COND FALSE !(s->state == 8544) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1194] COND FALSE !(s->state == 8545) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1197] COND FALSE !(s->state == 8560) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1200] COND FALSE !(s->state == 8561) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1203] COND FALSE !(s->state == 8448) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1206] COND FALSE !(s->state == 8576) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1209] COND FALSE !(s->state == 8577) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1212] COND FALSE !(s->state == 8592) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1215] COND FALSE !(s->state == 8593) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1218] COND FALSE !(s->state == 8608) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1221] COND FALSE !(s->state == 8609) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1224] COND FALSE !(s->state == 8640) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1227] COND FALSE !(s->state == 8641) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1230] COND TRUE s->state == 8656 [L1554] EXPR s->session [L1554] EXPR s->s3 [L1554] EXPR (s->s3)->tmp.new_cipher [L1554] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1555] tmp___9 = __VERIFIER_nondet_int() [L1556] COND FALSE !(! tmp___9) [L1562] ret = __VERIFIER_nondet_int() [L1563] COND TRUE blastFlag == 2 [L1564] blastFlag = 5 VAL [init=1, SSLv3_server_data={15:0}] [L1568] COND FALSE !(ret <= 0) [L1573] s->state = 8672 [L1574] s->init_num = 0 [L1575] tmp___10 = __VERIFIER_nondet_int() [L1576] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={15:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={15:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={15:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={15:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1173] COND FALSE !(s->state == 8496) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1176] COND FALSE !(s->state == 8497) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1179] COND FALSE !(s->state == 8512) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1182] COND FALSE !(s->state == 8513) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1185] COND FALSE !(s->state == 8528) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1188] COND FALSE !(s->state == 8529) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1191] COND FALSE !(s->state == 8544) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1194] COND FALSE !(s->state == 8545) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1197] COND FALSE !(s->state == 8560) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1200] COND FALSE !(s->state == 8561) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1203] COND FALSE !(s->state == 8448) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1206] COND FALSE !(s->state == 8576) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1209] COND FALSE !(s->state == 8577) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1212] COND FALSE !(s->state == 8592) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1215] COND FALSE !(s->state == 8593) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1218] COND FALSE !(s->state == 8608) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1221] COND FALSE !(s->state == 8609) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1224] COND FALSE !(s->state == 8640) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1227] COND FALSE !(s->state == 8641) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1230] COND FALSE !(s->state == 8656) [L1233] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1233] COND FALSE !(s->state == 8657) [L1236] EXPR s->state VAL [init=1, SSLv3_server_data={15:0}] [L1236] COND TRUE s->state == 8672 [L1585] ret = __VERIFIER_nondet_int() [L1586] COND FALSE !(blastFlag == 4) VAL [init=1, SSLv3_server_data={15:0}] [L1589] COND TRUE blastFlag == 5 VAL [init=1, SSLv3_server_data={15:0}] [L1708] reach_error() VAL [init=1, SSLv3_server_data={15:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 145 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 10961.27ms, OverallIterations: 4, TraceHistogramMax: 4, EmptinessCheckTime: 34.69ms, AutomataDifference: 7731.35ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 10.47ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1145 SdHoareTripleChecker+Valid, 7482.95ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1145 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 6455.70ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 976 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2013 IncrementalHoareTripleChecker+Invalid, 2044 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 0 mSDtfsCounter, 2013 mSolverCounterSat, 17.25ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 456 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.71ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred in iteration=3, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 129.03ms AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 143.32ms SsaConstructionTime, 373.10ms SatisfiabilityAnalysisTime, 1051.05ms InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 456 ConstructedInterpolants, 0 QuantifiedInterpolants, 1071 SizeOfPredicates, 0 NumberOfNonLiveVariables, 644 ConjunctsInSsa, 6 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 224/224 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! [2021-08-29 03:23:47,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...